Signal processing apparatus and image display apparatus including same

Patent metadata

Field	Value
Publication number	US-2022383551-A1
Application number	US-201917773805-A
Country	US
Kind code	A1
Filing date	Nov 1, 2019
Priority date	Nov 1, 2019
Publication date	Dec 1, 2022
Grant date	—

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

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.

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 High Dynamic Range (HDR) image data.

3 . The signal processing device of claim 1 , 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 HDR image data.

4 . 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.

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

6 . The signal processing device of claim 4 , 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.

7 . The signal processing device of claim 1 , wherein the image data received from the external electronic device includes image data compressed based on the HDMI 2.1 standard.

8 . 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.

9 . 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.

10 . 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.

11 . 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.

12 . 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.

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

14 . The signal processing device of claim 12 , wherein the memory stores the image data compressed in the encoder based on the image data received from the external electronic device being dynamic High Dynamic Range (HDR) image data.

15 . The signal processing device of claim 13 , 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.

16 . 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.

17 . The signal processing device of claim 16 , wherein the memory stores the received image data based on the image data received from the external electronic device being dynamic High Dynamic Range (HDR) image data.

18 . The signal processing device of claim 16 , 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.

19 . 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.

20 . The image display apparatus of claim 19 , wherein the memory stores the image data compressed in the encoder based on the image data received from the external electronic device being dynamic High Dynamic Range (HDR) image data.

Assignees

• Lg Electronics Inc

Inventors

• Rhee Kwangyeon
• Kim Jongchan
• Choi Dongkyu

Classifications

• H04N21/4402 Primary

  involving reformatting operations of video signals for household redistribution, storage or real-time display {(details of conversion of video standards at pixel level H04N7/01; video transcoding H04N19/40; adapting incoming signals to the display format of the display terminal G09G5/005; media handling at the source in data packet switching networks H04L65/764)} · CPC title

• H04N21/433

  Content storage operation, e.g. storage operation in response to a pause request, caching operations · CPC title

• H04N21/440263

  by altering the spatial resolution, e.g. for displaying on a connected PDA · CPC title

• H04N21/435

  Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream · CPC title

• H04N21/42692 Primary

  for reading from or writing on a volatile storage medium, e.g. Random Access Memory [RAM] · CPC title