GB1211755A - Analog-to-digital conversion system - Google Patents
Analog-to-digital conversion systemInfo
- Publication number
- GB1211755A GB1211755A GB00281/68A GB1028168A GB1211755A GB 1211755 A GB1211755 A GB 1211755A GB 00281/68 A GB00281/68 A GB 00281/68A GB 1028168 A GB1028168 A GB 1028168A GB 1211755 A GB1211755 A GB 1211755A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gate
- integrator
- analogue
- period
- counter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
- H03M1/124—Sampling or signal conditioning arrangements specially adapted for A/D converters
Abstract
1,211,755. Analogue/digital converters. WESTINGHOUSE ELECTRIC CORP. 4 March, 1968 [20 March, 1967], No. 10281/68. Heading G4H. In an analogue-to-digital converter, an analogue input signal is integrated for a time dependent on the period of a power waveform, the integrator 30 (Fig. 4) being discharged at a rate dependent on the integrating period so that noise caused by e.g. induction from nearby power lines is eliminated. In the embodiment described, control 10 initially opens a gate 20 for a time dependent on the period of the power waveform so that the integrator 30 is charged up, a gate 42 also being enabled for this time interval to pass clock pulses to a counter 46. The accumulated count is then transferred to a calibrate buffer 54 and digital/analogue converter 56, the output from which is fed via reference sampling gate 60 to discharge the integrator 30 at a rate which thus depends on the integration period. When the gate 60 is enabled the gate 42 is again enabled to pass pulses to counter 46 until the integrator 30 is discharged when a detector 44 closes the gate 42. The count in counter 46 is read out to computer 70.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US62430267A | 1967-03-20 | 1967-03-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1211755A true GB1211755A (en) | 1970-11-11 |
Family
ID=24501462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB00281/68A Expired GB1211755A (en) | 1967-03-20 | 1968-03-04 | Analog-to-digital conversion system |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE712368A (en) |
| FR (1) | FR1558122A (en) |
| GB (1) | GB1211755A (en) |
| SE (1) | SE336602B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7485398B2 (en) * | 2006-06-22 | 2009-02-03 | Xerox Corporation | Titanyl phthalocyanine photoconductors |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2129988B1 (en) * | 1971-03-25 | 1974-09-27 | Telemecanique Electrique | |
| CA1146276A (en) * | 1978-09-05 | 1983-05-10 | Francis M. Jobbagy | Analog-to-digital converter apparatus for condition responsive transducer |
-
1968
- 1968-03-04 GB GB00281/68A patent/GB1211755A/en not_active Expired
- 1968-03-18 BE BE712368D patent/BE712368A/xx unknown
- 1968-03-19 FR FR1558122D patent/FR1558122A/fr not_active Expired
- 1968-03-20 SE SE03733/68A patent/SE336602B/xx unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7485398B2 (en) * | 2006-06-22 | 2009-02-03 | Xerox Corporation | Titanyl phthalocyanine photoconductors |
Also Published As
| Publication number | Publication date |
|---|---|
| SE336602B (en) | 1971-07-12 |
| FR1558122A (en) | 1969-02-21 |
| BE712368A (en) | 1968-07-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |