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AssigneeKYOCERA Corporation
InventorsKazuya Kiuchi, Yuzuru Masuda, Hideto Ookita, Kazuo Nagamachi, Yoshio Sasaki
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The present invention seeks to provide a dual mode mobile satellite communication unit, which requires low communication cost and very little battery power, does not require always carrying a large unit frame and does not always provide great weight burden on the user. A terrestrial communication portable unit is detachably mounted in the mobile satellite communication unit. The mobile satellite communication unit as base unit does not include a key operating section, a display section and a speech transducer section having a microphone and a loudspeaker, and utilizes those mechanically assembled on the portable unit side for keying and other operations. In an interlocked relation to the removal of the portable unit, the stand-by state of the base unit is turned off. It is thus possible to avoid wasteful battery power consumption on the base unit side. Using a hollow cylindrical antenna, the inner cylindrical space thereof is used as a battery insertion space, thus dispensing with an independent battery mounting space. Very great space saving is thus attainable particularly in a mobile satellite communication unit, which requires high power and large size battery power supply.
A dual mobile satellite communication unit providing a mobile terrestrial communication unit function in addition to a mobile satellite communication unit function, comprising:
A mobile satellite communication base unit not including at least a key operating section, a display section and a speech transducer section having a microphone and a loudspeaker, capable of providing a mobile satellite communication unit function and including a signal transceiver section for transmitting and receiving converted waves of transmission and reception signals to and from a separate terrestrial communication portable unit, said base unit utilizing a key operating section and speech transducer section of the portable unit via the signal transceiver section during mobile satellite communication.
A dual mode satellite communication unit comprising:
A mobile satellite communication unit utilizing satellites orbiting around the earth as network switching nodes or a dual mode mobile satellite communication unit providing a mobile terrestrial communication unit function in addition to a mobile satellite communication unit function, wherein the unit comprises an antenna section including a microstrip planar antenna formed at an end, the antenna section having a hollow cylindrical shape defining a battery insertion space underneath the microstrip antenna.
A mobile satellite communication unit utilizing satellites orbiting around the earth as network switching nodes or a dual mode mobile satellite communication unit providing a mobile terrestrial communication unit function in addition to a mobile satellite communication unit function;
A mobile satellite communication unit utilizing satellites orbiting around the earth as network switching nodes or a dual mode mobile satellite communication unit providing a mobile terrestrial communication unit function in addition to a mobile satellite communication unit function, wherein the unit has a front mounting section for mounting a separate mobile terrestrial communication unit and a large thickness portion formed on one side behind the mounting section, a hollow cylindrical antenna being inserted in the large thickness portion, an inner cylindrical space of the antenna being a battery insertion space.
A mobile satellite communication base unit not including at least a key operating section, a display section and a speech transducer section having a microphone and a loudspeaker, capable of providing a mobile satellite communication unit function, wherein a recess and a projection are provided as mechanical couplers on the base unit for mechanical coupling, and electric connectors are provided on the base unit for electrically connecting a key operation section, a display section and a speech transducer section on a side of a separate terrestrial communication portable unit and a mobile satellite communication unit function section on the side of the base unit to one another when the base unit and the terrestrial communication portable unit are mechanically coupled to one another.
Dependencies are inferred from the claim text.