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:
May. 13, 1986
Filed:
Jun. 03, 1983
Barin G Haskell, Tinton Falls, NJ (US);
Robert L Schmidt, Wanamassa, NJ (US);
AT&T Bell Laboratories, Murray Hill, NJ (US);
Abstract
The present invention relates to a technique for the Time-Frequency-Multiplexing (TFM) of three television signals. More particularly, three fields of a TV signal are sent simultaneously to a remote receiver by transmitting one field as is in the baseband of a standard television system signal while the other two fields are transmitted as differential signals, quadrature amplitude modulated onto a subcarrier frequency above baseband. The two differential signals can comprise two field differential signals or a frame and a field differential signal. Arrangements are also provided for transmitters and receivers for implementing the present technique.