Television monitor

Details Television monitor Television monitor

1981-09-29

1984-11-20

Martin, John C.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358188, H04N 544

Patent

active

044842201

ABSTRACT:
A monitor for restricting the operating time of electronic apparatus, such as a television set, is formed of an outer case of sufficiently small size to set atop a television set. The case includes on its outer surface a display of the time remaining of the predetermined operating time. The case also includes a chamber for enclosing time setting controls, the chamber having a locking cover for securing the controls from tampering by children. A slot in a wall of the chamber permits passing of a power cord of a television into the chamber while preventing the egress of the plug of the cord upon a locking of the cover to the chamber. A timer and power sensor within the case to measure the amount of time that power flows into the television, such power flow being an indication of operating time. A relay within the case switches off the power upon detection of a timing signal indicating conclusion of the predetermined operating time.

REFERENCES:
patent: 2855993 (1958-10-01), Rahmel
patent: 3159792 (1964-12-01), Metz
patent: 3833779 (1974-09-01), Leone
patent: 3979601 (1976-09-01), Franklin
patent: 4213058 (1980-07-01), Townsend
patent: 4218871 (1980-08-01), Moritani et al.
patent: 4246495 (1981-01-01), Pressman
patent: 4336464 (1982-06-01), Weber
patent: 4348696 (1982-09-01), Beier

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