Title:
TRANSMISSION DEVICE, RELAY DEVICE, AND RECEPTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/177002
Kind Code:
A1
Abstract:
The present invention addresses the problem that, in a transfer system for relaying a video signal from a transmission device to a reception device, it becomes necessary to switch connection cables to a video reception device for receiving a DC signal input if transmission devices for an AC signal output and a DC signal output are simultaneously present. In order to solve the problem, a relay device or a connection cable for relaying a video signal from a transmission device to a reception device comprises a control unit for detecting whether the received video signal is an AC signal output or a DC signal output, and a current pulling unit for pulling a predetermined current from the received video signal. If the received video signal is an AC signal output, the control unit is configured to control the current pulling unit to pull the predetermined current. If the received video signal is a DC signal output, the control unit is configured to control the current pulling unit to stop the pulling of current, and to transfer the video signal from the transmission device to the reception device.
Inventors:
KABUTO NOBUAKI (JP)
KATSUKI MANABU (JP)
AKIYAMA HITOSHI (JP)
KATSUKI MANABU (JP)
AKIYAMA HITOSHI (JP)
Application Number:
PCT/JP2021/005374
Publication Date:
September 10, 2021
Filing Date:
February 12, 2021
Export Citation:
Assignee:
MAXELL LTD (JP)
International Classes:
H04N21/436; H04L25/02; H04N21/442
Domestic Patent References:
| WO2019059151A1 | 2019-03-28 | |||
| WO2017187515A1 | 2017-11-02 |
Foreign References:
| JP2020018018A | 2020-01-30 | |||
| JP2013258667A | 2013-12-26 | |||
| JP2012507947A | 2012-03-29 |
Attorney, Agent or Firm:
SEIRYO I.P.C. (JP)
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