Invention Grant
US09392246B2 Recording medium, playback device, recording device, encoding method, and decoding method related to higher image quality
有权
记录介质，播放装置，记录装置，编码方法和与更高图像质量有关的解码方法
- Patent Title: Recording medium, playback device, recording device, encoding method, and decoding method related to higher image quality
- Patent Title (中): 记录介质，播放装置，记录装置，编码方法和与更高图像质量有关的解码方法
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Application No.: US14113283Application Date: 2012-04-26
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Publication No.: US09392246B2Publication Date: 2016-07-12
- Inventor: Tomoki Ogawa , Taiji Sasaki , Hiroshi Yahata
- Applicant: Tomoki Ogawa , Taiji Sasaki , Hiroshi Yahata
- Applicant Address: JP Osaka
- Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Current Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Current Assignee Address: JP Osaka
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- International Application: PCT/JP2012/002853 WO 20120426
- International Announcement: WO2012/147350 WO 20121101
- Main IPC: H04N19/30
- IPC: H04N19/30 ; H04N9/808 ; G11B20/10 ; G11B20/12 ; H04N9/804 ; G11B20/00
Abstract:
A recording method for recording a base video stream and an enhancement video stream. The recording method includes: a first step of generating the base video stream by performing an irreversible conversion on an original image; and a second step of generating the enhancement video stream that includes a shift parameter and picture data. A gradation bit sequence of each pixel constituting the picture data of the enhancement video stream represents a difference between a gradation bit sequence of each pixel constituting picture data of the original image and a gradation bit sequence of each pixel constituting picture data of the base video stream. The shift parameter defines a shift operation that is performed by a playback device when the gradation bit sequence of the base video stream is added to the gradation bit sequence of the enhancement video stream.
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