Acoustic Signal Transmission Method And Acoustic Signal Transmission Apparatus

An information communication apparatus comprising:

• a transmission apparatus transmitting both audible sound signals and information signals;
• and
• a receiving apparatus, wherein
• the transmission apparatus comprises:
• multiple channels through which the audible sound signals are transmitted;
• one or more signal synthesizing units which, with regard to each of the channels, electrically synthesize the audible sound signals corresponding to each of the channels and machine operation control signals for controlling a machine and which generate synthesized electric signals with regard to each of the channels;
• and
• a transmission unit transmits the synthesized electric signals through a transmission path with regard to each of the channels,
• the receiving apparatus comprises;
• one or more receiving units receiving the synthesized electric signals through the transmission path with regard to each of the channels;
• an extraction apparatus extracting said machine operation control signals from the synthesized electric signals with regard to each of the channels;
• and
• a majority logic section making a majority decision based on the machine operation control signals extracted with regard to each of the channels, and
• an operation of the machine is controlled based on the majority decision.

An information communication apparatus comprising:

• a transmission apparatus transmitting both audible sound signals and information signals via a transmission path;
• and
• a receiving apparatus, wherein
• the transmission apparatus comprises:
• a pair of channels for transmitting audible sound signals;
• a low-pass filter which is provided with regard to each of said two channels and which inputs signals passing through the channels;
• a high-pass filter which is provided with regard to each of said two channels and which inputs signals passing through the channels;
• a first mixer which synthesizes the signals from said two channels after passing through the high-pass filter;
• a pair of amplifiers which controls a gain and which inputs the synthesized signals;
• an amplifier control signal generation section complementarily controls the gains of the amplifiers in accordance with a machine operation control signal for controlling a machine;
• a second mixer which electrically synthesizes the complementarily controlled signals and the signals of the channels passed through the low-pass filter and which generates synthesized electric signals;
• and
• a transmission unit transmitting the synthesized electric signals through a transmission path,
• the receiving apparatus comprises:
• a receiving unit receiving the synthesized electric signals through the transmission path;
• a pair of high-pass filters inputting the synchronized electric signals with regard to each of the channels and which has approximately the same cutoff frequency as the high-pass filters of the transmission apparatus;
• and
• a comparator conducting a comparing operation between the signals of said two channels after passing through the high pass filters and extracting said machine operation control signals based on a comparison result, and
• the machine is controlled based on the a machine operation control extracted signals.

A transmission apparatus which is included in an information communication apparatus and which transmits both audible sound signals and information signals to a receiving apparatus via a transmission path, comprising:

• multiple channels through which the audible sound signals are transmitted;
• one or more signal synthesizing units which, with regard to each of the channels, electrically synthesize the audible sound signals corresponding to each of the channels and machine operation control signals for controlling a machine and which generate synthesized electric signals with regard to each of the channels;
• and
• a transmission unit transmits the synthesized electric signals through a transmission path with regard to each of the channels, wherein
• the receiving apparatus receives the synthesized electric signals and includes:
• one or more receiving units receiving the synthesized electric signals through the transmission path with regard to each of the channels;
• an extraction apparatus extracting said machine operation control signals from the synthesized electric signals with regard to each of the channels;
• and
• a majority logic section making a majority decision based on the machine operation control signals extracted with regard to each of the channels, and
• an operation of the machine is controlled based on the majority decision.

A receiving apparatus of an information communication apparatus which includes a transmission apparatus that transmits both audible sound signals and information signals to the receiving apparatus via a transmission path, wherein

• the transmission path includes:
• multiple channels through which the audible sound signals are transmitted;
• one or more signal synthesizing units which, with regard to each of the channels, electrically synthesize the audible sound signals corresponding to each of the channels and machine operation control signals for controlling a machine and which generate synthesized electric signals with regard to each of the channels;
• and
• a transmission unit transmits the synthesized electric signals through a transmission path with regard to each of the channels,
• the receiving apparatus receives the synthesized electric signals from the transmission apparatus and comprises:
• one or more receiving units receiving the synthesized electric signals through the transmission path with regard to each of the channels;
• an extraction apparatus extracting said machine operation control signals from the synthesized electric signals with regard to each of the channels;
• and
• a majority logic section making a majority decision based on the machine operation control signals extracted with regard to each of the channels, and
• an operation of the machine is controlled based on the majority decision.

A transmission apparatus which is included in an information communication apparatus and which transmits both audible sound signals and information signals to a receiving apparatus via a transmission path, comprising:

• a pair of channels for transmitting audible sound signals;
• a low-pass filter which is provided with regard to each of said two channels and which inputs signals passing through the channels;
• a high-pass filter which is provided with regard to each of said two channels and which inputs signals passing through the channels;
• a first mixer which synthesizes the signals from said two channels after passing through the high-pass filter;
• a pair of amplifiers which controls a gain and which inputs the synthesized signals;
• an amplifier control signal generation section complementarily controls the gains of the amplifiers in accordance with a machine operation control signal for controlling a machine;
• a second mixer which electrically synthesizes the complementarily controlled signals and the signals of the channels passed through the low-pass filter and which generates synthesized electric signals;
• and
• a transmission unit transmitting the synthesized electric signals through a transmission path, wherein
• the receiving apparatus which receives the synthesized electric signals includes:
• a receiving unit receiving the synthesized electric signals through the transmission path;
• a pair of high-pass filters inputting the synchronized electric signals with regard to each of the channels and which has the approximately same cutoff frequency as the high-pass filters of the transmission apparatus;
• and
• a comparator conducting a comparing operation between the signals of said two channels after passing through the high pass filters and extracting said machine operation control signals based on a comparison result, and
• the machine is controlled based on the a machine operation control extracted signals.

A receiving apparatus of an information communication apparatus which includes a transmission apparatus that transmits both audible sound signals and information signals to the receiving apparatus via a transmission path, wherein,

• the transmission apparatus includes:
• a pair of channels for transmitting audible sound signals;
• a low-pass filter which is provided with regard to each of said two channels and which inputs signals passing through the channels;
• a high-pass filter which is provided with regard to each of said two channels and which inputs signals passing through the channels;
• a first mixer which synthesizes the signals from said two channels after passing through the high-pass filter;
• a pair of amplifiers which controls a gain and which inputs the synthesized signals;
• an amplifier control signal generation section complementarily controls the gains of the amplifiers in accordance with a machine operation control signal for controlling a machine;
• a second mixer which electrically synthesizes the complementarily controlled signals and the signals of the channels passed through the low-pass filter and which generates synthesized electric signals;
• and
• a transmission unit transmitting the synthesized electric signals through a transmission path,
• the receiving apparatus receives the synthesized electric signals from the transmission apparatus and comprises:
• a receiving unit receiving the synthesized electric signals through the transmission path;
• a pair of high-pass filters inputting the synchronized electric signals with regard to each of the channels and which has the approximately same cutoff frequency as the high-pass filters of the transmission apparatus;
• and
• a comparator conducting a comparing operation between the signals of said two channels after passing through the high pass filters and extracting said machine operation control signals based on a comparison result, and
• the machine is controlled based on the a machine operation control extracted signals.