发明授权
US06208867B1 Portable terminal system, option apparatus for portable terminal unit, and method for connecting portable terminal unit and option apparatus for portable terminal unit
失效
便携式终端系统，便携式终端单元的选择装置，以及用于便携式终端单元的便携式终端单元和可选装置的连接方法
- 专利标题： Portable terminal system, option apparatus for portable terminal unit, and method for connecting portable terminal unit and option apparatus for portable terminal unit
- 专利标题（中）： 便携式终端系统，便携式终端单元的选择装置，以及用于便携式终端单元的便携式终端单元和可选装置的连接方法
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申请号： US09062101申请日： 1998-04-17
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公开(公告)号： US06208867B1公开(公告)日： 2001-03-27
- 发明人: Takeshi Kobayashi
- 申请人： Takeshi Kobayashi
- 优先权： JP9-109324 19970425
- 主分类号： H04Q720
- IPC分类号： H04Q720
摘要：
A portable terminal system is arranged by an option apparatus 1 for a portable terminal unit and a portable terminal unit. The option apparatus 1 for the portable terminal unit communicates with a base station by using electromagnetic waves by a first radio transmitter/receiver circuit 11, and further communicates with the portable terminal unit 2 by using infrared radiation by a first infrared type connection apparatus 16. On the other hand, the portable terminal unit 2 communicates with the option apparatus 1 used with the portable terminal unit by using infrared radiation by a second infrared type connection apparatus. Since the option apparatus 1 for the portable terminal unit is connected to the portable terminal 2 by way of the infrared radiation, the connection works can be readily performed, and further various types of portable terminal units can be mutually connected to various sorts of option apparatuses for portable terminal units.