CA952033A - Keyboard encoder - Google Patents
Keyboard encoderInfo
- Publication number
- CA952033A CA952033A CA141,611A CA141611A CA952033A CA 952033 A CA952033 A CA 952033A CA 141611 A CA141611 A CA 141611A CA 952033 A CA952033 A CA 952033A
- Authority
- CA
- Canada
- Prior art keywords
- keyboard encoder
- encoder
- keyboard
- 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
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M11/00—Coding in connection with keyboards or like devices, i.e. coding of the position of operated keys
- H03M11/22—Static coding
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Input From Keyboards Or The Like (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14386071A | 1971-05-17 | 1971-05-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA952033A true CA952033A (en) | 1974-07-30 |
Family
ID=22505980
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA141,611A Expired CA952033A (en) | 1971-05-17 | 1972-05-08 | Keyboard encoder |
Country Status (7)
Country | Link |
---|---|
US (1) | US3778815A (de) |
CA (1) | CA952033A (de) |
DE (1) | DE2224140B2 (de) |
FR (1) | FR2138053B1 (de) |
GB (1) | GB1388143A (de) |
IT (1) | IT955525B (de) |
SE (1) | SE371510B (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS536817B2 (de) * | 1972-04-04 | 1978-03-11 | ||
JPS5319374B2 (de) * | 1973-04-03 | 1978-06-20 | ||
JPS5086929A (de) * | 1973-11-30 | 1975-07-12 | ||
US4419769A (en) * | 1976-03-08 | 1983-12-06 | General Instrument Corporation | Digital tuning system for a varactor tuner employing feedback means for improved tuning accuracy |
US4157539A (en) * | 1976-10-14 | 1979-06-05 | The Singer Company | Charge rate, capacitive switch system |
US4326194A (en) * | 1979-04-16 | 1982-04-20 | The Singer Company | Dual encoded switching matrix |
JPS607808B2 (ja) * | 1979-08-24 | 1985-02-27 | 株式会社東芝 | キ−入力回路 |
US4667181A (en) * | 1983-07-15 | 1987-05-19 | Honeywell Inc. | Keyboard data input assembly |
US4673933A (en) * | 1983-11-14 | 1987-06-16 | American Microsystems, Inc. | Switch matrix encoding interface using common input/output parts |
US5189629A (en) * | 1990-06-06 | 1993-02-23 | Hughes Aircraft Company | Method of logic gate reduction in a logic gate array |
SE508136C2 (sv) * | 1996-12-19 | 1998-08-31 | Ericsson Telefon Ab L M | Anordning och förfarande för tangentbordsavläsning |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2610243A (en) * | 1951-04-06 | 1952-09-09 | Monroe Calculating Machine | Keyboard operated translating circuit |
US3307148A (en) * | 1962-04-16 | 1967-02-28 | Nippon Electric Co | Plural matrix decoding circuit |
US3541547A (en) * | 1968-03-15 | 1970-11-17 | Ibm | Code converter |
-
1971
- 1971-05-17 US US00143860A patent/US3778815A/en not_active Expired - Lifetime
-
1972
- 1972-05-08 CA CA141,611A patent/CA952033A/en not_active Expired
- 1972-05-11 GB GB2203072A patent/GB1388143A/en not_active Expired
- 1972-05-15 IT IT24359/72A patent/IT955525B/it active
- 1972-05-16 SE SE7206391A patent/SE371510B/xx unknown
- 1972-05-17 DE DE2224140A patent/DE2224140B2/de active Granted
- 1972-05-17 FR FR727217688A patent/FR2138053B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2138053A1 (de) | 1972-12-29 |
DE2224140B2 (de) | 1974-02-14 |
US3778815A (en) | 1973-12-11 |
SE371510B (de) | 1974-11-18 |
GB1388143A (en) | 1975-03-26 |
FR2138053B1 (de) | 1973-07-13 |
DE2224140A1 (de) | 1972-11-30 |
IT955525B (it) | 1973-09-29 |
DE2224140C3 (de) | 1974-11-28 |
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