Signal recording and playback apparatus for location monitoring

Details Signal recording and playback apparatus for location monitoring Signal recording and playback apparatus for location monitoring

1997-09-12

1999-10-26

Psitos, Aristoyelis M.

Dynamic magnetic information storage or retrieval

Recording for selective retention of a special occurrence

348143, 386 35, G11B 500, H04N 718

Patent

active

059738677

ABSTRACT:
A video camera is connected to a video signal amplifier through a video signal input terminal. The video signal amplifier is connected to the input side of an image memory through an A/D converter which converts analog video signals into image data which are digital signals. The image memory is provided with a semiconductor memory for storing video signals converted into digital signals. Thus, it becomes possible to continuously record images from before the opening of a door until after the opening of the door and to thus obtain a magnetic recording and playback apparatus of high monitoring effects.

REFERENCES:
patent: 4630110 (1986-12-01), Cotton et al.
patent: 4791499 (1988-12-01), Mester
patent: 4897732 (1990-01-01), Kinoshita et al.
patent: 4949173 (1990-08-01), Mitsuhashi
patent: 5754449 (1998-05-01), Hoshal et al.

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