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US007453438B2

(12) United States Patent

Okamura

(io) Patent No.: (45) Date of Patent:

US 7,453,438 B2 Nov. 18, 2008

(54) INFORMATION PROCESSING APPARATUS AND METHOD

(75) Inventor: Shuichi Okamura, Ichihara (JP)

(73) Assignee: Canon Kabushiki Kaisha, Tokyo (JP)

( * ) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 U.S.C. 154(b) by 725 days.

(21) Appl.No.: 11/080,419

(22) Filed: Mar. 16, 2005

(65) Prior Publication Data

US 2005/0212763 Al Sep. 29, 2005

(30) Foreign Application Priority Data

Mar. 26,2004 (JP) 2004-093164

(51) Int. CI.

G09G 5/00 (2006.01)

(52) U.S. CI 345/156; 345/173

(58) Field of Classification Search 345/156 173;

715/771,773,778; 713/182 See application file for complete search history.

(56) References Cited

U.S. PATENT DOCUMENTS

5,894,307 A 4/1999 Ohnoetal.

6,037,882 A * 3/2000 Levy 341/20

6,130,665 A * 10/2000 Ericsson 345/173

6,965,374 B2 * 11/2005 Villetetal 345/169

7,030,890 Bl 4/2006 Jouetetal.

7,337,410 B2* 2/2008 Lin 715/773

2005/0146508 Al * 7/2005 Kirklandetal 345/169

2007/0097085 Al * 5/2007 Iwatsuki 345/173

2008/0150899 Al * 6/2008 Lin 345/168

FOREIGN PATENT DOCUMENTS

JP 2003-66826 3/2003

KR 2002-0050785 6/2002

WO 01/33344 5/2001

* cited by examiner

Primary Examiner—Nitin Patel

(74) Attorney, Agent, or Firm—Fitzpatrick, Cella, Harper & Scinto

(57) ABSTRACT

An information processing apparatus and method for ensuring security when a virtual keyboard is used while an image displayed on a display is disclosed to the outside are provided. According to an embodiment of the present invention, it is determined whether or not a virtual keyboard is displayed on a display (S100). If a virtual keyboard is displayed, it is determined whether or not a target character input window onto which characters are input by using the virtual keyboard is a password input window (S101). If this window is the password input window, VRAM distribution is temporarily stopped (S102). With this operation, the distribution of the image stored in the VRAM (i.e., the image displayed on the display) is stopped while a virtual input device is displayed on the display and the target character input window is the password input window.

3 Claims, 12 Drawing Sheets

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