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:
Apr. 06, 1976
Filed:
May. 28, 1974
Applicant:
Inventors:
Tomoo Tamada, Tama, JA;
Takeshi Kato, Funabashi, JA;
Assignee:
Tokyo Magnetic Printing Company Ltd., Tokyo, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
329106 ; 328111 ; 329126 ; 360 25 ;
Abstract
A demodulation system for digital information, recorded by an FM or PM system, which provides a clock output pulse whose pulse width is proportional to the time length of the preceding bit frame and said clock output signal is utilized for demodulating the recorded data. Said pulse width can be controlled either by an analog or a digital circuit and thus, the present invention has the advantage that the information is demodulated stably though the moving speed of the recording medium is changed or deviated.