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:
Oct. 31, 2006
Filed:
Sep. 09, 2003
Hiroyuki Tsuji, Anjo, JP;
Ryozo Okumura, Kariya, JP;
Hiroyuki Tsuji, Anjo, JP;
Ryozo Okumura, Kariya, JP;
Denso Corporation, Kariya, JP;
Abstract
Provided is a remote control system capable of preventing a key code from being deciphered when the key code is transmitted from a transmitter to a receiver to be registered. In the transmitter, in response to a specified switch operation, a k-th common key code in a table to be used for enciphering a key code is changed to a registration key code stored in advance so that a key code is enciphered through the use of the table including the registration key code. A transmission code is produced by adding a predetermined code to the enciphered key code and the transmission code signal is transmitted to the receiver. This prevents easy deciphering of the key code because the key code is transmitted in a state enciphered.