WIRED REMOTE CONTROL DEVICE

PURPOSE:To facilitate handling a device and produce it with a low cost, by switching automatically the control of sound volume in accordance with the type and the voltage of a plug inserted to a jack shared between an earphone and a remote control transmiter of the device body. CONSTITUTION:When a d...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: WATABE KOUJI, SATOU HITOSHI
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:PURPOSE:To facilitate handling a device and produce it with a low cost, by switching automatically the control of sound volume in accordance with the type and the voltage of a plug inserted to a jack shared between an earphone and a remote control transmiter of the device body. CONSTITUTION:When a double-pole plug 8 connected to an earphone 10 is inserted to a jack 7, a changeover switch 6 interlocking with the jack 7 is switched to the side of a contact (c), and terminals (g) and (h) of the jack 7 are short-circuited. Therefore, the voltage applied to a point (a) is lower than a reference voltage, and a changeover switch 5 is switched to the side of a contact (d), and the voice output is controlled by a control volume 3 provided in the device. When a triple-pole plug 9 connected to a remote control transmitter 11 is inserted to the jack 7, the changeover switch 6 interlocking with the jack 7 is switched to the side of the contact (c), the voltage applied to the point (a) is higher than the reference voltage by the internal resistance of the remote control transmitter 11, and the switch 5 is switched to the side of a contact (e), and the voltage generated by a volume circuit 13 of the transmitter 11 is transmitted to the volume of the device body, and the sound volume is controlled.