EP0494780A2 — An adapter unit for adaptively supplying a portab…

Claim 1

Independent Claim 210 words

A radio telephone apparatus comprising a portable radio unit (200) having receiving means (202, 234) for receiving radio frequency signals, demodulating means (231) coupled to the receiving means for demodulating the radio frequency signals into audio signals, an earpiece (213) coupled to the demodulating means for outputting the audio signals, a mouthpiece (214) for inputting speech signals, modulating means (232) coupled to the mouthpiece for modulating the speech signals into radio frequency signals, transmitting means coupled to the modulating means for transmitting the radio frequency signals (233, 202, 234), and an adapter unit (1) attachable to the portable radio unit, having a speaker (900), a microphone (700) and a hands-free circuit (70) coupled to the second contact type connecter means, the speaker, and the microphone for controlling the level of signals output from the speaker in response to the level of signals input to the microphone, characterised by: first computer means (T92, T62) on the portable unit and co-operating second connecter means (T91, T61) on the adapter, whereby the hands-free circuit is activated in response to a contact between the first connecter means (T92, T62) and the second connecter means (T91, T61) in the event that the portable radio is attached to the adapter unit whilst communication is in progress.

Claim 2

Dependent Claim 210 words

A radio telephone apparatus comprising a portable radio unit (200) having receiving means (202, 234) for receiving radio frequency signals, demodulating means (231) coupled to the receiving means for demodulating the radio frequency signals into audio signals, an earpiece (213) coupled to the demodulating means for outputting the audio signals, a mouthpiece (214) for inputting speech signals, modulating means (232) coupled to the mouthpiece for modulating the speech signals into radio frequency signals, transmitting means coupled to the modulating means for transmitting the radio frequency signals (233, 202, 234), and an adapter unit (1) attachable to the portable radio unit, having a speaker (900), a microphone (700) and a hands-free circuit (70) coupled to the second contact type connecter means, the speaker, and the microphone for controlling the level of signals output from the speaker in response to the level of signals input to the microphone, characterised by: first computer means (T92, T62) on the portable unit and co-operating second connecter means (T91, T61) on the adapter, whereby the hands-free circuit is activated in response to a contact between the first connecter means (T92, T62) and the second connecter means (T91, T61) in the event that the portable radio is attached to the adapter unit whilst communication is in progress.

Claim 3

Dependent Claim 50 words

A radio telephone apparatus according to claim 1 further characterised in that the hands-free circuit is not activated in response to a contact between the first connecter means and the second connecter means unless the portable radio unit is powered up or when it is attached to the adapter unit.

Claim 4

Dependent Claim 111 words

A radio telephone apparatus according to claim 1 or claim 2 further characterised in that the portable radio unit comprises first power supply means (40) for charging a rechargeable battery of the portable radio unit with electric power in the event that the portable radio unit being not in the communication state is connected to the adapter unit and second powersupply means (30) forsup- plying the portable radio unit with electric power in the event that the portable radio unit being in the communication state is attached to the adapter unit, the power supply capacity of the second power supply means being larger than that of the first power supply means.

Claim 5

Dependent Claim 77 words

A radio telephone apparatus according to any preceding claim further characterised in that the adapter unit comprises a terminal (Tb) for connecting an external data device with the adapter, switch means (99) responsive to a control signal for connecting the terminal to the second contact type connecter means, whereby a two-way data transmission path is established between the external data device and the portable radio unit when the portable radio unit is connected to the adapter unit.

Claim 6

Dependent Claim 132 words

An adapter unit (1) for use with a portable radio unit (200) coupled to the adapter unit and having a rechargeable battery (100) for supplying the portable radio unit with electric power, characterised by: first power supply means (40) for charging the rechargeable battery with electric power in the event that the portable radio unit is not powered by the rechargeable batter when it is connected to the adapter unit; and second power supply means (30) for supplying the portable radio unit with electric power in the event that the portable radio unit is powered by the rechargeable battery and in a communication state when it is attached to the adapter unit, the power supply capacity of the second power supply means being larger than that of the first power supply means.

Claim 7

Dependent Claim 132 words

An adapter unit (1) for use with a portable radio unit (200) coupled to the adapter unit and having a rechargeable battery (100) for supplying the portable radio unit with electric power, characterised by: first power supply means (40) for charging the rechargeable battery with electric power in the event that the portable radio unit is not powered by the rechargeable batter when it is connected to the adapter unit; and second power supply means (30) for supplying the portable radio unit with electric power in the event that the portable radio unit is powered by the rechargeable battery and in a communication state when it is attached to the adapter unit, the power supply capacity of the second power supply means being larger than that of the first power supply means.

Claim 8

Dependent Claim 47 words

An adapter unit according to claim 5, characterised in that the adapter unit comprises a hands-free circuit (700) for controlling the level of signals output from a speaker of the adapter unit in response to the level of signals input to a microphone of the adapter unit.

Claim 9

Dependent Claim 36 words

An adapter unit according to claim 6, characterised in that the hands-free circuit is activated in response to a connection between the adapter unit and the portable radio unit when it is in the communication state.

Claim 10

Dependent Claim 38 words

An adapter unit according to claim 6 or claim 7, characterised in that the hands-free circuit is not activated in response to a connection between the adapter unit and the portable radio unit unless communication is in progress.

Claim 11

Dependent Claim 89 words

An adapter unit according to any of claims 5 to 8, characterised in that the adapter unit comprises a terminal (Tb) for connecting an external data device with the adapter, switch means (88) responsive to a control signal for connecting the terminal to a first connecter means, whereby the external data device and the portable radio unit in response to a contract between the first connecter and a second connecter of the portable radio unit in the vent that the portable radio unit is attached to the adapter unit.

An adapter unit for adaptively supplying a portable radio telephone with power

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