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    • 41. 发明专利
    • Absence pretense telephone set
    • 免提电话设置
    • JPS59200563A
    • 1984-11-13
    • JP7329783
    • 1983-04-26
    • Nec Corp
    • SAYANAGI ATSUTAKETOMINAGA HIROSHI
    • H04M1/00H04M1/64H04M1/665
    • H04M1/665
    • PURPOSE:To shut off telephone calls calling indiscriminately by selecting only a specific calling subscriber who is taught previously a password and allowing an incoming call from said subscriber. CONSTITUTION:A changeover switch 3 is changed over when a telephone set 2 is in on-hook state, and a telephone circuit 1 is connected to circuits succeeding a ringback tone detecting circuit 4. When there is an incoming telephone call, the ringback tone is detected and transmitted to a sequence control circuit 9. The sequence control circuit 9 makes an answer by operating an off-hook circuit 5. A message transmitting circuit 6 is operated successively to send out a message of absence of the incoming subscriber. Then, the voice of a calling subscriber is discriminated and collated with the predetermined specific password, and a ringing bell 8 is allowed to sound only when the discriminated voice is coincident, informing the incoming subscriber of the telephone incoming.
    • 目的:通过仅选择以前教过的密码并允许来自所述用户的来电的特定呼叫用户来关闭不加区别的电话呼叫。 构成:当电话机2处于挂机状态时,转换开关3被切换,并且电话电路1连接到回铃音检测电路4之后的电路。当有来电电话时,回铃音为 检测并发送到序列控制电路9.序列控制电路9通过操作摘机电路5作出答复。消息发送电路6被连续地操作以发送不存在进入用户的消息。 然后,主叫用户的语音被识别并与预定的特定密码进行比对,并且只有当鉴别出的语音一致时才允许振铃8发声,通知来话用户电话进入。
    • 44. 发明专利
    • ABSENCE PRETENDING TELEPHONE SET
    • JPS57131157A
    • 1982-08-13
    • JP1644681
    • 1981-02-06
    • NIPPON ELECTRIC CO
    • SANAGI ATSUTAKETOMINAGA HIROSHI
    • H04M1/64H04M1/665
    • PURPOSE:To execute an answer of absence in case of regular incoming, and after that, to display incoming only in case when a specific number has been transmitted by means of a push-button. CONSTITUTION:When a telephone set 2 is in an on-hook state, a changeover switched to the lower side. When there is a call from a telephone line 1 in this state, it is detected by a ringing tone detecting circuit 4, a sequence controlling circuit 9 forms a call state to a calling party by operating an off-hooking circuit 5, and sends out a message of absence from a message sending-out circuit 6. After that, when the calling party sends out a special number by operating a push-button of the telephone set, it is received by a push-button signal receiving circuit 7, and when it coincides with a number decided in advance, telephone incoming is informed to a called party by ringing a call bell 8. When the called party takes up a transmitter and receiver of the telephone set 2, the changeover switched is switched, and the telephone line 1 is connected to the telephone set 2.