GB663179A - Improvements in or relating to apparatus for the demodulation of width-modulated pulse signals in telecommunication systems - Google Patents
Improvements in or relating to apparatus for the demodulation of width-modulated pulse signals in telecommunication systemsInfo
- Publication number
- GB663179A GB663179A GB2436748A GB2436748A GB663179A GB 663179 A GB663179 A GB 663179A GB 2436748 A GB2436748 A GB 2436748A GB 2436748 A GB2436748 A GB 2436748A GB 663179 A GB663179 A GB 663179A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulse
- duration
- sept
- modulated
- modulation
- 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
- H03K—PULSE TECHNIQUE
- H03K9/00—Demodulating pulses which have been modulated with a continuously-variable signal
- H03K9/08—Demodulating pulses which have been modulated with a continuously-variable signal of duration- or width-mudulated pulses or of duty-cycle modulated pulses
Landscapes
- Amplitude Modulation (AREA)
Abstract
663,179. Pulse modulation. GENERAL ELECTRIC CO., Ltd., HEAD, N. E., and KAYE, E. J. Sept. 16, 1949 [Sept. 16, 1948], No. 24367/48. Class 40 (v). Relates to the conversion of duration modulated signal pulses to rectangular amplitude - modulated pulses of constant duration, The duration-modulated pulses 6 are applied to an integrating capacitor the voltage on which rises to a value 7. The capacitor retains its charge until discharged at the point 8 by a valve rendered conductive by the input pulse after passage through a delay device of predetermined time constant. The longer pulse 61 produces the output pulse 7<SP>1</SP> of correspondingly greater amplitude. To eliminate time modulation a gating device may be provided to slice a rectangular pulse 9 from the trapezoidal output pulse. This may be accomplished, in a time division multiplex signalling system, by using an electronic distributer in which an electron beam crosses a target electrode in a time less than the duration of the pulse applied to its control grid. Specification 628,367 is referred to.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2436748A GB663179A (en) | 1948-09-16 | 1948-09-16 | Improvements in or relating to apparatus for the demodulation of width-modulated pulse signals in telecommunication systems |
| FR995334D FR995334A (en) | 1948-09-16 | 1949-09-16 | Conversion of pulse width modulated signals to amplitude modulated pulse signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2436748A GB663179A (en) | 1948-09-16 | 1948-09-16 | Improvements in or relating to apparatus for the demodulation of width-modulated pulse signals in telecommunication systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB663179A true GB663179A (en) | 1951-12-19 |
Family
ID=10210600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2436748A Expired GB663179A (en) | 1948-09-16 | 1948-09-16 | Improvements in or relating to apparatus for the demodulation of width-modulated pulse signals in telecommunication systems |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR995334A (en) |
| GB (1) | GB663179A (en) |
-
1948
- 1948-09-16 GB GB2436748A patent/GB663179A/en not_active Expired
-
1949
- 1949-09-16 FR FR995334D patent/FR995334A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR995334A (en) | 1951-11-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB651088A (en) | Electric pulse communication system | |
| GB601931A (en) | Multi-channel communication system | |
| GB595624A (en) | Electric pulse modulation system | |
| GB550814A (en) | Multiplex signal-translating system | |
| GB581811A (en) | Pulse modulation signalling systems | |
| GB1180982A (en) | Improvements in or relating to Pulse Duration Modulators | |
| GB587939A (en) | Improvements in or relating to multi-channel electrical pulse communication systems | |
| GB596078A (en) | Improvements in or relating to arrangements for demodulating time modulated electricpulses | |
| GB985828A (en) | Improvements in or relating to the demodulation of pulse-position-modulated signals | |
| ES339686A1 (en) | Multicorrelator for analogue signals employing pulse width-amplitude multiplication and operating in real time | |
| GB663179A (en) | Improvements in or relating to apparatus for the demodulation of width-modulated pulse signals in telecommunication systems | |
| GB669617A (en) | Improvements in or relating to electric pulse code modulation systems | |
| GB1047857A (en) | Improvements in or relating to sweep frequency signal generators | |
| GB628833A (en) | A system for separating synchronising pulses from signal-modulated pulses | |
| GB628260A (en) | Method for the duration modulation of electric pulses | |
| GB699889A (en) | Improvements in gating arrangements for pulse amplitude modulation time division multiplex signalling systems | |
| GB729288A (en) | Improvements in or relating to radar relays for transmitting radar images | |
| GB654618A (en) | Improvements in or relating to electric pulse modulation circuit arrangements | |
| GB638336A (en) | Improvements in or relating to carrier wave communication systems employing frequency modulations | |
| GB997992A (en) | Multiplex channel selector | |
| GB580769A (en) | Improvements relating to pulse signalling systems | |
| GB669364A (en) | Improvements in or relating to electric pulse modulation systems | |
| GB653022A (en) | Pulse time demodulation system | |
| GB606780A (en) | Frequency modulation system for electric signalling | |
| GB1030102A (en) | High frequency sampler |