VIDEO REPRODUCING APPARATUS AND VIDEO REPRODUCING METHOD

Abstract

A video reproducing apparatus includes, a video decoding unit that decodes the input video data, determines, on the basis of image management information included in the video data, whether or not the video data is video data to which a film grain is to be added, and adds, when the video data is video data to which the film grain is to be added, the film grain to the video data to be decoded, a noise reduction unit that reduces noises of the decoded video data, and a noise reduction control unit that sets off the noise reduction function of the noise reduction unit when it is determined that the video data is video data to which the film grain is to be added.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention, and together with the general description given above and the detailed description of the embodiments given below, serve to explain the principles of the invention.

FIGS. 1A to 1D are diagrams showing examples of the appearance of a video reproducing apparatus according to embodiments of the present invention;

FIG. 2 is a diagram showing an example of the system structure of a video reproducing apparatus according to the embodiments of the present invention;

FIG. 3 is a flowchart showing of an example of a video reproducing method according to an embodiment of the present invention;

FIG. 4 is a diagram schematically illustrating content of image management information of video data to which the FGT is applied;

FIG. 5 is a flowchart of the details showing an example of FGT determination processing with a video reproducing method according to the present invention;

FIG. 6 is a flowchart of the details showing an example of noise reduction control processing with the video reproducing method according to the embodiment of the present invention; and

FIG. 7 is a diagram schematically showing a selecting method of a DNR mode by a user.

Claims

1. A video reproducing apparatus comprising: a video decoding unit that decodes video data, determines, on the basis of image management information included in the video data, whether or not the video data is video data to which a film grain is to be added, and adds, when the video data is video data to which the film grain is to be added, the film grain to the video data to be decoded;a noise reduction unit that reduces noises of the decoded video data; anda noise reduction control unit that sets off the noise reduction function of the noise reduction unit when it is determined that the video data is video data to which the film grain is to be added.

2. The video reproducing apparatus according to claim 1, further comprising: a noise reduction setting unit that sets ON/OFF operation of the noise reduction function in accordance with the user selection, andwherein the noise reduction control unit sets the ON-operation of the noise reduction function, when the user sets the ON-operation of the noise reduction function and even if it is determined that the video data is video data to which the film grain is to be added.

3. The video reproducing apparatus according to claim 1, further comprising: a noise reduction setting unit that sets ON/OFF operation of the noise reduction function in accordance with the user selection, andwherein the video decoding unit does not add the film grain to the video data to be decoded, when the user sets the ON-operation of the noise reduction function and even if it is determined that the video data is video data to which the film grain is to be added.

4. The video reproducing apparatus according to claim 1, wherein the video decoding unit determines, every frame of the video data, whether or not the video data is video data to which the film grain is to be added.

5. The video reproducing apparatus according to claim 1, wherein the video data is video data based on ITU-T H. 264 standard, the video decoding unit determines, when the video data includes an SEI message and a payload type included in the SEI message indicates “19”, that the video data is video data to which the film grain is to be added.

6. The video reproducing apparatus according to claim 1, wherein the function of the video decoding unit is realized by a first micro processor, and the function of the noise reduction control unit is realized by a second micro processor.

7. The video reproducing apparatus according to claim 1, further comprising: a video display unit that displays a video image.

8. A video reproducing method comprising the steps of: (a) decoding video data, determining, on the basis of image management information included in the video data, whether or not the video data is video data to which a film grain is to be added, and adding, when the video data is video data to which the film grain is to be added, the film grain to the video data to be decoded;(b) reducing noises of the decoded video data; and(c) setting off the noise reduction function when it is determined that the video data is video data to which the film grain is to be added.

9. The video reproducing method according to claim 8, further comprising the step of: (d) setting ON/OFF operation of the noise reduction function in accordance with the user selection, andwherein, in step (c), the ON-operation of the noise reduction function is set, when the user sets the ON-operation of the noise reduction function and even if it is determined that the video data is video data to which the film grain is to be added.

10. The video reproducing method according to claim 8, further comprising the step of: (d) setting ON/OFF operation of the noise reduction function in accordance with the user selection, andwherein, in step (a), the film grain is not added to the video data to be decoded, when the user sets the ON-operation of the noise reduction function and even if it is determined that the video data is video data to which the film grain is to be added.

11. The video reproducing method according to claim 8, wherein, in step (a), every frame of the video data is determined, whether or not the video data is video data to which the film grain is to be added.

12. The video reproducing method according to claim 8, wherein the video data is video data based on ITU-T H. 264 standard, and in step (a), when the video data includes an SEI message and a payload type included in the SEI message indicates “19”, it is determined that the video data is video data to which the film grain is to be added.

13. The video reproducing method according to claim 8, further comprising the step of: displaying a video image.