JPS55115127A - Encode circuit for non-contact switch - Google Patents
Encode circuit for non-contact switchInfo
- Publication number
- JPS55115127A JPS55115127A JP2137279A JP2137279A JPS55115127A JP S55115127 A JPS55115127 A JP S55115127A JP 2137279 A JP2137279 A JP 2137279A JP 2137279 A JP2137279 A JP 2137279A JP S55115127 A JPS55115127 A JP S55115127A
- Authority
- JP
- Japan
- Prior art keywords
- key
- strobe signal
- input
- delivery
- contact switch
- 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
Landscapes
- Input From Keyboards Or The Like (AREA)
Abstract
PURPOSE: To ensure the two key lockout, by comparing the input and output of the latch circuit, delivering the strobe signal if equal each other, and stopping the delivery of strobe signal after that.
CONSTITUTION: In encoding the depression key signal inputted via the non-contact switch, the key input is inputted to the PROM circuits 10 and 11 and the detection signal of depression key is outputted from the circuits 10 and 11, and the data code of program preset according to the key input is outputted via the latch circuit 14. The comparators 15 and 16 compare the input and output of the circuit 14 and if they are equal, the delivery of strobe signal after the delivery of strobe signal is stopped. Thus, the two key lockout can surely be made.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2137279A JPS55115127A (en) | 1979-02-27 | 1979-02-27 | Encode circuit for non-contact switch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2137279A JPS55115127A (en) | 1979-02-27 | 1979-02-27 | Encode circuit for non-contact switch |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55115127A true JPS55115127A (en) | 1980-09-04 |
JPS5728127B2 JPS5728127B2 (en) | 1982-06-15 |
Family
ID=12053256
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2137279A Granted JPS55115127A (en) | 1979-02-27 | 1979-02-27 | Encode circuit for non-contact switch |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55115127A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5143911A (en) * | 1974-10-12 | 1976-04-15 | Nippon Telegraph & Telephone | |
JPS53135230A (en) * | 1977-04-28 | 1978-11-25 | Fujitsu Ltd | Detection system for double keying of keyboard |
-
1979
- 1979-02-27 JP JP2137279A patent/JPS55115127A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5143911A (en) * | 1974-10-12 | 1976-04-15 | Nippon Telegraph & Telephone | |
JPS53135230A (en) * | 1977-04-28 | 1978-11-25 | Fujitsu Ltd | Detection system for double keying of keyboard |
Also Published As
Publication number | Publication date |
---|---|
JPS5728127B2 (en) | 1982-06-15 |
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