US5339358A
Expired / Lapsed
US
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Telephone keypad matrix
Assignee: Danish International Inc
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Filing: 1992-05-26
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Granted: 1994-08-16
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Expires: 2012-05-26
Abstract
Abstract A method and apparatus for the conversion of a standard push button telephone keypad into a data entry terminal permitting full alphanumeric DTMF entry through a telephone system to a file server for delivery to a service provider computer. The alphabetical letters are prearranged to enable single or adjacent keypairs to be defined for each alphabetical letter. DTMF signals are generated by the keypairs and are transmitted to conventional voice tone recognition apparatus and storage facilities of the central computer for later or simultaneous delivery to a service provider computer such as a facsimile machine, an E-mail system, a paging system, and/or any data base connected to a telephone line.
Inventors
- 👤 Adel Danish
- 👤 Sherif Danish
- 👤 Kris W. Kimbrough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:45
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/02; G06F3/023; G06F3/0233; G06F3/0235; H; H04; H04M; H04M1/00; H04M1/26; H04M1/27; H04M1/274; H04M1/2745; H04M1/27467; H04M1/2748; H04M11/00; H04M11/06; H04M11/066; H04M3/00; H04M3/42; Y; Y10; Y10S; Y10S379/00; Y10S379/906
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
55 words
A matrix for entering alphanumeric characters into a first computer means for delivery to a service provider computer means configured as a facsimile system, the matrix comprising a pattern of characters prearranged on a conventional telephone keypad, the pattern arrayed so that only one character is placed between any two adjacent keys of the keypad.
Claim 2
Dependent Claim
55 words
A matrix for entering alphanumeric characters into a first computer means for delivery to a service provider computer means configured as a facsimile system, the matrix comprising a pattern of characters prearranged on a conventional telephone keypad, the pattern arrayed so that only one character is placed between any two adjacent keys of the keypad.
Claim 3
Dependent Claim
20 words
The matrix of claim 1 wherein the service provider computer means is configured as a computer for a paging system.
Claim 4
Dependent Claim
20 words
The matrix of claim 1 wherein the service provider computer means is configured as a computer of a messaging system.
Claim 5
Dependent Claim
20 words
The matrix of claim 1 wherein the service provider computer means is configured as a telephone accessible data base computer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-08-15 | 1998-02-14 | 1998-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-08-15 | 2002-02-14 | 2002-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-08-15 | 2006-02-14 | 2006-08-16 | $7700.00 | Window Closed / Lapsed |