公开(公告)号：AU9461198A

公开(公告)日：1999-05-03

申请号：AU9461198

申请日：1998-10-14

Applicant: PANASONIC IP CORP AMERICA

Inventor： MORI YOSHIHIRO ,  KOZUKA MASAYUKI ,  SHIMBO MASATOSHI ,  ABE TADASHI

IPC: G11B19/02 ,  G11B20/10 ,  G11B20/12 ,  G11B27/10 ,  G11B27/30 ,  G11B27/32

Abstract: An information storing disk including at least one system stream stored thereon. The at least one system stream includes a silent cell for defining a silent period and an audio cell for defining audio data to be reproduced after the silent period. The silent period is a period to be silent, which is from when one system stream to be reproduced among at least one system stream is determined until reproduction of an audio cell included in the one system stream is started.

公开(公告)号：MX376811B

公开(公告)日：2025-03-07

申请号：MX2017009553

申请日：2017-07-21

Applicant: PANASONIC IP CORP AMERICA

Inventor： YAMAMOTO MASAYA ,  KOZUKA MASAYUKI ,  TOMA TADAMASA ,  NISHIO TOSHIROH ,  MORI YOSHIHIRO

IPC: H04L9/32 ,  G06F3/14 ,  G06F7/58 ,  G06F21/44 ,  G09G5/00 ,  H04L9/30 ,  H04N21/4367

Abstract: Se proporciona un método de autenticación en un dispositivo de origen 100 que está conectado por comunicación a un dispositivo de recepción 200 en una forma de Interfaz Multimedia de Alta Definición (HDMI) (marca registrada), el método de autenticación incluyendo: adquirir un número aleatorio (s131); transmitir el número aleatorio al dispositivo de recepción 200 por comunicación a través de un bus de control de electrónica de consumo (CEC) 310 (s132) de la HDMI; recibir primera información de firma e información de capacidad 22 del dispositivo de recepción 200 por la comunicación, la primera información de firma siendo información en la que el número aleatorio es cifrado usando la primera clave secreta 10 del dispositivo de recepción 200, la información de capacidad 22 siendo información acerca de la capacidad de presentación visual del dispositivo de recepción 200 (s133); adquirir un resultado de una primera determinación de si la primera información descifrada es compatible con el número aleatorio transmitido, la primera información descifrada siendo obtenida descifrando la primera información de firma recibida usando la primera clave pública 21 emparejada con la primera clave secreta 10 (s134); y cuando la primera información descifrada es compatible con el número aleatorio transmitido como el resultado de la primera determinación, determinar que la información de capacidad recibida es información correcta para dar salida a video correspondiente a la información de capacidad al dispositivo de recepción 200 (s136).

公开(公告)号：MX379447B

公开(公告)日：2025-03-11

申请号：MX2020000535

申请日：2017-11-16

Applicant: PANASONIC IP CORP AMERICA

Inventor： HIRAKAWA HARUYASU ,  NAKANISHI HIROKAZU ,  KOZUKA MASAYUKI ,  TOMA TADAMASA ,  HIGASHIDA TAKASHI ,  MORI YOSHIHIRO

IPC: H04N21/431 ,  H04N21/435

Abstract: Se proporciona un método de presentación visual para presentar visualmente, en un dispositivo de presentación visual, video de datos de video donde la luminancia de video está definida por una primera EOTF (función de transferencia electro-óptica) que indica una correlación de luminancia de HDR (alto intervalo dinámico) y valores de código. El método incluye: adquirir los datos de video; llevar a cabo, con respecto a cada uno de una pluralidad de pixeles que componen el video incluido en los datos de video adquiridos, primera determinación de determinar si la luminancia de ese pixel excede o no una primera luminancia predeterminada; llevar a cabo, con respecto a cada uno de la pluralidad de pixeles, asignación de tonos dual donde la luminancia de ese pixel se reduce por un formato diferente en caso de que se encuentre que la luminancia del pixel supera la primera luminancia predeterminada como resultado de la primera determinación, y en caso de que se encuentre que la luminancia del pixel es igual o inferior a la primera luminancia predeterminada; y presentar visualmente el video en el dispositivo de presentación visual usando los resultados de la asignación de tonos dual.

公开(公告)号：EP3297288A4

公开(公告)日：2018-03-21

申请号：EP16792319

申请日：2016-02-08

Applicant: PANASONIC IP CORP AMERICA

Inventor： KOZUKA MASAYUKI ,  HIGASHIDA TAKASHI ,  MORI YOSHIHIRO ,  HIRAKAWA HARUYASU ,  TOMA TADAMASA

IPC: H04N21/431 ,  H04N21/435

CPC classification number: H04N5/57 ,  H04N5/20 ,  H04N9/646 ,  H04N11/002 ,  H04N21/431 ,  H04N21/435

Abstract: Provided is a display method of displaying, on a display device, video of video data where luminance of video is defined by a first EOTF (Electro-Optical Transfer Function) corresponding to HDR (High Dynamic Range). The method includes: acquiring the video data; performing first conversion where the luminance of the video is converted to a luminance corresponding to a dynamic range of a third EOTF, where, with regard to a second EOTF that is part of the first EOTF and is the part of a luminance range where the peak luminance indicated by the peak luminance information included in the acquired video data is the maximum luminance, the dynamic range of luminance of the second EOTF is reduced with the maximum luminance of the second EOTF matching the displayable luminance of the display device, while maintaining the relative relationship of luminance of the second EOTF; and displaying the video on the display device using the result of the first conversion.

公开(公告)号：EP3249910A4

公开(公告)日：2018-01-03

申请号：EP15866381

申请日：2015-11-13

Applicant: PANASONIC IP CORP AMERICA

Inventor： MORI YOSHIHIRO ,  KOZUKA MASAYUKI ,  TOMA TADAMASA

IPC: H04N5/93 ,  G11B27/10 ,  G11B27/11 ,  G11B27/34 ,  G11B27/36 ,  H04N5/765 ,  H04N21/436 ,  H04N21/4363 ,  H04N21/472 ,  H04N21/485 ,  H04N21/6547 ,  H04N21/658 ,  H04N21/81

CPC classification number: G11B27/36 ,  G11B27/105 ,  G11B27/11 ,  G11B27/34 ,  G11B2220/2541 ,  H04N5/765 ,  H04N5/93 ,  H04N21/43615 ,  H04N21/43635 ,  H04N21/47217 ,  H04N21/485 ,  H04N21/6547 ,  H04N21/6582 ,  H04N21/816

Abstract: A playback system more correctly determines whether a playback system supports, for example, an optional feature. A playback control method for use in a playback apparatus (101) of a playback system (100) including the playback apparatus (101) that plays back video and a display apparatus (103) that displays the video played back by the playback apparatus (101) is provided. The method includes a first determination step (S201) of determining whether the display apparatus (103) supports an optional feature for playback of the video by using a first technique and a second determination step (S202) of determining whether the display apparatus (103) supports the optional feature for playback of the video by using a second technique that differs from the first technique if it is indeterminate whether the display apparatus (103) supports the optional feature by using the first technique.

公开(公告)号：EP3346714A4

公开(公告)日：2018-07-11

申请号：EP16841020

申请日：2016-06-20

Applicant: PANASONIC IP CORP AMERICA

Inventor： NISHIO TOSHIROH ,  YAMAMOTO MASAYA ,  KOZUKA MASAYUKI ,  MORI YOSHIHIRO ,  TOMA TADAMASA

IPC: H04N21/4367 ,  G06F3/14 ,  G06F21/44 ,  G09G5/00 ,  H04L9/32 ,  H04L29/06 ,  H04N21/4363

CPC classification number: H04L9/3263 ,  G06F3/14 ,  G06F7/588 ,  G06F21/44 ,  G06F2221/2103 ,  G09G5/005 ,  H04L9/14 ,  H04L9/30 ,  H04L9/32 ,  H04L9/321 ,  H04L9/3247 ,  H04L9/3271 ,  H04L63/0838 ,  H04L2209/60 ,  H04N21/43635 ,  H04N21/4367

Abstract: Provided is an authentication method in source device 100 that is communication-connected to sink device 200 in a form of High-Definition Multimedia Interface (HDMI) (registered trademark), the authentication method including: acquiring a random number (S131); transmitting the random number to sink device 200 by communication through HDMI Consumer Electronics Control (CEC) bus 310 (S132); receiving first signature information and capability information 22 from sink device 200 by the communication, the first signature information being information in which the random number is encrypted using first secret key 10 of sink device 200, capability information 22 being information about display capability of sink device 200 (S133); acquiring a result of a first determination whether first decrypted information is compatible with the transmitted random number, the first decrypted information being obtained by decrypting the received first signature information using first public key 21 paired with first secret key 10 (S134); and when the first decrypted information is compatible with the transmitted random number as the result of the first determination, determining that the received capability information is correct information to output video corresponding to the capability information to sink device 200 (S136).

公开(公告)号：EP3306944A4

公开(公告)日：2018-06-06

申请号：EP16799494

申请日：2016-02-08

Applicant: PANASONIC IP CORP AMERICA

Inventor： KOZUKA MASAYUKI ,  HIGASHIDA TAKASHI ,  MORI YOSHIHIRO ,  HIRAKAWA HARUYASU ,  TOMA TADAMASA ,  NAKANISHI HIROKAZU

IPC: H04N21/431 ,  G09G5/00 ,  G09G5/10 ,  H04N9/69 ,  H04N21/435

CPC classification number: G06T5/009 ,  G06T5/50 ,  G06T2207/10016 ,  G06T2207/10024 ,  G06T2207/20208 ,  G09G5/00 ,  G09G5/10 ,  H04N9/69 ,  H04N21/431 ,  H04N21/435

Abstract: Provided is a display method of displaying, on a display device, video of video data where luminance of video is defined by a first EOTF (Electro-Optical Transfer Function) indicating a correlation of HDR (High Dynamic Range) luminance and code values. The method includes: acquiring the video data; performing, regarding each of a plurality of pixels making up the video included in the acquired video data, first determining of determining whether or not luminance of that pixel exceeds a first predetermined luminance; performing, regarding each of the plurality of pixels, dual tone mapping where luminance of that pixel is reduced by a different format in a case of the luminance of the pixel being found to exceed the first predetermined luminance as a result of the first determining, and a case of the luminance of the pixel being found to be equal to or lower than the first predetermined luminance; and displaying the video on the display device using the results of the dual tone mapping.