METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING ULTRA HIGH-DEFINITION BROADCASTING SIGNAL FOR EXPRESSING HIGH-QUALITY COLOR IN DIGITAL BROADCASTING SYSTEM
원문보기
IPC분류정보
국가/구분
United States(US) Patent
공개
국제특허분류(IPC7판)
H04N-021/438
H04N-021/426
H04N-021/6336
출원번호
US-0903820
(2014-07-14)
공개번호
US-0156965
(2016-06-02)
국제출원번호
PCT/KR2014/006301
(2014-07-14)
발명자
/ 주소
OH, Hyunmook
SUH, Jongyeul
HWANG, Soojin
출원인 / 주소
OH, Hyunmook
인용정보
피인용 횟수 :
0인용 특허 :
0
초록▼
The present invention relates to a method and an apparatus for transmitting and receiving an ultra high-definition broadcasting signal for expressing high-quality color in a digital broadcasting system. An apparatus for receiving an ultra high-definition broadcasting signal according to one embodime
The present invention relates to a method and an apparatus for transmitting and receiving an ultra high-definition broadcasting signal for expressing high-quality color in a digital broadcasting system. An apparatus for receiving an ultra high-definition broadcasting signal according to one embodiment of the present invention comprises: a receiving unit for receiving an ultra high-definition broadcasting signal which includes ultra high-definition broadcasting contents and display information metadata representing display environment information suitable for the ultra high-definition broadcasting contents; a decoder for decoding the received ultra high-definition broadcasting contents and the display information metadata; a controlling unit for adjusting the display environment of the receiving apparatus to a display environment suitable for the ultra high-definition broadcasting contents using the display information metadata; and a reproducing unit for reproducing the ultra high-definition broadcasting contents.
대표청구항▼
1. An apparatus for receiving an Ultra High Definition (UHD) broadcast signal comprising: a receiver configured to receive an UHD broadcast signal that includes UHD broadcast content and display information metadata indicating display environment information appropriate for the UHD broadcast content
1. An apparatus for receiving an Ultra High Definition (UHD) broadcast signal comprising: a receiver configured to receive an UHD broadcast signal that includes UHD broadcast content and display information metadata indicating display environment information appropriate for the UHD broadcast content;a decoder configured to decode the received UHD broadcast content and the display information metadata;a controller configured to adjust a display environment of the receiving apparatus to another display environment appropriate for the UHD broadcast content using the display information metadata; anda reproduction unit configured to reproduce the UHD broadcast content. 2. The apparatus according to claim 1, wherein the display information metadata includes at least one of minimum reference luminance information indicating minimum luminance from among a plurality of recommended display luminance ranges needed to reproduce the UHD broadcast content under an optimum display environment, maximum reference luminance information indicating maximum luminance from among a plurality of recommended display luminance ranges needed to reproduce the UHD broadcast content under the optimum display environment, and EOTF (Electro Optical Transfer Function) gamma index information indicating a gamma index used in an EOTF needed to calculate luminance appearing in the reproduction unit of the receiving apparatus. 3. The apparatus according to claim 1, wherein the display information metadata includes at least one of reference achromatic color gamut information indicating position associated information on an achromatic color gamut dependent upon a predetermined color temperature, color temperature designation flag information indicating whether an arbitrary color temperature is designated, and arbitrary achromatic color gamut information indicating position associated information on the achromatic color gamut dependent upon an arbitrary color temperature when the arbitrary color temperature is designated. 4. The apparatus according to claim 1, wherein the display information metadata includes at least one of gamut designation flag information indicating whether an arbitrary gamut is designated, reference gamut information indicating a standard color gamut indicating a color of content, arbitrary color gamut coordinates information indicating coordinates of red, green, and blue on an arbitrary color gamut when the arbitrary color gamut instead of the standard color gamut is designated, coefficient number information indicating the number of coefficients used in conversion when the conversion to the arbitrary color gamut on the basis of the standard color gamut is achieved, and gamut mapping coefficient information indicating a coefficient used for conversion to the arbitrary color gamut. 5. The apparatus according to claim 2, wherein: the display information metadata is contained in a supplemental enhancement information (SEI) message and then transmitted, or is contained in an event information table (EIT) including information regarding each event constructing UHD broadcast content and then transmitted. 6. The apparatus according to claim 5, wherein: the display information metadata is contained in an event level descriptor that describes information applied to each event in the event information table (EIT), and then transmitted. 7. The apparatus according to claim 5, wherein the event information table (EIT) further includes: an UHD program information descriptor configured to identify an UHD broadcast service including the display information metadata. 8. A method for transmitting an Ultra High Definition (UHD) broadcast signal comprising: encoding not only UHD video data constructing an UHD broadcast content, but also display information metadata indicating display environment information appropriate for the UHD broadcast content;multiplexing the encoded UHD video data and the display information metadata; andtransmitting the multiplexed UHD video data and the multiplexed display information data. 9. The method according to claim 8, wherein the display information metadata includes at least one of minimum reference luminance information indicating minimum luminance from among a plurality of recommended display luminance ranges needed to reproduce the UHD broadcast content under an optimum display environment, maximum reference luminance information indicating maximum luminance from among a plurality of recommended display luminance ranges needed to reproduce the UHD broadcast content under the optimum display environment, and EOTF (Electro Optical Transfer Function) gamma index information indicating a gamma index used in an EOTF needed to calculate luminance appearing in a display unit of a broadcast signal receiver. 10. The method according to claim 8, wherein the display information metadata includes at least one of reference achromatic color gamut information indicating position associated information on an achromatic color gamut dependent upon a predetermined color temperature, color temperature designation flag information indicating whether an arbitrary color temperature is designated, and arbitrary achromatic color gamut information indicating position associated information on the achromatic color gamut dependent upon an arbitrary color temperature when the arbitrary color temperature is designated. 11. The method according to claim 8, wherein the display information metadata includes at least one of gamut designation flag information indicating whether an arbitrary gamut is designated, reference gamut information indicating a standard color gamut indicating a color of content, arbitrary color gamut coordinates information indicating coordinates of red, green, and blue on an arbitrary color gamut when the arbitrary color gamut instead of the standard color gamut is designated, coefficient number information indicating the number of coefficients used in conversion when the conversion to the arbitrary color gamut on the basis of the standard color gamut is achieved, and gamut mapping coefficient information indicating a coefficient used for conversion to the arbitrary color gamut. 12. The method according to claim 9, wherein: the display information metadata is contained in a supplemental enhancement information (SEI) message and then transmitted, or is contained in an event information table (EIT) including information regarding each event constructing UHD broadcast content and then transmitted. 13. The method according to claim 12, wherein: the display information metadata is contained in an event level descriptor that describes information applied to each event in the event information table (EIT), and then transmitted. 14. The method according to claim 12, wherein the event information table (EIT) further includes: an UHD program information descriptor configured to identify an UHD broadcast service including the display information metadata. 15. The apparatus according to claim 3, wherein: the display information metadata is contained in a supplemental enhancement information (SEI) message and then transmitted, or is contained in an event information table (EIT) including information regarding each event constructing UHD broadcast content and then transmitted. 16. The apparatus according to claim 4, wherein: the display information metadata is contained in a supplemental enhancement information (SEI) message and then transmitted, or is contained in an event information table (EIT) including information regarding each event constructing UHD broadcast content and then transmitted. 17. The method according to claim 10, wherein: the display information metadata is contained in a supplemental enhancement information (SEI) message and then transmitted, or is contained in an event information table (EIT) including information regarding each event constructing UHD broadcast content and then transmitted. 18. The method according to claim 11, wherein: the display information metadata is contained in a supplemental enhancement information (SEI) message and then transmitted, or is contained in an event information table (EIT) including information regarding each event constructing UHD broadcast content and then transmitted.
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