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Patent Searching and Data


Title:
DISPLAY DEVICE, CONTROL METHOD AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2019/176060
Kind Code:
A1
Abstract:
A display device (100) is connected to a signal source that outputs a video signal using an encryption protocol, and the display device transmits a code key to be used in the encryption protocol to the signal source. The display device (100) includes: a transmission unit (110) which transmits, to the signal source and to another display device connected as a higher level device in a daisy-chain connection, a host code key which is a code key uniquely set for the display device (100) and a code key which has been transmitted from another display device connected to the display device (100) as a lower level device in the daisy chain connection; and a stop instruction unit (120) that, if the host code key is included in a code key group which includes a plurality of code keys that have been transmitted from other display devices connected as lower level devices, issues an instruction to stop transmission of the received code keys on the basis of the order of the host code key included in the code key group, the instruction being issued to another display device corresponding to a prescribed code key included in the code key group.

Inventors:
KOYANAGI Kazuyuki (4-28, Mita 1-chome, Minato-k, Tokyo 73, 〒1080073, JP)
Application Number:
JP2018/010271
Publication Date:
September 19, 2019
Filing Date:
March 15, 2018
Export Citation:
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Assignee:
NEC DISPLAY SOLUTIONS, LTD. (4-28, Mita 1-chome Minato-k, Tokyo 73, 〒1080073, JP)
International Classes:
G09G5/00
Domestic Patent References:
WO2016170596A12016-10-27
WO2015041139A12015-03-26
Foreign References:
US20120257750A12012-10-11
JP2007085009A2007-04-05
JP2017156414A2017-09-07
Attorney, Agent or Firm:
MIYAZAKI Teruo et al. (3F Tamachi Square, 26-24 Shiba 5-chome, Minato-k, Tokyo 14, 〒1080014, JP)
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