Signal monitoring system with failsafe back-up capability

Dynamic magnetic information storage or retrieval – Recording or reproducing an information signal and a control...

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Details

360 31, 360 53, 360 63, 369 47, G11B 502, G11B 2736, G11B 1512

Patent

active

048644323

ABSTRACT:
A multichannel communications recorder with capability to display channel activity, failsafe back-up, and a unique identification code; and apparatus for securing access to the recorder. The recorder is formed from modular elements configurable into a large number of selectable configurations. One or more record decks are controlled by a control module which includes a system control microprocessor and a CRT control microprocessor. Control is provided by selecting functions defined in accordance with a displayed page or moving to another page using softkeys. Access to various pages is controlled by various passwords. Because of the need to provide physical security for recorded tapes, each tape deck is secured by an electro-mechanical lock, which operates under system control. The system is provided with the capability to be configured in configuration providing back-up for selected channels. The system controller transfers the recording function from a primary to a back-up record deck in response to an error condition. Also, in the event of a failure of the system controller, a local controller may initiate transfer to a back-up record deck using a hardwired connection. The CRT can display the status of each channel monitored. The recorder also records a time code and a unique machine identification number on each tape. The machine number may be changed by one-time password obtained from the system manufacturer.

REFERENCES:
patent: 3643243 (1972-02-01), Johnson et al.
patent: 3869707 (1975-08-01), Cupp
patent: 4011586 (1977-03-01), Pastor et al.
patent: 4203137 (1980-05-01), Beck et al.

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