US3852716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Point-of-sale processing system
Assignee: BERKEL SYSTEMS Inc A CORP OF
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Filing: 1973-03-02
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Granted: 1974-12-03
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Expires: 1993-03-02
Abstract
Abstract A data processing system comprising a keyboard having a plurality of keys arranged in an array of rows and columns, and programming means likewise arranged in an array of rows and columns such that each intersection of a row and a column corresponds to a single key at a row-column intersection of the keyboard. Means are included for electrically scanning one of the keyboard rows and columns to sequentially detect activated keys, and means are included for latching the scanning means until an output is provided which corresponds to the activated key.
Inventors
- 👤 J Horn
- 👤 K Sawer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:28
CPC Classifications
H; H03; H03M; H03M11/00; H03M11/20; G; G06; G06Q; G06Q20/00; G06Q20/08; G06Q20/20; G06V; G06V10/00; G06V10/20; G07; G07G; G07G1/00; G07G1/0018; G07G1/10; G07G1/12
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
189 words
A data processing system comprising: a. data processing means; b. a keyboard having a plurality of keys arranged in an array of rows and columns, said keyboard being electrically coupled to said processing means and adapted to provide an electrical input thereto corresponding to one of said keys when such key is activated. c. programming means electrically coupled to said processing means, said programming means including a plurality of substantially parallel printed circuit boards each having a plurality of individual conductive paths disposed on the front and back sides thereof, the conductive paths on one side being substantially transverse to the conductive paths on the opposing side; and wherein said conductive paths on said printed circuit boards define a row-column array such that each row-column intersection has a physical relationship which corresponds to a single key at a row-column intersection on said keyboard; d. means for electrically scanning either of said keyboard rows and columns to sequentially detect activated keys and provide said input corresponding to each detected key; and e. means for latching said scanning means until an output is provided from said keyboard into said processing means.
Claim 2
Dependent Claim
189 words
A data processing system comprising: a. data processing means; b. a keyboard having a plurality of keys arranged in an array of rows and columns, said keyboard being electrically coupled to said processing means and adapted to provide an electrical input thereto corresponding to one of said keys when such key is activated. c. programming means electrically coupled to said processing means, said programming means including a plurality of substantially parallel printed circuit boards each having a plurality of individual conductive paths disposed on the front and back sides thereof, the conductive paths on one side being substantially transverse to the conductive paths on the opposing side; and wherein said conductive paths on said printed circuit boards define a row-column array such that each row-column intersection has a physical relationship which corresponds to a single key at a row-column intersection on said keyboard; d. means for electrically scanning either of said keyboard rows and columns to sequentially detect activated keys and provide said input corresponding to each detected key; and e. means for latching said scanning means until an output is provided from said keyboard into said processing means.
Claim 3
Dependent Claim
62 words
A system as recited in claim 1 wherein said keyboard comprises: a. a plurality of circuit lines arranged in said row-column array, each circuit line connected to all of said keys in the corresponding row or column; and b. coding means coupled with said scanning means for simultaneously generating a predetermined code when each rowcolumn intersection of said circuit lines is scanned.
Claim 4
Dependent Claim
28 words
A system as recited in claim 2 wherein said coding means comprises a binary coding circuit coupled to said scanning means and said row or column circuit lines.
Claim 5
Dependent Claim
21 words
A system as recited in claim 3 wherein said scanning means comprises a clock circuit coupled to said binary coding circuit.
Claim 6
Dependent Claim
24 words
A system as recited in claim 4 further comprising another binary coding circuit coupled to the other of said row and column circuit lines.
Claim 7
Dependent Claim
47 words
A system as recited in claim 5 further comprising a demultiplexing circuit interposed between one of said binary coding circuits and the corresponding row and column circuit lines, and a multiplexing circuit coupled between the other binary coding circuit and the corresponding row and column circuit lines.
Claim 8
Dependent Claim
42 words
A system as recited in claim 6 wherein said latching means comprises a latching circuit interposed between said multiplexing circuit and said clock circuit, said latching circuit adapted to latch said clock circuit when an output is received from said multiplexing circuit.
Claim 9
Dependent Claim
52 words
A system as recited in claim 1 wherein said programmer further comprises: a. a frame member having a plurality of equidistantly spaced openings arranged in an array of rows and columns; and wherein b. each said opening is axially aligned with a corresponding one of said conductive paths on said one side.
Claim 10
Dependent Claim
87 words
A system as recited in claim 1 further comprising; said printed circuit boards arranged in three-board major columns; one of said boards in each said major column comprising means for receiving an input from said processing means corresponding to a row in said major column; means coupled with said one board for energizing said corresponding row on all of said boards in said major column; and means for conducting current from said energized row to one of said transverse columns on one of said boards adjacent thereto.
Claim 11
Dependent Claim
34 words
A system as recited in claim 9 wherein said current-conducting means comprises a removable plug extending through said Aperture and including a metallic clip for electrically coupling said energized row to said transverse column.
Claim 12
Dependent Claim
20 words
A system as recited in claim 10 further comprising bus lines coupled between each transverse column and said processing means.
Claim 13
Dependent Claim
38 words
A system as recited in claim 11 wherein said bus lines comprise three bus lines, each bus line being only coupled to said transverse column of a corresponding one of said three circuit boards in each major column.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |