Transmitting method, receiving method, and communication method for bi-directional bus system, and bi-directional bus system
First Claim
1. A transmitting method for a bi-directional bus system in which a plurality of devices respectively including sub-devices adapted to carry out 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,wherein 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, andwherein the transmit signal in which the route select code is inserted is transmitted through said bi-directional bus.
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Accused Products
Abstract
A communication system using a bi-directional bus, comprises a plurality of devices (e.g., TV Image Receiver, Video Tape Recorder, etc. ) respectively including sub-devices (e.g., Monitor Image Receiver, TV tuner, Video Deck, etc.) adapted for executing the operation for a received control command. Each device comprises a transmit signal formation unit 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 channel select code of a fixed length, inserted at a predetermined position of the data field, indicating communication from a sub-device included in a device to any other device, communication from a device to a sub-device included in any other device, or communication from a device to a device; and a bus output unit for outputting, to the bi-directional bus, the transmit signal formed by the transmit signal formation unit.
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Citations
14 Claims
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1. A transmitting method for a bi-directional bus system in which a plurality of devices respectively including sub-devices adapted to carry out 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, wherein 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, and wherein the transmit signal in which the route select code is inserted is transmitted through said bi-directional bus.
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3. 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. - View Dependent Claims (4)
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5. 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. - View Dependent Claims (6, 7, 8)
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9. 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:
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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. - View Dependent Claims (10)
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11. 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:
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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. - View Dependent Claims (12, 13)
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14. 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:
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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.
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Specification