Transmission device, transmission method, reception device, and reception method

• US 10,708,671 B2
• Filed: 10/17/2016
• Issued: 07/07/2020
• Est. Priority Date: 10/22/2015
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Tsukagoshi, Ikuo
• Primary Examiner(s): Marandi, James R
• Application Number:
  US15/761,278
• Publication Number:
  US 20180262819A1
• Time in Patent Office: 1,359 Days
• Field of Search: None
• CPC Class Codes: G06T 5/90 Dynamic range modification of images or parts thereof
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: H04N 21/236 Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream multiplexing of data packets for data networks, e.g. RTP/UDP H04L65/00
• CPC Class Codes: H04N 21/23614 Multiplexing of additional data and video streams arrangements for simultaneous broadcast of plural pieces of information H04H20/28
• CPC Class Codes: H04N 21/2362 Generation or processing of Service Information [SI]
• CPC Class Codes: H04N 21/2365 Multiplexing of several video streams
• CPC Class Codes: H04N 21/4318 by altering the content in the rendering process, e.g. blanking, blurring or masking an image region image enhancement or restoration in general G06T5/00
• CPC Class Codes: H04N 21/4347 Demultiplexing of several video streams
• CPC Class Codes: H04N 21/4348 Demultiplexing of additional data and video streams
• CPC Class Codes: H04N 21/435 Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
• CPC Class Codes: H04N 21/84 Generation or processing of descriptive data, e.g. content descriptors systems specially adapted for using meta-information in broadcast systems H04H60/73

Abstract

There is provided a transmission device including: a transmission unit that transmits a container in a predetermined format including a first component stream that has, as component data, transmission video data obtained by switching between a plurality of types of transmission video data, and a predetermined number of second component streams that have pieces of other component data; and an information insertion unit that inserts dynamic range information of the component data that each of the component streams has into the component streams.

Claims

1. A transmission device comprising:

circuitry configured to;

generate a video component stream that has video component data, the video component data being obtained by switching between a plurality of types of video data;

generate a non-video component stream that includes non-video component data;

insert first control information specifying a first dynamic range of the video component data into the video component stream;

insert second control information specifying a second dynamic range of the non-video component data into the non-video component stream; and

generate a container in a predetermined format that includes the video component stream with the first control information inserted therein, and the non-video component stream with the second control information inserted therein; and

transmit the container.

2. The transmission device according to claim 1,

wherein the container in the predetermined format is a MPEG-2 transport stream (TS) or a transport stream of MPEG Media Transport (MMT).

3. The transmission device according to claim 1,

wherein the circuitry is further configured to insert first color gamut information of the video component data into the video component stream and insert second color gamut information of the non-video component data into the non-video component stream.

4. The transmission device according to claim 1,

wherein the circuitry is further configured to insert identification information in the video component stream, the identification information being included at a position in the video component stream that occurs at a predetermined amount of time prior to a switching event, and the identification information identifying a type of video data that is included in the video component stream after the switching event, the switching event corresponding to switching one type of video data to another.

5. The transmission device according to claim 1,

wherein the non-video component stream includes a data broadcasting stream or a subtitle stream.

6. A transmission method comprising:

generating a video component stream that has video component data, the video component data being obtained by switching between a plurality of types of video data;

generating a non-video component stream that includes non-video component data;

inserting, by circuitry of a transmission device, first control information specifying a first dynamic range of the video component data into the video component stream;

inserting, by the circuitry, second control information specifying a second dynamic range of the non-video component data into the non-video component stream;

generating a container in a predetermined format that includes the video component stream with the first control information inserted therein, and the non-video component stream with the second control information inserted therein; and

transmitting, by a transmitter of the transmission device, the container.

7. A reception device comprising:

a receiver configured to receive a container in a predetermined format that includes

a video component stream that includes video component data and first control information, the video component data being obtained by switching between a plurality of types of video data, and the first control information specifying a first dynamic range of the video component data, and

a non-video component stream that includes non-video component data and second control information, the second control information specifying a second dynamic range of the non-video component data; and

circuitry configured to;

decode the video component stream and the non-video component stream to obtain the video component data, the non-video component data, the first control information, and the second control information;

perform a first luminance mapping process on the video component data based on the first dynamic range of the video component data and a second luminance mapping process on the non-video component data based on the second dynamic range of the non-video component data to match display performance associated with the video component data and the non-video component data, and

output processed data including results of the first luminance mapping process and the second luminance mapping process.

8. The reception device according to claim 7, further comprising:

a display configured to display an image associated with the processed data.

9. The reception device according to claim 7, wherein

first color gamut information of the video component data is included in the video component stream and second color gamut information of the non-video component data is included in the non-video component stream, and

the circuitry is configured perform a first color gamut conversion process on the video component data based on the first color gamut information and a second color gamut conversion process on the non-video component data based on the second color gamut information to match the display performance, the processed data including results of the first color gamut conversion process and the second color gamut conversion process.

10. A reception method comprising:

receiving, by a receiver of a reception device, a container in a predetermined format that includes

a video component stream that includes video component data and first control information, the video component data being obtained by switching between a plurality of types of video data, and the first control information specifying a first dynamic range of the video component data, and

a non-video component stream that includes non-video component data and second control information, the second control information specifying a second dynamic range of the non-video component data;

decoding the video component stream and the non-video component stream to obtain the video component data, the non-video component data, the first control information, and the second control information;

performing a first luminance mapping process on the video component data based on the first dynamic range of the video component data and a second luminance mapping process on the non-video component data based on the second dynamic range of the non-video component data to match display performance associated with the video component data and the non-video component data; and

outputting processed data including results of the first luminance mapping process and the second luminance mapping process.