Circuit and method for automatically cutting off a

专利名称：Circuit and method for automatically cutting

off a speech path and converting to astandby state upon completion ofspeakerphone speech in a cordlesstelephone

发明人：Jong-Kwang Kim申请号：US08/674846申请日：19960703公开号：US06055309A公开日：20000425

摘要：A method for performing a speakerphone function in a cordless telephonecontemplates the steps of: forming a speakerphone speech path to enable thespeakerphone function in response to user input of a speakerphone key, detecting abusy tone signal received from a telephone line while the speakerphone speech path isformed, and automatically interrupting the speakerphone speech path to disable thespeakerphone function in response to detection of the busy tone signal. The

speakerphone speech path is automatically interrupted by controlling a hook relay todisconnect the telephone line from a voice processor that transmits and receives voicesignals, and controlling an electrical switch to disconnect the voice processor from amicrophone that generates the voice signals from a user's speech and a speaker thataurally transmits the voice signals received from the telephone line via the voiceprocessor.

申请人：SAMSUNG ELECTRONICS CO., LTD.

代理人：Robert E. Bushnell, Esq.

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