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DE3779837D1 - MEASURES TO IMPROVE OPTICAL KEYPADS WITH SCAN. - Google Patents

MEASURES TO IMPROVE OPTICAL KEYPADS WITH SCAN.

Info

Publication number
DE3779837D1
DE3779837D1 DE19873779837 DE3779837Q DE3779837D1 DE 3779837 D1 DE3779837 D1 DE 3779837D1 DE 19873779837 DE19873779837 DE 19873779837 DE 3779837 Q DE3779837 Q DE 3779837Q DE 3779837 D1 DE3779837 D1 DE 3779837D1
Authority
DE
Germany
Prior art keywords
keypads
scan
measures
improve optical
optical
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 - Lifetime
Application number
DE19873779837
Other languages
German (de)
Inventor
Andre Marland
Alain Fargette
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from FR8602479A external-priority patent/FR2595022B1/en
Priority claimed from FR8613727A external-priority patent/FR2604658B1/en
Application filed by Individual filed Critical Individual
Priority claimed from PCT/FR1987/000045 external-priority patent/WO1987005172A1/en
Application granted granted Critical
Publication of DE3779837D1 publication Critical patent/DE3779837D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

DE19873779837 1986-02-24 1987-02-24 MEASURES TO IMPROVE OPTICAL KEYPADS WITH SCAN. Expired - Lifetime DE3779837D1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR8602479A FR2595022B1 (en) 1986-02-24 1986-02-24 OPTICAL KEYBOARD
FR8613727A FR2604658B1 (en) 1986-10-02 1986-10-02 MATRIX SCAN KEYBOARD
PCT/FR1987/000045 WO1987005172A1 (en) 1986-02-24 1987-02-24 Improvements to optical scanning keyboards

Publications (1)

Publication Number Publication Date
DE3779837D1 true DE3779837D1 (en) 1992-07-23

Family

ID=27251342

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19873779837 Expired - Lifetime DE3779837D1 (en) 1986-02-24 1987-02-24 MEASURES TO IMPROVE OPTICAL KEYPADS WITH SCAN.

Country Status (1)

Country Link
DE (1) DE3779837D1 (en)

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Legal Events

Date Code Title Description
8332 No legal effect for de