US PATENT SUBCLASS 386 / 26
.~ Frequency modulation for recording on the same track

Current as of: June, 1999
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386 /   HD   TELEVISION SIGNAL PROCESSING FOR DYNAMIC RECORDING OR REPRODUCING

1  DF  PROCESSING OF COLOR TELEVISION SIGNAL FOR DYNAMIC RECORDING OR REPRODUCING {25}
26.~ Frequency modulation for recording on the same track {3}
27  DF  .~.~> Compressing when recording or decompressing when reproducing
28  DF  .~.~> Phase shifting
29  DF  .~.~> Having another signal

DEFINITION

Classification: 386/26

Frequency modulation for recording on the same track:

(under subclass 1) Subject matter wherein components of the color television signal (e.g., luminance or chrominance), which occupy different frequency bands, are processed using specific frequency modulator or demodulator circuitry and are added for recording purpose.

(1) Note. The specific frequency modulator or demodulator circuitry includes, for example, frequency mixer, converter, or shifter.

SEE OR SEARCH CLASS

332, Modulators,

117+, and 144+ for frequency or phase modulator, per se.

340, Communications: Electrical,

825.70, and 825.71+ for phase and frequency responsive selective systems and subclasses 870.18+ for frequency or phase modulated telemetry systems.

348, Television, 724, for modulating television signal.

370, Multiplex Communications,

12, for phase modulation multiplex communication.

375, Pulse or Digital Communications,

271+, 302+, and 322+ for frequency or phase modulated carrier wave pulse or digital communications.