Patent ID: 6937734
Filing Date: 2005-08-30
Classification: H04S

Abstract:
1. A mute apparatus comprising: a plurality of mute operation switches each operative to assume two operation states consisting of a mute-on state and a mute-off state; a mute executing switch operative to assume two executing states consisting of a mute-on state and a mute-off state; mute switch control data generating means for generating mute switch control data elements indicative of said operation states of said mute operation switches; control data determining means for determining whether said mute executing switch is to assume said mute-on or mute-off state on the basis of said mute switch control data elements; mute switch control means for having said mute executing switch selectively assume said mute-on and mute-off states on the basis of said mute-on or mute-off state determined by said control data determining means, mute switch control data storing means for storing said mute switch control data elements; and mute switch control data operation means for performing an operation between said mute switch control data elements generated by said mute switch control data generating means and said mute switch control data elements currently stored in said mute switch control data storing means to generate mute switch control data elements; and in which said mute switch control data storing means is operated to store said mute switch control data elements obtained as a result of said operation performed by said mute switch control data operation means, and said control data determining means is operated to determine whether said mute executing switch is to assume said mute-on or mute-off state on the basis of said mute switch control data elements obtained as a result of said operation performed by said mute switch control data operation means.