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:
Jul. 12, 1977
Filed:
Mar. 16, 1976
Giovanpietro Bassani, Milan, IT;
Giuseppe Scozzari, Milan, IT;
Abstract
A cable-TV system comprises a relay station linked by several HF cables with a distribution center feeding several subscriber stations via two-wire local lines, each HF cable carrying a respective TV program modulated on a common carrier. The distribution center comprises several switching matrices which are remote-controlled from respective subscriber stations for transmitting selected programs to any of them. Each subscriber station includes for this purpose a generator of a carrier frequency, above the band of incoming frequencies, which is pulse-modulated with the aid of a keyboard to identify the desired programs and is demodulated at a control unit tied to the associated switching matrix at the distribution center.