Title:
ENCODING DEVICE COMPRISING VIDEO SWITCHING DEVICE, ENCODING METHOD INCLUDING VIDEO SWITCHING DETECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2017/163619
Kind Code:
A1
Abstract:
[Problem] The purpose of the present invention is to prevent image quality degradation during the switching that occurs when video signals are encoded. [Solution] This video switching device comprises: a video switching unit that has at least two video signal input units; and an encoding device. The video switching device is characterized in that the video switching unit has: a first control detection unit that, on the basis of an externally inputted control signal, outputs a pre-control signal; a second control detection unit that, on the basis of the control signal, outputs a camera switching command signal for switching camera video signals during a vertical blanking interval; and a camera video switching unit that switches two video signals. The video switching device is also characterized in that the encoding device has: an encoding unit that encodes video signals; and a control unit that, by means of the pre-control signal, reduces the amount of code generated by the encoding unit.
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Inventors:
MIYASHITA ATSUSHI (JP)
TAKESUE HIROYUKI (JP)
TAKESUE HIROYUKI (JP)
Application Number:
PCT/JP2017/003754
Publication Date:
September 28, 2017
Filing Date:
February 02, 2017
Export Citation:
Assignee:
HITACHI INT ELECTRIC INC (JP)
International Classes:
H04N19/115; H04N5/225; H04N19/142; H04N19/162
Foreign References:
| JP2001128165A | 2001-05-11 | |||
| JP2007124580A | 2007-05-17 |
Other References:
YASUHIRO ISHIKAWA ET AL.: "Study the encoding process by the video switching method", ITE TECHNICAL REPORT, vol. 40, no. 14, 4 March 2016 (2016-03-04), pages 37 - 40
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