Method, apparatus and system for exchanging video data in parallel

• US 9,167,272 B2
• Filed: 04/25/2012
• Issued: 10/20/2015
• Est. Priority Date: 04/25/2012
• Status: Active Grant

• Current Assignee: Omnivision Technologies Incorporated (Will Semiconductor Co., Ltd. Shanghai)
• Original Assignee: Omnivision Technologies Incorporated (Will Semiconductor Co., Ltd. Shanghai)
• Inventors: Lu, Manuel, Du, Xuanming
• Primary Examiner(s): RAHAMAN, MOHAMMED S
• Application Number:
  US13/456,152
• Publication Number:
  US 20130286285A1
• Time in Patent Office: 1,273 Days
• Field of Search: 375/240.01
• US Class Current: 1/1
• CPC Class Codes: H04N 19/436 using parallelised computational arrangements
• CPC Class Codes: H04N 19/88 involving rearrangement of data among different coding units, e.g. shuffling, interleaving, scrambling or permutation of pixel data or permutation of transform coefficient data among different blocks
• CPC Class Codes: H04N 21/4347 Demultiplexing of several video streams

Abstract

Techniques and mechanisms for exchanging sets of video data each via multiple channels. In an embodiment, a first data set is distributed across the multiple channels according to a first mapping of the multiple channels each to a different respective one of multiple data types, where each of the multiple data types corresponds to a different respective dimension of a color space. In another embodiment, a second data set is distributed across the multiple channels according to a second mapping of the multiple channels each to a different respective one of the multiple data types, where the second mapping is different from the first mapping.

Claims

1. A method comprising:

receiving video data;

determining, based on the received video data, multiple data sets each for a different respective video frame, the multiple data sets including a first data set and a second data set; and

for each of the multiple data sets, performing with a parallelization circuit a respective distribution of the data set across multiple channels, wherein the distribution of the first data set during a first time period is according to a first mapping of the multiple channels each to a different respective one and only one of multiple data types, wherein the multiple data types each correspond to a different respective one of multiple dimensions of a first color space, wherein the distribution of the second data set during a second time period after the first time period is according to a second mapping of the multiple channels each to a different respective one and only one of the multiple data types, wherein the multiple dimensions of the first color space include a luma dimension, a first chroma dimension and a second chroma dimension, or the multiple dimensions of the first color space include a red dimension, a green dimension and a blue dimension, wherein a total number of the multiple channels is equal to a total number of the multiple dimensions of the first color space, and

wherein the second mapping is different from the first mapping, wherein, for each of the multiple channels, the data type allocated to that channel according to the first mapping is different than the data type allocated to that channel according to the second mapping.

2. The method of claim 1, wherein each of the multiple channels is coupled to exchange a respective portion of the video data from the parallelization logic to a different respective encoder of multiple encoders.

3. The method of claim 2, further comprising:

at each of the multiple encoders;

receiving a respective portion of the first data set; and

performing a respective frequency domain compression operation on the respective portion of the first data set.

4. The method of claim 1, wherein the received video data includes first video data, and wherein determining the multiple sets of data includes converting the first video data from identifying a location in a second color space to identifying a location in the first color space.

5. The method of claim 1, wherein the first data set includes data for all pixels in a first video frame.

6. The method of claim 1, wherein the respective distributions of the multiple data sets are performed according to a sequence of mappings including the first mapping and the second mapping.

7. The method of claim 6, further comprising:

receiving synchronization information indicating a state of data communication or data processing associated with the video data; and

based on the synchronization information, identifying an initial mapping of the sequence of mappings for the performing the respective distributions of the multiple data sets.

8. An apparatus comprising:

a parallelization circuit including;

first logic to receive video data and to determine, based on the received video data, multiple data sets each for a different respective video frame, the multiple data sets including a first data set and a second data set;

distribution logic coupled to the first logic; and

mapping logic coupled to the distribution logic and to selectively configure the distribution logic to perform, for each of the multiple data sets, a respective distribution of the data set across multiple channels, wherein the distribution of the first data set during a first time period is according to a first mapping of the multiple channels each to a different respective one and only one of multiple data types, wherein the multiple data types each correspond to a different respective one of multiple dimensions of a first color space, wherein the distribution of the second data set during a second time period after the first time period is according to a second mapping of the multiple channels each to a different respective one and only one of the multiple data types,

wherein the multiple dimensions of the first color space include a luma dimension, a first chroma dimension and a second chroma dimension, or the multiple dimensions of the first color space include a red dimension, a green dimension and a blue dimension,

wherein a total number of the multiple channels is equal to a total number of the multiple dimensions of the first color space, and

wherein the second mapping is different from the first mapping, wherein, for each of the multiple channels, the data type allocated to that channel according to the first mapping is different than the data type allocated to that channel according to the second mapping.

9. The apparatus of claim 8, wherein the received video data includes first video data, and wherein the first logic to determine the multiple sets of data includes the first logic to convert the first video data from identifying a location in a second color space to identifying a location in the first color space.

10. The apparatus of claim 8, wherein the first data set includes data for all pixels in a first video frame.

11. The apparatus of claim 8, wherein the distribution logic to perform the respective distributions of the multiple data sets according to a sequence of mappings including the first mapping and the second mapping.

12. The apparatus of claim 11, wherein:

the mapping logic further to receive synchronization information indicating a state of data communication or data processing associated with the video data; and

based on the synchronization information, the mapping logic further to identify an initial mapping of the sequence of mappings for the distribution logic to perform the respective distributions of the multiple data sets.

13. A system comprising:

a parallelization circuit including;

first logic to receive video data and to determine, based on the received video data, multiple data sets each for a different respective video frame, the multiple data sets including a first data set and a second data set;

distribution logic coupled to the first logic; and

mapping logic coupled to the distribution logic and to selectively configure the distribution logic to perform, for each of the multiple data sets, a respective distribution of the data set across multiple channels, wherein the distribution of the first data set during a first time period is according to a first mapping of the multiple channels each to a different respective one and only one of multiple data types, wherein the multiple data types each correspond to a different respective one of multiple dimensions of a first color space, wherein the distribution of the second data set during a second time period after the first time period is according to a second mapping of the multiple channels each to a different respective one and only one of the multiple data types,

wherein the multiple dimensions of the first color space include a luma dimension, a first chroma dimension and a second chroma dimension, or the multiple dimensions of the first color space include a red dimension, a green dimension and a blue dimension,

wherein a total number of the multiple channels is equal to a total number of the multiple dimensions of the first color space, and

wherein the second mapping is different from the first mapping, wherein, for each of the multiple channels, the data type allocated to that channel according to the first mapping is different than the data type allocated to that channel according to the second mapping; and

a first encoder, a second encoder and a third encoder each coupled to the parallelization circuit via a different respective one of the multiple channels.

14. The system of claim 13, wherein each of the first encoder, the second encoder and the third encoder is to receive a respective portion of the first data set and to perform a respective frequency domain compression operation on the respective portion of the first data set.

15. The system of claim 13, wherein the received video data includes first video data, and wherein the first logic to determine the multiple sets of data includes the first logic to convert the first video data from identifying a location in a second color space to identifying a location in the first color space.

16. The system of claim 13, wherein the distribution logic to perform the respective distributions of the multiple data sets according to a sequence of mappings including the first mapping and the second mapping.

17. The system of claim 16, wherein:

the mapping logic further to receive synchronization information indicating a state of data communication or data processing associated with the video data; and

based on the synchronization information, the mapping logic further to identify an initial mapping of the sequence of mappings for the distribution logic to perform the respective distributions of the multiple data sets.