Arrangement for combining video and audio signals for application to a transmitting antenna or other utilization device
CA 1203315 A · Owner: Rca Corporation · Inventors: Clark, Raymond N.; Schmitz, Anthony N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
RCA 79,040 CANADA, ABSTRACT OF THE DISCLOSURE A televison transmitter uses a diplexer to combine the signals from a visual power amplifier and an aural power amplifier. The diplexer uses hybrids coupled together by transmission lines, and the transmission-lines have aural frequency cavities which reflect the aural energy from the aural input to the output port for application to an antenna or other utilization device. In the event that the aural power amplifier fails, it is desirable to revert to multiplexed operation, in which the visual amplifier amplifies combined visual and aural signals. This mode of operation is accomplished by switching the low-level aural signal for combining with …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted April 15, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 15, 2003.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.