公开(公告)号：US20210127084A1

公开(公告)日：2021-04-29

申请号：US16617059

申请日：2018-05-21

Applicant: SONY CORPORATION

Inventor： KOUICHI UCHIMURA ,  KENJIRO UEDA

IPC: H04N5/85 ,  H04N21/434 ,  H04N9/804 ,  H04N9/82

Abstract: A configuration is implemented that converts MMT format data to MPEG-2 TSV format data for recording onto medium, thereby permitting copy control in compliance with the initial copy control information. MMT format data with copy control information set therein is input and converted to MPEG-2 TS format data for re-cording onto information recording medium. The copy control information recorded in the service description table (MH-SDT) stipulated by the MMT format is acquired and, in accordance with predetermined conversion rules, used to generate the copy control information for recording to the program map table (PMT) stipulated by the MPEG-2 TS. For example, the EPN and CCI values to be recorded to the PMT are determined in accordance with the conversion rules.

公开(公告)号：US20190339061A1

公开(公告)日：2019-11-07

申请号：US16475435

申请日：2018-01-15

Applicant: SONY CORPORATION

Inventor： HIROSHI MORITA ,  KAZUAKI TOBA ,  MASANARI YAMAMOTO ,  KENJIRO UEDA ,  RYOHEI TAKAHASHI

IPC: G01B11/08 ,  G01B11/24 ,  G01B11/26

Abstract: An optical axis or a diameter of light of even a light beam having a non-uniform intensity distribution is stably obtained. An outer shape of a range of a light intensity having a specified ratio with respect to a total light intensity on a cross-section of a light beam is obtained. An approximate circle is obtained from this outer shape. For example, the approximate circle is calculated by using the least-squares method. An optical axis and/or a diameter of light of the light beam is obtained on the basis of this approximate circle.

公开(公告)号：US20210021359A1

公开(公告)日：2021-01-21

申请号：US16982586

申请日：2019-03-12

Applicant: SONY CORPORATION

Inventor： KOUICHI UCHIMURA ,  KENJIRO UEDA ,  TAKEHIKO NAKANO

IPC: H04H60/18 ,  H04H60/23 ,  H04N21/436 ,  H04N21/8355

Abstract: To enable copy control according to original copy control information at a data output destination by converting copy control information defined in MMT format data into copy control information defined by DTCP and transmitting the converted copy control information to a network-connected device. The copy control information defined in the MMT format data is converted into the copy control information defined by DTCP and transmitted to the network-connected device. In the case where the transmission data is any of a 4K image, an 8K image, or an HDR image, and in a case where the copy control information defined by DTCP2 and the transmission data are images are 2K images or SDR images, the copy control information defined by DTCP1 is generated and recorded in a control information storage packet or a program map table (PMT) to be transmitted to a network-connected device, and transmitted.

公开(公告)号：US20170322890A1

公开(公告)日：2017-11-09

申请号：US15531264

申请日：2015-11-13

Applicant: SONY CORPORATION

Inventor： KENJIRO UEDA ,  RYOHEI TAKAHASHI

IPC: G06F12/14

Abstract: A configuration capable of performing reliable source analysis of illegal copy content using content in which a reproduction path is settable is implemented. Content in which an individual segment region including a plurality of pieces of variation data which include different identification information embedded therein and are decryptable using different keys and a common segment region including single data are provided, and variation data is configured with an aligned unit is set. A content reproducing device calculates a reproduction path by applying a device key and selects and reproduces an aligned unit corresponding to the reproduction path on the basis of a variation data identifier recorded in an adaptation field in a plain text region at the head of a plurality of aligned units constituting the variation data.

公开(公告)号：US20200045263A1

公开(公告)日：2020-02-06

申请号：US16478958

申请日：2018-01-22

Applicant: SONY CORPORATION

Inventor： KOUICHI UCHIMURA ,  KENJIRO UEDA

IPC: H04N5/913 ,  H04W12/00 ,  H04N21/4402 ,  H04N21/435 ,  H04N21/433

Abstract: A configuration capable of recording MMT format data on a medium as BDAV format data and performing copy control according to the original copy control information is achieved. The MMT format data, for which copy control information is set, is input and recorded on an information recording medium as BDAV format data. As record data, (a) a stream file including a packet string in which the MMT format data is stored, and (b) copy control information corresponding to the stream file, in which the copy control information corresponding to the MMT format data is reflected, are generated and recorded as an additional header of a packet included in the stream file or as another file.

公开(公告)号：US20200013431A1

公开(公告)日：2020-01-09

申请号：US16491064

申请日：2018-03-08

Applicant: SONY CORPORATION

Inventor： KENJIRO UEDA ,  KOUICHI UCHIMURA

IPC: G11B20/10 ,  G11B20/00

Abstract: A configuration is realized in which block encryption MMT format data is reproduced by applying a time stamp. An MMT format stream file and a reproduction control information file are generated and recorded in a medium. The stream file includes encryption block data to which an encryption key generated by using an additional header in which copy control information of a block unit is stored, as a seed, is applied, and the additional header. Position identification information capable of determining a position of reproduction data, a position of the seed to be applied to decoding of the reproduction data, a position of the time stamp, and a position of the seed to be applied to decoding of the time stamp is recorded in the reproduction control information file. Data decoding, and reproduction to which the time stamp is applied are performed by using recording information.

公开(公告)号：US20180239879A1

公开(公告)日：2018-08-23

申请号：US15751996

申请日：2016-08-19

Applicant: SONY CORPORATION

Inventor： KENJIRO UEDA ,  TATEO OISHI

IPC: G06F21/10 ,  G11B20/10 ,  H04L9/08

CPC classification number: G06F21/10 ,  G06F2221/0704 ,  G11B20/00086 ,  G11B20/0021 ,  G11B20/00362 ,  G11B20/00427 ,  G11B20/00492 ,  G11B20/00862 ,  G11B20/10 ,  H04L9/0836 ,  H04L9/0861 ,  H04L2209/60 ,  H04N5/765 ,  H04N5/913 ,  H04N2005/91364

Abstract: A configuration in which usage control that is substantially similar to content usage control in a copy source medium can be performed in a content copy destination is implemented. A data processing unit that performs a copy process of recording data recorded on a first medium on a second medium records encrypted content in the first medium on the second medium, without decrypting the encrypted content. In addition, the data processing unit converts a CPS unit key file recorded on the first medium to generate a converted CPS unit key file and records the converted CPS unit key file on the second medium. Further, the data processing unit acquires an MKB not requiring KCD, which is capable of directly calculating a media key using only a device key, without using key conversion data (KCD) recorded on the first medium, from a server and records the MKB not requiring KCD on the second medium.