# US 2015/0085187 A1 · Method and apparatus for burst mode video processing with inband link power management

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- Number: US 2015/0085187 A1
- Document ID: US20150085187A1
- Status: Published application
- Kind: A1
- Application number: 14/032,846
- Filed: 2013-09-20
- Published: 2015-03-26
- Earliest claimed: 2013-09-20
- Inventors: Huimin Chen; George R. Hayek; Robert Jamie Johnston; Pravas Pradhan; Satyanarayana Avadhanam; Seh W. Kwa
- Web page: https://patentgrep.com/patent/US20150085187A1

## CPC

- H04N 5/63: Generation or supply of power specially adapted for television receivers
- G09G 5/006: {Details of the interface to the display terminal (specific for a display terminal using a CRT G09G1/167; using a flat panel G09G3/2096; circuits for interfacing with colour displays G09G5/04)}
- H04N 5/38: Transmitter circuitry {for the transmission of television signals according to analogue transmission standards} (H04N5/14 takes precedence)
- H04N 5/44: Receiver circuitry {for the reception of television signals according to analogue transmission standards} (H04N5/14 takes precedence)
- H04N 7/0127: {by changing the field or frame frequency of the incoming video signal, e.g. frame rate converter}
- G09G 5/003: {Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto (specific for a CRT G09G1/165; for a flat panel G09G3/2092)}
- G09G 5/36: characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
- G09G 2320/103: Detection of image changes, e.g. determination of an index representative of the image change
- G09G 2330/021: Power management, e.g. power saving
- G09G 2340/02: Handling of images in compressed format, e.g. JPEG, MPEG
- G09G 2360/18: Use of a frame buffer in a display terminal, inclusive of the display panel
- G09G 2370/04: Exchange of auxiliary data, i.e. other than image data, between monitor and graphics controller
- G09G 2370/10: Use of a protocol of communication by packets in interfaces along the display data pipeline
- H04N 21/4122: {additional display device, e.g. video projector (digital output for controlling a plurality of local displays G06F3/1423)}
- H04N 21/43632: {involving a wired protocol, e.g. IEEE 1394 (high-speed IEEE 1394 serial bus H04L12/40052)}
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION
- G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00)

## Abstract

An electronic device, method, and at least one machine readable medium for burst mode processing of video data with inband link power management are provided herein. The method includes receiving a pixel stream, transferring the received stream as currently-available frame-formatted video data to a sink in burst at high data rate, and entering a reduced-power operating state until transfer of additional currently-available video data is enabled. The method may include issuing inband command signals to cause the link to enter into and exit from the reduced-power link operating states.

## Claims

### Claim 1

An electronic device, comprising:
a source system and a sink system, the source system to receive a pixel stream and format the pixel stream into frames of currently-available video data, the source system to transfer the currently-available video data to the sink system in a burst at a high-speed data rate.

### Claim 2 (depends on 1)

The electronic device of claim 1, the source system further comprising logic to analyze characteristics of the currently-available video data and, based at least in part upon those characteristics, to enter the electronic device into and exit from a reduced-power operating state.

### Claim 3 (depends on 2)

The electronic device of claim 2, wherein the characteristics of the currently-available video data that are analyzed include the inter-frame idle duration.

### Claim 4 (depends on 3)

The electronic device of claim 3, wherein the reduced-power operating state comprises one of a plurality of predetermined reduced-power operating states, the reduced-power operating state into which the electronic device is entered being selected based at least in part upon the inter-frame idle duration of the currently-available video data.

### Claim 5 (depends on 4)

The electronic device of claim 4, wherein a command-enter signal is to be issued by the source system and transferred to the sink system to cause the source and sink systems to enter the reduced-power operating state, a command-exit signal to be issued by the source system and transferred to the sink system to cause the source and sink systems to exit the reduced-power operating state.

### Claim 6 (depends on 5)

The electronic device of claim 5, wherein the command-enter and command-exit signals comprise inband signals.

### Claim 7 (depends on 5)

The electronic device of claim 5, further comprising a first transmitter and a first receiver, the first transmitter to transfer the currently-available video data to the first receiver, and a second transmitter and a second receiver, the second transmitter to transfer the command-exit signal to the second receiver.

### Claim 8 (depends on 7)

The electronic device of claim 7, wherein the second transmitter and second receiver comprise a respective low power transmitter and a low power receiver relative to a power level of the first transmitter and first receiver.

### Claim 9 (depends on 8)

The electronic device of claim 8, wherein the command-exit signal comprises a low frequency periodic signal, or a DC signal of variable pulse duration, to be issued by the second transmitter to the second receiver.

### Claim 10 (depends on 1)

The electronic device of claim 1, wherein the sink system includes one of a video display panel, television, computer display, and a video recorder.

### Claim 11

A method for processing video data in an electronic device, comprising:
receiving, at the electronic device, a stream of pixel data;
formatting, by the electronic device, the pixel data into frames of currently-available video data;
transferring the currently-available video data from the electronic device to a receiving system in a high data rate burst; and
entering the electronic device into a reduced-power operating state upon one of completion of the transferring of currently-available video data to the receiving system and a pause in the transferring of currently-available video data.

### Claim 12 (depends on 11)

The method of claim 11, further comprising exiting the reduced-power operating state and entering an active operating state when transfer of additional currently-available video data is enabled.

### Claim 13 (depends on 11)

The method of claim 11, wherein the reduced-power operating state comprises a plurality of predetermined reduced-power operating states, the method further comprising selecting the reduced-power operating state from the plurality of predetermined reduced-power operating states dependent at least in part upon inter-frame idle duration of the currently-available video data.

### Claim 14 (depends on 11)

The method of claim 11, further comprising issuing a command-enter signal to cause the electronic device to enter the reduced-power operating state and a command-exit signal to return the electronic device to the active operating state.

### Claim 15 (depends on 14)

The method of claim 14, wherein at least one of the command-enter and command-exit signals comprises a low-power inband signal.

### Claim 16

A method for reducing power consumption in an electronic video-processing device, comprising:
receiving, at a source system of the electronic device, a stream of pixel data;
formatting the pixel data into frames of currently-available video data;
transferring, in a high data bit rate burst, the currently-available video data to a sink system of the electronic device; and
entering the electronic device into a reduced-power operating state upon occurrence of one of completion of transferring and a pause in transferring.

### Claim 17 (depends on 16)

The method for reducing power consumption of claim 16, wherein entering the electronic device into a reduced-power operating state comprises analyzing inter-frame idle duration of the currently-available video data.

### Claim 18 (depends on 17)

The method for reducing power consumption of claim 17, further comprising the electronic device issuing an inband command signal to cause the device to enter the reduced-power operating state.

### Claim 19 (depends on 18)

The method for reducing power consumption of claim 18, further comprising exiting from the reduced-power operating state and entering an active operating state upon a resumption of transferring.

### Claim 20

At least one non-transitory machine readable medium having instructions stored therein that, in response to being executed on an electronic device, cause the electronic device to:
format a received stream of pixel data into frames of currently-available video data;
transfer the currently-available video data from the electronic device to a receiving system in a high data rate burst; and
enter into a reduced-power operating state upon one of completion of the transfer of currently-available video data to the receiving system and a pause in the transfer.

### Claim 21 (depends on 20)

The machine readable medium of claim 20, further comprising determining inter-frame idle duration and, dependent at least in part thereon, entering into the reduced-power operating state.

### Claim 22 (depends on 21)

The machine readable medium of claim 21, wherein the instructions further cause the electronic device to exit the reduced-power operating state and enter an active operating state when transfer of additional currently-available video data is enabled.

### Claim 23 (depends on 22)

The machine readable medium of claim 22, wherein the reduced-power operating state comprises a plurality of predetermined reduced-power operating states, the method further comprising selecting the reduced-power operating state from the plurality of predetermined reduced-power operating states dependent at least in part upon the inter-frame idle duration of the currently-available video data.

### Claim 24 (depends on 23)

The machine readable medium of claim 23, wherein the instructions further cause the electronic device to issue at least one inband signal to change operating states.