GB628555A - Improvements in or relating to signalling systems employing pulse-width modulation - Google Patents

Improvements in or relating to signalling systems employing pulse-width modulation

Info

Publication number: GB628555A
Authority: GB; United Kingdom
Prior art keywords: voltage; pulses; signal voltage; intervals; wave
Prior art date: 1945-09-25
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

Application number

GB17292/46A

Other languages

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Philips Lamps Ltd

Koninklijke Philips NV

Original Assignee

Philips Lamps Ltd

Philips Gloeilampenfabrieken NV

Priority date (The priority date 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 date listed.)

1945-09-25

Filing date

1946-06-06

Publication date

1949-08-31

1946-06-06 Application filed by Philips Lamps Ltd, Philips Gloeilampenfabrieken NV filed Critical Philips Lamps Ltd

1949-08-31 Publication of GB628555A publication Critical patent/GB628555A/en

Status Expired legal-status Critical Current

Links

230000011664 signaling Effects 0.000 title 1
230000000737 periodic effect Effects 0.000 abstract 1
230000000717 retained effect Effects 0.000 abstract 1

Classifications

- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K7/00—Modulating pulses with a continuously-variable modulating signal
- H03K7/08—Duration or width modulation ; Duty cycle modulation

Landscapes

Plasma Technology (AREA)
Feedback Control In General (AREA)
Amplitude Modulation (AREA)
Lasers (AREA)

GB17292/46A 1945-09-25 1946-06-06 Improvements in or relating to signalling systems employing pulse-width modulation Expired GB628555A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NL271004X		1945-09-25

Publications (1)

Publication Number	Publication Date
GB628555A true GB628555A (en)	1949-08-31

Family

ID=19781929

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB17292/46A Expired GB628555A (en)	1945-09-25	1946-06-06	Improvements in or relating to signalling systems employing pulse-width modulation

Country Status (7)

Country	Link
US (1)	US2471168A (de)
BE (1)	BE468599A (de)
CH (1)	CH271004A (de)
DE (1)	DE851965C (de)
FR (1)	FR939866A (de)
GB (1)	GB628555A (de)
NL (1)	NL73971C (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3380003A (en) *	1965-02-25	1968-04-23	Gen Motors Corp	Signal frequency to pulse width modulation converter
US3478170A (en) *	1965-10-22	1969-11-11	Siemens Ag	Modulation system for converting analogue signals to a pulse amplitude to pulse width to a binary output

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
BE484658A (de) *	1947-09-06
US2718449A (en) *	1949-09-23	1955-09-20	Phillips Petroleum Co	Pulse measuring apparatus
US2753452A (en) *	1949-10-12	1956-07-03	Gen Dynamics Corp	Synchronizing signal separation system
US2748278A (en) *	1951-05-21	1956-05-29	Hewlett Packard Co	Sine wave generator
US2700501A (en) *	1951-12-28	1955-01-25	Wang An	Voltage detector
FR1200751A (fr) *	1956-11-13	1959-12-24	Decca Record Co Ltd	Perfectionnements à la transmission électrique et à l'emmagasinage d'informations représentées par des tensions continues
US3393363A (en) *	1963-10-07	1968-07-16	Forster Ind Inc	Amplifying means employing pulse width modulation
GB1168076A (en) *	1965-10-07	1969-10-22	Matsushita Electric Ind Co Ltd	System for Transmitting or Recording and Reproducing a Plurality of Signals
FR2455526A2 (fr) *	1979-05-04	1980-11-28	Treves Ets	Appui-tete pour siege de vehicule

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US1712993A (en) *	1916-08-14	1929-05-14	Western Electric Co	Signaling system
US2121117A (en) *	1935-03-18	1938-06-21	Richard E Conover	Electronic timer
US2269151A (en) *	1937-04-24	1942-01-06	Gen Electric	Electric control circuits
US2284101A (en) *	1940-02-29	1942-05-26	Rca Corp	Impulse generator
US2413440A (en) *	1942-05-15	1946-12-31	Hazeltine Research Inc	Electronic switch
US2392632A (en) *	1944-06-17	1946-01-08	Gen Electric	Frequency difference measurement

0
- BE BE468599D patent/BE468599A/xx unknown
- NL NL73971D patent/NL73971C/xx active
1946
- 1946-06-06 GB GB17292/46A patent/GB628555A/en not_active Expired
- 1946-10-26 CH CH271004D patent/CH271004A/fr unknown
- 1946-11-22 US US711688A patent/US2471168A/en not_active Expired - Lifetime
1947
- 1947-01-21 FR FR939866D patent/FR939866A/fr not_active Expired
1948
- 1948-11-02 DE DEP20325A patent/DE851965C/de not_active Expired

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3380003A (en) *	1965-02-25	1968-04-23	Gen Motors Corp	Signal frequency to pulse width modulation converter
US3478170A (en) *	1965-10-22	1969-11-11	Siemens Ag	Modulation system for converting analogue signals to a pulse amplitude to pulse width to a binary output

Also Published As

Publication number	Publication date
BE468599A (de)
DE851965C (de)	1952-10-09
US2471168A (en)	1949-05-24
NL73971C (de)
CH271004A (fr)	1950-09-30
FR939866A (fr)	1948-11-26

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