# US 2012/0075188 A1 · Techniques to control display activity

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- Number: US 2012/0075188 A1
- Document ID: US20120075188A1
- Status: Published application
- Kind: A1
- Application number: 12/889,681
- Filed: 2010-09-24
- Published: 2012-03-29
- Earliest claimed: 2010-09-24
- Assignees: Intel Corporation
- Inventors: Seh W. Kwa; Ravi Ranganathan; Jun Shi; Maximino Vasquez
- Web page: https://patentgrep.com/patent/US20120075188A1

## CPC

- G06F 3/14: Digital output to display device {; Cooperation and interconnection of the display device with other functional units}
- G06F 9/06: using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F 13/14: Handling requests for interconnection or transfer
- G09G 3/2096: {Details of the interface to the display terminal specific for a flat panel (suitable for both CRT and flat panel G09G5/006; specific for a CRT G09G1/167)}
- G09G 5/00: Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators (image data processing or generation, in general G06T)
- G06F 1/3265: {Power saving in display device}
- G06F 13/00: Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units (interface circuits for specific input/output devices G06F3/00 {; multiprogram control therefor G06F9/46}; multiprocessor systems G06F15/16 )
- G09G 2330/021: Power management, e.g. power saving
- 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 2370/14: Use of low voltage differential signaling [LVDS] for display data communication
- H04L 25/0272: {Arrangements for coupling to multiple lines, e.g. for differential transmission}
- Y02D 10/00: Energy efficient computing, e.g. low power processors, power management or thermal management
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- 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)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- 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

Techniques are described to transmit commands to a display device during vertical or horizontal blanking intervals. The commands can be transmitted using fields that would otherwise be used to transmit color information. A Low Voltage Differential Signaling (LVDS) compliant interface can be used to transmit the commands.

## Claims

### Claim 1

A method comprising:
receiving a command during one of a vertical or horizontal blanking interval, the command specified using fields allocated for color data and timing control and
requesting to perform the command based in part on the information in the fields reserved for color data.

### Claim 2 (depends on 1)

The method of claim 1, wherein the command comprises a command to store a frame in a frame buffer.

### Claim 3 (depends on 1)

The method of claim 1, wherein the command comprises a command to enter self refresh mode.

### Claim 4 (depends on 1)

The method of claim 1, wherein the command comprises a command to exit self refresh mode.

### Claim 5 (depends on 1)

The method of claim 1, wherein the command comprises a command to perform a partial screen update.

### Claim 6 (depends on 1)

The method of claim 1, wherein the command comprises a command to end performing a partial screen update.

### Claim 7 (depends on 1)

The method of claim 1, wherein the fields allocated for color data comprise fields in a frame specified in Section 3.1.4 of Panel Standardization Working Group's Industry Standard Panels for Monitors—15.0-inch (ISP 15-inch) Mounting and Top Level Interface Requirements (Version 1.1), Mar. 12, 2003.

### Claim 8 (depends on 1)

The method of claim 1, wherein the fields allocated for color data comprise four or more bits.

### Claim 9 (depends on 1)

The method of claim 1, wherein the receiving a command comprises receiving a command using a Low Voltage Differential Signaling (LVDS) compliant interface.

### Claim 10

A method comprising:
requesting transmission of a command during one of a vertical or horizontal blanking interval, the command specified using fields allocated for color data and timing control.

### Claim 11 (depends on 10)

The method of claim 10, wherein the command comprises one of a command to store a frame in a frame buffer, a command to enter self refresh mode, and a command to exit self refresh mode and wherein the transmission uses a Low Voltage Differential Signaling (LVDS) compliant interface.

### Claim 12 (depends on 10)

The method of claim 10, wherein the command comprises one of a command to perform a partial screen update and a command to end performing a partial screen update.

### Claim 13 (depends on 10)

The method of claim 10, wherein the fields allocated for color data comprise fields in a frame specified in Section 3.1.4 of Panel Standardization Working Group's Industry Standard Panels for Monitors—15.0-inch (ISP 15-inch) Mounting and Top Level Interface Requirements (Version 1.1), Mar. 12, 2003.

### Claim 14

A system comprising:
at least one antenna;
a display device;
a frame buffer;
a host system; and
an interface between the display device and the host system, the host system comprising:
logic to form a communication for transmission to the display device using the interface, the communication transmitted during one of a vertical or horizontal blanking interval and the communication including a command specified using fields allocated for color data and timing control.

### Claim 15 (depends on 14)

The system of claim 14, wherein the fields allocated for color data comprise fields in a frame specified in Section 3.1.4 of Panel Standardization Working Group's Industry Standard Panels for Monitors—15.0-inch (ISP 15-inch) Mounting and Top Level Interface Requirements (Version 1.1), Mar. 12, 2003.

### Claim 16 (depends on 14)

The system of claim 14, wherein the fields allocated for color data comprise at least four bits.

### Claim 17 (depends on 14)

The system of claim 14, wherein the interface complies at least with Low Voltage Differential Signaling (LVDS).

### Claim 18 (depends on 14)

The system of claim 14, wherein the command comprises one of a command to store a frame in a frame buffer, a command to enter self refresh mode, and a command to exit self refresh mode.

### Claim 19 (depends on 14)

The system of claim 14, wherein the command comprises one of a command to perform a partial screen update and a command to end performing a partial screen update.

### Claim 20 (depends on 14)

The system of claim 14, further comprising one of a keyboard and touch screen interface.