# US 9,627,008 B2 · Recording medium, reproducing apparatus, and reproducing method

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- Number: US 9,627,008 B2
- Document ID: US9627008B2
- Status: Granted
- Kind: B2
- Application number: 15/148,686
- Filed: 2016-05-06
- Published: 2016-09-01
- Granted: 2017-04-18
- Earliest claimed: 2005-08-10
- Assignees: Mitsubishi Electric Corporation
- Applicants: Mitsubishi Electric Corporation
- Inventors: Masaaki Shimada; Tomoaki Ryu; Kazuhiko Nakane
- Web page: https://patentgrep.com/patent/US9627008B2

## CPC

- G11B 27/3081: {used signal is a video-frame or a video-field (P.I.P)}
- G11B 20/00007: {Time or data compression or expansion (audio compression based on psychoacoustics G10L19/00; data processing for reproducing audio data at different playback speeds G10L21/04; video compression H04N19/00; data compression per se H03M7/30)}
- G11B 20/10: Digital recording or reproducing
- G11B 20/10527: {Audio or video recording; Data buffering arrangements (G11B20/12 - G11B20/18 take precedence)}
- G11B 27/19: by using information detectable on the record carrier
- G11B 27/22: Means responsive to presence or absence of recorded information signals
- G11B 27/3027: {used signal is digitally coded}
- G11B 27/3072: {Coded signal uses a correlation function for detection}
- G11B 27/322: {used signal is digitally coded}
- G11B 27/34: Indicating arrangements {(indicating means incorporated in magazine or cassette G11B23/046 and G11B23/0875; indicating measured values in general G01D)}
- H04N 5/45: Picture in picture {, e.g. displaying simultaneously another television channel in a region of the screen}
- H04N 5/775: between a recording apparatus and a television receiver
- H04N 5/85: on discs or drums
- H04N 9/8042: {involving data reduction}
- H04N 19/44: Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
- H04N 19/577: Motion compensation with bidirectional frame interpolation, i.e. using B-pictures
- H04N 19/58: Motion compensation with long-term prediction, i.e. the reference frame for a current frame not being the temporally closest one (H04N19/23 takes precedence)
- H04N 19/70: characterised by syntax aspects related to video coding, e.g. related to compression standards
- H04N 21/2368: Multiplexing of audio and video streams
- H04N 21/2387: Stream processing in response to a playback request from an end-user, e.g. for trick-play
- H04N 21/42646: {for reading from or writing on a non-volatile solid state storage medium, e.g. DVD, CD-ROM}
- H04N 21/4341: {Demultiplexing of audio and video streams}
- H04N 21/44008: {involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream (arrangements characterised by components specially adapted for monitoring, identification or recognition of video in broadcast systems H04H60/59)}
- G11B 2020/00036: {AC-3, i.e. ATSC digital audio compression standard}
- G11B 2020/00072: {the compressed signal including a video signal}
- G11B 2020/10592: {specifically adapted for recording or reproducing multichannel signals}
- G11B 2020/1062: {Data buffering arrangements, e.g. recording or playback buffers}
- G11B 2220/2541: Blu-ray discs; Blue laser DVR discs
- H04N 5/783: Adaptations for reproducing at a rate different from the recording rate
- H04N 9/8063: {using time division multiplex of the PCM audio and PCM video signals}
- H04N 9/8205: {involving the multiplexing of an additional signal and the colour video signal}
- H04N 9/8227: {the additional signal being at least another television signal}
- G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R)
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

In a recording medium on which is recorded a multiplexed stream including a plurality of first packets (V_main) constituting a first I-picture in a first video stream and a plurality of second packets (V_sub) constituting a second I-picture in a second video stream, information for identifying the first I-picture and information for identifying the second I-picture are recorded on the medium. A recording medium can thereby be obtained that enables the rapid detection, from a small amount of information, of a particular picture included in a stream such as a TS in which multiple content streams are multiplexed.

## Claims

### Claim 1

A video information encoding method for encoding video information for Picture In Picture, comprising:
encoding a video information stream comprising a plurality of video information units each of which includes an intra coded I-picture, a predictive coded P-picture and a bidirectionally-predictive coded B-picture, said video information including a first video information stream representing a primary video sequence, a second video information stream representing secondary video sequence which is presented with said primary video sequence, said first video information stream and said second video information stream including a plurality of packets and being multiplexed into a transport stream; and
creating an access point map which includes access point information and I-picture size information of said first video information stream and said second video information stream,
wherein said access point information indicates the number of each said packets, and said I picture size information represents a range of I-picture size.

### Claim 2

A recording method for recording video information for Picture In Picture on a medium, comprising:
recording a video information stream comprising a plurality of video information units each of which includes an intra coded I-picture, a predictive coded P-picture and a bidirectionally-predictive coded B-picture, said video information including a first video information stream representing a primary video sequence, a second video information stream representing secondary video sequence which is presented with said primary video sequence, said first video information stream and said second video information stream including a plurality of packets and being multiplexed into a transport stream; and
recording an access point map which includes access point information and I-picture size information of said first video information stream and said second video information stream,
wherein said access point information indicates the number of each said packets, and said I picture size information represents a range of I-picture size.

### Claim 3

A non-transitory computer readable medium containing video information for Picture In Picture, comprising:
a video information stream comprising a plurality of video information units each of which includes an intra coded I-picture, a predictive coded P-picture and a bidirectionally-predictive coded B-picture, said video information stream including a first video information stream representing a primary video sequence, a second video information stream representing secondary video sequence which is presented with said primary video sequence, said first video information stream and said second video information stream including a plurality of packets and being multiplexed into a transport stream; and
an access point map including access point information and I-picture size information of said first video information stream and said second video information stream,
wherein said access point information indicates the number of each said packets, and said I picture size information represents a range of I-picture size,
said access point map being a reference for accessing information pertaining to said first video stream and said second video stream in order to identify said representative I-picture of said first video stream and said second video stream in said multiplexed transport stream for playback.

### Claim 4 (depends on 1)

A playback method for reading said encoded video information stream for Picture In Picture of claim 1, comprising:
said video information stream which includes said first video information stream and said second video information stream,
wherein said access point map which includes access point information and I-picture size information of said first video information stream and said second video information stream;
said method comprising steps of;
decoding said I-picture as a reference for said first video information stream and said second video information stream with said access point map; and
playing said first video information stream with said second video information stream.

### Claim 5 (depends on 1)

A playback device for reproducing said encoded video information stream for Picture In Picture of claim 1, comprising:
said video information stream which includes said first video information stream and said second video information stream,
wherein said access point map includes access point information and I-picture size information of said first video information stream and said second video information stream;
said playback device decodes said I-picture as a reference for said first video information stream and said second video information stream with said access point map, and plays said first video information stream with said second video information stream.