CODE CONFIRMATION STRUCTURE AND KEY DEVICE USING SAME

摘要

PROBLEM TO BE SOLVED: To early and securely confirm a key and improve the starting property by detecting the header part from a receive signal by a receiver side controller and transferring so as to synchronize therewith and collating the ID code part. ;SOLUTION: This structure is provided with a controller connected to the ON-position of a key cylinder side to trim the signals from a transmitter and receive only the whole length predetermined and store in a memory and further, confirm whether the signals can synchronize with transmitting signals and these are Manchester-coded. When the signals are not synchronized like a pattern (b) although the header is almost in the foremost position, one bit of the foremost or tail part is transferred to the foremost or tail part to synchronize with the signals like a pattern (a) and collate the ID code part after retrieval of the header part. When the signals are received from the middle of the ID code part like a pattern (c), after the header part is retrieved at first, the front and tail end parts are transferred to synchronize therewith, the ID code part is collated. Since the signal is processed in an extremely high speed, a key can be rapidly and securely confirmed.;COPYRIGHT: (C)1999,JPO