Method and apparatus for interacting with television images

Details Method and apparatus for interacting with television images Method and apparatus for interacting with television images

1986-04-11

1988-04-19

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 22, 358 93, H04N 5272

Patent

active

047394064

ABSTRACT:
Apparatus for use with a standard television (TV) receiver for superimposing information or images over portions of the broadcast scene. Scynchronization signals are generated by locking onto the horizontal sweep electromagnetic interference (EMI) generated by all television receivers. A wideband noise (RF) burst is generated and coupled to the antenna input leads of the television receiver. The picture content of the TV scene at the time of the noise burst is disrupted and various effects are created by controlling the level of the noise bursts. By controlling the position of the RF noise, an image may be created and superimposed over any part(s) of the scene. The scene may be derived from any source, such as standard television broadcast, a video cassette recorder (VCR), electronic game or computer monitor. No modification of the television receiver is required, and no change to the apparatus is needed when the TV is tuned from one broadcast channel to another.

REFERENCES:
patent: 3809395 (1974-05-01), Allison, Jr.
patent: 3944731 (1976-03-01), Busch
patent: 4172264 (1979-10-01), Taylor
patent: 4305131 (1981-12-01), Best
patent: 4346407 (1982-08-01), Baer
patent: 4355332 (1982-10-01), Beeson
Putting an Arrow on TV, by M. K. Cook, Wireless World, Jun. 1979, pp. 67-71.

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