GB1518110A - Analogue to digital converters - Google Patents
Analogue to digital convertersInfo
- Publication number
- GB1518110A GB1518110A GB39846/75A GB3984675A GB1518110A GB 1518110 A GB1518110 A GB 1518110A GB 39846/75 A GB39846/75 A GB 39846/75A GB 3984675 A GB3984675 A GB 3984675A GB 1518110 A GB1518110 A GB 1518110A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reference signal
- analogue
- reached
- level
- integrated
- 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
- H03M1/50—Analogue/digital converters with intermediate conversion to time interval
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Analogue/Digital Conversion (AREA)
Abstract
1518110 Analogue-to-digital conversion DATRON ELECTRONICS Ltd 20 Oct 1976 [29 Sept 1975] 39846/75 Heading H3H In a dual ramp analogue-to-digital converter, the return ramp is in two sections, a reference signal being integrated at 12 until the first clock pulse after a predetermined level A has been reached, and then a fraction of the reference signal is integrated until the datum level is reached, clock pulses counted in the second section being given a corresponding fractional weighting. As shown, a portion of the reference signal is fed forward via resistors 36, 34 to bias the comparator 30 to level A and at T 4 , Fig. 2, switch 38 closes, reducing the reference signal to <SP>1</SP>/ 10 of its value. During T2-T4 clock pulses are fed via gate 46 to the tens decade of a counter 52-50 and after T 4 via gate 44 to the units decade 52.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB39846/75A GB1518110A (en) | 1976-10-20 | 1976-10-20 | Analogue to digital converters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB39846/75A GB1518110A (en) | 1976-10-20 | 1976-10-20 | Analogue to digital converters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1518110A true GB1518110A (en) | 1978-07-19 |
Family
ID=10411812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB39846/75A Expired GB1518110A (en) | 1976-10-20 | 1976-10-20 | Analogue to digital converters |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1518110A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2235344A (en) * | 1989-08-24 | 1991-02-27 | Schlumberger Technologies Ltd | Analogue-to-digital converter |
-
1976
- 1976-10-20 GB GB39846/75A patent/GB1518110A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2235344A (en) * | 1989-08-24 | 1991-02-27 | Schlumberger Technologies Ltd | Analogue-to-digital converter |
| GB2235344B (en) * | 1989-08-24 | 1993-08-04 | Schlumberger Technologies Ltd | Analogue-to-digital converter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |