Circuit for applying alpha/numeric data to a TV receiver

Details Circuit for applying alpha/numeric data to a TV receiver Circuit for applying alpha/numeric data to a TV receiver

1977-06-17

1979-01-16

Curtis, Marshall M.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

325105, 358150, 328 31, 340717, 340803, G06F 314

Patent

active

041351827

ABSTRACT:
An electrical circuit for allowing the use of a TV receiver to display alpha
umeric data includes a pair of monostable multivibrators, logic circuitry and a tri-state gate for shaping and mixing digital horizontal and vertical retrace sync signals and alpha
umeric video signals to create a properly proportioned composite thereof. The circuit further includes an oscillator for generating a RF carrier signal, a field-effect transistor (FET) coupled between the oscillator and the output of the circuit which is adapted to be coupled to the antenna terminal of the TV receiver, and an emitter-follower device which feeds the composite signal to the FET for producing amplitude modulation of the RF carrier signal by the FET and transmission of the modulated signal to the TV receiver antenna terminals.

REFERENCES:
patent: 3017625 (1962-01-01), Evans et al.
patent: 3401359 (1968-09-01), Becker
patent: 3685039 (1972-08-01), Flanagan
patent: 3822363 (1974-07-01), Meyer et al.
patent: 3946147 (1976-03-01), Camras
patent: 4026555 (1977-05-01), Kirschner et al.
patent: 4034983 (1977-07-01), Dash et al.
patent: 4034990 (1977-07-01), Baer

Affiliated with

Also associated with

Rating

Circuit for applying alpha/numeric data to a TV receiver does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Circuit for applying alpha/numeric data to a TV receiver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit for applying alpha/numeric data to a TV receiver will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-654095