EP0545088A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Radio telephone system with data communication capability and radio communication method
Assignee: NEC Corp
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Filing: 1992-11-04
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Granted: —
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Expires: 2012-11-04
Abstract
Abstract A portable radio telephone system includes a small and light radio telephone device (100) and a charger (200) for charging a storage battery in the radio telephone device. The charger has a connector (600) for connection to a data communication device (300). A data signal received by a radio circuit and converted by a baseband circuit in the radio telephone device is supplied to a data interface, which superposes the data signal on charging electric energy. The data signal is then supplied through charging terminals of the radio telephone device and charging terminals of the charger. In the charger, the data signal is converted by a data interface into a signal for transmission through the connector to the data communication device.
Inventors
- 👤 Kohei c/o NEC Corporation Nishiyama
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 15:27
CPC Classifications
H; H04; H04W; H04W88/00; H04W88/02; H04B; H04B1/00; H04B1/38; H04B1/40; H04B1/403; H04B1/406; H04W52/00; H04W52/02; H04W52/0209; H04W52/0261; H04W52/0296; Y; Y02; Y02D; Y02D30/00; Y02D30/70
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
199 words
A radio telephone system comprising: a radio telephone device for transmitting and receiving a data signal, said radio telephone device including: first power supply means for supplying electric energy; a first data interface connected to said first power supply means for converting the data signal; control means connected to said first data interface for controlling said data interface; a radio circuit for transmitting and receiving the data signal; a baseband circuit for converting the data signal into a baseband signal; and first charging terminal means connected to said first power supply means and said first data interface; charging means for supplying charging electric energy to said first power supply means, said charging means including: second power supply means for supplying charging electric energy to said first power supply means; second data interface connected to said second power supply means for converting a data signal; a connector connected to said data interface for connection to a data communication device; and second charging terminal means connected to said second power supply means and said second data interface for transmitting the charging electric energy from said second power supply means through said first charging terminal means to said first power supply means.
Claim 2
Dependent Claim
68 words
A radio telephone system as claimed in claim 1, wherein said radio telephone device includes a first impedance circuit for giving said first power supply means a sufficiently high impedance with respect to frequencies higher than a predetermined frequency, and said charging means includes a second impedance circuit for giving said second power supply means a sufficiently high impedance with respect to frequencies higher than a predetermined frequency.
Claim 3
Dependent Claim
34 words
A radio telephone system as claimed in claim 1 or 2, wherein said radio telephone device further includes key inputting means connected to said control means for applying command signals to the control means.
Claim 4
Dependent Claim
184 words
A radio communication method comprising the steps of: transmitting and receiving a data signal by a radio telephone device, said step of transmitting and receiving including the steps of: supplying electric energy by first power supply means; converting the data signal by a first data interface connected to said first power supply means; transmitting and receiving the data signal by a radio circuit; converting the data signal into a baseband signal by a baseband circuit; and charging to said first power supply means and said first data interface; supplying charging electric energy to said first power supply means by a charging means, said the step of supplying charging electric energy including the steps of: supplying charging electric energy to said first power supply means by second power supply means; converting a data signal by second data interface connected to said second power supply means; transmitting the charging electric energy from said second power supply means to said first power supply means through said first charging terminal means by second charging terminal means connected to said second power supply means and said second data interface.
References Cited (Backward Citations)
No citation records indexed.
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