GB1246295A - Manual switch - Google Patents
Manual switchInfo
- Publication number
- GB1246295A GB1246295A GB6032868A GB6032868A GB1246295A GB 1246295 A GB1246295 A GB 1246295A GB 6032868 A GB6032868 A GB 6032868A GB 6032868 A GB6032868 A GB 6032868A GB 1246295 A GB1246295 A GB 1246295A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aperture
- detector
- gap
- light
- light source
- 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
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/941—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated using an optical detector
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
- H03K17/9627—Optical touch switches
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/965—Switches controlled by moving an element forming part of the switch
- H03K17/968—Switches controlled by moving an element forming part of the switch using opto-electronic devices
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
1, 246, 295. Photo-electric switches. INTERNATIONAL STANDARD ELECTRIC CORP. Dec. 19, 1968, No.60328/68. Heading G1A. A non-contact-making switch comprises a light source illuminating a detector across a gap within a switch body and an aperture providing the only means of access to the gap, the aperture and the gap being of such a size as not to admit an obturator substantially larger than a human finger tip. Light from a source 2, Fig. 1, passing by way of fibre optics 3 to a detector 4 is interrupted by the operators finger. Lenses may be provided to improve optical efficiency, Fig. 2, (not shown). In Fig. 3 the detector 4 is in the base of the trough and a diaphragm 8 prevents ingress of dirt. In Fig. 4 (not shown) the diaphragm is replaced by a button actuated by the operator's finger. The light source, which is either self radiating or excited like a fluorescent tube, may be annular, Fig. 6 (not shown). The light source 14, Fig. 7 may be beneath the trough, and the operators finger closes the aperture 13a. Infrared transmissive filters may be located in the aperture 13a and in front of the cell 4 to reduce the effect of ambient light. A mirror may be located so as to reflect more of the light passing through aperture 13a to the cell 4. A plurality of switches may be combined to make a keyboard Fig. 5 (not shown).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB6032868A GB1246295A (en) | 1968-12-19 | 1968-12-19 | Manual switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB6032868A GB1246295A (en) | 1968-12-19 | 1968-12-19 | Manual switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1246295A true GB1246295A (en) | 1971-09-15 |
Family
ID=10485435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6032868A Expired GB1246295A (en) | 1968-12-19 | 1968-12-19 | Manual switch |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1246295A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2133139A (en) * | 1982-12-29 | 1984-07-18 | Western Electric Co | Touch sensitive device |
| GB2156512A (en) * | 1984-03-23 | 1985-10-09 | Hanger & Co Ltd J E | Pressure or touch sensor |
-
1968
- 1968-12-19 GB GB6032868A patent/GB1246295A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2133139A (en) * | 1982-12-29 | 1984-07-18 | Western Electric Co | Touch sensitive device |
| GB2156512A (en) * | 1984-03-23 | 1985-10-09 | Hanger & Co Ltd J E | Pressure or touch sensor |
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