会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 7. 发明专利
    • SOUND STORING SYSTEM USING DIGITAL TELEPHONE SET
    • JPS5840995A
    • 1983-03-10
    • JP13914081
    • 1981-09-03
    • FUJITSU LTDNIPPON TELEGRAPH & TELEPHONE
    • USAMI TAKASHISATOU HIROAKINISHIKADO IWAMASAUEHARA JIYOUJI
    • H04M3/42H04Q11/04
    • PURPOSE:To decrease the converting frequencies of audio signals for a digital telephone set, by storing the digitized audio signal to said digital telephone via a digital exchange and transmitting the audio signal stored by a sound storing device via the above-mentioned exchange directly to the digital telephone respectively. CONSTITUTION:In case a subscriber receives the audio service via a digital telephone set 21, the dial information is fed to a digital telephone exchange 30 with a dial operation. Then a connection line is formed by a controller 31 which gives a connection control to the exchange 30, and a digital audio signal arrives at a sound storing/reproducing device 33. This signal is separated with multiplexing into a digitized audio signal and a control signal through a multiplex separating device 34. These separated signals are written into the prescribed address positions of a storage device 39 from a transfer device 36 and under the control of a controller 40. Thus the digital audio signal is used from a terminal through the device 33. As a result, the circuit is simplified for a converting device 41 in the device 33. At the same time, the sound for service which is stored in a storing device can be reproduced while the audio signal is stored.