초록 ▼

A two-way data communication device such as a data ready cellular telephone, a two-way pager, or a telephone communicates via a two-way data communication network with a server computer on a computer network that has an interface to the two-way data communication network, i.e, is coupled to the two-

A two-way data communication device such as a data ready cellular telephone, a two-way pager, or a telephone communicates via a two-way data communication network with a server computer on a computer network that has an interface to the two-way data communication network, i.e, is coupled to the two-way data communication network. For example, the computer network can be a corporate wide area network, a corporate local-area network, the Internet, or any combination of computer networks. The two-way data communication device utilizes a client module to transmit message including a resource selector chosen by the user to a server on a server computer on the computer network. The server processes the message and transmits a response over the two-way data communication network to the client module. The client module interprets the response and presents the response to the user via a structured user interface. Alternatively, the user transmits a request that directs the server to transmit the response to the request to another location or to another user.

대표청구항 ▼

A two-way data communication device such as a data ready cellular telephone, a two-way pager, or a telephone communicates via a two-way data communication network with a server computer on a computer network that has an interface to the two-way data communication network, i.e, is coupled to the two-

A two-way data communication device such as a data ready cellular telephone, a two-way pager, or a telephone communicates via a two-way data communication network with a server computer on a computer network that has an interface to the two-way data communication network, i.e, is coupled to the two-way data communication network. For example, the computer network can be a corporate wide area network, a corporate local-area network, the Internet, or any combination of computer networks. The two-way data communication device utilizes a client module to transmit message including a resource selector chosen by the user to a server on a server computer on the computer network. The server processes the message and transmits a response over the two-way data communication network to the client module. The client module interprets the response and presents the response to the user via a structured user interface. Alternatively, the user transmits a request that directs the server to transmit the response to the request to another location or to another user. njection signal; and a controller to independently generate said first and second control signals to form said ad-hoc uplink and downlink channel pair. 2. The apparatus of claim 1 wherein said main frequency synthesizer comprises a phase locked loop. 3. The apparatus of claim 2 wherein said offset frequency synthesizer comprises a phase locked loop. 4. A mobile terminal comprising: a receiver receiving signals transmitted from a remote source on a receive channel and converting said received signals to a different frequency by mixing said received signals with an injection signal; a transmitter modulating a carrier signal and transmitting said modulated carrier signal on a transmit channel selected independently from said receive channel, said receive channel and said transmit channel forming a channel pair having a variable frequency offset; and a frequency synthesizer comprising: a main frequency synthesizer generating said first frequency based on a reference clock input signal and a first control signal, said first frequency used as one of a carrier signal for signals transmitted on said uplink channel and an injection signal for signals received on said downlink channel; an offset frequency synthesizer generating a variable offset frequency based on said reference clock input signal and a second control signal: a mixer combining said first frequency with said variable offset frequency to produce said second frequency, said second frequency used as the other one of said carrier signal and said injection signal, and a controller to independently generate said first and second control signals to form an ad-hoc uplink and downlink channel pair. 5. The mobile terminal of claim 4 wherein said controller computes a value for said second control signal based on a frequency difference between said uplink channel assignment and said downlink channel assignment. 6. The mobile terminal of claim 4 wherein said controller independently controls said first and second control signals, thereby providing independent control of said first and second frequencies. 7. A method for generating first and second output signals at different frequencies, said first and second output signals used to form an ad-hoc uplink and downlink channel pair, said method comprising: generating a first output signal at a first selected frequency based on a first control signal, said first output signal being used as one of a carrier signal for signals transmitted on said uplink channel and an injection signal for signals received on said downlink channel; generating an offset signal at a selectable offset frequency based on a second control signal; mixing said offset signal with said first output signal to generate a second output signal at a second selected frequency, wherein said first and second output signals have a variable frequency offset based on said second control signal, and said second output signal being used as the other one of said carrier signal and said injection signal; and independently generating said first and second control signals to form said ad-hoc uplink and downlink channel pair. 8. The method of claim 7 further comprising changing said first selected frequency of said first output signal responsive to a change in said first control signal. 9. The method of claim 8 further comprising changing said offset frequency responsive to a change in said second control signal. 10. The method of claim 9 wherein changing said offset frequency responsive to a change in said second control signal comprises changing said offset frequency by an amount corresponding to said change in said first selected frequency of said first output signal so that said second selected frequency of said second output signal remains the same both before and after said change in said first output signal. 11. The method of claim 7 further comprising changing said offset frequency responsive to a change in said second control signal. 12. A method for