Bit rate modification based on an ambient interference level

• US 9,596,471 B2
• Filed: 06/25/2014
• Issued: 03/14/2017
• Est. Priority Date: 06/25/2014
• Status: Active Grant

• Current Assignee: Lenovo PC International Limited (Lenovo Group Ltd.)
• Original Assignee: Lenovo Singapore Pte Limited (Lenovo Group Ltd.)
• Inventors: Peterson, Nathan J., Rose, Amy Leigh, Zaitsev, Grigori
• Primary Examiner(s): Li, Tracy Y
• Application Number:
  US14/315,135
• Publication Number:
  US 20150379997A1
• Time in Patent Office: 993 Days
• US Class Current: 1/1
• CPC Class Codes: G10L 21/0216 characterised by the method used for estimating noise
• CPC Class Codes: G10L 25/48 specially adapted for particular use
• CPC Class Codes: H04N 19/115 Selection of the code volume for a coding unit prior to coding
• CPC Class Codes: H04N 19/136 Incoming video signal characteristics or properties
• CPC Class Codes: H04N 19/139 Analysis of motion vectors, e.g. their magnitude, direction, variance or reliability
• CPC Class Codes: H04N 19/154 Measured or subjectively estimated visual quality after decoding, e.g. measurement of distortion use of rate-distortion criteria H04N19/147
• CPC Class Codes: H04N 19/172 the region being a picture, frame or field

Abstract

For bit rate adjustment based on ambient interference levels, an apparatus determines an ambient interference level of ambient interference. In addition, the apparatus modifies a bit rate of a lossy compressed data stream in response to the ambient interference level.

Claims

1. An apparatus comprising:

a communication device comprising a processor and a memory that stores code executable by the processor to;

determine an ambient interference level of ambient interference at one or more of a data stream source and a data stream destination;

determine a bit rate modification by using the ambient interference level as an index to select the bit rate modification from a bit rate modification table; and

modify a bit rate of a lossy compressed data stream communicated from the data stream source to the data stream destination with the bit rate modification.

2. The apparatus of claim 1, wherein the ambient interference is audio interference.

3. The apparatus of claim 1, wherein the ambient interference is ambient light.

4. The apparatus of claim 1, wherein the ambient interference is motion of a video image.

5. A method comprising:

determining, by use of a processor, an ambient interference level of ambient interference at one or more of a data stream source and a data stream destination;

determining a bit rate modification by using the ambient interference level as an index to select the bit rate modification from a bit rate modification table; and

modifying a bit rate of a lossy compressed data stream communicated from the data stream source to the data stream destination with the bit rate modification.

6. The method of claim 5, wherein the ambient interference is audio interference.

7. The method of claim 6, wherein the bit rate is further modified by masking a noise frequency band in the data stream in response to an audio ambient interference level of the noise frequency band exceeding a band threshold.

8. The method of claim 5, wherein the ambient interference is ambient light.

9. The method of claim 5, wherein the ambient interference is motion of a video image.

10. The method of claim 5, wherein the ambient interference level is a function of an intensity of the ambient interference and a variability of the ambient interference.

11. The method of claim 5, wherein the ambient interference level is determined at a data stream destination.

12. The method of claim 5, wherein the ambient interference level is determined at a data stream source.

13. The method of claim 5, wherein the bit rate is modified from the data stream destination.

14. The method of claim 5, wherein the bit rate is modified from the data stream source.

15. A program product comprising a non-transitory computer readable storage medium that stores code executable by a processor, the executable code comprising code to perform:

determining an ambient interference level of ambient interference at one or more of a data stream source and a data stream destination;

determining a bit rate modification by using the ambient interference level as an index to select the bit rate modification from a bit rate modification table; and

modifying a bit rate of a lossy compressed data stream communicated from the data stream source to the data stream destination with the bit rate modification.

16. The program product of claim 15, wherein the ambient interference is audio interference.

17. The program product of claim 15, wherein the ambient interference is ambient light.

18. The program product of claim 15, wherein the ambient interference is motion of a video image.