Self learning IR remote control transmitter

• US 5,691,710 A
• Filed: 11/02/1992
• Issued: 11/25/1997
• Est. Priority Date: 11/02/1992
• Status: Expired due to Term

• Current Assignee: Zenith Electronics Corporation (LG Corporation)
• Original Assignee: Zenith Electronics Corporation (LG Corporation)
• Inventors: Pietraszak, Michael G., Stacy, Carl W.
• Primary Examiner(s): Horabik, Michael
• Assistant Examiner(s): MERZ, EDWARD W
• Application Number:
  US07/969,896
• Time in Patent Office: 1,849 Days
• Field of Search: 340/825.61, 340/825.72, 359/142, 359/143, 359/144, 359/147, 359/148
• US Class Current: 340/12.28
• CPC Class Codes: G08C 19/28 using pulse code
• CPC Class Codes: H04B 1/202 by remote control

Abstract

A learning type IR function code transmitter includes a memory storing the IR function codes of a large variety of different brands of transmitters. The learning transmitter includes an IR receiver and a microprocessor for detecting IR function codes transmitted from a teaching transmitter. The memory is searched when an on/off IR function code is required from the teaching transmitter. If a match is found between the received IR function code and one of the stored IR function codes, and if a unique set of IR function codes corresponding to the identified brand of teaching transmitter IR function codes exists, the transmitter keyboard is configured to operate with the function codes that correspond to the teaching transmitter. Provision is made for teaching one or more certain IR function codes to selected keys of the learning transmitter where such certain IR function codes are not found in the memory.

Claims

1. A method of teaching a remote control device having a memory containing the IR function codes of a plurality of different IR signal transmitters, some of which have the same power on/off code, to transmit the IR function codes of one of said plurality of different signal transmitters comprising:

transmitting an on/off IR function code from said one signal transmitter to said remote control device;

receiving the transmitted on/off IR function code;

searching said memory for said received on/off IR function code to determine whether said received on/off IR function code is in said memory and if so;

sequentially checking said on/off IR function code to determine a unique match in said memory; and

configuring the keyboard of said remote control device for transmitting other IR function codes in said memory corresponding to said one signal transmitter.

2. The method of claim 1 wherein said searching comprises temporarily storing said received on/off IR function code;

and

determining the format of said received on/off IR function code.

3. The method of claim 2 wherein said searching further comprises determining whether the on/off durations of said received on/off IR function code includes any custom IR code in said memory.

4. The method of claim 3 further comprising:

determining whether one or more IR function codes of said one signal transmitter are not in said memory; and

instructing that the function code corresponding to one or more individual keys of said one signal transmitter be taught to said remote control device before said configuring.