NL7109899A - - Google Patents
Info
- Publication number
- NL7109899A NL7109899A NL7109899A NL7109899A NL7109899A NL 7109899 A NL7109899 A NL 7109899A NL 7109899 A NL7109899 A NL 7109899A NL 7109899 A NL7109899 A NL 7109899A NL 7109899 A NL7109899 A NL 7109899A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/30—Systems using multi-frequency codes wherein each code element is represented by a combination of frequencies
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/02—Digital function generators
- G06F1/03—Digital function generators working, at least partly, by table look-up
- G06F1/035—Reduction of table size
- G06F1/0353—Reduction of table size by using symmetrical properties of the function, e.g. using most significant bits for quadrant control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/26—Devices for calling a subscriber
- H04M1/30—Devices which can set up and transmit only one digit at a time
- H04M1/50—Devices which can set up and transmit only one digit at a time by generating or selecting currents of predetermined frequencies or combinations of frequencies
- H04M1/505—Devices which can set up and transmit only one digit at a time by generating or selecting currents of predetermined frequencies or combinations of frequencies signals generated in digital form
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
- H04Q1/457—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals
- H04Q1/4575—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals which are transmitted in digital form
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Complex Calculations (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Analogue/Digital Conversion (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7026552A FR2098528A5 (US06168776-20010102-C00028.png) | 1970-07-17 | 1970-07-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL7109899A true NL7109899A (US06168776-20010102-C00028.png) | 1972-01-19 |
Family
ID=9058860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7109899A NL7109899A (US06168776-20010102-C00028.png) | 1970-07-17 | 1971-07-16 |
Country Status (12)
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2286552A1 (fr) * | 1974-09-30 | 1976-04-23 | Roche Bernard | Generateur numerique de signaux du code a multifrequences |
| FR2296319A1 (fr) * | 1974-12-27 | 1976-07-23 | Cit Alcatel | Dispositif a fonctionnement numerique pour la generation d'ondes periodiques |
| US4058805A (en) * | 1975-06-16 | 1977-11-15 | Comdial Corporation | Digital multitone generator for telephone dialing |
| US4070665A (en) * | 1976-05-27 | 1978-01-24 | The Singer Company | High accuracy digital to analog resolver converter |
| DE2906471A1 (de) * | 1979-02-20 | 1980-08-28 | Siemens Ag | Schaltungsanordnung zur sequentiellen erzeugung der funktionswerte mehrerer schwingungen, deren folgefrequenzen n-fache einer grundschwingung sind |
| FR2474785A1 (fr) * | 1980-01-09 | 1981-07-31 | Cit Alcatel | Dispositif de controle d'un generateur numerique de signaux |
| DE3323608A1 (de) * | 1983-06-30 | 1985-01-17 | Siemens AG, 1000 Berlin und 8000 München | Verfahren zur unterdrueckung von quantisierungsgeraeuschen bei der uebertragung sinusfoermiger hoertoene in einem digitalen fernmeldesystem |
| JPS60254097A (ja) * | 1984-05-30 | 1985-12-14 | カシオ計算機株式会社 | 歪波形発生装置 |
| US5237324A (en) * | 1991-09-04 | 1993-08-17 | Advanced Micro Devices, Inc. | System and method for producing baseband analog modulation signals |
| FR2766288B1 (fr) | 1997-07-15 | 1999-10-01 | Elva Sa | Procede et systeme de transmission sous forme vocale d'une sequence de donnees binaires a partir d'un transducteur piezo-electrique |
| JP3758849B2 (ja) * | 1998-04-28 | 2006-03-22 | ローム株式会社 | データ変換装置 |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3215860A (en) * | 1962-11-23 | 1965-11-02 | Epsco Inc | Clock pulse controlled sine wave synthesizer |
| US3206554A (en) * | 1962-11-26 | 1965-09-14 | Bell Telephone Labor Inc | Information verification circuit |
| US3301967A (en) * | 1963-09-11 | 1967-01-31 | American Telephone & Telegraph | Automatic call transmitter for repertory dialing using multifreqency pulses |
| US3334190A (en) * | 1964-07-09 | 1967-08-01 | Bell Telephone Labor Inc | Centralized repertory system for multifrequency signaling telephones |
| US3398241A (en) * | 1965-03-26 | 1968-08-20 | Ibm | Digital storage voice message generator |
| US3497625A (en) * | 1965-07-15 | 1970-02-24 | Sylvania Electric Prod | Digital modulation and demodulation in a communication system |
| FR1496141A (fr) * | 1966-06-03 | 1967-09-29 | Cit Alcatel | Générateur d'ondes modulées en fréquence |
| GB1225142A (US06168776-20010102-C00028.png) * | 1967-11-29 | 1971-03-17 | ||
| US3647973A (en) * | 1967-12-04 | 1972-03-07 | Peter James | Computer system utilizing a telephone as an input device |
| GB1236961A (en) * | 1968-01-12 | 1971-06-23 | Gen Electric Co Ltd | Improvements in or relating to electric impulse transmitters |
| US3588353A (en) * | 1968-02-26 | 1971-06-28 | Rca Corp | Speech synthesizer utilizing timewise truncation of adjacent phonemes to provide smooth formant transition |
| US3575555A (en) * | 1968-02-26 | 1971-04-20 | Rca Corp | Speech synthesizer providing smooth transistion between adjacent phonemes |
| CH483176A (de) * | 1968-10-22 | 1969-12-15 | Siemens Ag Albis | Anordnung zur Einspeisung von Hörzeichen in Zeitmultiplex-PCM-Vermittlungsanlagen |
| US3697703A (en) * | 1969-08-15 | 1972-10-10 | Melville Clark Associates | Signal processing utilizing basic functions |
| US3665113A (en) * | 1969-08-25 | 1972-05-23 | North Electric Co | Telephone repertory dialer |
| US3772681A (en) * | 1970-10-14 | 1973-11-13 | Post Office | Frequency synthesiser |
-
1970
- 1970-07-17 FR FR7026552A patent/FR2098528A5/fr not_active Expired
-
1971
- 1971-07-05 CH CH988171A patent/CH541901A/fr not_active IP Right Cessation
- 1971-07-05 BE BE769484A patent/BE769484A/xx unknown
- 1971-07-13 DE DE2134933A patent/DE2134933C2/de not_active Expired
- 1971-07-15 GB GB3335971A patent/GB1354931A/en not_active Expired
- 1971-07-15 HU HU71SO1010A patent/HU176883B/hu unknown
- 1971-07-16 NL NL7109899A patent/NL7109899A/xx not_active Application Discontinuation
- 1971-07-16 CA CA118,480A patent/CA972091A/en not_active Expired
- 1971-07-16 CS CS5262A patent/CS167936B2/cs unknown
- 1971-07-16 SE SE09235/71A patent/SE367743B/xx unknown
- 1971-07-17 ES ES393395A patent/ES393395A1/es not_active Expired
- 1971-07-19 US US163607A patent/US3905030A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CH541901A (fr) | 1973-09-15 |
| CS167936B2 (US06168776-20010102-C00028.png) | 1976-05-28 |
| ES393395A1 (es) | 1973-08-16 |
| BE769484A (fr) | 1972-01-05 |
| US3905030A (en) | 1975-09-09 |
| CA972091A (en) | 1975-07-29 |
| GB1354931A (en) | 1974-06-05 |
| DE2134933A1 (de) | 1972-01-27 |
| FR2098528A5 (US06168776-20010102-C00028.png) | 1972-03-10 |
| DE2134933C2 (de) | 1986-07-03 |
| AU3133171A (en) | 1973-01-18 |
| SE367743B (US06168776-20010102-C00028.png) | 1974-06-04 |
| HU176883B (en) | 1981-05-28 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| BB | A search report has been drawn up | ||
| BC | A request for examination has been filed | ||
| BI | The patent application has been withdrawn |