GB1425199A - Pulsed light type control system - Google Patents
Pulsed light type control systemInfo
- Publication number
- GB1425199A GB1425199A GB2533773A GB2533773A GB1425199A GB 1425199 A GB1425199 A GB 1425199A GB 2533773 A GB2533773 A GB 2533773A GB 2533773 A GB2533773 A GB 2533773A GB 1425199 A GB1425199 A GB 1425199A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulses
- detector
- vibrator
- period
- vibrators
- 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
- 230000001960 triggered effect Effects 0.000 abstract 2
- 230000003287 optical effect Effects 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
- G08C23/04—Non-electrical signal transmission systems, e.g. optical systems using light waves, e.g. infrared
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J9/00—Remote-control of tuned circuits; Combined remote-control of tuning and other functions, e.g. brightness, amplification
- H03J9/06—Remote-control of tuned circuits; Combined remote-control of tuning and other functions, e.g. brightness, amplification using electromagnetic waves other than radio waves, e.g. light
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Selective Calling Equipment (AREA)
- Optical Communication System (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
1425199 Optical control systems MATSUSHITA ELECTRONICS CORP 29 May 1973 [30 May 1972] 25337/73 Heading G1A In a system for transmitting information over a radiation path, a light source emits pulses of predetermined period and a light detector converts the pulses to electric signals which activate a group of monostable multi-vibrators whose outputs are combined by a logic circuit to give a signal depending on the period of the light pulses received. The light source may be an l.e.d. which radiates pulses whose period is either t 1 , or 2 t 1 , the detector then being connected to two multivibrators as in Fig. 3 (not shown). Fig. 5a shows the detector output, while Figs. 5b and 5c respectively show the outputs triggered from the two multi-vibrators. The first multi-vibrator produces a train of pulses of duration T 1 , slightly less than t 1 , while the second multi-vibrator gives pulses of duration 2T 1 . It will be seen that the output of both multi-vibrators is substantially D.C. because as soon as each multi-vibrator turns off it is triggered on again by the detector signal. In Figs. 6a, 6b and 6c the response of the two multivibrators to detector signals of period 2t 1 is shown, and here only the second multi-vibrator produces the substantially D.C. output. The multi-vibrator outputs are connected to terminals 7 and 8 of logic transistors in Fig. 4, and when both terminals receive substantially D.C. inputs relay 12 is operated, while when only terminal 8 receives such an input relay 13 is operated. Hence one or other relay is operated in response to the period of the signal transmitted by the l.e.d.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP47053986A JPS498685A (en) | 1972-05-30 | 1972-05-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1425199A true GB1425199A (en) | 1976-02-18 |
Family
ID=12957928
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2533773A Expired GB1425199A (en) | 1972-05-30 | 1973-05-29 | Pulsed light type control system |
Country Status (6)
Country | Link |
---|---|
JP (1) | JPS498685A (en) |
AU (1) | AU452359B2 (en) |
CA (1) | CA983583A (en) |
FR (1) | FR2187159A5 (en) |
GB (1) | GB1425199A (en) |
IT (1) | IT985242B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5190047A (en) * | 1989-07-25 | 1993-03-02 | Seiko Instruments Inc. | Photoelectric pulsation type pulsimeter |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2718226C3 (en) * | 1977-04-23 | 1980-07-17 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Data transmission system consisting of a transmitter and a receiver |
JPS56139143U (en) * | 1981-02-27 | 1981-10-21 | ||
JPS5796439U (en) * | 1981-10-28 | 1982-06-14 | ||
US9834467B2 (en) | 2012-08-30 | 2017-12-05 | Corning Incorporated | Method and apparatus for making a profiled tubing and a sleeve |
-
1972
- 1972-05-30 JP JP47053986A patent/JPS498685A/ja active Pending
-
1973
- 1973-05-29 CA CA172,576A patent/CA983583A/en not_active Expired
- 1973-05-29 FR FR7319563A patent/FR2187159A5/fr not_active Expired
- 1973-05-29 IT IT50308/73A patent/IT985242B/en active
- 1973-05-29 GB GB2533773A patent/GB1425199A/en not_active Expired
- 1973-05-30 AU AU56287/73A patent/AU452359B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5190047A (en) * | 1989-07-25 | 1993-03-02 | Seiko Instruments Inc. | Photoelectric pulsation type pulsimeter |
Also Published As
Publication number | Publication date |
---|---|
DE2327430B2 (en) | 1977-02-03 |
AU452359B2 (en) | 1974-09-05 |
AU5628773A (en) | 1974-09-05 |
DE2327430A1 (en) | 1973-12-13 |
FR2187159A5 (en) | 1974-01-11 |
IT985242B (en) | 1974-11-30 |
JPS498685A (en) | 1974-01-25 |
CA983583A (en) | 1976-02-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
746 | Register noted 'licences of right' (sect. 46/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19920529 |