GB1498369A - Circuit for the conversion of a digital signal to a stochastic signal - Google Patents
Circuit for the conversion of a digital signal to a stochastic signalInfo
- Publication number
- GB1498369A GB1498369A GB13677/76A GB1367776A GB1498369A GB 1498369 A GB1498369 A GB 1498369A GB 13677/76 A GB13677/76 A GB 13677/76A GB 1367776 A GB1367776 A GB 1367776A GB 1498369 A GB1498369 A GB 1498369A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stochastic
- numbers
- bits
- converter
- significant
- 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
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
- H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
- H03J5/0245—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form
- H03J5/0254—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form the digital values being transfered to a D/A converter
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
- G06F7/60—Methods or arrangements for performing computations using a digital non-denominational number representation, i.e. number representation without radix; Computing devices using combinations of denominational and non-denominational quantity representations, e.g. using difunction pulse trains, STEELE computers, phase computers
- G06F7/70—Methods or arrangements for performing computations using a digital non-denominational number representation, i.e. number representation without radix; Computing devices using combinations of denominational and non-denominational quantity representations, e.g. using difunction pulse trains, STEELE computers, phase computers using stochastic pulse trains, i.e. randomly occurring pulses the average pulse rates of which represent numbers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/04—Analogue/digital conversion; Digital/analogue conversion using stochastic techniques
-
- 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)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computing Systems (AREA)
- Computational Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Mathematical Physics (AREA)
- Pure & Applied Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Analogue/Digital Conversion (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
1498369 Digital to stochastic converter; TV receiver station selection PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 5 April 1976 [8 April 1975] 13677/76 Headings H3H and H3Q In a digital to stochastic converter the n-bit input is compared at 1 to a periodically recurring series of n-digit numbers C, in which series the m most significant digits form a number D which increases or decreases monotonically to a maximum or minimum repetitively and the n-m other digits are the reverse order of a further number which increases or decreases monotonically at every D cycle, the numbers having constraints n#m, m > 1 n#3. In the embodiment the numbers C are generated by an n-bit counter B with its m least significant bits being compared with the m most significant input bits, the remaining n-m bits being reversely presented to the remaining comparator inputs. The stochastic output has a maximum of 2<SP>n-m</SP> pulses of variable width which may be converted to analogue by a low pass filter. The converter is also described in relation to a timing circuit for a television receiver where the derived analogue voltage is applied to the tuning signal input of a tuning circuit. The tuning signal is selected by a bi-directional counter (11, Fig. 3, not shown) including three integrated 4-bit counters.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NLAANVRAGE7504147,A NL182116C (en) | 1975-04-08 | 1975-04-08 | DIGITAL ANALOGUE CONVERTER AND A TELEVISION RECEIVER WITH A TUNING SWITCH CONTAINING THE DIGITAL ANALOGUE CONVERTER. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1498369A true GB1498369A (en) | 1978-01-18 |
Family
ID=19823528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13677/76A Expired GB1498369A (en) | 1975-04-08 | 1976-04-05 | Circuit for the conversion of a digital signal to a stochastic signal |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JPS51123501A (en) |
| AU (1) | AU509802B2 (en) |
| BE (1) | BE840430A (en) |
| CA (1) | CA1089097A (en) |
| DE (1) | DE2614751C3 (en) |
| FR (1) | FR2307401A1 (en) |
| GB (1) | GB1498369A (en) |
| IT (1) | IT1057843B (en) |
| NL (1) | NL182116C (en) |
| NZ (1) | NZ180514A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2838839C2 (en) * | 1978-09-06 | 1983-03-03 | Siemens AG, 1000 Berlin und 8000 München | Process for converting a digital value into an analog value and digital-to-analog converter for carrying out the process |
| DE3043727A1 (en) * | 1980-11-20 | 1982-06-24 | BBC Aktiengesellschaft Brown, Boveri & Cie., 5401 Baden, Aargau | METHOD FOR PERIODICALLY CONVERTING A DIGITAL VALUE TO ANALOG VALUE |
| JPS57155834A (en) * | 1981-03-23 | 1982-09-27 | Toshiba Corp | Digital-to-analog converting circuit |
| JPS57155833A (en) * | 1981-03-23 | 1982-09-27 | Toshiba Corp | Digital-to-analog converting circuit |
| JPH0461937U (en) * | 1990-10-05 | 1992-05-27 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2027015A1 (en) * | 1969-06-02 | 1970-12-10 | Societe Generale de Constructions Electriques et Mecaniques, Alsthom, Paris | Process for converting an electrical analog signal into a numerical signal and vice versa and circuit for carrying out the process |
| DE2317851B2 (en) * | 1973-04-10 | 1975-04-24 | Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig, 8510 Fuerth | Digital-to-analog converter |
-
1975
- 1975-04-08 NL NLAANVRAGE7504147,A patent/NL182116C/en not_active IP Right Cessation
-
1976
- 1976-04-01 CA CA249,391A patent/CA1089097A/en not_active Expired
- 1976-04-05 GB GB13677/76A patent/GB1498369A/en not_active Expired
- 1976-04-05 AU AU12644/76A patent/AU509802B2/en not_active Expired
- 1976-04-05 IT IT67782/76A patent/IT1057843B/en active
- 1976-04-05 NZ NZ180514A patent/NZ180514A/en unknown
- 1976-04-06 BE BE165881A patent/BE840430A/en not_active IP Right Cessation
- 1976-04-06 DE DE2614751A patent/DE2614751C3/en not_active Expired
- 1976-04-07 FR FR7610080A patent/FR2307401A1/en active Granted
- 1976-04-07 JP JP51038329A patent/JPS51123501A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS51123501A (en) | 1976-10-28 |
| IT1057843B (en) | 1982-03-30 |
| CA1089097A (en) | 1980-11-04 |
| BE840430A (en) | 1976-10-06 |
| AU509802B2 (en) | 1980-05-22 |
| NL182116C (en) | 1988-01-04 |
| NL7504147A (en) | 1976-10-12 |
| FR2307401B1 (en) | 1981-09-04 |
| AU1264476A (en) | 1977-10-13 |
| DE2614751C3 (en) | 1981-07-16 |
| DE2614751A1 (en) | 1976-10-21 |
| NL182116B (en) | 1987-08-03 |
| JPS5626176B2 (en) | 1981-06-17 |
| FR2307401A1 (en) | 1976-11-05 |
| NZ180514A (en) | 1978-06-02 |
| DE2614751B2 (en) | 1980-08-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |