US5754625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio phone apparatus having compact cordless extension unit
Assignee: NEC Corp
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Filing: 1994-07-29
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Granted: 1998-05-19
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Expires: 2014-07-29
Abstract
Abstract In a radio telephone apparatus including a host phone unit, a cordless extension unit connected by radio waves to the host phone unit, and a charger unit for charging the cordless extension unit, a phone number inputting keyboard is provided in the charger unit.
Inventors
- 👤 Yukihiro Shimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:46
CPC Classifications
H; H04; H04M; H04M19/00; H04M1/00; H04M1/72; H04M1/725; H04M1/72502; H02; H02J; H02J7/00; H02J7/70; H02J7/731; H04B; H04B1/00; H04B1/38; H04B1/3827; H04B1/3883; H04M1/26; H04M1/27; H04M1/274; H04M1/2745; H04M1/2753; H04M1/2757; H04M1/02; H04M1/23; H04M1/60; H04M1/6033; H04M1/6041
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
175 words
A radio telephone apparatus comprising: a host phone unit; a cordless extension unit connected by radio waves to said host phone unit; and a charger unit for charging said cordless extension unit, said charger unit comprising: first and second terminals; a charging circuit connected to said first terminal; a phone number inputting means; and a data transmitter, connected to said phone number inputting means and said second terminal, for transmitting a phone number input from said phone number inputting means to said second terminal, said cordless extension comprising: third and fourth terminals; a battery connected to said third terminal; a charging operation detecting circuit, connected to said third terminal, for detecting that said battery is being charged by said charging circuit; a transceiver for carrying out a communication with said host phone unit; and a control circuit, connected to said transceiver, said charging operation detecting circuit, and said fourth terminal, said first and second terminals being electrically connected to said third and second terminals, respectively, when said cordless extension is accommodated in said charger unit.
Claim 2
Dependent Claim
175 words
A radio telephone apparatus comprising: a host phone unit; a cordless extension unit connected by radio waves to said host phone unit; and a charger unit for charging said cordless extension unit, said charger unit comprising: first and second terminals; a charging circuit connected to said first terminal; a phone number inputting means; and a data transmitter, connected to said phone number inputting means and said second terminal, for transmitting a phone number input from said phone number inputting means to said second terminal, said cordless extension comprising: third and fourth terminals; a battery connected to said third terminal; a charging operation detecting circuit, connected to said third terminal, for detecting that said battery is being charged by said charging circuit; a transceiver for carrying out a communication with said host phone unit; and a control circuit, connected to said transceiver, said charging operation detecting circuit, and said fourth terminal, said first and second terminals being electrically connected to said third and second terminals, respectively, when said cordless extension is accommodated in said charger unit.
Claim 3
Dependent Claim
159 words
An apparatus as set forth in claim 1, wherein said charger unit further includes: a storing means, connected to said data transmitter, for storing a correspondence table containing a correspondence between abbreviated phone numbers and actual phone numbers; said data transmitter comprising: means for determining whether or not an abbreviation key of said phone number inputting means is pushed; means for transforming an abbreviated dial number input from said phone number inputting means into an actual phone number with reference to the correspondence table stored in said storing means, when the abbreviation key of said phone number inputting means is pushed; means for transmitting the phone number transformed by said transforming means to said second terminal, when the abbreviation key of said phone number inputting means is pushed; and means for transmitting a phone number input from said phone number inputting means to said second terminal, when the abbreviation key of said phone number inputting means is not pushed.
Claim 4
Dependent Claim
40 words
An apparatus as set forth in claim 2, wherein said charger unit further includes a display unit, connected to said data transmitter, for displaying the phone number transformed by said transforming means and input from said phone number inputting means.
Claim 5
Dependent Claim
111 words
An apparatus as set forth in claim 1, wherein said control circuit comprises: means for determining whether or not said battery is being charged by said charging circuit; means for operating said transceiver to carry out a dialing operation with said host phone unit in accordance with phone information input from said phone number inputting means, when said battery is being charged by said charging circuit; means for operating said transceiver to establish a communication in accordance with the dialing operation when said battery is not charged by said charging circuit; and means for operating said transceiver to interrupt the communication when said battery is being charged by said charging circuit.
Claim 6
Dependent Claim
31 words
An apparatus as set forth in claim 1, wherein said charging operation circuit comprises a transistor powered by said battery, said transistor being controlled by a potential at said third terminal.
Claim 7
Dependent Claim
17 words
An apparatus as set forth in claim 1, wherein said phone number inputting means comprises a keyboard.
Claim 8
Dependent Claim
65 words
An apparatus as set forth in claim 1, wherein said charger unit further includes: a fifth terminal; and a loudspeaker connected to said fifth terminal, said loudspeaker being controlled by said data transmitter, said cordless extension unit including a sixth terminal connected to said transceiver, said fifth terminal being electrically connected to said sixth terminal, when said cordless extension is accommodated in said charger unit.
Claim 9
Dependent Claim
166 words
A radio telephone apparatus comprising: a host phone unit; a cordless extension unit connected by radio waves to said host phone unit; and a charger unit for charging said cordless extension unit, said charger unit comprising: a first and second terminals; a charging circuit connected to said first terminal; a keyboard; and a data transmitter, connected to said keyboard and said second terminal, for transmitting a phone number input from said keyboard to said second terminal, said cordless extension comprising: third and fourth terminals; battery connected to said third terminal; a charging operation detecting circuit, connected to said third terminal, for detecting that said battery is being charged by said charging circuit; a transceiver for carrying out a communication with said host phone unit; and a control circuit, connected to said transceiver, said charging operation detecting circuit, and said fourth terminal, said first and second terminals being electrically connected to said third and second terminals, respectively, when said cordless extension is accommodated in said charger unit.
Claim 10
Dependent Claim
166 words
A radio telephone apparatus comprising: a host phone unit; a cordless extension unit connected by radio waves to said host phone unit; and a charger unit for charging said cordless extension unit, said charger unit comprising: a first and second terminals; a charging circuit connected to said first terminal; a keyboard; and a data transmitter, connected to said keyboard and said second terminal, for transmitting a phone number input from said keyboard to said second terminal, said cordless extension comprising: third and fourth terminals; battery connected to said third terminal; a charging operation detecting circuit, connected to said third terminal, for detecting that said battery is being charged by said charging circuit; a transceiver for carrying out a communication with said host phone unit; and a control circuit, connected to said transceiver, said charging operation detecting circuit, and said fourth terminal, said first and second terminals being electrically connected to said third and second terminals, respectively, when said cordless extension is accommodated in said charger unit.
Claim 11
Dependent Claim
145 words
An apparatus as set forth in claim 8, wherein said charger unit further includes: a memory, connected to said data transmitter, for storing a correspondence table containing a correspondence between abbreviated phone numbers and actual phone numbers; said data transmitter comprising: determining unit to determine whether or not an abbreviation key of said keyboard is pushed; transforming unit to transform an abbreviated dial number input from said keyboard into an actual phone number with reference to the correspondence table stored in said memory, when the abbreviation key of said keyboard is pushed; first transmitting unit to transmit the phone number transformed by said transforming unit to said second terminal, when the abbreviation key of said keyboard is pushed; and second transmitting unit to transmit a phone number input from said keyboard to said second terminal, when the abbreviation key of said keyboard is not pushed.
Claim 12
Dependent Claim
37 words
An apparatus as set forth in claim 9, wherein said charger unit further includes a display unit, connected to said data transmitter, for displaying the phone number transformed by said transforming unit and inputted from said keyboard.
Claim 13
Dependent Claim
115 words
An apparatus as set forth in claim 8, wherein said control circuit comprises: determining unit to determine whether or not said battery is being charged by said charging circuit; first operating unit to operate said transceiver to carry out a dialing operation with said host phone unit in accordance with phone information input from said keyboard, when said battery is being charged by said charging circuit; second operating unit to operate said transceiver to establish a communication in accordance with the dialing operation when said battery is not charged by said charging circuit; and third operating unit to operate said transceiver to interrupt the communication when said battery is being charged by said charging circuit.
Claim 14
Dependent Claim
32 words
An apparatus as set forth in claim 8, wherein said charging operation circuit comprises a transistor powered by said battery, and said transistor being controlled by a potential at said third terminal.
Claim 15
Dependent Claim
65 words
An apparatus as set forth in claim 8, wherein said charger unit further includes: a fifth terminal; and a loudspeaker connected to said fifth terminal, said loudspeaker being controlled by said data transmitter, said cordless extension unit including a sixth terminal connected to said transceiver, said fifth terminal being electrically connected to said sixth terminal, when said cordless extension is accommodated in said charger unit.
Claim 16
Dependent Claim
175 words
A radio telephone apparatus comprising: a host phone unit; a cordless extension unit connected by radio waves to said host phone unit; and a charger unit for charging said cordless extension unit, said charger unit comprising: first and second terminals; a charging circuit connected to said first terminal; a phone number inputting device; and a data transmitter connected to said phone number inputting device and said second terminal to transmit a phone number input from said phone number inputting device to said second terminal, said cordless extension comprising; third and fourth terminals; a battery connected to said third terminal; a charging operation detecting circuit connected to said third terminal to detect that said battery is being charged by said charging circuit; a transceiver for carrying out a communication with said host phone unit; and a control circuit connected to said transceiver, said charging operation detecting circuit, and said fourth terminal, said first and second terminals being electrically connected to said third and second terminals, respectively, when said cordless extension is accommodated in said charger unit.
Claim 17
Dependent Claim
175 words
A radio telephone apparatus comprising: a host phone unit; a cordless extension unit connected by radio waves to said host phone unit; and a charger unit for charging said cordless extension unit, said charger unit comprising: first and second terminals; a charging circuit connected to said first terminal; a phone number inputting device; and a data transmitter connected to said phone number inputting device and said second terminal to transmit a phone number input from said phone number inputting device to said second terminal, said cordless extension comprising; third and fourth terminals; a battery connected to said third terminal; a charging operation detecting circuit connected to said third terminal to detect that said battery is being charged by said charging circuit; a transceiver for carrying out a communication with said host phone unit; and a control circuit connected to said transceiver, said charging operation detecting circuit, and said fourth terminal, said first and second terminals being electrically connected to said third and second terminals, respectively, when said cordless extension is accommodated in said charger unit.
Claim 18
Dependent Claim
173 words
An apparatus as set forth in claim 14, wherein said charger unit further includes: a storing device connected to said data transmitter to store a correspondence table containing a correspondence between abbreviated phone numbers and actual phone numbers; said data transmitter comprising: a determining device to determine whether or not an abbreviation key of said phone number inputting device is pushed; a transforming device to transform an abbreviated dial number input from said phone number inputting device into an actual phone number with reference to the correspondence table stored in said storing device, when the abbreviation key of said phone number inputting device is pushed; a transformed phone number transmitting device to transmit the phone number transformed by said transforming device to said second terminal, when the abbreviation key of said phone number inputting device is pushed; and an input phone number transmitting device to transmit a phone number input from said phone number inputting device to said second terminal, when the abbreviation key of said phone number inputting device is not pushed.
Claim 19
Dependent Claim
40 words
An apparatus as set forth in claim 15, wherein said charger unit further includes a display unit connected to said data transmitter to display the phone number transformed by said transforming device and input from said phone number inputting device.
Claim 20
Dependent Claim
122 words
An apparatus as set forth in claim 14, wherein said control circuit comprises: a determining device to determine whether or not said battery is being charged by said charging circuit; a transceiver operating device to operate said transceiver to carry out a dialing operation with said host phone unit in accordance with phone information input from said phone number inputting device, when said battery is being charged by said charging circuit; an establish operating device to operate said transceiver to establish a communication in accordance with the dialing operation when said battery is not charged by said charging circuit; and an interrupt operating device to operate said transceiver to interrupt the communication when said battery is being charged by said charging circuit.
Claim 21
Dependent Claim
31 words
An apparatus as set forth in claim 14, wherein said charging operation circuit comprises a transistor powered by said battery, said transistor being controlled by a potential at said third terminal.
Claim 22
Dependent Claim
17 words
An apparatus as set forth in claim 14, wherein said phone number inputting device comprises a keyboard.
Claim 23
Dependent Claim
65 words
An apparatus as set forth in claim 14, wherein said charger unit further includes: a fifth terminal; and a loudspeaker connected to said fifth terminal, said loudspeaker being controlled by said data transmitter, said cordless extension unit including a sixth terminal connected to said transceiver, said fifth terminal being electrically connected to said sixth terminal, when said cordless extension is accommodated in said charger unit.
References Cited (Backward Citations)
US4659878A
Cited
JPS6394748A
Cited
US5157710A
Cited
JPS63287239A
Cited
EP0303067A2
Cited
US4939770A
Cited
US4910761A
Cited
US5203020A
Cited
US5109537A
Cited
JPH02152351A
Cited
US5081668A
Cited
GB2230922A
Cited
US5148470A
Cited
US5123042A
Cited
JPH0421535A
Cited
US5327482A
Cited
GB2258121A
Cited
JPH05152990A
Cited
US5351283A
Cited
JPH06164468A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-05-18 | 2001-11-17 | 2002-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-05-18 | 2005-11-17 | 2006-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-05-18 | 2009-11-17 | 2010-05-19 | $7700.00 | Window Closed / Lapsed |