Track counter

Details Track counter Track counter

1998-08-18

2000-08-01

Wambach, Margaret R.

Electrical pulse counters, pulse dividers, or shift registers: c

Applications

Counting on an object, areas having alternating physical...

377 10, 377 30, G06M 300

Patent

active

060977809

ABSTRACT:
The track counter circuit of the present invention is for counting tracks. The circuit indicates a circuit for generating a first signal indicating a first track has been crossed and a second signal indicating a second track has been crossed after the first track, a circuit for determining when a third track should have been crossed and generating a missing signal to indicate the third track, a circuit for determining a valid track period based on the first signal and the second signal, and a circuit for maintaining the valid track period when said missing signal is generated. The track counter circuit for counting tracks may use the first signal as a MIRR signal. Additionally, the second signal may be a MIRR signal.

REFERENCES:
patent: 5001732 (1991-03-01), Nomura et al.
patent: 5136440 (1992-08-01), Sidman

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