AT346938B - Frequenzmodulator - Google Patents
FrequenzmodulatorInfo
- Publication number
- AT346938B AT346938B AT874575A AT874575A AT346938B AT 346938 B AT346938 B AT 346938B AT 874575 A AT874575 A AT 874575A AT 874575 A AT874575 A AT 874575A AT 346938 B AT346938 B AT 346938B
- Authority
- AT
- Austria
- Prior art keywords
- frequency modulator
- modulator
- frequency
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K7/00—Modulating pulses with a continuously-variable modulating signal
- H03K7/06—Frequency or rate modulation, i.e. PFM or PRM
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/524,656 US3944949A (en) | 1974-11-18 | 1974-11-18 | Frequency modulator |
Publications (2)
Publication Number | Publication Date |
---|---|
ATA874575A ATA874575A (de) | 1978-04-15 |
AT346938B true AT346938B (de) | 1978-12-11 |
Family
ID=24090135
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT874575A AT346938B (de) | 1974-11-18 | 1975-11-17 | Frequenzmodulator |
Country Status (9)
Country | Link |
---|---|
US (1) | US3944949A (de) |
JP (1) | JPS5237755A (de) |
AT (1) | AT346938B (de) |
BE (1) | BE835311A (de) |
CA (1) | CA1060553A (de) |
DE (1) | DE2551785C3 (de) |
FR (1) | FR2291648A1 (de) |
GB (1) | GB1513583A (de) |
NL (1) | NL168381C (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2643949C3 (de) * | 1976-09-29 | 1981-06-19 | Siemens AG, 1000 Berlin und 8000 München | Schaltungsanordnung zum impulsmäßigen Übertragen von analogen Spannungswerten beider Polaritäten |
JPS5932163A (ja) * | 1982-08-18 | 1984-02-21 | Nec Corp | Cmos集積回路 |
DE3413143A1 (de) * | 1984-04-07 | 1985-10-17 | Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig holländ. Stiftung & Co KG, 8510 Fürth | Fm-modulator |
DE3425671A1 (de) * | 1984-07-12 | 1986-01-23 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Verfahren und vorrichtung zum messen der daempfung an lichtwellenleitern |
GB2189113B (en) * | 1986-04-12 | 1990-04-25 | Thorn Emi Datatech Ltd | A voltage-controlled oscillator |
DE4013087A1 (de) * | 1990-04-25 | 1991-10-31 | Dierk Bobzin | Verfahren zur pulsbreitenmodulation/demodulation, insbesondere zur aufzeichnung von videosignalen auf magnetische und optische datentraeger (parallelmodulator) |
US7106130B2 (en) * | 2003-09-05 | 2006-09-12 | Delta Electronics, Inc. | Variable frequency PWM controller circuit |
JP2006020171A (ja) * | 2004-07-02 | 2006-01-19 | Fujitsu Ltd | 差動型コンパレータ、アナログ・デジタル変換装置、撮像装置 |
US20060057864A1 (en) * | 2004-09-13 | 2006-03-16 | Joseph Jeffrey A | Rotative electrical coupling |
TWI306326B (en) * | 2006-03-10 | 2009-02-11 | Weltrend Semiconductor Inc | Pulse frequency modulation oscillating circuit for a dc/dc converter |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3290617A (en) * | 1962-07-09 | 1966-12-06 | Northern Electric Co | Frequency modulated relaxation oscillator |
US3371291A (en) * | 1965-01-11 | 1968-02-27 | Astrodata Inc | Current control of oscillator frequency |
US3328724A (en) * | 1966-01-26 | 1967-06-27 | John L Way | Voltage controlled free-running flip-flop oscillator |
US3528036A (en) * | 1968-07-12 | 1970-09-08 | Ibm | Fm modulator for video recording |
US3581239A (en) * | 1969-03-05 | 1971-05-25 | Motorola Inc | Frequency modulated crystal controlled oscillator operable at a plurality of temperature compensated center frequencies |
JPS4866361A (de) * | 1971-12-14 | 1973-09-11 | ||
JPS4960468A (de) * | 1972-10-09 | 1974-06-12 | ||
US3794934A (en) * | 1972-11-02 | 1974-02-26 | Gte Sylvania Inc | Non-saturating oscillator and modulator circuit |
US3842371A (en) * | 1973-10-12 | 1974-10-15 | Honeywell Inc | Voltage to frequency converter |
JPS50156864A (de) * | 1974-06-06 | 1975-12-18 |
-
1974
- 1974-11-18 US US05/524,656 patent/US3944949A/en not_active Expired - Lifetime
-
1975
- 1975-10-27 CA CA238,414A patent/CA1060553A/en not_active Expired
- 1975-10-27 GB GB44178/75A patent/GB1513583A/en not_active Expired
- 1975-11-05 JP JP50132834A patent/JPS5237755A/ja active Pending
- 1975-11-06 BE BE161638A patent/BE835311A/xx not_active IP Right Cessation
- 1975-11-12 FR FR7534402A patent/FR2291648A1/fr active Granted
- 1975-11-17 AT AT874575A patent/AT346938B/de not_active IP Right Cessation
- 1975-11-18 NL NLAANVRAGE7513453,A patent/NL168381C/xx not_active IP Right Cessation
- 1975-11-18 DE DE2551785A patent/DE2551785C3/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5237755A (en) | 1977-03-23 |
CA1060553A (en) | 1979-08-14 |
FR2291648A1 (fr) | 1976-06-11 |
NL7513453A (nl) | 1976-05-20 |
BE835311A (fr) | 1976-03-01 |
NL168381C (nl) | 1982-03-16 |
US3944949A (en) | 1976-03-16 |
GB1513583A (en) | 1978-06-07 |
DE2551785B2 (de) | 1979-03-01 |
DE2551785A1 (de) | 1976-05-20 |
FR2291648B1 (de) | 1981-08-07 |
DE2551785C3 (de) | 1979-10-31 |
NL168381B (nl) | 1981-10-16 |
ATA874575A (de) | 1978-04-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ELJ | Ceased due to non-payment of the annual fee |