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. 04, 1994
Filed:
Jun. 04, 1991
Yosuke Katayama, Toride, JP;
Hitachi Maxell, Ltd., Osaka, JP;
NTT Data Communications Systems Corporation, Tokyo, JP;
Abstract
An IC recording medium for executing data transmission/reception without contact with a reader/writer. The non-contact IC recording medium comprises a first circuit for detecting a synchronization (sync) signal sent from a reader/writer to generate a first clock signal, a second circuit for generating a second clock signal having a predetermined frequency relationship with the clock signal for driving the data processing in a signal processing circuit incorporated therein, a third circuit for writing m (where m is an integer of 2 of greater) number items of transfer information output from the signal processing circuit using the second clock signal and reading them using the first clock signal, a fourth circuit for creating an interruption signal from the start bit in at least the first transfer information in the m number of items of transfer information to place the subsequent m number of items of transfer information in a wait state, and a fifth circuit for releasing the wait state of the subsequent m number of items of information by the fourth means.