WO1991014332A1 - Radio telephone with secondary charging capability - Google Patents

Radio telephone with secondary charging capability Download PDF

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Publication number
WO1991014332A1
WO1991014332A1 PCT/US1991/000752 US9100752W WO9114332A1 WO 1991014332 A1 WO1991014332 A1 WO 1991014332A1 US 9100752 W US9100752 W US 9100752W WO 9114332 A1 WO9114332 A1 WO 9114332A1
Authority
WO
WIPO (PCT)
Prior art keywords
selective call
radio telephone
call receiver
receiver
energy source
Prior art date
Application number
PCT/US1991/000752
Other languages
French (fr)
Inventor
Michael W. Powell
Sergio Fernandez
John M. Mckee
Original Assignee
Motorola, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Motorola, Inc. filed Critical Motorola, Inc.
Publication of WO1991014332A1 publication Critical patent/WO1991014332A1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
    • H04M1/72409—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/0254—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets comprising one or a plurality of mechanically detachable modules
    • H04M1/0256—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets comprising one or a plurality of mechanically detachable modules wherein the modules are operable in the detached state, e.g. one module for the user interface and one module for the transceiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0296—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level switching to a backup power supply
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • This invention relates in general to radio telephones and more particularly to a portable radio telephone having a detachable selective call receiver.
  • Communication systems typically use a transmitter that broadcasts a signal for reception by a receiver.
  • the signal that is broadcast by the transmitter is used to convey information to a receiver that is selected by decoding an address corresponding with the targeted receiver.
  • the radio telephone user addresses other radio telephone units or land-line telephones by entering a telephone number that corresponds to the phone system address of the user to be contacted. Once the connection is complete, two way voice or data communications can take place. In the case where data reception is desired, the information must be received via a modem then presented to the user. This is typically not practical when using a portable cellular radio telephone because the modem and data terminal required results in a physical inconvenience (more equipment to carry) and added expense to the user. In existing cellular radio telephone systems, the high cost of initiating or receiving a call at the cellular unit has prevented many potential users from subscribing to cellular services.
  • cellular carriers are hesitant to support changes in their system's operation, signalling protocol, or frequency allocations to support a lower revenue service (paging) in their network. This position relegates the consumer to a decision of paying for an unnecessarily expensive system (cellular radio telephone) or compromising their communication requirements by giving up two way communication capability with the choice of paging.
  • the subscription cost to a paging service is significantly lower that of a cellular radio telephone service.
  • Paging systems typically use a receiver that has at least one unique selective call address. This receiver is commonly referred to as a selective call receiver or pager. When a pager receives and decodes its address, the pager typically alerts the user to the presence of incoming information and operates to present this information. Paging systems are an excellent vehicle for delivering voice, numeric, alphanumeric or coded information to a subscriber.
  • Paging systems are designed to maximize the efficiency of air time by the selection of a coding scheme that allows "battery saving.”
  • Battery saving is typically characterized by the periodic on/off strobing of the decoding and receiving sections of a selective call receiver. This allows the battery life to be extended by reducing the average power consumption of the selective call receiver.
  • Power or battery saving features are of special interest to paging receiver manufacturers. Market pressures keep driving the size of pagers down while energy storage technology (battery) manufacturers have been relatively slow to decrease the size of primary and secondary storage cells used to power pagers.
  • a radio telephone powered by a first energy source and a selective call receiver powered by a second energy source the combination comprising charging means for charging the second energy source with power provided by the first energy source and communication means for transferring information between the radio telephone and the selective call receiver.
  • FIG. 1 is a system diagram of the radio telephone/selective call receiver system in accordance with the preferred embodiment.
  • FIG. 2A is a block diagram of a prior art radio telephone.
  • FIG. 2B is a block diagram of a prior art selective call receiver.
  • FIG. 3A is a block diagram of the radio telephone.
  • FIG. 3B is a block diagram of the selective call receiver.
  • FIG. 4 is an front isometric view of the radio telephone/selective call receiver unit.
  • FIG. 5A is an front isometric view of the articulated portion of the radio telephone/selective call receiver unit showing the selective call receiver attached.
  • FIG. 5B is an front isometric view of the articulated portion of the radio telephone/selective call receiver unit showing the selective call receiver detached.
  • the preferred embodiment of the radio telephone/selective call receiver system comprises a telephone 101 connected by the standard telephone network to a system controller 102 which oversees the operation of the radio frequency transmitter/receiver 103 and encodes and decodes the inbound and outbound addresses into formats that are compatible the the respective land line and . cellular radio telephone addressing requirements.
  • the system controller 102 can also function to encode paging messages for transmission by the radio frequency transmitter/receiver 103.
  • Telephony signals are transmitted to and received from a radio telephone 105 by at least one antenna 104 coupled to the radio frequency transmitter/receiver 103.
  • the radio frequency transmitter/receiver 103 may also be used to transmit paging messages to the selective call receiver 106. Referring to FIG.
  • FIG. 2A a block diagram is shown of the battery 201 powered radio telephone.
  • a radio frequency signal is received or transmitted by the antenna 202.
  • the antenna is coupled to the receiver 203 and transmitter 204 by a diplexer 205.
  • the received signal is routed from the receiver 203 to the control circuitry 206 that recovers any information contained within the received signal. This recovered information is then used to activate the alert 207 (a ringer in the case of a cellular radio telephone) and after answering the call, sustain the connection.
  • the alert 207 a ringer in the case of a cellular radio telephone
  • the user aurally communicates with the other party via the speaker 208 and a microphone 209.
  • Recovered audio from the control circuitry 206 is routed to the speaker which converts electrical energy into acoustical energy thus enabling the user to hear any communications.
  • the microphone 209 is used to convert acoustic energy into electrical energy for use by the control circuitry 206 in modulating the radio frequency carrier produced by the transmitter 204.
  • the user may initiate a call by selecting the proper control 210 and dialing the number of the party to be contacted. When dialed, the number is presented on a display 211 to provide visual feedback for the user.
  • the selective call receiver operates to receive a signal via an antenna 213.
  • the received signal is routed from the antenna 213 to the receiver 214.
  • the receiver 214 demodulates the received signals using conventional techniques and forwards the demodulated signal to the control circuitry 215, which decodes and recovers information contained within the received signal.
  • the selective call receiver presents at least a portion of the information, such as by a display 217, and signals the user via a sensible alert 218 that a message has been received.
  • FIG. 3A a block diagram is shown of the battery 301 powered radio telephone.
  • a radio frequency signal is received or transmitted by the antenna 302.
  • the antenna is coupled to the receiver 303 and transmitter 304 by a diplexer 305.
  • the received signal is routed from the receiver 303 to the control circuitry 306 that recovers any information contained within the received signal. This recovered information is then used to activate the alert 307 (a ringer in the case of a cellular radio telephone) and after answering the call, sustain the connection.
  • the alert 307 a ringer in the case of a cellular radio telephone
  • the user aurally communicates with the other party via the speaker 308 and a microphone 309. Recovered audio from the control circuitry 306 is routed to the speaker which converts electrical energy into acoustical energy thus enabling the user to hear any communications.
  • the microphone 309 is used to convert acoustic energy into electrical energy for use by the control circuitry 306 in modulating the radio frequency carrier produced by the transmitter 304.
  • the user may initiate a call by selecting the proper control 310 and dialing the number of the party to be contacted. When dialed, the number is presented on a display 311 to provide visual feedback for the user.
  • the battery 301 is connected to a regulator 312 that controls the power delivered to the selective call receiver's power source when the radio telephone is coupled with the selective call receiver. Information may be exchanged between the selective call receiver and radio telephone via a communication means.
  • the communication means allows information exchange via an interface 313 that consists of conventional signal generating, encoding, and decoding means (eg.
  • a serial data encoder/decoder e.g. a serial data encoder/decoder
  • a coupling means eg. a physical contact, optical or acoustic transceiver, etc.
  • the selective call receiver operates to receive a signal via an antenna 313.
  • the received signal is routed from the antenna 313 to the receiver 314.
  • the receiver 314 demodulates the received signals using conventional techniques and forwards the demodulated signal to the control circuitry 315, which decodes and recovers information contained within the received signal.
  • the selective call receiver presents at least a portion of the information, such as by a display 317, and signals the user via a sensible alert 318 that a message has been received.
  • the selective call receiver is able to exchange information (communicate) with the radio telephone by using an interface 315 capable of coupling to the interface 313 in the radio telephone.
  • the front isometric view of the radio telephone/selective call receiver shows the antenna, radio telephone portion 402, loudspeaker 403, display 404, control pad 405 including a dialing keypad and associated operational controls, a microphone 406, and a removably detachable selective call receiver 407.
  • Electrical contacts located on the back of the radio telephone portion 402 of the unit are provided for charging the individual power sources contained within the radio telephone and the selective call receiver. Charging is accomplished by folding the lower articulated portion including the selective call receiver upward against the control pad 405 then inserting the folded unit into a charging apparatus (not shown) .
  • a portable power adapter can be coupled into a power jack located on the radio telephone portion 402 of the unit for charging or supplying external power.
  • the front isometric view of the articulated portion of the radio telephone/selective call receiver unit shows the attachment means 501 on which the articulated portion pivots when the complete unit is assembled.
  • the top section 502 of the articulated portion of the radio telephone/selective call receiver unit contains the microphone 503 that is used by the radio telephone.
  • the bottom section 504 comprises a selective call receiver with integral display means 505, function controls 506, and an alert transducer (not shown) .
  • the front isometric view of the articulated portion of the radio telephone/selective call receiver unit shows the selective call receiver 507 detached from the top section 502 of the articulated portion of the radio telephone/selective call receiver unit 508.
  • Mechanical contacts 509 that reside within the retaining slot for the selective call receiver, provide a means for electrically connecting to and coupling electrical power from the radio telephone to contacts (not shown) located on the top of the selective call receiver. This power is used to replenish charge in the selective call receiver's power source.
  • a flap 510 is provided to protect the electrical contacts 509 as well as the rails that form the retaining, slot. This flap 510 folds flat and locks against the retaining area.
  • the means for transferring information 511 is implemented using an optical transmission link to avoid problems associated with mechanical contacts such as corrosion.
  • optical coupling in the shielded environment provided within the retaining slot between the radio telephone and selective call receiver units allows this system a much wider immunity to electromagnetic, acoustic, or mechanical vibration/shock interferences. The end result is a more reliable system.
  • the information that is transferred from the selective call receiver to the radio telephone can contain a phone number that was received in a message by the selective call receiver.
  • This phone number can be used to automatically or by invoking a user controlled function, respond to the individual that sent the original message.
  • the radio telephone In response to the message containing the phone number, the radio telephone generates a signalling sequence recognized by its system as a call initiation.
  • This call means gives the user of the radio telephone/selective call receiver unit the ability to respond to messages containing phone numbers without manually entering the phone number received by the selective call receiver.
  • Another advantage of this implementation of a call means in conjunction with the means for transferring information (or communication means) is that when the selective call receiver is disconnected from the radio telephone and a message is received containing a telephone number, the user can respond to that or any other received messages having either phone numbers or referencing predetermined numbers contained within the memory of the radio telephone when they re-connect the selective call receiver to the radio telephone.
  • the selective call receiver 507 and radio telephone are fully functional as their own independent entities.
  • This feature offers the user additional utility in that they may on occasion choose to carry only the radio telephone or selective call receiver 507.
  • An example of this would be an executive that carries the complete unit in their briefcase would want to be in touch with his office. The executive could detach.the selective call receiver 507 from the radio telephone, store the radio telephone in their locked briefcase, and carry the selective call receiver 507. Because the selective call receiver 507 is much less bulkier than the entire unit and offers a silent alerting (vibratory alert) message storage capability (this feature eliminates audible interruptions and allows the user to defer answering the message) , the user is offered an increased level of convenience.
  • the energy source in the selective call receiver 507 is charged using power that is provided by energy source in the radio telephone.
  • the radio telephone's energy source is coupled to a power regulator that limits the current and voltage to provide approximately a C/10 (read "C over ten", this denotes the capacity in amp « hours of a secondary energy source divided by 10.0) charging rate to the energy source in the selective call receiver 507. This effectively extends the useful life of the selective call receiver's 507 energy source until the time that the power regulator's input power drops below the level required to supply the required charging current and voltage at its output.

Abstract

A radio frequency system where in combination, a radio telephone (105, 402) is powered by a first energy source (301) and a selective call receiver (106, 407) is powered by a second energy source (314). The devices in combination function interdependently as a coupled unit or independently as separate units. The combination comprises a regulator (312) for charging the second energy source (314) with power that is provided by the first energy source (301) and communication interface (313, 315) for transferring information between the radio telephone and the selective call receiver.

Description

RADIO TELEPHONE WITH SECONDARY CHARGING CAPABILITY
Field of the Invention
This invention relates in general to radio telephones and more particularly to a portable radio telephone having a detachable selective call receiver.
Background of the Invention
Communication systems typically use a transmitter that broadcasts a signal for reception by a receiver. The signal that is broadcast by the transmitter is used to convey information to a receiver that is selected by decoding an address corresponding with the targeted receiver. In a radio telephone system, the radio telephone user addresses other radio telephone units or land-line telephones by entering a telephone number that corresponds to the phone system address of the user to be contacted. Once the connection is complete, two way voice or data communications can take place. In the case where data reception is desired, the information must be received via a modem then presented to the user. This is typically not practical when using a portable cellular radio telephone because the modem and data terminal required results in a physical inconvenience (more equipment to carry) and added expense to the user. In existing cellular radio telephone systems, the high cost of initiating or receiving a call at the cellular unit has prevented many potential users from subscribing to cellular services.
The existing infrastructure used by cellular service operators cannot directly accommodate standard selective call paging. Presently, cellular carriers are hesitant to support changes in their system's operation, signalling protocol, or frequency allocations to support a lower revenue service (paging) in their network. This position relegates the consumer to a decision of paying for an unnecessarily expensive system (cellular radio telephone) or compromising their communication requirements by giving up two way communication capability with the choice of paging. The subscription cost to a paging service is significantly lower that of a cellular radio telephone service.
Paging systems typically use a receiver that has at least one unique selective call address. This receiver is commonly referred to as a selective call receiver or pager. When a pager receives and decodes its address, the pager typically alerts the user to the presence of incoming information and operates to present this information. Paging systems are an excellent vehicle for delivering voice, numeric, alphanumeric or coded information to a subscriber.
Paging systems are designed to maximize the efficiency of air time by the selection of a coding scheme that allows "battery saving." Battery saving is typically characterized by the periodic on/off strobing of the decoding and receiving sections of a selective call receiver. This allows the battery life to be extended by reducing the average power consumption of the selective call receiver. Power or battery saving features are of special interest to paging receiver manufacturers. Market pressures keep driving the size of pagers down while energy storage technology (battery) manufacturers have been relatively slow to decrease the size of primary and secondary storage cells used to power pagers.
Summary of the Invention
In carrying out the above, there is provided in combination, a radio telephone powered by a first energy source and a selective call receiver powered by a second energy source, the combination comprising charging means for charging the second energy source with power provided by the first energy source and communication means for transferring information between the radio telephone and the selective call receiver. Brief Description of the Drawings
FIG. 1 is a system diagram of the radio telephone/selective call receiver system in accordance with the preferred embodiment.
FIG. 2A is a block diagram of a prior art radio telephone.
FIG. 2B is a block diagram of a prior art selective call receiver. FIG. 3A is a block diagram of the radio telephone. FIG. 3B is a block diagram of the selective call receiver.
FIG. 4 is an front isometric view of the radio telephone/selective call receiver unit. FIG. 5A is an front isometric view of the articulated portion of the radio telephone/selective call receiver unit showing the selective call receiver attached.
FIG. 5B is an front isometric view of the articulated portion of the radio telephone/selective call receiver unit showing the selective call receiver detached.
Description of a Preferred Embodiment
Referring to FIG. 1, the preferred embodiment of the radio telephone/selective call receiver system comprises a telephone 101 connected by the standard telephone network to a system controller 102 which oversees the operation of the radio frequency transmitter/receiver 103 and encodes and decodes the inbound and outbound addresses into formats that are compatible the the respective land line and. cellular radio telephone addressing requirements. The system controller 102 can also function to encode paging messages for transmission by the radio frequency transmitter/receiver 103. Telephony signals are transmitted to and received from a radio telephone 105 by at least one antenna 104 coupled to the radio frequency transmitter/receiver 103. The radio frequency transmitter/receiver 103 may also be used to transmit paging messages to the selective call receiver 106. Referring to FIG. 2A, a block diagram is shown of the battery 201 powered radio telephone. A radio frequency signal is received or transmitted by the antenna 202. The antenna is coupled to the receiver 203 and transmitter 204 by a diplexer 205. The received signal is routed from the receiver 203 to the control circuitry 206 that recovers any information contained within the received signal. This recovered information is then used to activate the alert 207 (a ringer in the case of a cellular radio telephone) and after answering the call, sustain the connection. When a connection is completed, the user aurally communicates with the other party via the speaker 208 and a microphone 209. Recovered audio from the control circuitry 206 is routed to the speaker which converts electrical energy into acoustical energy thus enabling the user to hear any communications. The microphone 209 is used to convert acoustic energy into electrical energy for use by the control circuitry 206 in modulating the radio frequency carrier produced by the transmitter 204. The user may initiate a call by selecting the proper control 210 and dialing the number of the party to be contacted. When dialed, the number is presented on a display 211 to provide visual feedback for the user.
Referring to FIG. 2B, a block diagram is shown of the battery 212 powered selective call receiver. The selective call receiver operates to receive a signal via an antenna 213. The received signal is routed from the antenna 213 to the receiver 214. The receiver 214 demodulates the received signals using conventional techniques and forwards the demodulated signal to the control circuitry 215, which decodes and recovers information contained within the received signal. In accordance with the recovered information and user controls 216, the selective call receiver presents at least a portion of the information, such as by a display 217, and signals the user via a sensible alert 218 that a message has been received.
Referring to FIG. 3A, a block diagram is shown of the battery 301 powered radio telephone. A radio frequency signal is received or transmitted by the antenna 302. The antenna is coupled to the receiver 303 and transmitter 304 by a diplexer 305. The received signal is routed from the receiver 303 to the control circuitry 306 that recovers any information contained within the received signal. This recovered information is then used to activate the alert 307 (a ringer in the case of a cellular radio telephone) and after answering the call, sustain the connection. When a connection is completed, the user aurally communicates with the other party via the speaker 308 and a microphone 309. Recovered audio from the control circuitry 306 is routed to the speaker which converts electrical energy into acoustical energy thus enabling the user to hear any communications. The microphone 309 is used to convert acoustic energy into electrical energy for use by the control circuitry 306 in modulating the radio frequency carrier produced by the transmitter 304. The user may initiate a call by selecting the proper control 310 and dialing the number of the party to be contacted. When dialed, the number is presented on a display 311 to provide visual feedback for the user. The battery 301 is connected to a regulator 312 that controls the power delivered to the selective call receiver's power source when the radio telephone is coupled with the selective call receiver. Information may be exchanged between the selective call receiver and radio telephone via a communication means. The communication means allows information exchange via an interface 313 that consists of conventional signal generating, encoding, and decoding means (eg. a serial data encoder/decoder), and a coupling means (eg. a physical contact, optical or acoustic transceiver, etc.). Is is clear to one skilled in the art that the coupling means can be constructed in a variety of different ways using any media capable of carrying information transmissions.
Referring to FIG. 3B, a block diagram is shown of the battery 312 powered selective call receiver. The selective call receiver operates to receive a signal via an antenna 313. The received signal is routed from the antenna 313 to the receiver 314. The receiver 314 demodulates the received signals using conventional techniques and forwards the demodulated signal to the control circuitry 315, which decodes and recovers information contained within the received signal. In accordance with the recovered information and user controls 316, the selective call receiver presents at least a portion of the information, such as by a display 317, and signals the user via a sensible alert 318 that a message has been received. The selective call receiver is able to exchange information (communicate) with the radio telephone by using an interface 315 capable of coupling to the interface 313 in the radio telephone.
Referring to FIG. 4, the front isometric view of the radio telephone/selective call receiver shows the antenna, radio telephone portion 402, loudspeaker 403, display 404, control pad 405 including a dialing keypad and associated operational controls, a microphone 406, and a removably detachable selective call receiver 407. Electrical contacts (not shown) located on the back of the radio telephone portion 402 of the unit are provided for charging the individual power sources contained within the radio telephone and the selective call receiver. Charging is accomplished by folding the lower articulated portion including the selective call receiver upward against the control pad 405 then inserting the folded unit into a charging apparatus (not shown) . Alternatively, a portable power adapter can be coupled into a power jack located on the radio telephone portion 402 of the unit for charging or supplying external power.
Referring to FIG. 5A, the front isometric view of the articulated portion of the radio telephone/selective call receiver unit shows the attachment means 501 on which the articulated portion pivots when the complete unit is assembled. The top section 502 of the articulated portion of the radio telephone/selective call receiver unit contains the microphone 503 that is used by the radio telephone. The bottom section 504 comprises a selective call receiver with integral display means 505, function controls 506, and an alert transducer (not shown) .
Referring to FIG. 5B, the front isometric view of the articulated portion of the radio telephone/selective call receiver unit shows the selective call receiver 507 detached from the top section 502 of the articulated portion of the radio telephone/selective call receiver unit 508. Mechanical contacts 509 that reside within the retaining slot for the selective call receiver, provide a means for electrically connecting to and coupling electrical power from the radio telephone to contacts (not shown) located on the top of the selective call receiver. This power is used to replenish charge in the selective call receiver's power source. When the selective call receiver is detached from the radio telephone, a flap 510 is provided to protect the electrical contacts 509 as well as the rails that form the retaining, slot. This flap 510 folds flat and locks against the retaining area. The means for transferring information 511 is implemented using an optical transmission link to avoid problems associated with mechanical contacts such as corrosion. The use of optical coupling in the shielded environment provided within the retaining slot between the radio telephone and selective call receiver units allows this system a much wider immunity to electromagnetic, acoustic, or mechanical vibration/shock interferences. The end result is a more reliable system.
The information that is transferred from the selective call receiver to the radio telephone can contain a phone number that was received in a message by the selective call receiver. This phone number can be used to automatically or by invoking a user controlled function, respond to the individual that sent the original message. In response to the message containing the phone number, the radio telephone generates a signalling sequence recognized by its system as a call initiation. This call means gives the user of the radio telephone/selective call receiver unit the ability to respond to messages containing phone numbers without manually entering the phone number received by the selective call receiver. Another advantage of this implementation of a call means in conjunction with the means for transferring information (or communication means) is that when the selective call receiver is disconnected from the radio telephone and a message is received containing a telephone number, the user can respond to that or any other received messages having either phone numbers or referencing predetermined numbers contained within the memory of the radio telephone when they re-connect the selective call receiver to the radio telephone.
When disconnected, the selective call receiver 507 and radio telephone are fully functional as their own independent entities. This feature offers the user additional utility in that they may on occasion choose to carry only the radio telephone or selective call receiver 507. An example of this would be an executive that carries the complete unit in their briefcase would want to be in touch with his office. The executive could detach.the selective call receiver 507 from the radio telephone, store the radio telephone in their locked briefcase, and carry the selective call receiver 507. Because the selective call receiver 507 is much less bulkier than the entire unit and offers a silent alerting (vibratory alert) message storage capability (this feature eliminates audible interruptions and allows the user to defer answering the message) , the user is offered an increased level of convenience.
When the radio telephone and selective call receiver 507 units are connected, the energy source in the selective call receiver 507 is charged using power that is provided by energy source in the radio telephone. The radio telephone's energy source is coupled to a power regulator that limits the current and voltage to provide approximately a C/10 (read "C over ten", this denotes the capacity in amp«hours of a secondary energy source divided by 10.0) charging rate to the energy source in the selective call receiver 507. This effectively extends the useful life of the selective call receiver's 507 energy source until the time that the power regulator's input power drops below the level required to supply the required charging current and voltage at its output.

Claims

1. In combination, a radio telephone powered by a first energy source and a selective call receiver powered by a second energy source, comprising: charging means for charging said second energy source with power provided by said first energy source; and communication means for transferring information between said radio telephone and said selective call receiver.
2. The combination according to claim 1 wherein said charging means and*said communication means are selectably decoupled and said radio telephone and said selective call receiver function independently.
3. The combination according to claim 1 wherein said communication means further comprises call means for initiating a call on the radio telephone in response to said information transferred from said selective call receiver.
4. The combination according to claim 3 wherein the information includes a phone number transferred between said selective call receiver and said radio telephone.
5. An apparatus including a radio telephone and a selective call receiver, said radio telephone capable of being powered by a first energy source and said selective call receiver capable of being powered by a second energy source, said apparatus comprising: means for transferring information between said selective call receiver and said radio telephone; and means for charging said second energy source with power provided by said first energy source.
6. The apparatus according to claim 5 wherein said means for transferring information comprises: means for coupling at least a first signal between said selective call receiver and said radio telephone.
7. The apparatus according to claim 5 wherein said means for charging comprises: means for electrically connecting said radio telephone and said selective call receiver; and means for controlling the power delivered to said second energy source from said first energy source.
8. The apparatus according to claim 5 wherein said radio telephone comprises an apparatus that functions as a radio telephony transceiver when coupled with said selective call receiver.
9. The apparatus according to claim 5 wherein said selective call receiver comprises an apparatus that functions as a selective call paging receiver when coupled with said radio telephone.
10. The apparatus according to claim 5 wherein said radio telephone and said selective call receiver are physically separable.
11. The apparatus according to claim 5 wherein radio telephone comprises an apparatus that functions as a radio telephony transceiver when detached from said selective call receiver.
12. The apparatus according to claim 5 wherein said selective call receiver comprises an apparatus that functions as a selective call paging receiver when detached from said radio telephone.
13. A system comprising: a radio telephone including a first energy source; a selective call receiver for receiving selective call messages and including a second energy source; charging means for charging said second energy source with power provided by said first energy source; and communication means for transferring information between said radio telephone and said selective call receiver.
14. The system according to claim 13 wherein said selective call receiver is capable of being selectively coupled to said radio telephone.
15. The system according to claim 13 wherein said communication means for transferring information comprises: first means for coupling at least a first signal between said selective call receiver and said radio telephone.
16. The system according to claim 13 wherein said charging means for charging comprises: means for electrically connecting said radio telephone and said selective call receiver; and means for controlling the power delivered to said second energy source from said first energy source.
17. The system according to claim 13 wherein said communication means further comprises call means for initiating a call on the radio telephone in response to said information transferred from said selective call receiver.
18. The system according to claim 16 wherein said information includes a phone number transferred between said selective call• receiver and said radio telephone.
19. The system according to claim 13 wherein said radio telephone comprises an apparatus that functions as a radio telephony transceiver when coupled with said selective call receiver.
20. The system according to claim 13 wherein said selective call receiver comprises an apparatus that functions as a selective call paging receiver when coupled with said radio telephone.
21. The system according to claim 13 wherein said radio telephone and said selective call receiver are physically separable.
22. The system according to claim 13 wherein radio telephone comprises an apparatus that functions as a radio telephony transceiver when detached from said selective call receiver.
23. The system according to claim 13 wherein said selective call receiver comprises an apparatus that functions as a selective call paging receiver when detached from said radio telephone.
PCT/US1991/000752 1990-03-05 1991-02-05 Radio telephone with secondary charging capability WO1991014332A1 (en)

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GB2326051A (en) * 1997-06-05 1998-12-09 Motorola Inc Mobile phone having multiple displays
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GB2267013B (en) * 1992-05-13 1996-01-17 Toyo Communication Equip Portable telephone
GB2267013A (en) * 1992-05-13 1993-11-17 Toyo Communication Equip Key arrangement for portable telephones
EP0590494A1 (en) * 1992-10-01 1994-04-06 Siemens Aktiengesellschaft Mobile telephone with a lock function
EP0617536A1 (en) * 1993-03-23 1994-09-28 Alcatel Mobile Communication France Portable and compact radiotelephone terminal
FR2703203A1 (en) * 1993-03-23 1994-09-30 Alcatel Radiotelephone Compact portable radiotelephone terminal.
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EP0674417A2 (en) * 1994-03-25 1995-09-27 Nec Corporation Call alerting auxiliary device for a portable radiotelephone
EP0674417A3 (en) * 1994-03-25 1995-11-08 Nec Corp
US5848362A (en) * 1994-03-25 1998-12-08 Nec Corporation Portable alerting unit for alerting a user to call arrival to portable radio apparatus
AU697379B2 (en) * 1994-03-25 1998-10-01 Nec Corporation Portable alerting unit for alerting a user to call arrival to portable radio apparatus
GB2290646B (en) * 1994-06-27 1998-03-11 Nec Corp A portable information processing system utilizing a selective call receiver
GB2290646A (en) * 1994-06-27 1996-01-03 Nec Corp Portable information processing system utilizing a selective call receiver
WO1996028922A1 (en) * 1995-03-16 1996-09-19 Volta Italia S.P.A. Battery pack for portable radio-pagers or radio-telephones, in particular cellular telephones
EP0746131A1 (en) * 1995-06-03 1996-12-04 Tonami Electronics Corporation Radio communication apparatus
FR2736794A1 (en) * 1995-06-13 1997-01-17 Motorola Inc PORTABLE ELECTRONIC DEVICE AND METHOD FOR COUPLING AN ELECTRIC CURRENT SUPPLY TO THE SAME
GB2302232A (en) * 1995-06-13 1997-01-08 Motorola Inc Portable electronic device and method for coupling power thereto
US5857148A (en) * 1995-06-13 1999-01-05 Motorola, Inc. Portable electronic device and method for coupling power thereto
GB2302232B (en) * 1995-06-13 1999-06-30 Motorola Inc Portable electronic device and method for coupling power thereto
US6141569A (en) * 1995-06-13 2000-10-31 Motorola, Inc. Portable electronic device and method of coupling power thereto
US7085553B1 (en) * 1995-08-31 2006-08-01 Oracle International Corporation Data communication protocols for a mobile-based client-server system over a wireless network
US5930724A (en) * 1996-06-12 1999-07-27 Nec Corporation Electronic apparatus with alarm function
WO1998000997A3 (en) * 1996-06-28 1998-07-09 Harris Corp Improvements to or relating to a multiple use wireless communications system and method having dynamic reallocation of communication frequencies
WO1998000997A2 (en) * 1996-06-28 1998-01-08 Harris Corporation Improvements to or relating to a multiple use wireless communications system and method having dynamic reallocation of communication frequencies
EP0817393A2 (en) * 1996-07-01 1998-01-07 Motorola Inc. Portable power source with visual image display
EP0817393A3 (en) * 1996-07-01 2000-09-13 Motorola Inc. Portable power source with visual image display
GB2326051A (en) * 1997-06-05 1998-12-09 Motorola Inc Mobile phone having multiple displays
GB2326051B (en) * 1997-06-05 2001-11-14 Motorola Inc Communication device having multiple displays and method of operating the same
SG81928A1 (en) * 1997-06-05 2001-07-24 Motorola Inc Communication device having multiple displays and method of operating the same
US6532375B2 (en) * 1998-04-24 2003-03-11 Micron Technology, Inc. Power-saving mode for portable communication devices
US6735456B2 (en) 1998-04-24 2004-05-11 Micron Technology, Inc. Power-saving mode for portable communication devices
WO2000079771A1 (en) * 1999-06-18 2000-12-28 Swisscom Mobile Ag Interchangeable battery pack for a mobile telephone
EP1237287A2 (en) * 2001-02-22 2002-09-04 Kabushiki Kaisha Toshiba Electronic device having power saving function and extension unit
EP1237287A3 (en) * 2001-02-22 2005-05-04 Kabushiki Kaisha Toshiba Electronic device having power saving function and extension unit
US6957082B2 (en) 2001-02-22 2005-10-18 Kabushiki Kaisha Toshiba Electronic device having power saving function and extension unit
GB2416953A (en) * 2004-08-06 2006-02-08 John Timothy Greaves Mobile telephone accommodates headset for recharging

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