Signal processing apparatus and image display apparatus including same

Patent metadata

Field	Value
Publication number	US-11961262-B2
Application number	US-201917773805-A
Country	US
Kind code	B2
Filing date	Nov 1, 2019
Priority date	Nov 1, 2019
Publication date	Apr 16, 2024
Grant date	Apr 16, 2024

Abstract

Disclosed are a signal processing device and an image display apparatus including the same. The signal processing device and the image display apparatus including the same according to an embodiment of the present disclosure includes: a first decoder to reconstruct image data received from an external electronic device, an encoder to compress the image data reconstructed in the first decoder, a memory to store the image data compressed in the encoder, and a second decoder to reconstruct the image data stored in the memory. Accordingly, despite of the increases of the amount of the input image data and the bandwidth thereof, the image data may be stored in the memory efficiently.

First claim

What is claimed is:

1. A signal processing device comprising:
a first decoder to reconstruct image data received from an external electronic device;
an encoder to compress the image data reconstructed in the first decoder;
a memory to store the image data compressed in the encoder; and
a second decoder to reconstruct the image data stored in the memory,
wherein the memory does not store the image data compressed in the encoder based on the image data received from the external electronic device being static high dynamic range (HDR) image data.

2. The signal processing device of claim 1 , wherein the memory stores the image data compressed in the encoder based on the image data received from the external electronic device being dynamic HDR image data.

3. The signal processing device of claim 1 , wherein metadata is received during a black period of a first frame, wherein the first decoder reconstructs the image data received from the external electronic device, wherein the encoder compresses the image data reconstructed in the first decoder, and
during a second frame subsequent from the first frame, wherein the memory stores the image data compressed in the encoder.

4. The signal processing device of claim 3 , wherein the memory stores the image data compressed in the encoder based on dynamic HDR mode information being included in the received metadata.

5. The signal processing device of claim 3 , wherein the memory does not store the image data compressed in the encoder based on static HDR mode information being included in the received metadata.

6. The signal processing device of claim 1 , wherein the image data received from the external electronic device includes image data compressed based on the High Definition Multimedia Interface (HDMI) 2.1 standard.

7. The signal processing device of claim 1 , wherein color information and brightness information of the image data received from the external electronic device change in a frame unit.

8. The signal processing device of claim 1 , wherein the encoder changes a compression rate in the image compression based on an amount of data of the image data received from the external electronic device or a receiving bandwidth when receiving the image data.

9. The signal processing device of claim 1 , while the image data is received from the external electronic device, after a first timing, based on second image data being received from a second electronic device,
wherein the encoder increases a compression rate in the image compression after the first timing.

10. The signal processing device of claim 1 , further comprising:
an HDR processor to perform a high dynamic range process for the image data reconstructed in the second decoder; and
an image quality processor to perform an image quality process of the image data processed in the HDR processor.

11. A signal processing device comprising:
an encoder to compress image data received from an external electronic device;
a memory to store the image data compressed in the encoder; and
a decoder to reconstruct the image data stored in the memory,
wherein the memory does not store the image data compressed in the encoder based on the image data received from the external electronic device being static high dynamic range (HDR) image data.

12. The signal processing device of claim 11 , further comprising a second decoder to decode the image data reconstructed in the decoder.

13. The signal processing device of claim 12 , further comprising:
an HDR processor to perform a high dynamic range process for the image data reconstructed in the second decoder; and
an image quality processor to perform an image quality process of the image data processed in the HDR processor.

14. The signal processing device of claim 11 , wherein the memory stores the image data compressed in the encoder based on the image data received from the external electronic device being dynamic HDR image data.

15. A signal processing device comprising:
a memory to store image data received based on the image data received from an external electronic device being compressed data; and
a decoder to reconstruct the image data stored in the memory,
wherein the memory does not store the image data compressed in the encoder based on the image data received from the external electronic device being static high dynamic range (HDR) image data.

16. The signal processing device of claim 15 , wherein the memory stores the received image data based on the image data received from the external electronic device being dynamic HDR image data.

17. The signal processing device of claim 15 , further comprising:
an HDR processor to perform a high dynamic range process for the image data reconstructed in the decoder; and
an image quality processor to perform an image quality process of the image data processed in the HDR processor.

18. An image display apparatus comprising:
a display; and
a signal processing device to control the display,
wherein the signal processing device comprising:
a first decoder to reconstruct image data received from an external electronic device;
an encoder to compress the image data reconstructed in the first decoder;
a memory to store the image data compressed in the encoder; and
a second decoder to reconstruct the image data stored in the memory,
wherein the memory does not store the image data compressed in the encoder based on the image data received from the external electronic device being static high dynamic range (HDR) image data.

19. The image display apparatus of claim 18 , wherein the memory stores the image data compressed in the encoder based on the image data received from the external electronic device being dynamic HDR image data.

Assignees

• Lg Electronics Inc

Inventors

• Rhee Kwangyeon
• Kim Jongchan
• Choi Dongkyu

Classifications

• G06T9/00 Primary

  Image coding (bandwidth or redundancy reduction for static pictures H04N1/41; coding or decoding of static colour picture signals H04N1/64; methods or arrangements for coding, decoding, compressing or decompressing digital video signals H04N19/00) · CPC title

• G06T1/0007

  Image acquisition · CPC title

• G06T5/009

  Physics · mapped topic

• G09G5/10

  Intensity circuits · CPC title

• G09G2310/08

  Details of timing specific for flat panels, other than clock recovery · CPC title