Touch panel lock and unlock function and hand-held device

• US 20060075250A1
• Filed: 09/24/2004
• Published: 04/06/2006
• Est. Priority Date: 09/24/2004
• Status: Abandoned Application

• Current Assignee: BenQ Corporation (Qisda Corporation)
• Original Assignee: BenQ Corporation (Qisda Corporation)
• Inventors: Liao, Chung-Wen
• Application Number:
  US10/950,088
• Publication Number:
  US 20060075250A1
• Time in Patent Office: Days
• US Class Current: 713/182
• CPC Class Codes: H04M 1/66 with means for preventing unauthorised or fraudulent calling verifying user identity or authority in secret or secure digital communications H04L9/32
• CPC Class Codes: H04M 1/724 User interfaces specially adapted for cordless or mobile telephones

Abstract

A lock and unlock function triggered by a touch panel of a hand-held device. The hand-held device detects a pattern input from the touch panel, and execute the lock/unlock function to enable or disable the keypad and the touch panel once the input pattern matches the specified pattern using a pattern recognition algorithm.

Claims

1. A touch panel lock/unlock method for a hand-held device, comprising:

retrieving a pattern sensed by a touch panel of the hand-held device;

determining if the retrieved pattern matches a specific pattern;

checking a status of the touch panel and issuing a relative command according to the status if the retrieved pattern matches the specific pattern; and

executing a lock/unlock function according to the relative command.

2. The touch panel lock/unlock method according to claim 1, wherein the specific pattern is a closed zone.

3. The touch panel lock/unlock method according to claim 2, wherein the pattern is determined to be a closed zone if there is at least one pixel on the touch panel has been touched more than once.

4. The touch panel lock/unlock method according to claim 2, wherein the pattern sensed by the touch panel that is recorded as a data entry comprising coordinates corresponding to sequentially touched pixels.

5. The touch panel lock/unlock method according to claim 4, wherein the data entry begin recording the coordinates once a stylus touches the touch panel and ends recording immediately after the stylus leaves the touch panel.

6. The touch panel lock/unlock method according to claim 4, wherein the pattern is determined to be a closed zone if there are at least two identical coordinates in the data entry.

7. The touch panel lock/unlock method according to claim 1, wherein the relative command is “

unlock”

if the status of the touch panel is locked, and the relative command is “

lock”

if the status of the touch panel is unlocked.

8. The touch panel lock/unlock method according to claim 1, wherein the lock/unlock function is executed to enable or disable at least a portion of the touch panel.

9. The touch panel lock/unlock method according to claim 8, wherein the hand-held device further comprises a keypad, and the lock/unlock function is executed to enable or disable at least some keys on the keypad.

10. The touch panel lock/unlock method according to claim 8, wherein a specific region of the touch panel is reserved and dedicated to sensing the pattern for locking/unlocking the touch panel, and the specific region is the only region of the touch panel which is not locked while the touch panel is locked by the lock/unlock function.

11. The touch panel lock/unlock method according to claim 8, wherein the lock/unlock function is executed to lock the unlocked touch panel only if the retrieved pattern that matches the specific pattern is sensed on a nonworking region of the touch panel.

12. The touch panel lock/unlock method according to claim 8, wherein the lock/unlock function is executed to lock the unlocked touch panel if the retrieved pattern that matches the specific pattern is sensed when the touch panel displays a predetermined frame.

13. The touch panel lock/unlock method according to claim 12, wherein the predetermined frame is shown when returning to a main menu.