IT1063695B - Holographic switching system for telephone communication - includes LED matrix coupled to incoming speech lines - Google Patents
Holographic switching system for telephone communication - includes LED matrix coupled to incoming speech linesInfo
- Publication number
- IT1063695B IT1063695B IT2466476A IT2466476A IT1063695B IT 1063695 B IT1063695 B IT 1063695B IT 2466476 A IT2466476 A IT 2466476A IT 2466476 A IT2466476 A IT 2466476A IT 1063695 B IT1063695 B IT 1063695B
- Authority
- IT
- Italy
- Prior art keywords
- incoming
- optical signals
- lines
- holographic
- switching system
- Prior art date
Links
Abstract
The holographic switching system is used in a telephone communication system for interconnecting incoming and outgoing telephone lines and is coupled to the incoming lines to provide a number of optical signals. It converts incoming electrical telephone signals which are modulated by information, into intensity modulated optical signals which are coupled to the incoming line. The electrical selector signals arriving with the incoming lines are converted into a space phase modulation of the optical signals in a direction transverse to the direction of propagation of the optical signals. A holographic plate with a number of holographic images is provided. Each image represents a different outgoing telephone line. The selector signal recoverts the optical signals to be transmitted along the outgoing telephone lines.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/623,689 US3985975A (en) | 1975-03-04 | 1975-10-20 | Holographic telephone switching system |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1063695B true IT1063695B (en) | 1985-02-11 |
Family
ID=24499035
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT2466476A IT1063695B (en) | 1975-10-20 | 1976-06-24 | Holographic switching system for telephone communication - includes LED matrix coupled to incoming speech lines |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1063695B (en) |
-
1976
- 1976-06-24 IT IT2466476A patent/IT1063695B/en active
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