System and method for improved infrared communication between consumer appliances
View Patent ↗Optical or electrical attenuation is provided at the infrared (IR) receiver of a first device, such as a remote control, together with a commensurate increase in output of the IR transmitter of an appliance, such as a set top box, to improve the signal-to-noise ratio of IR communications with respect to any background infrared radiation, such as radiation from a plasma display screen.
1. A method for facilitating infrared (IR) communications from a first device to a second device in the presence of an external IR noise source being generated by a third device, comprising:
initiating an IR transmission from the first device to the second device;
detecting at the second device a level of external IR noise being generated by the third device; and
causing the IR transmission to be dynamically attenuated at the second device as a function of the detected level of external IR noise being generated by the third device.
2. The method as recited in claim 1 , comprising electrically attenuating the IR transmission at the second device.
3. The method as recited in claim 1 , comprising optically attenuating the IR transmission at the second device.
4. The method as recited in claim 1 , wherein the second device comprises a remote control adapted to control functions of at least the first device and an IR receiver for receiving the IR transmission from the first device and wherein the first device comprises a set top box.
5. The method as recited in claim 4 , wherein the remote control comprises a lens cover for the IR receiver and the lens cover optically attenuates the IR transmission.
6. The method as recited in claim 4 , comprising electrically attenuating the IR transmission once received by the IR receiver.
7. The method as recited in claim 1 , comprising boosting a level of the IR transmission at the first device.
8. The method as recited in claim 7 , comprising dynamically boosting a level of the IR transmission at the first device as a function of the detected level of external IR noise being generated by the third device.
9. The method as recited in claim 8 , comprising causing the second device to instruct the first device to boost the level of the IR transmission as a function of the detected level of external IR noise being generated by the third device.
10. The method as recited in claim 7 , wherein the level of the IR transmission at the first device is boosted in response to a signal being transmitted to the first device by the second device.
11. The method as recited in claim 10 , wherein the level of the IR transmission at the first device is boosted in response to the first device detecting an absence of a signal being transmitted by the second device.
12. A method for facilitating infrared (IR) communications from a set top box device to a remote control device in the presence of an IR noise being generated by a display device, comprising:
initiating an IR transmission from the set top box device to the remote control device; and
dynamically boosting at the set top box a level of the IR transmission from the set top box device to the remote control device in response to the set top box device detecting an absence of a signal being transmitted to the set top box device by the remote control device.
13. The method as recited in claim 12 , wherein the display device comprises a plasma television.
14. The method as recited in claim 12 , wherein the IR transmission comprises remote control configuration data.
15. The method as recited in claim 12 , wherein the level of the IR transmission is dynamically boosted at the set top box until the set top box device detects a recognizable signal being transmitted to the set top box device by the remote control device.