The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 03, 2023
Filed:
Mar. 15, 2018
Nec Display Solutions, Ltd., Tokyo, JP;
Kazuyuki Koyanagi, Tokyo, JP;
SHARP NEC DISPLAY SOLUTIONS, LTD., Tokyo, JP;
Abstract
A display device connected to a signal source outputting a video signal using an encryption protocol and that transmits the encryption key to the signal source includes: a transmission unit that transmits an own encryption key uniquely set for the display device and an encryption key transmitted from another display device connected to the display device as a lower device to the signal source and another display device connected as an upper device; and a stop instruction unit that instructs another display device corresponding to a predetermined encryption key included in an encryption key group based on the order of the own encryption keys included in the encryption key group to stop transmitting the encryption key received when the own encryption key is included in the encryption key group including a plurality of encryption keys transmitted from another display device connected as the lower device.