US5450618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Full duplex and half duplex communication unit with volume setting
Assignee: Motorola Solutions Inc
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Filing: 1992-04-30
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Granted: 1995-09-12
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Expires: 2012-04-30
Abstract
Abstract A communication unit is improved to comprise a volume/mode selection switch, mode detector, volume level setting detector, and a processor. The mode detector and the volume level setting detector monitor the volume/mode selection switch to determine, respectively, the selected mode of operation and the volume level setting. The processor, which is operably coupled to the mode detector and the volume level setting detector, processes the mode of operation and the volume level setting based on the mode of operation selected.
Inventors
- 👤 Marc C. Naddell
- 👤 Gary W. Grube
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:38
CPC Classifications
H; H04; H04M; H04M19/00; H04M19/02; H04M19/04; H04B; H04B1/00; H04B1/38; H04B1/40; H04B1/401; H04M19/042
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
158 words
An improved communication unit that operates in at least one communication system, wherein the communication unit includes a receiver, a controlled audible level device, an audio amplifier, and a speaker, the communication unit is improved to comprise: a volume/mode selection switch, wherein the volume/mode selection switch, when in a first predetermined position, selects an on/off mode of operation, and, when in a second predetermined position, selects a full duplex mode of operation, and, when in a third predetermined position, selects a half duplex mode of operation and a controlled volume level; and a processor that is operably coupled to the volume/mode selection switch, wherein the processor detects the mode of operation and when the half duplex mode of operation is selected, the processor provides the controlled volume level to the controlled audible level device, and when the full duplex mode of operation is selected, the processor provides a predetermined volume level setting to the controlled audible level device.
Claim 2
Dependent Claim
158 words
An improved communication unit that operates in at least one communication system, wherein the communication unit includes a receiver, a controlled audible level device, an audio amplifier, and a speaker, the communication unit is improved to comprise: a volume/mode selection switch, wherein the volume/mode selection switch, when in a first predetermined position, selects an on/off mode of operation, and, when in a second predetermined position, selects a full duplex mode of operation, and, when in a third predetermined position, selects a half duplex mode of operation and a controlled volume level; and a processor that is operably coupled to the volume/mode selection switch, wherein the processor detects the mode of operation and when the half duplex mode of operation is selected, the processor provides the controlled volume level to the controlled audible level device, and when the full duplex mode of operation is selected, the processor provides a predetermined volume level setting to the controlled audible level device.
Claim 3
Dependent Claim
154 words
In a communication unit that operates in at least one communication system, wherein the communication unit includes a receiver, a processor, a controlled audible level device, an audio amplifier, a speaker and a volume/mode selection switch, a method for the communication unit to process full duplex and half duplex communications at controlled volume level settings, the method comprises the steps of: a) determining, by the processor, the mode of operation selected on the volume/mode selection switch; b) when the volume/mode selection switch is set for full duplex communication, processing, by the processor, full duplex operation and setting the controlled audible level device to a predetermined volume level independent of a volume setting on the volume/mode selection switch; c) when the volume/mode selection switch is set for half duplex communication, processing, by the processor, half duplex operation and setting the controlled audible level device to a volume level as set on the volume/mode selection switch.
Claim 4
Dependent Claim
154 words
In a communication unit that operates in at least one communication system, wherein the communication unit includes a receiver, a processor, a controlled audible level device, an audio amplifier, a speaker and a volume/mode selection switch, a method for the communication unit to process full duplex and half duplex communications at controlled volume level settings, the method comprises the steps of: a) determining, by the processor, the mode of operation selected on the volume/mode selection switch; b) when the volume/mode selection switch is set for full duplex communication, processing, by the processor, full duplex operation and setting the controlled audible level device to a predetermined volume level independent of a volume setting on the volume/mode selection switch; c) when the volume/mode selection switch is set for half duplex communication, processing, by the processor, half duplex operation and setting the controlled audible level device to a volume level as set on the volume/mode selection switch.
References Cited (Backward Citations)
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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) | 1998-09-11 | 1999-03-13 | 1999-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-09-11 | 2003-03-13 | 2003-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-09-11 | 2007-03-13 | 2007-09-12 | $7700.00 | Window Closed / Lapsed |