# US 8,788,857 B2 · System and method for providing a low power remote control

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- Number: US 8,788,857 B2
- Document ID: US8788857B2
- Status: Granted
- Kind: B2
- Application number: 13/028,664
- Filed: 2011-02-16
- Published: 2012-03-15
- Granted: 2014-07-22
- Earliest claimed: 2010-09-09
- Assignees: Universal Electronics Inc.
- Applicants: Arsham Hatambeiki; Christopher Lee Sommerville; Weidong William Wang
- Inventors: Arsham Hatambeiki; Christopher Lee Sommerville; Weidong William Wang
- Web page: https://patentgrep.com/patent/US8788857B2

## CPC

- G06F 1/3259: {Power saving in cursor control device, e.g. mouse, joystick, trackball}
- G06F 1/3203: Power management, i.e. event-based initiation of a power-saving mode
- G06F 1/3243: {Power saving in microcontroller unit}
- G08C 17/00: Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C 2201/12: Power saving techniques of remote control or controlled devices
- Y02D 10/00: Energy efficient computing, e.g. low power processors, power management or thermal management
- Y02D 30/50: in wire-line communication networks, e.g. low power modes or reduced link rate
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- G08C: TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS (fluid pressure transmitting systems F15B; mechanical means for transferring the output of a sensing member into a different variable G01D5/00; mechanical control systems G05G)
- Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE

## Abstract

To conserve power in a controlling device having a processing device in communication with an input element and a transmitting device the processing device is caused to be placed into a low-power state for at least a portion of a transmission inactive interval intermediate the transmission of at least a pair of command frames. The command frames are caused to be transmitted by the transmitting device in response to an activation of the input element sensed via the processing device to thereby command a functional operation of an intended target device.

## Claims

### Claim 1

A method for conserving power in a controlling device having a processing device in communication with an input element and a transmitting device, comprising:
in response to an activation of the input element sensed via the processing device, causing the transmitting device to transmit at least two command frames to thereby command a functional operation of an intended target device; and
causing the processing device to be transitioned from an active-power state into a low-power state for an amount of time which occurs during and which is no longer than a transmission inactive interval intermediate the transmission of the at least two command frames;
wherein the amount of time the processing device is caused to be placed into the low-power state is adjustable by the controlling device.

### Claim 2 (depends on 1)

The method as recited in claim 1, wherein the controlling device adjusts the amount of time the processing device is caused to be placed into the low-power state as a function of data values to be transmitted in the at least two command frames.

### Claim 3 (depends on 1)

The method as recited in claim 1, wherein the controlling device adjusts the amount of time the processing device is caused to be placed into the low-power state as a function of a command protocol to be used to transmit the at least two command frames.

### Claim 4 (depends on 1)

The method as recited in claim 1, wherein the controlling device adjusts the amount of time the processing device is caused to be placed into the low-power state as a function of an encoding scheme to be used to transmit the at least two command frames.

### Claim 5 (depends on 1)

The method as recited in claim 1, wherein the controlling device adjusts the amount of time the processing device is caused to be placed into the low-power state prior to the transmission of at least a first one of the at least two command frames.

### Claim 6 (depends on 1)

The method as recited in claim 1, wherein the controlling device adjusts the amount of time the processing device is caused to be placed into the low-power state subsequent to the transmission of at least a first one of the at least two command frames.

### Claim 7 (depends on 1)

The method as recited in claim 1, wherein the controlling device adjusts the amount of time the processing device is caused to be placed into the low-power state prior to the transmission of each of the at least two command frames.

### Claim 8 (depends on 1)

The method as recited in claim 1, wherein the controlling device adjusts the amount of time the processing device is caused to be placed into the low-power state subsequent to the transmission of each of the at least two command frames.

### Claim 9 (depends on 1)

The method as recited in claim 1, comprising using a low-power timer to measure the amount of time the processing device is caused to be placed into the low-power state.

### Claim 10 (depends on 9)

The method as recited in claim 9, comprising using a comparison of a clock speed of a main system clock versus a clock speed of a low-power clock to calibrate the low-power timer used to measure the amount of time the processing device is caused to be placed into the low-power state.

### Claim 11 (depends on 9)

The method as recited in claim 9, comprising using a procedure to calibrate the low-power timer.

### Claim 12 (depends on 11)

The method as recited in claim 11, wherein the procedure to be calibrate the low-power timer is used multiple times during the transmission inactive interval intermediate the transmission of the at least two command frames.