GB2220807A - Method and system for modulating a carrier signal - Google Patents
Method and system for modulating a carrier signalInfo
- Publication number
- GB2220807A GB2220807A GB8906556A GB8906556A GB2220807A GB 2220807 A GB2220807 A GB 2220807A GB 8906556 A GB8906556 A GB 8906556A GB 8906556 A GB8906556 A GB 8906556A GB 2220807 A GB2220807 A GB 2220807A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carrier signal
- modulated carrier
- modulating
- analog
- transition
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K7/00—Modulating pulses with a continuously-variable modulating signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Facsimile Image Signal Circuits (AREA)
Abstract
A system and method for modulating a carrier signal wherein occurence of the peaks in the modulated carrier signal conveys clocking information and each transition of a modulated carrier signal includes two midrange characteristics, the ratio of which represents data carried by that transition. Either analog or digital circuit techniques can be utilized to produce the modulated carrier signal, and either analog or digital techniques can be used to demodulate the modulated carrier signal in various embodiments of the invention.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US1986/001976 WO1988002199A1 (en) | 1986-09-22 | 1986-09-22 | Method and system for modulating a carrier signal |
Publications (3)
Publication Number | Publication Date |
---|---|
GB8906556D0 GB8906556D0 (en) | 1989-08-23 |
GB2220807A true GB2220807A (en) | 1990-01-17 |
GB2220807B GB2220807B (en) | 1991-02-06 |
Family
ID=22195645
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8906556A Expired - Lifetime GB2220807B (en) | 1986-09-22 | 1986-09-22 | Method and system for modulating a carrier signal |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0419450A1 (en) |
JP (1) | JPH02502869A (en) |
GB (1) | GB2220807B (en) |
WO (1) | WO1988002199A1 (en) |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR968026A (en) * | 1945-08-01 | 1950-11-17 | Sadir Carpentier | Method for duration modulation of electrical pulses |
US4015211A (en) * | 1976-04-09 | 1977-03-29 | Itek Corporation | Dual channel pulse width detector having delay and D.C. offset means therein |
CH641299A5 (en) * | 1978-11-13 | 1984-02-15 | Landis & Gyr Ag | Width-pause duration modulator for measurement purposes. |
US4333108A (en) * | 1980-03-10 | 1982-06-01 | Ampex Corporation | Apparatus and method for transmitting a pulse width modulated audio signal on a video signal |
US4341964A (en) * | 1980-05-27 | 1982-07-27 | Sperry Corporation | Precision time duration detector |
US4320521A (en) * | 1980-07-25 | 1982-03-16 | National Semiconductor Corporation | Data bus transceiver |
US4438466A (en) * | 1982-04-02 | 1984-03-20 | Ampex Corporation | D.C. Controlled adjustable ramp signal generator and method |
-
1986
- 1986-09-22 EP EP86906137A patent/EP0419450A1/en not_active Withdrawn
- 1986-09-22 WO PCT/US1986/001976 patent/WO1988002199A1/en not_active Application Discontinuation
- 1986-09-22 GB GB8906556A patent/GB2220807B/en not_active Expired - Lifetime
- 1986-09-22 JP JP50547786A patent/JPH02502869A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
JPH02502869A (en) | 1990-09-06 |
GB8906556D0 (en) | 1989-08-23 |
GB2220807B (en) | 1991-02-06 |
EP0419450A4 (en) | 1990-01-24 |
EP0419450A1 (en) | 1991-04-03 |
WO1988002199A1 (en) | 1988-03-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |