Relaying key code signals through a remote control device

• US 9,355,553 B1
• Filed: 05/21/2011
• Issued: 05/31/2016
• Est. Priority Date: 12/16/2003
• Status: Active Grant

• Current Assignee: Universal Electronics, Inc.
• Original Assignee: UEI Cayman Incorporated (Universal Electronics, Inc.)
• Inventors: Mui, Daniel SauFu
• Primary Examiner(s): Brown, Vernal
• Application Number:
  US13/068,820
• Time in Patent Office: 1,837 Days
• Field of Search: 340/13.24, 340/12.5, 340/12.22
• US Class Current: 1/1
• CPC Class Codes: G08C 15/04 the signals being modulated on carrier frequencies
• CPC Class Codes: G08C 17/00 Arrangements for transmitting signals characterised by the use of a wireless electrical link
• CPC Class Codes: G08C 17/02 using a radio link
• CPC Class Codes: G08C 19/28 using pulse code
• CPC Class Codes: G08C 23/04 using light waves, e.g. infrared

Abstract

Upon receiving a keystroke indicator signal from a remote control device, a key code generator device identifies a codeset usable to communicate with a selected consumer device. The keystroke indicator signal contains an indication of a pressed key, which corresponds to a function of the selected consumer device. Using the identified codeset and the key indication, the key code generator device generates a key code and modulates that key code onto a radio frequency carrier signal, thereby generating a first key code signal. The remote control device receives the first key code signal from the key code generator device and modulates the key code onto an infrared frequency carrier signal, thereby generating a second key code signal. The remote control device relays the key code to the selected consumer device in the second key code signal. The key code causes the selected consumer device to perform the desired function.

Claims

1. A method comprising:

(a) receiving a keystroke indicator from a remote control device, wherein the keystroke indicator indicates a key on the remote control device that a user has selected;

(b) generating a key code within a key code generator device using the keystroke indicator;

(c) formatting the key code for transmission and thereby generating a key code signal; and

(d) transmitting the key code signal from the key code generator device to an electronic consumer device, wherein the key code generated in (b) is part of a codeset, and wherein the codeset comprises timing information that describes a digital one and a digital zero.

2. A method comprising:

(a) receiving a keystroke indicator from a remote control device, wherein the keystroke indicator indicates a key on the remote control device that a user has selected;

(b) generating a key code within a key code generator device using the keystroke indicator;

(c) formatting the key code for transmission and thereby generating a key code signal;

(d) transmitting the key code signal from the key code generator device to an electronic consumer device using a first modulation technique;

(f) determining that the key code signal using the first modulation technique cannot be used to communicate with the electronic consumer device; and

(e) transmitting the key code signal from the key code generator device to the electronic consumer device using a second modulation technique.