US4347434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hand held data bus analyzer
Assignee: HP Inc
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Filing: 1980-01-18
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Granted: 1982-08-31
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Expires: 2000-01-18
Abstract
Abstract A hand held logic probe serially clocks applied data bits into a shift register in response to a user actuated thumb switch. The shift register is coupled to a hexidecimal/octal converter which drives a digital display. The display is reset in response to the user actuating the thumb switch for more than a predetermined time period.
Inventors
- 👤 Albert Kovalick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:38
CPC Classifications
G; G06; G06F; G06F11/00; G06F11/22; G06F11/25; G01; G01R; G01R1/00; G01R1/02; G01R1/06; G01R1/067; G01R1/06766
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
104 words
Logic level sensing and storage apparatus for assembling a digital word in a selected sequence from a data paths, said apparatus comprising: a probe tip; a shift register means coupled to said probe tip for containing a digital word therein; a display means coupled to said shift register means for displaying a visual indication of said digital word; a manually activated switch coupled to said shift register means; and means for clocking a representation of a first data bit on a data path in electrical contact with said probe tip into said shift register means in response to activation of said manually activated switch.
Claim 2
Dependent Claim
104 words
Logic level sensing and storage apparatus for assembling a digital word in a selected sequence from a data paths, said apparatus comprising: a probe tip; a shift register means coupled to said probe tip for containing a digital word therein; a display means coupled to said shift register means for displaying a visual indication of said digital word; a manually activated switch coupled to said shift register means; and means for clocking a representation of a first data bit on a data path in electrical contact with said probe tip into said shift register means in response to activation of said manually activated switch.
Claim 3
Dependent Claim
58 words
Apparatus as in claim 1 wherein said shift register means resets in response to a reset control signal and wherein said apparatus further comprises a means for timing coupled to said manual switch and said shift register means to provide said reset control signal in response to said manual switch being activated for a selected period of time.
Claim 4
Dependent Claim
21 words
Apparatus as in claim 1 and further comprising a level converter for coupling said probe tip to said shift register means.
Claim 5
Dependent Claim
21 words
Apparatus as in claim 1 further comprising a binary-to-hexadecimal converter for coupling said shift register means output to said display means.
Claim 6
Dependent Claim
21 words
Apparatus as in claim 1 further comprising a binary-to-octal converter for coupling said shift register means output to said display means.
Claim 7
Dependent Claim
44 words
Apparatus as in claim 1 wherein the contents of said shift register means is shifted within said shift register means and a new data bit is added to the contents within said shift register means, in response to activation of said manually activated switch.
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) | 1985-08-30 | 1986-03-01 | 1986-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-30 | 1990-03-01 | 1990-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-30 | 1994-03-01 | 1994-08-31 | $7700.00 | Window Closed / Lapsed |