CN103149602A - Test device of geophysical exploration digital packet - Google Patents
Test device of geophysical exploration digital packet Download PDFInfo
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- CN103149602A CN103149602A CN2013100472370A CN201310047237A CN103149602A CN 103149602 A CN103149602 A CN 103149602A CN 2013100472370 A CN2013100472370 A CN 2013100472370A CN 201310047237 A CN201310047237 A CN 201310047237A CN 103149602 A CN103149602 A CN 103149602A
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Abstract
The invention relates to a test device of a geophysical exploration digital packet. The test device comprises a signal receiving equalizer circuit, a first data signal conversion circuit, a control circuit, a second data signal conversion circuit and a signal pre-emphasizing circuit. The signal receiving equalizer circuit equalizes signals of serial data received from a digital packet to be tested. The first data signal conversion circuit converts the signal equalized serial data to parallel data. The control circuit outputs pre-configured simulation parallel data to the second data signal conversion circuit and compares the parallel data converted by the first data signal conversion circuit with the simulation parallel data so as to test the data transmission function of the digital packet to be tested. The second data signal conversion circuit converts the input parallel data into the serial data. The signal pre-emphasizing circuit pre-emphasizes the serial data converted by the second data signal conversion circuit and sends the data to the digital packet to be tested. According to the device provided by the invention, more accurate and reliable reference data can be applied to application of geophysical exploration.
Description
The application is that application number is 201110161074.X, the applying date to be that on June 15th, 2011, denomination of invention are divided an application for " realizing the system and method for test geophysical survey digital packets " application for a patent for invention.
Technical field
The present invention relates to geophysical exploration technology, relate in particular to the test realization to system, the device and method of geophysical survey digital packets.
Background technology
System for acquiring seismic data is the equipment of most critical in seismic prospecting, and seismic exploration has working range and reaches greatly the characteristics such as the data acquisition transmission apparatus is many, and therefore, the work of testing for the mass data transmission unit also just seems extremely important.
The transmission of seismic data unit is called as digital packets, and digital packets can connect other transmission package of a plurality of acquisition channels and front and back level.Usually, the digital packets of a plurality of cascades is dragged by the boats and ships of being responsible for seismic exploration, is called as the prime digital packets near the digital packets that drags boats and ships, is called as the rear class digital packets away from the digital packets that drags boats and ships; The data that gather are transferred to step by step by the prime digital packets by the rear class digital packets and drag boats and ships.Therefore, a numeral need to receive the data of acquisition channel and the data of stages of digital bag thereafter when wrapping in work, and the data that receive to its prime digital packets transmission.
At present, the geological data of system for acquiring seismic data collection more and more is widely used, and for example is applied to oil field later stage fine development and ocean reservoir exploration etc.; Therefore whether function, the performance of digital packets be normal, be directly connected to reliability, the stability of earthquake data acquisition and the effect of using, therefore need to test function and the performance of the digital packets in acquisition system, comprise the test of data-transformation facility, command process function and various electric properties to digital packets, and test process had following ask for something:
(1) measure the power consumption situation of digital packets, and in the situation that the digital packets power consumption is abnormal can auto-breaking;
(2) measure the static electric property of digital packets, comprise inner a series of resistance and line break-make situation;
(3) data of unit transmission are docked in simulation with digital packets, comprise the data of acquisition channel and transmission channel.
Because a digital packets can connect at most 8 acquisition channels, usually need the digital packets acquisition system can simulate the data characteristic that is surrounded by the unit of information interaction with numeral to be measured, comprise mutual order and the transmitting-receiving of data; The digital packets number that wherein can comprise due to the digital packets acquisition system is more, the digital packets volume of transmitted data is also larger, digital packets to be measured is also needed to carry out the measurement of electric property, also need electric property and the data transmission performance of digital packets to be measured are measured successively in some occasion.This shows, large to the test job amount of digital packets to be measured, and content measurement is also more and complicated, if obviously be difficult to complete by the manual testing.
Yet, there is no one and can realize for digital packets the technical scheme of robotization ground test in existing system for acquiring seismic data, this obviously extremely is not suitable with the requirement of growing geological data application technology.For this reason, need to provide a kind of proving installation of geophysical survey digital packets, can realize change fast and automatically and test efficiently to function and the performance of flood tide digital packets in system for acquiring seismic data, thereby can satisfy the requirement of earthquake market demand.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of device of realizing testing the geophysical survey digital packets, can carry out automatic test to flood tide digital packets in system for acquiring seismic data.
In order to solve the problems of the technologies described above, the invention provides a kind of proving installation of geophysical survey digital packets, comprise the signal receiver equalization circuitry, the first data signal conversion circuit, control circuit, the second data signal conversion circuit and the signal preemphasis circuit that connect successively, wherein:
The signal receiver equalization circuitry after being used for the serial data that receives from digital packets to be measured is carried out signal equalization, is exported to the first data signal conversion circuit;
The first data signal conversion circuit after being used for the serial data of inputting is converted to parallel data, is exported to control circuit;
Control circuit is used for pre-configured simulation parallel data is exported to the second data signal conversion circuit, parallel data and the simulation parallel data of inputting is compared, to test the data-transformation facility of digital packets to be measured;
The second data signal conversion circuit after being used for the parallel data transformed into serial data to input, is exported to the signal preemphasis circuit;
The signal preemphasis circuit after being used for the serial data of input is carried out the processing of signal pre-emphasis, sends to digital packets to be measured.
Further,
The first data signal conversion circuit also prevents the parallel data that converts to exporting to control circuit after miscoding is processed;
After the second data signal conversion circuit is also carried out mistake proofing decoding processing to the parallel data of input, transformed into serial data is exported to the signal preemphasis circuit;
The signal preemphasis circuit sends to digital packets to be measured after the serial data of input is carried out the processing of signal voltage pre-emphasis.
Further, this proving installation also comprises the first digital packets command signal change-over circuit and the second digital packets command signal change-over circuit that is connected with control circuit successively, wherein:
The first digital packets command signal change-over circuit is used for converting the parallel command signal to the serial order signal that receives from digital packets to be measured and exports to control circuit;
Control circuit is exported to the second digital packets command signal change-over circuit with pre-configured simulation parallel command signal, parallel command signal and the simulation parallel command signal of inputting is compared, to test the command transfer function of digital packets to be measured;
The second digital packets command signal change-over circuit sends to test digital packets to be measured after being used for the parallel command signal of inputting is converted to the serial order signal.
Further, this proving installation also comprises the resistance measuring circuit that is connected between digital packets to be measured and control circuit control output end, wherein:
Control circuit makes control output end output one impedance matching circuit incoming control signal in the time will testing the signal transfer functions of digital packets to be measured; In the time will testing the data receiver resistance of digital packets to be measured, make control output end output one current source incoming control signal;
Resistance measuring circuit comprises a MUX and the impedance matching circuit and the current source circuit that are connected at least two input ends of this MUX, wherein:
MUX, the signal that is used for selecting impedance matching circuit under the control of impedance matching circuit incoming control signal select the constant current source signal of current source circuit as output signal under the control of current source incoming control signal as output signal;
Impedance matching circuit is for the data receiver of access digital packets to be measured under the selection of MUX, to test the signal transfer functions of digital packets to be measured;
Current source circuit is used under the selection of MUX to the resistance output constant current source of the data receiver of digital packets to be measured, to test the data receiver resistance of digital packets to be measured.
Further, this proving installation also comprises channel command signaling conversion circuit and the channel data signal change-over circuit that is connected with control circuit successively, wherein:
The channel command signaling conversion circuit is used for converting the serial test command signal that control terminal is exported to the concurrent testing command signal and exports to control circuit;
The channel data signal change-over circuit is used for converting the serial test data signal that control terminal is exported to the concurrent testing data-signal and exports to control circuit;
Control circuit is initiated the test of signal transfer functions and/or electric property according to concurrent testing command signal and the concurrent testing data-signal of input to digital packets to be measured.
The present invention has solved the difficult problem of geophysical survey digital packets test by structure dedicated test circuit device and corresponding software kit, this proving installation is pointed by force, test speed is fast, automaticity is high and test the characteristics such as flexible, efficient and the accuracy of digital packets function and performance test have been improved, and improved the reliability and stability of system for acquiring seismic data, for the application such as oil field later stage fine development and ocean reservoir exploration provide reference data accurately.
Description of drawings
Fig. 1 is the structured flowchart of realizing the system embodiment of geophysical survey digital packets test of the present invention;
Fig. 2 is the theory diagram of the proving installation embodiment of geophysical survey digital packets of the present invention;
Fig. 3 is the theory diagram of resistance measuring circuit in proving installation embodiment shown in Figure 2;
Fig. 4 is the theory diagram of the concrete implementing circuit of proving installation embodiment shown in Figure 2;
Fig. 5 is the process flow diagram of the method for testing embodiment of geophysical survey digital packets of the present invention.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, technical scheme of the present invention is at length set forth.The embodiment that below exemplifies only is used for description and interpretation the present invention, and does not consist of the restriction to technical solution of the present invention.
As shown in Figure 1, be the system embodiment that realizes the test of geophysical survey digital packets of the present invention, comprise interconnective digital packets proving installation 110 of the present invention and digital packets to be measured 120, wherein:
Digital packets proving installation 110 is used for the signal of simulation is sent to digital packets 120 to be measured, and will compare from the signal of digital packets 120 receptions to be measured and the signal of simulation, to test the signal transfer functions of digital packets 120 to be measured;
In said system embodiment,
Digital packets proving installation 110 sends to the signal of the simulation of digital packets 120 to be measured, comprises data and/or the order of simulation; To compare from the signal of digital packets 120 receptions to be measured and the signal of simulation, comprise and to compare from the data of digital packets 120 receptions to be measured and the data of simulation, and/or will compare from the order of digital packets 120 receptions to be measured and the order of simulation, with data and/or the command transfer function of testing digital packets 120 to be measured.
Said system embodiment also comprises control terminal 130, wherein:
Control terminal 130 (a for example mobile terminal) by USB interface or short range wireless transmission interface and 110 couplings of digital packets proving installation, is used for to digital packets proving installation 110 test transmission order and/or test datas;
The signal that digital packets proving installation 110 is pre-configured and storage is simulated, according to test command and/or the test data of control terminal 130 transmission, signal pre-configured and the storage simulation is sent to digital packets 120 to be measured successively, and will compare with corresponding signal of simulating from the signal that digital packets 120 to be measured receives successively, if comparative result is consistent, the signal transfer functions of judgement test digital packets 120 to be measured is normal, otherwise judges that its signal transfer functions is abnormal.
In said system embodiment,
Digital packets proving installation 110 is also tested the electric property of digital packets 120 to be measured, comprises test digital packets 120 data receiver resistance to be measured.
In said system embodiment, digital packets proving installation 110 further comprises signal receiver equalization circuitry, data signal conversion circuit 1, control circuit, data signal conversion circuit 2 and the signal preemphasis circuit that connects successively, wherein:
The signal receiver equalization circuitry after being used for the data that receive from digital packets to be measured are carried out signal equalization, is exported to data signal conversion circuit 1;
Data signal conversion circuit 1 after being used for the serial data of inputting is converted to parallel data, is exported to control circuit;
Control circuit is used for pre-configured simulation parallel data is exported to data signal conversion circuit 2, with the parallel data of inputting and the simulation parallel data of exporting to data signal conversion circuit 2 relatively, and to test the data-transformation facility of digital packets to be measured;
Data signal conversion circuit 2 after being used for the parallel data transformed into serial data to input, is exported to the signal preemphasis circuit;
The signal preemphasis circuit after being used for the serial data of input is carried out the processing of signal pre-emphasis, sends to digital packets to be measured.
Data signal conversion circuit 1 is also prevented the parallel data that converts to that miscoding processes, and for example 8 bit parallel data encodings is become corresponding 10 (or more multidigit) parallel datas;
Data signal conversion circuit 2 is also carried out mistake proofing decoding to the parallel data of input and is processed, and for example 10 (or more multidigit) parallel datas is decoded into corresponding 8 bit parallel data.
Above-mentioned digital packets proving installation 110 also comprises digital packets command signal change-over circuit 1 and the digital packets command signal change-over circuit 2 that is connected with control circuit successively, wherein:
Digital packets command signal change-over circuit 1 is used for and will converts the parallel command signal to the serial order signal that receives from digital packets to be measured, exports to control circuit;
Control circuit is exported to digital packets command signal change-over circuit 2 with pre-configured simulation parallel command signal, the parallel command signal of input is compared with the simulation parallel command signal of exporting to digital packets command signal change-over circuit 2, to test the command transfer function of digital packets to be measured;
Digital packets command signal change-over circuit 2 after being used for the parallel command signal of inputting is converted to the serial order signal, sends to test digital packets to be measured.
Above-mentioned digital packets proving installation 110 also comprises channel command signaling conversion circuit and the channel data signal change-over circuit that is connected with control circuit successively, wherein:
The channel command signaling conversion circuit is used for converting the serial test command signal that control terminal is exported to the concurrent testing command signal and exports to control circuit;
The channel data signal change-over circuit is used for converting the serial test data signal that control terminal is exported to the concurrent testing data-signal and exports to control circuit;
Control circuit is initiated the test of signal transfer functions and/or electric property according to concurrent testing command signal and the concurrent testing data-signal of input to digital packets to be measured.
Above-mentioned digital packets proving installation 110 also comprises the resistance measuring circuit that is connected between digital packets to be measured and control circuit control output end, wherein:
Control circuit makes control output end output one impedance matching circuit incoming control signal in the time will testing the signal transfer functions of digital packets to be measured; In the time will testing the data receiver resistance of digital packets to be measured, make control output end output one current source incoming control signal;
Resistance measuring circuit comprises a MUX and the impedance matching circuit and the current source circuit that are connected at least two input ends of this MUX, as shown in Figure 3, and wherein:
MUX, the signal that is used for selecting impedance matching circuit under the control of impedance matching circuit incoming control signal select the constant current source signal of current source circuit as output signal under the control of current source incoming control signal as output signal;
Impedance matching circuit is for the data receiver of access digital packets to be measured under the selection of MUX, to test the signal transfer functions of digital packets to be measured;
Current source circuit is used under the selection of MUX to the resistance output constant current source of the data receiver of digital packets to be measured, to test the data receiver resistance of digital packets to be measured.
As shown in Figure 4, be the concrete implementing circuit of digital packets proving installation 110 embodiment of the present invention shown in Figure 2, wherein:
Signal receiver equalization circuitry, signal preemphasis circuit correspondingly adopt respectively (the NS of National Semiconductor, National Semiconductor) Clc012 of company and Clc001 circuit, data signal conversion circuit 1, data signal conversion circuit 2 correspondingly adopt respectively 7b933 and the 7b923 circuit of CYPRESS company; Control circuit adopts field programmable gate array (FPGA, Field-Programmable Gate Array) circuit arrangement, certainly, in addition also can adopt microprocessor, microcontroller circuit; Digital packets command signal change-over circuit 1 and digital packets command signal change-over circuit 2 correspondingly adopt respectively Max3490e, Max3491e circuit, and channel command signaling conversion circuit, channel data signal change-over circuit correspondingly adopt respectively Max3044, Max3283e circuit.
The present invention is directed to said system, device embodiment, the method for testing embodiment of geophysical survey digital packets correspondingly also is provided, relate to digital packets proving installation of the present invention and digital packets to be measured, its flow process comprises as shown in Figure 5:
110: the signal that the digital packets proving installation is pre-configured and storage is simulated;
120: the digital packets proving installation is controlled and is selected impedance matching circuit is accessed digital packets data receiver to be measured, and the signal of simulating is sent to digital packets to be measured;
When the digital packets proving installation will be tested the signal transfer functions of digital packets to be measured, select impedance matching circuit is accessed digital packets data receiver to be measured by a MUX.
130: digital packets to be measured receives the signal that the digital packets proving installation sends as downgoing signal, and the signal that receives is sent to the digital packets proving installation as upward signal;
140: the signal that the digital packets proving installation will receive from digital packets to be measured and the signal comparison of the simulation of storage, to test the signal transfer functions of digital packets to be measured.
The digital packets proving installation sends to the signal of the simulation of digital packets to be measured, comprises data and/or the order of simulation; To compare from the signal of digital packets reception to be measured and the signal of simulation, comprise and to compare from the data of digital packets reception to be measured and the data of simulation, and/or will compare from the order of digital packets reception to be measured and the order of simulation, with data and/or the command transfer function of testing digital packets to be measured.
Said method embodiment also comprises:
150: the digital packets proving installation is controlled and is selected current source circuit is accessed digital packets data receiver to be measured, to test digital packets data receiver resistance to be measured.
When the electric property that will test digital packets to be measured when the digital packets proving installation is data receiver resistance, select to make the constant current source of current source circuit output flow into the resistance of digital packets data receiver to be measured to test a current source circuit access digital packets data receiver to be measured by above-mentioned MUX.
Said method embodiment also comprises (not shown in Fig. 5):
The digital packets proving installation is according to the test command and the test data that receive from control terminal, the pre-configured and storage of the signal of simulating, and carry out the test of signal transfer functions and the electric property of digital packets to be measured.
For those skilled in the art; after having understood content of the present invention and principle; can be in the situation that do not deviate from the principle and scope of the present invention; the method according to this invention is carried out various corrections and the change on form and details, but these are based on correction of the present invention with change still within claim protection domain of the present invention.
Claims (5)
1. the proving installation of a geophysical survey digital packets, is characterized in that, comprises the signal receiver equalization circuitry, the first data signal conversion circuit, control circuit, the second data signal conversion circuit and the signal preemphasis circuit that connect successively, wherein:
The signal receiver equalization circuitry after being used for the serial data that receives from digital packets to be measured is carried out signal equalization, is exported to the first data signal conversion circuit;
The first data signal conversion circuit after being used for the serial data of inputting is converted to parallel data, is exported to control circuit;
Control circuit is used for pre-configured simulation parallel data is exported to the second data signal conversion circuit, parallel data and the described simulation parallel data of inputting is compared, to test the data-transformation facility of digital packets to be measured;
The second data signal conversion circuit after being used for the parallel data transformed into serial data to input, is exported to the signal preemphasis circuit;
The signal preemphasis circuit after being used for the serial data of input is carried out the processing of signal pre-emphasis, sends to digital packets to be measured.
2. according to proving installation claimed in claim 1, it is characterized in that,
The first data signal conversion circuit also prevents the parallel data that converts to exporting to described control circuit after miscoding is processed;
After the second data signal conversion circuit is also carried out mistake proofing decoding processing to the parallel data of input, transformed into serial data is exported to described signal preemphasis circuit;
Described signal preemphasis circuit sends to digital packets to be measured after the serial data of input is carried out the processing of signal voltage pre-emphasis.
3. according to the described proving installation of claim 1 or 2, it is characterized in that, also comprise the first digital packets command signal change-over circuit and the second digital packets command signal change-over circuit that are connected with control circuit successively, wherein:
The first digital packets command signal change-over circuit is used for converting the parallel command signal to the serial order signal that receives from digital packets to be measured and exports to described control circuit;
Described control circuit is exported to the second digital packets command signal change-over circuit with pre-configured simulation parallel command signal, parallel command signal and the described simulation parallel command signal of inputting is compared, to test the command transfer function of described digital packets to be measured;
The second digital packets command signal change-over circuit sends to described test digital packets to be measured after being used for the parallel command signal of inputting is converted to the serial order signal.
4. according to the described proving installation of claim 1 or 2, it is characterized in that, also comprise the resistance measuring circuit that is connected between digital packets to be measured and control circuit control output end, wherein:
Described control circuit makes control output end output one impedance matching circuit incoming control signal in the time will testing the signal transfer functions of digital packets to be measured; In the time will testing the data receiver resistance of digital packets to be measured, make control output end output one current source incoming control signal;
Resistance measuring circuit comprises a MUX and the impedance matching circuit and the current source circuit that are connected at least two input ends of this MUX, wherein:
MUX, the signal that is used for selecting impedance matching circuit under the control of impedance matching circuit incoming control signal select the constant current source signal of current source circuit as output signal under the control of current source incoming control signal as output signal;
Impedance matching circuit is for the data receiver of the described digital packets to be measured of access under the selection of MUX, to test the signal transfer functions of described digital packets to be measured;
Current source circuit is used under the selection of MUX to the resistance output constant current source of the data receiver of described digital packets to be measured, to test the data receiver resistance of described digital packets to be measured.
5. according to the described proving installation of claim 1 or 2, it is characterized in that, also comprise the channel command signaling conversion circuit and the channel data signal change-over circuit that are connected with control circuit successively, wherein:
The channel command signaling conversion circuit is used for converting the serial test command signal that control terminal is exported to the concurrent testing command signal and exports to described control circuit;
The channel data signal change-over circuit is used for converting the serial test data signal that control terminal is exported to the concurrent testing data-signal and exports to described control circuit;
Described control circuit is initiated the test of signal transfer functions and/or electric property according to described concurrent testing command signal and the described concurrent testing data-signal of input to described digital packets to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310047237.0A CN103149602B (en) | 2011-06-15 | 2011-06-15 | A kind of proving installation of geophysical survey digital packets |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310047237.0A CN103149602B (en) | 2011-06-15 | 2011-06-15 | A kind of proving installation of geophysical survey digital packets |
| CN 201110161074 CN102269827B (en) | 2011-06-15 | 2011-06-15 | System and method for realizing testing of geophysical exploration digital packet |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN 201110161074 Division CN102269827B (en) | 2011-06-15 | 2011-06-15 | System and method for realizing testing of geophysical exploration digital packet |
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| CN103149602A true CN103149602A (en) | 2013-06-12 |
| CN103149602B CN103149602B (en) | 2016-01-27 |
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| CN201310047237.0A Expired - Fee Related CN103149602B (en) | 2011-06-15 | 2011-06-15 | A kind of proving installation of geophysical survey digital packets |
| CN 201110161074 Active CN102269827B (en) | 2011-06-15 | 2011-06-15 | System and method for realizing testing of geophysical exploration digital packet |
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| CN 201110161074 Active CN102269827B (en) | 2011-06-15 | 2011-06-15 | System and method for realizing testing of geophysical exploration digital packet |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354001A (en) * | 2011-06-16 | 2012-02-15 | 中国海洋石油总公司 | Device for testing geophysical exploration digital package |
| CN105068121A (en) * | 2015-07-30 | 2015-11-18 | 吉林大学 | Underground multi-node signal acquisition synchronous error correction device and method |
| CN108508477B (en) * | 2018-05-28 | 2020-06-09 | 中国石油天然气集团有限公司 | Seismic data acquisition system and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4398271A (en) * | 1979-12-07 | 1983-08-09 | Institut Francais Du Petrole | Device for data transmission between seismic data acquisition devices and a recording device |
| US20050111536A1 (en) * | 2003-11-24 | 2005-05-26 | International Business Machines Corporation | Method for determining jitter of a signal in a serial link and high speed serial link |
| CN1667427A (en) * | 2005-04-20 | 2005-09-14 | 威盛电子股份有限公司 | Chip testing method and relevant apparatus |
| US20090304054A1 (en) * | 2008-06-04 | 2009-12-10 | Stmicroelectronics, Inc. | Serdes with jitter-based built-in self test (bist) for adapting fir filter coefficients |
| US7756197B1 (en) * | 2003-11-26 | 2010-07-13 | Pmc-Sierra, Inc. | Built in self test (BIST) for high-speed serial transceivers |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7310287B2 (en) * | 2003-05-30 | 2007-12-18 | Fairfield Industries Incorporated | Method and apparatus for seismic data acquisition |
| US8593906B2 (en) * | 2009-08-21 | 2013-11-26 | Westerngeco L.L.C. | Seismic sensor holder and method |
| CN201740874U (en) * | 2010-06-11 | 2011-02-09 | 国家海洋局第一海洋研究所 | High resolution digital acquisition unit |
-
2011
- 2011-06-15 CN CN201310047237.0A patent/CN103149602B/en not_active Expired - Fee Related
- 2011-06-15 CN CN 201110161074 patent/CN102269827B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4398271A (en) * | 1979-12-07 | 1983-08-09 | Institut Francais Du Petrole | Device for data transmission between seismic data acquisition devices and a recording device |
| US20050111536A1 (en) * | 2003-11-24 | 2005-05-26 | International Business Machines Corporation | Method for determining jitter of a signal in a serial link and high speed serial link |
| US7756197B1 (en) * | 2003-11-26 | 2010-07-13 | Pmc-Sierra, Inc. | Built in self test (BIST) for high-speed serial transceivers |
| CN1667427A (en) * | 2005-04-20 | 2005-09-14 | 威盛电子股份有限公司 | Chip testing method and relevant apparatus |
| US20090304054A1 (en) * | 2008-06-04 | 2009-12-10 | Stmicroelectronics, Inc. | Serdes with jitter-based built-in self test (bist) for adapting fir filter coefficients |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102269827B (en) | 2013-06-19 |
| CN103149602B (en) | 2016-01-27 |
| CN102269827A (en) | 2011-12-07 |
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Granted publication date: 20160127 Termination date: 20180615 |