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US4703259A
Expired / Lapsed
US
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Forward and reflected power measurement and display
Assignee: Motorola Solutions Israel Ltd
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Filing: 1985-10-17
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Granted: 1987-10-27
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Expires: 2005-10-17
Abstract
Abstract A device for displaying forward and reflected power values simultaneously comprises a plurality of display segments which are switched on in a predetermined sequence to display the forward power and switched off in a predetermined sequence to display the reflected power.
Inventors
- 👤 Shlomo Berliner
- 👤 Areyh Vered
- 👤 Reich Shmuel
- 👤 Moshe Vaige
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:29
CPC Classifications
G; G01; G01R; G01R27/00; G01R27/02; G01R27/04; G01R27/06; G01R13/00; G01R13/40; G01R13/404
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
140 words
A measurement and display device for simultaneously dsplaying two parameters, comprising: means for receiving a first and second parameter to be simultaneously displayed; sampling means, coupled to said receiving means, for sampling said parameters, to provide a first and second new sample value; means for displaying a first and second current sample value of said first and second parameters; first comparing means, coupled to said sampling means and said displaying means, for respectively comparing said first and second new sample values and said first and second current sample value, and for providing a first and second comparision signal; second comparing means, coupled to said first comparing means, for respectively comparing said first and second comparison signal with a first and second predetermined threshold, and for limiting changes in said first and second current sample value to a predetermined maximum change.
Claim 2
Dependent Claim
140 words
A measurement and display device for simultaneously dsplaying two parameters, comprising: means for receiving a first and second parameter to be simultaneously displayed; sampling means, coupled to said receiving means, for sampling said parameters, to provide a first and second new sample value; means for displaying a first and second current sample value of said first and second parameters; first comparing means, coupled to said sampling means and said displaying means, for respectively comparing said first and second new sample values and said first and second current sample value, and for providing a first and second comparision signal; second comparing means, coupled to said first comparing means, for respectively comparing said first and second comparison signal with a first and second predetermined threshold, and for limiting changes in said first and second current sample value to a predetermined maximum change.
Claim 3
Dependent Claim
33 words
The device of claim 1, wherein said first parameter is forward radio frequency power measured at a antenna of a radio transmitter, and said second parameter is reflected power measured at said antenna.
Claim 4
Dependent Claim
22 words
The device of claim 1, which includes a second plurality of display segments for indicating the full range of said first parameter.
Claim 5
Dependent Claim
14 words
The device of claim 3, wherein said display segments comprise liquid crystal display segments.
Claim 6
Dependent Claim
13 words
The device of claim 3, wherein said display segments comprise light emitting diodes.
Claim 7
Dependent Claim
80 words
The device of claim 1, wherein said display means comprises a plurality of display segments each having a first and second display state, said segments being changed from said first state to said second state in response to an increase in said first current sample value, and said segments being changed from said second state to said first state in response to an increase in said second current sample value, whereby said first and second sample values are simultaneously displayed.
Claim 8
Dependent Claim
23 words
The device of claim 6, wherein said first display state is an "off" state, and said second display state is an "on" state.
Claim 9
Dependent Claim
14 words
The device of claim 6, wherein said display segments comprise liquid crystal display segments.
Claim 10
Dependent Claim
13 words
The device of claim 6, wherein said display segments comprise light emitting diodes.
Claim 11
Dependent Claim
17 words
The device of claim 6, wherein predetermined maximum change comprises a predetermined number of plurality of segments.
Claim 12
Dependent Claim
13 words
The device of claim 10, wherein said predetermined maximum change is one segment.
Claim 13
Dependent Claim
27 words
The device of claim 1, which further includes means for measuring said first and second parameters and providing a respective first and second indication of instantaneous value.
Claim 14
Dependent Claim
38 words
The device of claim 12, wherein said sampling means samples said instanteous values and determines the maximum value from a group of a predetermined number of of said instantaneous values, which maximum value constitutes said new sampled value.
Claim 15
Dependent Claim
36 words
The device of claim 1, wherein said first comparing means determines whether said new sample value is greater than, less that or equal to said current sample value thereby indicating an increasing, decreasing or zero change.
Claim 16
Dependent Claim
30 words
The device of claim 14, wherein said second comparing means compares an increasing change with a predetermined maximum increasing change and a decreasing change with a predetermined maximum decreasing change.
Claim 17
Dependent Claim
18 words
The device of claim 15, wherein said predetermined maximum increasing change and said maximum decreasing change are equal.
Claim 18
Dependent Claim
15 words
The device of claim 1, wherein said first and second comparing means comprises a microprocessor.
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) | 1990-10-26 | 1991-04-27 | 1991-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-26 | 1995-04-27 | 1995-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-26 | 1999-04-27 | 1999-10-27 | $7700.00 | Window Closed / Lapsed |