Cryptography – Key management – Having particular key generator
Patent
1989-05-30
1991-07-09
Gregory, Bernarr E.
Cryptography
Key management
Having particular key generator
358 86, 358174, 455 3, 455 6, H04N 716
Patent
active
050312138
ABSTRACT:
A CATV terminal unit includes a channel converter for selecting and down-converting a designated channel, a sound volume adjusting section for electronically adjusting the sound volume of a received signal of the channel selected by the channel converter, a power on-off device for turning power on and off, a switch circuit turned on and off in association with the turning-on and turning-off operations of the power by the power on-off device and for controlling an output of AC power from an outlet for television power, and a programmable timer device for allowing a set channel to be received by turning on the power at a set time. The CATV terminal unit further includes a power on-off detecting device for detecting the turning-on and turning-off states of the power when a time set by the programmable timer device has been reached; and a sound volume control device for supplying a control signal for adjusting the sound volume of the sound volume adjusting section to a predetermined level when the turning-off state of the power is detected by the power on-off detecting device.
REFERENCES:
patent: 4081832 (1978-03-01), Sherman
patent: 4718086 (1988-01-01), Rumreich et al.
Gregory Bernarr E.
Pioneer Electronic Corporation
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