GB1301251A - - Google Patents
Info
- Publication number
- GB1301251A GB1301251A GB1301251DA GB1301251A GB 1301251 A GB1301251 A GB 1301251A GB 1301251D A GB1301251D A GB 1301251DA GB 1301251 A GB1301251 A GB 1301251A
- Authority
- GB
- United Kingdom
- Prior art keywords
- input
- signal
- analogue
- pulse width
- derived
- 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
- 238000012935 Averaging Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K7/00—Modulating pulses with a continuously-variable modulating signal
- H03K7/08—Duration or width modulation ; Duty cycle modulation
Landscapes
- Analogue/Digital Conversion (AREA)
Abstract
1301251 Analog/digital converters STANDARD TELEPHONES & CABLES Ltd 15 Jan 1971 2075/71 Heading G4H In an analogue to digital converter of the type in which the analogue input is converted to a pulse width modulated signal by comparing the input with a ramp signal derived by integrating a reference signal, the pulse width modulated signal controlling the application of pulses to a counter, the reference signal is derived either by averaging the input signal or by detecting peaks in the input. If the input is averaged the output of the comparator represents the ratio of the input signal to the average value of the input signal.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB207571*[A GB1311372A (en) | 1970-01-30 | 1971-01-15 | Photographic method for producing a cathode ray tube screen structure |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1301251A true GB1301251A (en) | 1972-12-29 |
Family
ID=9733148
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1301251D Expired GB1301251A (en) | 1971-01-15 | 1971-01-15 |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1301251A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2144287A (en) * | 1983-07-22 | 1985-02-27 | Nat Res Dev | Analog-to-digital converters for seismometers |
-
1971
- 1971-01-15 GB GB1301251D patent/GB1301251A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2144287A (en) * | 1983-07-22 | 1985-02-27 | Nat Res Dev | Analog-to-digital converters for seismometers |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |