发明名称 Foldable portable telephone set
摘要 A foldable portable telephone set which allows switching between a speech holding condition and a speaking condition without the necessity of an operation of a key thereby to prevent an operation in error. An open or closed condition of a cover section relative to a body section is detected by means of a reed switch provided on the cover section, a magnet provided on the body section, and a detection circuit for detecting an on- or off-state of the reed switch. A speech holding condition is established when it is detected that the cover section is closed during speech. In the speech holding condition, manually operable keys are covered with the body section and not exposed outside.
申请公布号 US5493690(A) 申请公布日期 1996.02.20
申请号 US19940266569 申请日期 1994.06.28
申请人 NEC CORPORATION 发明人 SHIMAZAKI, MAMORU
分类号 H04M1/03;H04M1/02;H04M1/10;H04M1/725;(IPC1-7):H04M1/19 主分类号 H04M1/03
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