Universal remote control code identification system

• US 6,236,350 B1
• Filed: 09/04/1998
• Issued: 05/22/2001
• Est. Priority Date: 09/05/1997
• Status: Expired due to Term

• Current Assignee: InterDigital Madison Patent Holdings (InterDigital, Inc.)
• Original Assignee: Thomson Licensing SA (Vantiva SA)
• Inventors: Andrews, Nathan William
• Primary Examiner(s): Horabik, Michael
• Assistant Examiner(s): Edwards, Jr., Timothy
• Application Number:
  US09/148,209
• Time in Patent Office: 991 Days
• Field of Search: 341/175, 341/176, 359/146, 359/148, 455/151.4, 340/825.22, 340/825.69, 340/825.72, 345/169
• US Class Current: 341/176
• CPC Class Codes: G08C 19/28 using pulse code
• CPC Class Codes: G08C 2201/20 Binding and programming of remote control devices
• CPC Class Codes: G08C 2201/92 Universal remote control

Abstract

A remote control apparatus and a method for identifying a reference code stored in a remote control apparatus. The remote control apparatus stores a reference code associated with a particular electronic device to be controlled and allows the user to determine the stored reference code by entering a code identification mode. In the code identification mode, the user selects a sequence of keys on the keypad and observes an indicator, such as an LED, after each key selection. The indicator is activated by a control unit when the number selected corresponds to the first digit in the reference code. The user then selects another sequence of keys on the keypad and observes the indicator after each key selection to identify the next digit in the reference code. The user repeats these steps to sequentially identify all of the digits in the reference code.

Claims

1. In a remote control apparatus having a reference code associated with a particular control signal format stored therein, the reference code comprising a sequence of code symbols, a method for identifying a particular sequence of code symbols, comprising the steps of:

providing a plurality of input keys on the remote control apparatus and an indicator, each input key representing a particular code symbol;

activating a code identification mode;

selecting one of the plurality of input keys and observing the indicator after the input key selection, the indicator being activated when a code symbol represented by a selected input key corresponds to a desired code symbol in the particular sequence of code symbols;

identifying the desired code symbol by repeating the selecting and observing step until the indicator is activated; and

repeating the selecting, observing and identifying steps for determining each code symbol in the particular sequence of code symbols.

2. The method according to claim 1, wherein said providing step comprises providing a numeric keypad on the remote control apparatus.

3. The method according to claim 1, wherein said providing step comprises providing one of a visual and audible indicator on the remote control apparatus.

4. The method according to claim 1, wherein said activating step comprises activating a code identification mode by selecting a particular sequence of input keys.

5. The method according to claim 1, wherein said providing step comprises providing a device key for selecting one of a plurality of stored reference codes, each reference code associated with a particular electronic device, to be used in generating remote control signals, and said activating step comprises activating a code identification mode to identify a selected one of the plurality of stored reference codes.

6. A remote control apparatus, comprising:

an input unit comprising a plurality of input keys, each said input key representing a particular code symbol;

an indicator unit;

a transmitter unit;

a memory having a reference code associated with a particular control signal format stored therein, said reference code comprising a sequence of code symbols, and

a control unit for causing said transmitter unit to transmit a control signal in accordance with said reference code in response to a user input, said control unit operating in a code identification mode of operation for allowing user to sequentially identify each code symbol of said reference code in response to a sequence of user input key selections, wherein said control unit controls said indicator unit in response to a user input key selection by activating said indicator unit when a code symbol represented by a user selected input key corresponds to a desired code symbol in said sequence of code symbols, said sequence of user input key selections being repeated to determine each code symbol in the sequence of code symbols.

7. The apparatus according to claim 6, wherein said input unit comprises a numeric keypad.

8. The apparatus according to claim 6, wherein said reference code comprises a three digit numeric code associated with a particular electronic device.

9. The apparatus according to claim 6, wherein said reference code comprises a plurality of reference codes, each said reference code being associated with a particular type of electronic device.

10. The apparatus according to claim 9, wherein said input unit comprises a device key for configuring said control unit to transmit control signals associated with a selected one of said reference codes.

11. The apparatus according to claim 9, wherein said indicator unit comprises one of a visual and audible indicator.

12. The apparatus according to claim 9, wherein said memory is incorporated into said control unit.