Registers – Transfer mechanism – Traveling pawl
Patent
1974-08-09
1976-02-17
Atkinson, Charles E.
Registers
Transfer mechanism
Traveling pawl
235 92CC, H03K 2130, H03K 518
Patent
active
039393330
ABSTRACT:
The method of storing, without interruption, digital signals having asynchronous transitions and reproducing these digital signals upon an expanded time scale after the occurrence of a fault.
The apparatus comprises an input counter, an output counter, an adder operated to subtract, and a latched gate by which the adder stops the output counter when the outputs of the two counters are equivalent. The least-significant-bit of the output counter comprises the output signal, which is stored in a register. A second register simultaneously stores an output from the adder which signifies that more than one pulse is stored in the input counter. After occurrence of a fault the data in the two registers are combined in a modulator for display on an oscilloscope. A complete unit typically includes several channels for simultaneous display; each channel including the apparatus described above.
REFERENCES:
patent: 3504290 (1970-03-01), Earle
patent: 3686634 (1972-08-01), Malchman et al.
patent: 3733472 (1973-05-01), Taisne
patent: 3808407 (1974-04-01), Ratz
Atkinson Charles E.
Electronic Engineering Co. of California
Lubcke Harry R.
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