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US 6,675,023 B1Granted
Stand-by system
AssigneeNEC Corporation
InventorKiyoshi Tamukai
Life of this patent
Estimating the term…
Abstract
A flip-flop circuit 23 receives timing signals from a plurality of waiting timer circuits 24 and 25, and generates a mode switching signal to a radio unit 21 and a control unit 22. The radio unit 21 and control unit 22 are common to a plurality of systems for transmission and reception of data from and by an antenna 26.
Claims20
A stand-by system adopted in a portable terminal, comprising:
- a common antenna for transmitting and receiving data to and from a plurality of systems;
- and
- a waiting control circuit for providing a mode switching signal to said plurality of systems to render these systems to be in a stand-by state at the same time.
A stand-by system for a plurality of systems comprising:
- a radio unit common to the plurality of systems;
- a control unit common to the plurality of systems;
- timing signal generating means for generating a plurality of waiting timing signals for the plurality of systems;
- and
- mode selecting means for generating a mode selection signal to select a system function of the plurality of systems in the radio unit and the control unit on the basis of the waiting timing signals from the timing signal generating means for placing at least two of the plurality of systems into a stand-by state at the same time.
2 more elements
A stand-by system for a plurality of systems comprising:
- a body comprising:
- a radio unit common to the plurality of systems;
- a control unit common to the plurality of systems;
- timing signal generating means for generating a plurality of waiting timing
- signals for the plurality of systems;
- mode selecting means for generating a mode selection signal to select a system function of the plurality of systems in the radio unit and the control unit on the basis of the waiting timing signals from the timing signal generating means for placing at least two of the plurality of systems into a stand-by state at the same time;
- a receiver operably connected to said body;
- a microphone operably connected to said body;
- and
- an antenna operably connected to said body.
7 more elements
A portable terminal comprising:
- a radio system for transmitting and receiving from a plurality of communication systems;
- and
- a waiting control circuit in communication with said radio system that generates a mode switching signal,
- wherein said radio system is responsive to said mode switching signal to perform a stand-by function for each of said plurality of communication systems at the same time.
1 more element
Dependencies are inferred from the claim text.