Transmitting method, receiving method, and communication method for bi-directional bus system, and bi-directional bus system

A receiving method for a bi-directional system in which a plurality of devices respectively including sub-devices adapted to execute the operation for a received command are connected to each other through a bi-directional bus,

• the receiving method comprising:
• receiving, through said bi-directional bus, a transmit signal having a frame structure consisting of an address field for specifying addresses of devices between which communication is carried out, and a data field for specifying a control command for a device or a sub-device, and including a route select code of a fixed length, inserted at a predetermined position of the data field, indicating a communication from a sub-device included in a device to any other device, a communication from a device to a sub-device included in any other device, or a communication from a device to any other device;
• detecting the route select signal from said transmit signal;
• and
• detecting on the basis of the detected route select code whether a communication carried out is a communication from a sub-device included in a device, a communication from a device to a sub-device included in any other device, or communication from a device to any other device.

A communication method for a bi-directional bus system in which a plurality of devices respectively including sub-devices adapted to execute the operation for a received control command are connected to each other through a bi-directional bus,

• wherein one frame of a transmit signal on said bi-directional bus consists of an address field for specifying addresses of devices between which communication is carried out, and a data field for specifying a control command for a device or a sub-device, and a route select code of a fixed length indicating a communication from a sub-device included in a device to any other device, a communication from a device to a sub-device included in any other device, or a communication from a device to any other device is inserted at a predetermined position of the data field,
• said communication method comprising:
• transmitting, through said bi-directional bus, the transmit signal in which the route select code is inserted,
• receiving the transmit signal through the bi-directional bus,
• detecting the route select code from the transmit signal, and
• detecting on the basis of the detected route select code whether a communication carried out is a communication from a sub-device included in a device to any other device, a communication from a device to a sub-device included in any other device, or a communication from a device to any other device.

A bi-directional bus system comprising a plurality of devices respectively including sub-devices adapted to execute the operation for a received control command and a bi-directional bus each of said plurality of devices comprising:

• transmit signal formation means for forming a transmit, signal having a frame structure consisting of an address field for specifying addresses of devices between which communication is carried out, and a data field for specifying a control command for a device or sub-device, and including a route select code of a fixed length, inserted at a predetermined position of the data field, indicating a communication from a sub-device included in a device to any other device, a communication from a device to a sub-device included in any other device, or a communication from a device to any other device;
• and
• bus output means for outputting, to said bi-directional bus, the transmit signal formed by said transmit signal formation means,
• said plurality of devices being connected to each other through said bi-directional bus.

A bi-directional bus system comprising a plurality of devices respectively including sub-devices adapted to execute the operation for a received control command, and a bi-directional bus, each of said plurality of devices comprising:

• bus input means for receiving, through said bi-directional bus, a transmit signal having a frame structure consisting of an address field for specifying addresses of devices between which communication is carried out, and a data field for specifying a control command for a device or a sub-device, and including a route select code of a fixed length, inserted at a predetermined position of the data field, indicating a communication from a sub-device included in a device to any other device, a communication from a device to a sub-device included in any other device, or a communication from a device to any other device;
• and
• control means for detecting the route select code from the transmit signal received by said bus input means to detect on the basis of the detected route select code whether a communication carried out is a communication from a sub-device included in a device to any other device, a communication from a device to a sub-device included in any other device, or a communication from a device to any other device,
• said plurality of devices being connected to each other through said bi-directional bus.

A bi-directional bus system comprising a plurality of devices respectively including sub-devices adapted to execute the operation for a received control command, and a bi-directional bus, each of said plurality of devices comprising:

• transmit signal formation means for forming a transmit signal having a frame structure consisting of an address field for specifying addresses of devices between which communication is carried out, and a data field for specifying a control command for a device or a sub-device, and including a route select code of a fixed length, inserted at a predetermined position of the data field, indicating a communication from a sub-device included in a device to any other device, a communication from a device to a sub-device included in any other device, or a communication from a device to any other device, and indicating a source sub-device address, a destination sub-device address or a dummy code;
• bus output means for outputting the transmit signal formed by said transmit signal formation means to said bi-directional bus;
• bus input means adapted to receive the transmit signal through said bi-directional bus;
• and
• control means for detecting the route select code from the transmit signal received by said bus input means to detect on the basis of the detected route select code whether a communication carried out is a communication from a sub-device included in a device to any other device, a communication from a device to a sub-device included in any other device, or a communication from a device to any other device, and specifying a source sub-device, a destination sub-device, or a dummy code,
• said plurality of devices being connected to each other through said bi-directional bus.