| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 1 | Pulse count conversion device using decimal adder-subtracter | US3602698D | 1968-06-17 | US3602698A | 1971-08-31 | VIGOUR HERVEY E |
| A conversion device for converting a train of electric signal pulses indicative of a given quantity, such as position, into a count of standard units of measure. The conversion device comprises a digitally operable, reversible counter and register having digitally operable adder-subtracter circuit means for adding positive or negative increments of count to the register for each input electric signal pulse as determined by the sign of the input electric signal pulses. The overflow from the register is applied to a reversible counter. Each increment of count is proportional to a standard conversion factor for converting the input train of pulses into a count of standard measurement units such as inches or centimeters. The reversible counter preferably comprises a digital decimal counter. The stages of the register are preferably comprised by binary arithmetic stages and the most significant binary stage supplied its overflow count to the least significant decimal stage of the counter as a standard decimal incremental input. The train of input pulses indicative of a quantity to be measured may comprise the output signal pulses of an interferometer position measuring device, and the standard conversion factor added to or subtracted from the reversible counter for each incremental input pulse may be a value representative of the spacing in microinches or micrometers between the fringe count pulses produced by the interferometer position measuring device.
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| 2 | Method for dynamic controlling of magnetic core register | US3546679D | 1968-05-08 | US3546679A | 1970-12-08 | YOKOYAMA AKIRA; NEYA HARUNAGA; YOSHIMUNE YOSHINORI; TOMABECHI NOBUHIRO; IMAI TOSHIO |
| 3 | Subtracting and dividing computer | US41058364 | 1964-11-12 | US3308281A | 1967-03-07 | OFFLEY CROWTHER GERALD; CHARLES DELI GEORGE |
| 4 | Adding and multiplying computer | US41058264 | 1964-11-12 | US3308280A | 1967-03-07 | OFFLEY CROWTHER GERALD; CHARLES DELI GEORGE |
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