Device and method for driving display in response to image data

Patent metadata

Field	Value
Publication number	US-2020184879-A1
Application number	US-202016794802-A
Country	US
Kind code	A1
Filing date	Feb 19, 2020
Priority date	Jan 31, 2017
Publication date	Jun 11, 2020
Grant date	—

Abstract

A display driver includes: a receiver configured to receive image data of each line of a display panel from an external device; a line latch circuit having a line latch configured to latch the image data of each line received by the receiver in response to a strobe signal; a driving circuit section which drives the display panel in response to the image data latched by the line latch; and a timing controller configured to generate the strobe signal. The receiver is configured to detect occurrence of transmission error in data transmission about each line. The timing controller is configured to generate the strobe signal in response to a detection result of the occurrence of transmission error.

First claim

What is claimed is:

1 . A display driver comprising:
a receiver configured to:
receive first image data for a first line and second image data for a second line of a display panel; and
detect occurrence of a transmission error within the second image data; and
a driving circuit section configured to drive, in response to the detection of the occurrence of the transmission error within the second image data, the second line with the first image data, wherein the first line is driven prior to the second line.

2 . The display driver of claim 1 , wherein the second line is driven sequentially after the first line.

3 . The display driver of claim 1 further comprising:
a line latch circuit configured to output the first image data of the first line to the driving circuit section in response to the detection of the occurrence of the transmission error within the second image data.

4 . The display driver of claim 3 further comprising:
a storage circuit configured to transmit the first image data of the first line to the line latch circuit in response to the detection of the occurrence of the transmission error within the second image data.

5 . The display driver of claim 4 further comprising:
a line memory circuit configured to transmit the first image data of the first line to the storage circuit in response to the detection of the occurrence of the transmission error in the second image data.

6 . The display driver of claim 4 , wherein in a first operation mode, the receiver is further configured to transmit the first image data of the first line to the line latch circuit bypassing the storage circuit, and in a second operation mode, the receiver is further configured to transmit the first image data of the first line to a line memory circuit.

7 . The display driver of claim 4 further comprising:
a timing controller configured to:
control the line latch circuit to output the first image data of the first line to the driving circuit section in response to the detection of the occurrence of the transmission error; and
control the storage circuit to transmit the first image data of the first line to the line latch circuit in response to the detection of the occurrence of the transmission error.

8 . The display driver of claim 1 , wherein in a first operation mode, the display driver is configured operate one or more detection electrodes for capacitive sensing during a vertical sync period, and in a second operation mode, the display driver is configured to operate the one or more detection electrodes for capacitive sensing during horizontal sync periods.

9 . The display driver of claim 1 , wherein the receiver is further configured to:
receive third image data for a third line of the display panel; and detect occurrence of a transmission error within the third image data, and wherein the driving circuit section is further configured to drive, in response to the detection of the occurrence of the transmission error within the third image data, the third line with the first image data.

10 . A method for operating a display apparatus, the method comprising:
receiving, by a receiver, first image data for a first line and second image data for a second line of a display panel; detecting, by the receiver, occurrence of a transmission error within the second image data; and driving, by a driving circuit section and in response to the detection of the occurrence of the transmission error, the second line with the first image data, wherein the first line is driven prior to the second line.

11 . The method of claim 10 further comprising:
outputting, by a line latch circuit, the first image data of the first line to the driving circuit section in response to the detection of the occurrence of the transmission error.

12 . The method of claim 11 further comprising:
transmitting, by a storage circuit, the first image data of the first line to the latch line circuit in response to the detection of the occurrence of the transmission error.

13 . The method of claim 12 further comprising:
transmitting, by a line memory circuit, the first image data of the first line to the storage circuit in response to the detection of the occurrence of the transmission error.

14 . The method of claim 12 further comprising:
in a first operation mode, transmitting, by the receiver, the first image data of the first line to the line latch circuit bypassing the storage circuit; and
in a second operation mode, transmitting, by the receiver, the first image data of the first line to a line memory circuit.

15 . The method of claim 10 further comprising:
in a first operation mode, operating one or more detection electrodes for capacitive sensing during a vertical sync period; and
in a second operation mode, operating the one or more detection electrodes for capacitive sensing during horizontal sync periods.

16 . A display apparatus comprising:
a display panel comprising a first line and a second line; and a display driver comprising:
a receiver configured to:
receive first image data for the first line and second image data for the second line; and
detect occurrence of a transmission error within the second image data; and

a driving circuit section configured to drive, in response to the detection of the occurrence of the transmission error, the second line with the first image data, wherein the first line is driven prior to the second line.

17 . The display apparatus of claim 16 , wherein the display driver further comprises:
a line latch circuit configured to output the first image data of the first line to the driving circuit section in response to the detection of the occurrence of the transmission error.

18 . The display apparatus of claim 17 , wherein the display driver further comprises:
a storage circuit configured to transmit the first image data of the first line to the line latch circuit in response to the detection of the occurrence of the transmission error.

19 . The display apparatus of claim 18 , wherein the display driver further comprises:
a line memory circuit configured to:
transmit the first image data of the first line to the storage circuit in response to the detection of the occurrence of the transmission error.

20 . The display apparatus of claim 16 further comprising one or more detection electrodes, wherein, in a first operation mode, the display driver is configured operate the one or more detection electrodes for capacitive sensing during a vertical sync period, and in a second operation mode, the display driver is configured to operate the one or more detection electrodes for capacitive sensing during horizontal sync periods.

Assignees

• Synaptics Inc

Inventors

• Yamazumi Kenji
• Hatayama Hirokazu
• Shamarao Prashant
• Kitamura Kota

Classifications

• G06F3/04184

  Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally · CPC title

• G09G5/18

  Timing circuits for raster scan displays (specially adapted for television H04N {; synchronisation between the display unit and other display units, videodisc player G09G5/12}) · CPC title

• G09G2370/10

  Use of a protocol of communication by packets in interfaces along the display data pipeline · CPC title

• G09G3/2092

  Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto (suitable for both CRT and flat panel G09G5/003; specific for a CRT G09G1/165) · CPC title

• G06F3/0416

  Control or interface arrangements specially adapted for digitisers · CPC title