JPS5883849U

JPS5883849U - Mobile phone device

Info

Publication number: JPS5883849U
Application number: JP1981180251U
Authority: JP
Inventors: 野元　保幸
Original assignee: 株式会社東芝
Priority date: 1981-12-03
Filing date: 1981-12-03
Publication date: 1983-06-07

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来の送受話器を示す斜視図、第２図は従来の
携帯無線電話装置の一例を示す回路図、第３図は本考案
に係る携帯無線電話装置の送受話器の例を示す斜視図、
第４図は本考案に係る携帯無線電話装置の一実施例を示
すブロック図、第５図は第４図に示したブロック図の具
体例を示す回路図、第６図は本考案に係る携帯無線電話
装置の他の実施例を示すブロック図、第７図は第６図に
示したブロック図の具体例を示す回路図である。２・・・・・・電源端子、３・・・・・・検出制御回路
、４・・曲交流信号開閉回路、１０・・・・・・本体装
置、１１・・・品送受話器、月、Ｊ３・・・・・・多芯
コネクタジャック、ｐｌ、Ｒ３・・・・・・多芯コネク
タプラグ、Ｊ２・・・・・・イヤホンジャック、Ｒ２・
・・・・・イヤホンプラグ、Ｍ・・・・・・マイクロホ
ン、ＰＴＳ・・・・・・ブレストークスイッチ、ＳＰｌ
・・・・・・内蔵スピーカ、ＳＲ２・・・・・・外部ス
ピーカ、ＰＡ・・・・・・出力増幅器、ｃｌ、ｃ２・・
・・・・コンデンサ、Ｒ１，Ｒ２・旧・・抵抗、ＴＲ１
〜ＴＲ４，ＴＲ５〜ＴＲ１３・・・・・・トランジスタ
。（ＩＩオー１ｌ５Ｐ２１一一一」第４図FIG. 1 is a perspective view showing a conventional handset, FIG. 2 is a circuit diagram showing an example of a conventional portable radio telephone device, and FIG. 3 is a perspective view showing an example of a handset of a portable radio telephone device according to the present invention. figure,
FIG. 4 is a block diagram showing an embodiment of the portable radio telephone device according to the present invention, FIG. 5 is a circuit diagram showing a specific example of the block diagram shown in FIG. 4, and FIG. FIG. 7 is a block diagram showing another embodiment of the wireless telephone device. FIG. 7 is a circuit diagram showing a specific example of the block diagram shown in FIG. 2... Power supply terminal, 3... Detection control circuit, 4... Song AC signal opening/closing circuit, 10... Main unit, 11... Product handset, month, J3...Multi-core connector jack, pl, R3...Multi-core connector plug, J2...Earphone jack, R2...
... Earphone plug, M ... Microphone, PTS ... Breathtalk switch, SPl
...Built-in speaker, SR2...External speaker, PA...Output amplifier, cl, c2...
... Capacitor, R1, R2, old... Resistor, TR1
~TR4, TR5~TR13...Transistors. (II O1 l5P21 111) Figure 4

Claims

[Scope of utility model registration request]

(1) In a mobile radio telephone device that has a built-in speaker and can be connected to an external speaker and an input microphone via a connector, a detection circuit that detects the connection state of the connector and a detection result of the detection circuit are provided. 1. A portable radio telephone device comprising: an alternating current signal switching circuit for blocking transmission of audio signals to the built-in speaker based on the built-in speaker.

(2) The AC signal switching circuit consists of two transistors connected in parallel, each of which is biased in the forward direction and becomes conductive or non-conductive every half cycle of the opposite polarity of the audio signal based on the detection result of the detection circuit. A portable radio telephone device according to claim (1) of the utility model registration claim, which is connected to the portable radio telephone device.