CH481528A - Detektorkreis für die Demodulation von FM-Signalen - Google Patents
Detektorkreis für die Demodulation von FM-SignalenInfo
- Publication number
- CH481528A CH481528A CH281867A CH281867A CH481528A CH 481528 A CH481528 A CH 481528A CH 281867 A CH281867 A CH 281867A CH 281867 A CH281867 A CH 281867A CH 481528 A CH481528 A CH 481528A
- Authority
- CH
- Switzerland
- Prior art keywords
- demodulation
- signals
- detector circuit
- detector
- circuit
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00095—Systems or arrangements for the transmission of the picture signal
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
- H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
- H03D3/04—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by counting or integrating cycles of oscillations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/40—Picture signal circuits
- H04N1/405—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels
- H04N1/4055—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a clustered dots or a size modulated halftone pattern
- H04N1/4056—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a clustered dots or a size modulated halftone pattern the pattern varying in one dimension only, e.g. dash length, pulse width modulation [PWM]
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Facsimiles In General (AREA)
- Electronic Switches (AREA)
- Networks Using Active Elements (AREA)
- Facsimile Image Signal Circuits (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US53544266A | 1966-03-18 | 1966-03-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH481528A true CH481528A (de) | 1969-11-15 |
Family
ID=24134247
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH281867A CH481528A (de) | 1966-03-18 | 1967-02-27 | Detektorkreis für die Demodulation von FM-Signalen |
Country Status (11)
Country | Link |
---|---|
US (1) | US3467772A (de) |
BE (1) | BE694935A (de) |
BR (1) | BR6787833D0 (de) |
CH (1) | CH481528A (de) |
DE (1) | DE1298541B (de) |
ES (1) | ES337199A1 (de) |
FR (1) | FR1513951A (de) |
GB (2) | GB1181081A (de) |
NL (1) | NL6703809A (de) |
NO (1) | NO121618B (de) |
SE (1) | SE355459B (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3974337A (en) * | 1967-10-24 | 1976-08-10 | Matsushita Electric Industrial Co., Ltd. | FM television telephone system |
US3859459A (en) * | 1973-02-16 | 1975-01-07 | Exxon Research Engineering Co | FM demodulator circuit for a facsimile system |
US3911207A (en) * | 1973-11-21 | 1975-10-07 | Exxon Research Engineering Co | FM demodulator and control circuitry for a facsimile system |
US4000365A (en) * | 1974-01-30 | 1976-12-28 | Exxon Research And Engineering Company | Apparatus for detecting a poor facsimile transmission |
US3916098A (en) * | 1974-02-07 | 1975-10-28 | Exxon Research Engineering Co | Facsimile receiver with improved demodulator |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3296539A (en) * | 1964-03-02 | 1967-01-03 | Ampex | Pulse-counter demodulator |
-
1966
- 1966-03-18 US US535442A patent/US3467772A/en not_active Expired - Lifetime
-
1967
- 1967-02-23 ES ES337199A patent/ES337199A1/es not_active Expired
- 1967-02-27 CH CH281867A patent/CH481528A/de not_active IP Right Cessation
- 1967-03-02 BE BE694935A patent/BE694935A/xx unknown
- 1967-03-03 GB GB00151/67A patent/GB1181081A/en not_active Expired
- 1967-03-03 GB GB43527/69A patent/GB1181082A/en not_active Expired
- 1967-03-06 SE SE03060/67A patent/SE355459B/xx unknown
- 1967-03-10 FR FR98354A patent/FR1513951A/fr not_active Expired
- 1967-03-14 NL NL6703809A patent/NL6703809A/xx unknown
- 1967-03-15 NO NO167294A patent/NO121618B/no unknown
- 1967-03-15 DE DEM73185A patent/DE1298541B/de not_active Withdrawn
- 1967-03-17 BR BR187833/67A patent/BR6787833D0/pt unknown
Also Published As
Publication number | Publication date |
---|---|
NO121618B (de) | 1971-03-22 |
US3467772A (en) | 1969-09-16 |
BR6787833D0 (pt) | 1973-12-27 |
SE355459B (de) | 1973-04-16 |
NL6703809A (de) | 1967-09-19 |
BE694935A (de) | 1967-08-14 |
GB1181082A (en) | 1970-02-11 |
GB1181081A (en) | 1970-02-11 |
ES337199A1 (es) | 1968-04-01 |
DE1298541B (de) | 1969-07-03 |
FR1513951A (fr) | 1968-02-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |