US4740841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Correlation of video data between two display formats
Assignee: Tektronix Inc
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Filing: 1987-03-24
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Granted: 1988-04-26
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Expires: 2007-03-24
Abstract
Abstract A method for correlating video data between two video display formats uses a multi-function instrument which digitizes the input video data. An operator selects a horizontal line of the video data via a rotary encoder which updates a global variable common to all display formats. Subsequent selection of a different display format results in the same horizontal line of the video data being displayed in the new display format.
Inventors
- 👤 Keith R. Slavin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:48
CPC Classifications
H; H04; H04N; H04N17/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
74 words
A method for correlating video data having a standard television format between different display functions of a multi-function instrument comprising the steps of: selecting in a first display function a line number corresponding to the video data to be correlated, the line number being a global variable common to all display functions; and selecting a second display function, the video data displayed by the second display function being that determined by the global variable.
Claim 2
Independent Claim
74 words
A method for correlating video data having a standard television format between different display functions of a multi-function instrument comprising the steps of: selecting in a first display function a line number corresponding to the video data to be correlated, the line number being a global variable common to all display functions; and selecting a second display function, the video data displayed by the second display function being that determined by the global variable.
Claim 3
Dependent Claim
45 words
A method as recited in claim 1 wherein the step of selecting the line number comprises: activating a line select function; and rotating a rotary encoder, rotation of the rotary encoder serving to increment or decrement the line number according to the direction of rotation.
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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) | 1991-04-26 | 1991-10-26 | 1992-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-26 | 1995-10-26 | 1996-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-26 | 1999-10-26 | 2000-04-26 | $7700.00 | Window Closed / Lapsed |