Static information storage and retrieval – Plural shift register memory devices
Patent
1980-04-09
1983-04-26
Fears, Terrell W.
Static information storage and retrieval
Plural shift register memory devices
365244, 346 33EC, 364569, 368 6, 377 19, G11C 1300
Patent
active
043815553
ABSTRACT:
Apparatus is described for recording certain operating conditions of a motor vehicle, those conditions occurring upon the braking of the vehicle, and the apparatus is particularly applicable to vehicles equipped with antilock braking systems. A shift register is controlled by an oscillator in continuously shifting operation. When a predetermined driving condition occurs, the state of the first register location is changed. In the event the device is used for recording a braking condition, there is provided a time delay switch which locks the shift register at the point it has reached when a predetermined delay time is exceeded. The aforementioned shift register can be constructed in the form of an electromechanical shift register which responds to a signal generated through the operation of a stop lamp switch.
REFERENCES:
patent: 2787418 (1957-04-01), MacKnight
Audi NSU Auto Union Aktiengesellschaft
Fears Terrell W.
Lett Gerald L.
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