Magnetic recording apparatus for recording video and two kinds of audio signals
CA 1319191 C · Owner: Matsushita Electric Industrial Co. Ltd. · Inventors: Hitotsumachi, Shuzo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A recording and reproducing apparatus includes three groups of magnetic heads. A sound signal is converted into a corresponding frequency-modulated signal and is also converted into a correspoding digital signal. The frequency-modulated sound signal is recorded into and reproduced from a magnetic tape via the first group of magnetic heads. The digital sound signal is converted into a corresponding quadrature phase shift keying signal. The quadrature phase shift keying sound signal is recorded into and reproduced from the magnetic tape via the second group of magnetic heads. A video signal is recorded into and reproduced from the magnetic tape via the third group of magnetic heads.
Read the whole patent
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 June 15, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 15, 2010.
- 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.