Vehicle speed recorder

Details Vehicle speed recorder Vehicle speed recorder

1978-10-27

1981-02-10

Caldwell, Sr., John W.

Communications: electrical

Selective

Having indication or alarm

340670, 340706, 340799, 346 33D, G01P 110, G06F 314, G08B 2100

Patent

active

042504872

ABSTRACT:
Speed data samples from an ordinary digital speedometer are written sequentially into a number of addressed memory locations. Each new entry replaces the oldest entry then in memory. This writing process occurs only when the vehicle is moving, so the memory cannot be erased when the vehicle is at rest. The last writing address used is retained. Any stored data sample may be recalled and displayed by presenting its address. The time-before-vehicle-stop of the displayed recalled data corresponds to the sequential interval between the recalling address and the last-used writing address. In the most convenient modification, the user stepwise specifies the sequential interval and the device produces the appropriate recalling address.

REFERENCES:
patent: 3345458 (1967-10-01), Cole et al.
patent: 3835382 (1974-09-01), Weisbart
patent: 3863152 (1975-01-01), Eshraghian
patent: 3875388 (1975-04-01), Luten et al.
patent: 3928756 (1975-12-01), Auray
patent: 3968434 (1976-07-01), Dixon et al.
patent: 3982101 (1976-09-01), Kalb et al.
patent: 3991368 (1976-11-01), Powell
patent: 4000465 (1976-12-01), Sugiyama
patent: 4074196 (1978-02-01), Webster
patent: 4083052 (1978-04-01), Metcalf
patent: 4092728 (1978-05-01), Baltzer
patent: 4093916 (1978-06-01), Summer
patent: 4093939 (1978-06-01), Mitchell
patent: 4104624 (1978-08-01), Hamada
patent: 4114450 (1978-09-01), Shulman et al.
patent: 4124840 (1978-11-01), Kobayashi

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