# US 11,310,507 B2 · Data output apparatus, data output method, and data generation method

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- Number: US 11,310,507 B2
- Document ID: US11310507B2
- Status: Granted
- Kind: B2
- Application number: 16/825,575
- Filed: 2020-03-20
- Published: 2020-07-09
- Granted: 2022-04-19
- Earliest claimed: 2014-06-27
- Assignees: Panasonic Intellectual Property Management Co., Ltd.
- Applicants: Panasonic Intellectual Property Management Co., Ltd.
- Inventors: Tadamasa Toma; Masayuki Kozuka; Takahiro Nishi; Kengo Terada
- Web page: https://patentgrep.com/patent/US11310507B2

## CPC

- H04N 19/136: Incoming video signal characteristics or properties
- H04N 7/0255: {Display systems therefor}
- H04N 7/08: Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band {, e.g. by time division (H04N7/007 takes precedence)}
- H04N 19/44: Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
- H04N 19/46: Embedding additional information in the video signal during the compression process (H04N19/517, H04N19/68, H04N19/70 take precedence)
- H04N 19/70: characterised by syntax aspects related to video coding, e.g. related to compression standards
- H04N 19/85: using pre-processing or post-processing specially adapted for video compression
- H04N 21/4122: {additional display device, e.g. video projector (digital output for controlling a plurality of local displays G06F3/1423)}
- H04N 21/43635: {HDMI}
- H04N 21/4402: involving reformatting operations of video signals for household redistribution, storage or real-time display {(details of conversion of video standards at pixel level H04N7/01; video transcoding H04N19/40; adapting incoming signals to the display format of the display terminal G09G5/005; media handling at the source in data packet switching networks H04L65/764)}
- H04N 21/4621: {Controlling the complexity of the content stream or additional data, e.g. lowering the resolution or bit-rate of the video stream for a mobile client with a small screen (arrangements for using the results of monitoring on user's side in broadcast systems H04H60/65; flow control in packet networks H04L47/10)}
- H04N 21/4622: {Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet (web site content organization and management for information retrieval from the Internet G06F16/958; transmission by internet of broadcast information H04H60/82; stock exchange data over packet-switching network H04L12/1804; push services including data channel over packet-switching network H04L12/1859)}
- H04N 21/631: {Multimode Transmission, e.g. transmitting basic layers and enhancement layers of the content over different transmission paths or transmitting with different error corrections, different keys or with different transmission protocols}
- 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)}
- H04N 5/57: Control of contrast or brightness
- H04N 21/43615: {Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals (home Audio Video Interoperability [HAVI] data switching networks H04L12/2805)}
- H04N 21/6112: {involving terrestrial transmission, e.g. DVB-T}
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

A data output apparatus includes: a video decoder that decodes a video stream to generate a first video signal; an external metadata acquisition unit that acquires one or more pieces of metadata corresponding to one or more first conversion modes; an HDR metadata interpreter that interprets one of the one or more pieces of metadata to acquire characteristic data and conversion auxiliary data; a DR converter that supports one or more second conversion modes and performs conversion processing of a luminance range of the first video signal based on the conversion auxiliary data to generate a second video signal; and an HDMI output unit that outputs the second video signal to a display apparatus.

## Claims

### Claim 1

A playback apparatus connected to a display apparatus, the playback apparatus comprising:
an input circuitry acquiring a video signal;
a receiver receiving a first information from the display apparatus, the first information indicating a conversion scheme of luminance supported by the display apparatus;
a luminance converter converting a luminance of the video signal;
an output circuitry outputting the video signal; and
a controller determining which of the display apparatus and the playback apparatus is to perform luminance conversion based on the first information and a second information which indicates a conversion scheme of luminance supported by the playback apparatus,
wherein the output circuitry outputs the video signal whose luminance is converted by the luminance converter based on the second information when the controller determines that the playback apparatus is to perform luminance conversion, and the video signal is displayed on the display apparatus after being converted by the luminance converter, and
wherein the output circuitry outputs the video signal whose luminance is not converted by the luminance converter when the controller determines that the display apparatus is to perform luminance conversion, and the video signal is displayed on the display apparatus after luminance conversion is performed by the display apparatus.

### Claim 2 (depends on 1)

The playback apparatus according to claim 1, wherein the output circuitry outputs metadata which is necessary for converting the luminance using the conversion scheme indicated by the first information, in addition to the video signal whose luminance is not converted by the luminance converter.