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

Patent metadata

Field	Value
Publication number	US-10419709-B2
Application number	US-201716079065-A
Country	US
Kind code	B2
Filing date	Jun 22, 2017
Priority date	Jul 1, 2016
Publication date	Sep 17, 2019
Grant date	Sep 17, 2019

Abstract

A technology of preventing feeling of a viewer on brightness from significantly changing when content is switched is provided. A transmitting device ( 1 ) includes a calculation unit ( 12 ) that calculates a video feature of a transmission video signal, and a mute video generation unit ( 13 ) 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.

First claim

The invention claimed is:

1. A transmitting device comprising:
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 and prior to a second video signal,
wherein luminance of the mute video is luminance corresponding to a value of a video feature relating to the first video signal and a video feature relating to the second video signal.

2. The transmitting device according to claim 1 ,
wherein the video feature relating to the first video signal is a video feature within a predetermined period of the first video signal, and
wherein the video feature relating to the second video signal is a video feature within a predetermined period of the second video signal.

3. The transmitting device according to claim 1 ,
wherein the video feature is a sense luminance value representing a sense of brightness.

4. The transmitting device according to claim 3 ,
wherein the calculation unit calculates the sense luminance value with reference to at least one of an average luminance, a maximum luminance, a median value of the luminance values, and MaxFALL of the video signal.

5. The transmitting device according to claim 3 ,
wherein the calculation unit calculates the sense luminance value by excluding at least one of a screen having an average luminance less than or equal to a first threshold value and a screen having an average luminance greater than or equal to a second threshold value, among display videos which are represented by the video signal.

6. A non-transitory computer readable recording medium comprising:
the control program that causes a computer to function as the transmitting device according to claim 1 .

7. A transmitting method comprising:
a calculation step of calculating a video feature of a transmission video signal; and
a mute video generation step of generating a mute video posterior to a first video signal and prior to a second video signal,
wherein luminance of the mute video is luminance corresponding to a value of a video feature relating to the first video signal and a video feature relating to the second video signal.

Assignees

• Sharp Kk

Inventors

• Sakurai Ryoji
• Suzuki Hideki
• Nishigaki Tomoo
• Yoshiyama Kazuyoshi
• Shibamoto Naoaki
• Tetsuka Yasushi

Classifications

• H04N21/440254

  by altering signal-to-noise parameters, e.g. requantization · CPC title

• H04N9/74

  for obtaining special effects (H04N9/65 - H04N9/73 take precedence) · CPC title

• H04N21/44008

  involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream (arrangements characterised by components specially adapted for monitoring, identification or recognition of video in broadcast systems H04H60/59) · CPC title

• H04N5/57 Primary

  Control of contrast or brightness · CPC title

• H04N7/007

  Systems with supplementary picture signal insertion during a portion of the active part of a television signal, e.g. during top and bottom lines in a HDTV letter-box system · CPC title