SE7907317L - SETTING AND DEVICE FOR DIGITAL ANALOG CONVERSION - Google Patents
SETTING AND DEVICE FOR DIGITAL ANALOG CONVERSIONInfo
- Publication number
- SE7907317L SE7907317L SE7907317A SE7907317A SE7907317L SE 7907317 L SE7907317 L SE 7907317L SE 7907317 A SE7907317 A SE 7907317A SE 7907317 A SE7907317 A SE 7907317A SE 7907317 L SE7907317 L SE 7907317L
- Authority
- SE
- Sweden
- Prior art keywords
- counter
- memory
- place value
- bit outputs
- bits
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/66—Digital/analogue converters
- H03M1/82—Digital/analogue converters with intermediate conversion to time interval
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Analogue/Digital Conversion (AREA)
Abstract
For digital-analog conversion, bit outputs, which do not correspond to each other by place value at least in one group, of a counter (Z) which is affected by a count pulse sequence, are continuously compared to a number memory (Sp) which contains a digital value. The time which elapses from an initial state of the counter (Z) to the moment when the two numerical values become equal defines the mark-space ratio of a pulse signal. All the bit outputs of the counter (Z) are displaced, relative to the bit outputs of the memory (Sp) which are compared with them, in the direction of increasing place value on the memory side, and by a preset number of bits. Therefore, bit outputs of the counter (Z) at its highest place value end are opposite bit outputs of the memory (Sp) at its lowest place value end in the given number. An increment is added to the bits which follow the lowest place value bits of the memory (Sp) on each pass of the counter (Z), provided that the numeric value which is present at the lowest place value bit outputs of the memory (Sp) is greater than the instantaneous content, of the highest place value bits of the counter (Z), which is compared with it. <IMAGE>
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2838839A DE2838839C2 (en) | 1978-09-06 | 1978-09-06 | Process for converting a digital value into an analog value and digital-to-analog converter for carrying out the process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE7907317L true SE7907317L (en) | 1980-03-07 |
| SE440430B SE440430B (en) | 1985-07-29 |
Family
ID=6048815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7907317A SE440430B (en) | 1978-09-06 | 1979-09-03 | PROCEDURE AND DEVICE FOR CONVERTING A DIGITAL VALUE TO ANALOGUE |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS5539499A (en) |
| CH (1) | CH646823A5 (en) |
| DE (1) | DE2838839C2 (en) |
| SE (1) | SE440430B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57155833A (en) * | 1981-03-23 | 1982-09-27 | Toshiba Corp | Digital-to-analog converting circuit |
| JPS57155834A (en) * | 1981-03-23 | 1982-09-27 | Toshiba Corp | Digital-to-analog converting circuit |
| JPS6436118A (en) * | 1987-07-31 | 1989-02-07 | Mazda Motor | Digital pulse width modulator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2317851B2 (en) * | 1973-04-10 | 1975-04-24 | Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig, 8510 Fuerth | Digital-to-analog converter |
| NL182116C (en) * | 1975-04-08 | 1988-01-04 | Philips Nv | DIGITAL ANALOGUE CONVERTER AND A TELEVISION RECEIVER WITH A TUNING SWITCH CONTAINING THE DIGITAL ANALOGUE CONVERTER. |
-
1978
- 1978-09-06 DE DE2838839A patent/DE2838839C2/en not_active Expired
-
1979
- 1979-08-30 CH CH786679A patent/CH646823A5/en not_active IP Right Cessation
- 1979-09-03 SE SE7907317A patent/SE440430B/en not_active IP Right Cessation
- 1979-09-06 JP JP11469079A patent/JPS5539499A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| SE440430B (en) | 1985-07-29 |
| DE2838839C2 (en) | 1983-03-03 |
| DE2838839A1 (en) | 1980-03-13 |
| CH646823A5 (en) | 1984-12-14 |
| JPS6243572B2 (en) | 1987-09-16 |
| JPS5539499A (en) | 1980-03-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NUG | Patent has lapsed |
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