Digital movement recording apparatus with reduced memory consump

Details Digital movement recording apparatus with reduced memory consump Digital movement recording apparatus with reduced memory consump

1991-03-06

1993-06-08

Lall, Parshotam S.

Boots, shoes, and leggings

3649253, 360 5, 368 8, G06F 1300

Patent

active

052185435

ABSTRACT:
A digital movement data recording apparatus which controls reduction of an available portion of a record medium, particularly of an ID record area of a record medium, to increase the period of time over which movement data can be recorded. The apparatus comprises time counting means for starting counting of a time in response to ending of a movement of the vehicle, judging means for judging, in response to starting of a movement of the vehicle, whether or not the counted time remains within a predetermined range, and erasing means for erasing, when the counted time remains within the predetermined range, last time data recorded in a movement data record area of the record medium and representative of an ending time of a movement of the vehicle and address data recorded in the ID record area of the record medium and representative of the address of the movement data record area of the record medium at which the last time data are recorded. Accordingly, even if ending of a movement is detected by a large number of times in a short period of time, data regarding such movements are not maintained in the record medium.

REFERENCES:
patent: 4258421 (1981-03-01), Juhasz et al.
patent: 4685061 (1987-08-01), Whitaker
patent: 4853856 (1989-08-01), Honway
patent: 4853859 (1989-08-01), Morita et al.
patent: 4939652 (1990-07-01), Steiner
patent: 5046007 (1991-09-01), McCrery et al.

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