Keyboard encoding system actuated by opening and closing of keyboard cover

• US 5,831,555 A
• Filed: 03/17/1997
• Issued: 11/03/1998
• Est. Priority Date: 05/10/1996
• Status: Expired due to Term

• Current Assignee: Transpacific IP Group Limited
• Original Assignee: Industrial Technology Research Institute
• Inventors: Wang, Yi-Kai, Lin, Wen-Chi, Huang, Chun-Pin, Yu, Der-Jang
• Primary Examiner(s): Horabik, Michael
• Assistant Examiner(s): Edwards, Jr., Timothy
• Application Number:
  US08/819,016
• Time in Patent Office: 596 Days
• Field of Search: 341/22, 341/176, 341/26, 345/169, 348/734, 359/142, 359/146, 359/148
• US Class Current: 341/26
• CPC Class Codes: H03M 11/02 Details
• CPC Class Codes: H04B 1/202 by remote control

Abstract

A cover-actuated keyboard encoding system is disclosed which can be used either alone or as a part of a universal remote control unit. It contains (a) a keyboard; (b) a memory for storing a plurality of control codes; (c) a special keyboard cover for covering the first keyboard; and (d) a computer program to convert the covered keys of the first keyboard into a control code. The keyboard cover is designed such that it contains one or more key-seat protrusions which are arranged such that they will be pressing against one or more of the first keys when the keyboard cover is closed. A CPU is programmed to scan the key board and convert the scanned keyboard value to a control code, in accordance with the number and locations of the keys that are being pressed during a power-on or a reset. This control code can be utilized as an initial code for identifying the brand and product type of the appliance to controlled by the universal remote control unit, thus allowing the universal remote control unit to operate as a conventional remote controller. The CPU can be further programmed to modify at least a portion of the initial control code if it detects that a universal key is pressed.

Claims

1. A cover-actuated keyboard encoding system, comprising:

(a) a first keyboard containing a plurality of first keys;

(b) a first memory for storing a plurality of control codes;

(c) a cover for covering said first keyboard, wherein said cover contains one or more specifically arranged key-seat protrusions which are arranged such that they will be pressing against one or more of correspondingly arranged said first keys when said cover is in a position covering said first keyboard; and

(d) a CPU containing (i) means for scanning said first key board, (ii) means for obtaining a scanned keyboard value according to the arrangement of said first keys that are being pressed when said keyboard cover is closed by said specifically arranged key-seat protrusions during a power-on or a reset;

(iii) means for retrieving a control code from said first memory according to said scanned keyboard value; and

(iv) means for performing a control function based on said retrieved control code or combining said retrieved control code with another control code.

2. The cover-actuated keyboard encoding system according to claim 1 which further comprises a second keyboard containing a plurality of second keys.

3. The cover-actuated keyboard encoding system according to claim 2 wherein said keyboard cover is a pivotable design and said second keyboard is provided on an outside face of said cover.

4. The cover-actuated keyboard encoding system according to claim 2 wherein said cover is a push-pull design such that it can be pushed to cover either said first keyboard or said second keyboard.

5. The cover-actuated keyboard encoding system according to claim 1 wherein said key-seat protrusions are movably arranged on said cover.

6. The cover-actuated keyboard encoding system according to claim 1 wherein said key-seat protrusions are fixed on said cover.

7. The cover-actuated keyboard encoding system according to claim 1 wherein said CPU further comprises means for overriding at least a portion of said retrieved control code when one or more of said second keys are pressed.

8. A method for generating a predetermined code during power-on or reset utilizing a keyboard, said method comprising the steps of:

(a) obtaining a cover which contains one of more specifically arranged key-seat protrusions which will press against one or more keys of a first keyboard when said cover covers said first keyboard;

(b) covering said first keyboard with said cover such that one of more of said specifically arranged key-seat protrusions are pressing against one or more correspondingly arranged said keys of said first keyboard; and

(c) scanning said first keyboard and converting a scanned keyboard value into a control code by retrieving from a computer memory said control code according to the arrangement of said keys that are being pressed when said keyboard cover is closed by said specifically arranged key-seat protrusions during the power-on or reset;

(d) outputting said control code.

9. The method for generating a predetermined code during power-on or reset according to claim 8 which farther comprises the step of storing said initial control code in a memory.

10. The method for generating a predetermined code during power-on or reset according to claim 9 which further comprises the step of combining said initial control code with subsequent control codes according to a predetermined format.

11. The method for generating a predetermined code during power-on or reset according to claim 8 wherein said keyboard also comprises a second keyboard and said method which further comprises the step of determining if a universal key of said second keyboard is pressed, if so, then modifying at least a portion of said initial control code.

12. A universal remote controller for use with a plurality of different types of appliances, comprising:

(a) a first keyboard containing a plurality of first keys for sending key pad signals;

(b) a first memory for storing a plurality of control codes;

(c) a CPU for compiling a set of said control codes according to a predetermined format;

(d) a second memory for storing said set of control codes compiled by said CPU;

(e) a transmitter for transmitting said set of standard control codes stored in said second memory; and

(f) a cover-actuated keyboard encoding system which contains;

(i) a cover for covering said first keyboard, wherein said keyboard contains one or more specifically arranged key-seat protrusions which are arranged such that they will be pressing against one or more of said first keys when said keyboard cover is covering said first keyboard; and

(ii) means provided in said CPU for scanning said first key board, obtaining a scanned keyboard value according to the number and locations of said keys that are being pressed when said keyboard cover is closed during a power-on or a reset, and retrieving an initial control code from said first memory according to said scanned keyboard value;

(g) wherein said initial control code contains product and brand information which will be combined with other control codes to be obtained from subsequent keyboard scanning.

13. The universal remote controller according to claim 12 which further comprises a second keyboard containing a plurality of second keys.

14. The universal remote controller according to claim 13 wherein said cover is a pivotable design and said second keyboard is provided on an outside face of said keyboard cover.

15. The universal remote controller according to claim 13 wherein said cover is a push-pull design such that it can be pushed to cover either said first keyboard or said second keyboard.

16. The universal remote controller according to claim 12 wherein said key-seat protrusions are movably arranged on said cover.

17. The universal remote controller according to claim 12 wherein said key-seat protrusions are fixed on said cover.

18. The universal remote controller according to claim 12 wherein said CPU further comprises means for overriding at least a portion of said retrieved control code when one or more of said second keys are being pressed.

19. The universal remote controller according to claim 12 which contains a battery compartment and wherein said cover is configured to cover said battery compartment during normal operations.