Video device finishing encoding within the desired length of time

• US 9,357,222 B2
• Filed: 06/08/2015
• Issued: 05/31/2016
• Est. Priority Date: 03/18/2008
• Status: Active Grant

• Current Assignee: Texas Instruments, Inc.
• Original Assignee: Texas Instruments, Inc.
• Inventors: Meehan, Joseph Patrick
• Primary Examiner(s): KAMARA, MOHAMED A
• Application Number:
  US14/733,579
• Publication Number:
  US 20150271511A1
• Time in Patent Office: 358 Days
• Field of Search: 375/240.1, 375/240.2, 375/240.3, 375/240.12, 375/240.13, 375/240.16, 375/240.24, 375/240.25, 382/107, 382232-253, 382/276
• US Class Current: 1/1
• CPC Class Codes: G06T 1/60 Memory management
• CPC Class Codes: H04N 19/102 characterised by the element, parameter or selection affected or controlled by the adaptive coding
• CPC Class Codes: H04N 19/105 Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
• CPC Class Codes: H04N 19/124 Quantisation
• CPC Class Codes: H04N 19/156 Availability of hardware or computational resources, e.g. encoding based on power-saving criteria
• CPC Class Codes: H04N 19/426 using memory downsizing methods
• CPC Class Codes: H04N 19/44 Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
• CPC Class Codes: H04N 19/51 Motion estimation or motion compensation
• CPC Class Codes: H04N 19/523 with sub-pixel accuracy
• CPC Class Codes: H04N 19/57 Motion estimation characterised by a search window with variable size or shape
• CPC Class Codes: H04N 19/61 in combination with predictive coding

Abstract

A system comprising a processor and a compression module coupled to the processor. The compression module is adapted to perform motion estimation on video data using an algorithm, the motion estimation performed at a rate. If the processor determines a difference between the rate and a target rate, the processor adjusts a precision level of the algorithm such that the difference is decreased.

Claims

1. A video encoding device comprising:

(A) processor circuitry having a video input receiving frames of video data, a video output, a monitor input, and a control output controlling precision levels of a scalable motion estimation encoding algorithm;

(B) memory circuitry having an input coupled to the video output and having an output, the memory circuitry storing the frames of video data;

(C) compression circuitry having a video input coupled to the output of the memory circuitry, a video output coupled to the monitor input, and a control input coupled to the control output, the compression circuitry performing motion estimation with a precision level and finishing encoding on each frame of video data in accordance with the scalable motion estimation encoding algorithm and in response to a precision level output on the control output;

(D) for a certain frame of video data, the compression circuitry performing the motion estimation encoding algorithm with a precision level and finishing encoding on that certain frame of video data in other than a desired length of time; and

(E) for a frame of video data subsequent to the certain frame of video data, the processor circuitry monitoring the video output and changing the precision level of the motion estimation encoding algorithm to maintain the performing motion estimation and finishing encoding within the desired length of time.

2. The device of claim 1 including:

preprocessor processor circuitry having the video input, a central processor interface, and a video bus interface;

a video bus coupled to the video bus interface;

memory circuitry coupled to the video bus; and

in which the compression circuitry video input is coupled to the video bus.

3. The device of claim 1 including a mobile communication device containing the processor circuitry, the memory circuitry, and the compression circuitry.

4. The device of claim 1 in which the compression circuitry includes an output buffer having a monitor output coupled to the monitor input.