BIT RATE MODIFICATION BASED ON AN AMBIENT INTERFERENCE LEVEL

• US 20150379997A1
• Filed: 06/25/2014
• Published: 12/31/2015
• 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
• Granted Patent: US 9,596,471 B2
• Time in Patent Office: 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, the code comprising;

code that determines an ambient interference level of ambient interference; and

code that modifies a bit rate of a lossy compressed data stream in response to the ambient interference level.

2. The apparatus of claim 1, wherein the ambient interference is audio interference and the code further modifies the bit rate in response to the audio ambient interference level exceeding an audio threshold.

3. The apparatus of claim 1, wherein the ambient interference is ambient light and the bit rate is reduced in response to an ambient light ambient interference level exceeding a light threshold.

4. The apparatus of claim 1, wherein the ambient interference is motion of a video image and the bit rate is reduced in response to a motion ambient interference level exceeding a motion threshold.

6. The method of claim 1, wherein the ambient interference is audio interference.

7. The method of claim 6, wherein the bit rate is modified in response to an audio ambient interference level exceeding an audio threshold.

8. The method of claim 6, wherein the bit rate is 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.

9. The method of claim 1, wherein the ambient interference is ambient light and the bit rate is reduced in response to an ambient light ambient interference level exceeding a light threshold.

10. The method of claim 1, wherein the ambient interference is motion of a video image and the bit rate is reduced in response to a motion ambient interference level exceeding a motion threshold.

11. The method of claim 1, wherein the ambient interference level is a function of an intensity of the ambient interference and a variability of the ambient interference.

12. The method of claim 1, wherein the ambient interference level is determined at a data stream destination.

13. The method of claim 1, wherein the ambient interference level is determined at a data stream source.

14. The method of claim 1, wherein the bit rate is modified from the data stream destination.

15. The method of claim 1, wherein the bit rate is modified from the data stream source.

16. The method of claim 1, wherein the bit rate is modified according to a bit rate modification table.

5. A method comprising:

determining, by use of a processor, an ambient interference level of ambient interference; and

modifying a bit rate of a lossy compressed data stream in response to the ambient interference level.

17. A program product comprising a 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; and

modifying a bit rate of a lossy compressed data stream in response to the ambient interference level.

18. The program product of claim 17, wherein the ambient interference is audio interference and the code further modifies the bit rate in response to the audio ambient interference level exceeding an audio threshold.

19. The program product of claim 17, wherein the ambient interference is ambient light and the bit rate is reduced in response to an ambient light ambient interference level exceeding a light threshold.

20. The program product of claim 17, wherein the ambient interference is motion of a video image and the bit rate is reduced in response to a motion ambient interference level exceeding a motion threshold.