Sharp Kabushiki Kaisha Corporation

Tomoo Nishigaki

Kazuyoshi Yoshiyama

Ryoji Sakurai

Hideki Suzuki

Yasushi Tetsuka

Naoaki Shibamoto

Toshiyuki Fujine

A technology of preventing feeling of a viewer on brightness from significantly changing when content is switched is provided. A video display device () includes a calculation unit () that calculates video feature relating to a display video, and a mute video display unit that displays a mute video posterior to a first display video, in which luminance of the mute video is luminance corresponding to a value of the video feature relating to the first display video.

Video display device, television receiver, transmitting device, control program, and recording medium

A video signal conversion device is realized in which even in a case where an HDR video signal following a first video format is converted into a HDR video signal following a second video format, supplementary information related to the HDR video signal following the original first video format is not lost. The video signal conversion device (or) includes: a conversion unit () that converts the high dynamic range video signal following the first video format into the high dynamic range video signal following the second video format; and an output unit () that outputs the supplementary information which is related to the high dynamic range video signal following the first video format.

Video signal conversion device, video signal conversion method, video signal conversion system, control program, and recording medium

A technology of preventing feeling of a viewer on brightness from significantly changing when content is switched is provided. A transmitting device () includes a calculation unit () that calculates a video feature of a transmission video signal, and a mute video generation unit () that generates a mute video posterior to a first video signal, in which luminance of the mute video is luminance corresponding to a value of a video feature relating to the first video signal.

Video processing device, transmitting device, control program, and recording medium

A video recording apparatus compresses video data so that a bit rate converges to a target bit rate while keeping a minimum image quality and records the compressed video data. The video recording apparatus (exemplified by a recording and reproducing apparatus ()) comprises a compressing portion (exemplified by a transcoder ()) which compresses the video data while executing a rate control including a change of a quantization step so that a bit rate in a predetermined period converges to a target bit rate; a recording portion which records the compressed data in a recording medium; and a total rate calculation portion that calculates a total bit rate of a result of compression of the video data by the compressing portion from the start of the compression to the present time. The compressing portion comprises a quantization step limiting portion which limits the changed quantization step to a predetermined upper limit lower than an upper limit changeable in the compressing portion, and a quantization step fixing portion which fixes the quantization step to the predetermined upper limit when the calculated total bit rate exceeds the target bit rate.

Video recording apparatus

In a case of changing the resolution of the synthesized image signal obtained by synthesizing the first image signal and a second image signal, identification information for identifying whether or not the character signal is contained is added to the synthesized image signal based on presence/absence of the character signal, by a character signal creating unit and a character signal synthesizing unit. Then, based on the identification information, a resolution changing unit separates the synthesized image signal into a third image signal containing a component of the character signal and a fourth image signal containing no component of the character signal, changes the resolutions of the third image signal and the fourth image signal, and synthesizes the third image signal and the fourth image signal with the resolutions changed, based on the identification information.

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Sakai, Japan

Tomoo Nishigaki