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. 06, 1981
Filed:
Mar. 13, 1978
Applicant:
Inventor:
John M Vandling, Pleasantville, NY (US);
Assignee:
Exxon Research & Engineering Co., Florham Park, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ;
U.S. Cl.
CPC ...
358257 ;
Abstract
The receiver of a facsimile system includes a modulator for generating a signal for transmission to a remote transmitting location to identify a characteristic of the receiver. The signal from the receiver varies between a first frequency which is contiguous with and immediately precedes a second frequency. By utilizing different first frequencies to characterize different types of receivers, the transmitter at the remote location is able to identify the type of receiver including, for example, the demodulating capabilities of the receiver.