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AssigneeCanon Kabushiki Kaisha
InventorsSHINICHI HATAE, TAKASHI KOBAYASHI, MITSUO NIIDA, SHINJI OHNISHI
Estimating the term…
Provided are a communication system and a communication protocol for logically connecting a source node and one or more destination nodes, and for controlling data communication between the individual nodes by employing a connection ID that is used to identity the logical connection relationship. Further, provided are a communication system and a communication protocol, whereby sequential transmission of data between a source node and one or more destination nodes can be satisfactorily halted through only simple processing, without complicated communication procedures being required.
A data communication system comprising:
A data communication method comprising the steps of:
A data communication system comprising:
A data communication method comprising the steps of:
A data communication apparatus comprising:
A data communication method comprising the steps of:
A data communication apparatus comprising:
A data communication method comprising the steps of:
A data communication apparatus comprising:
A data communication method comprising the steps of:
A digital interface comprising:
A digital interface comprising:
A digital interface comprising:
Dependencies are inferred from the claim text.
From the US filing history. Foreign family members aren’t listed.
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1. Field of the Invention
The present invention relates to a data communication system, a data communication method, a data communication apparatus, and a digital interface. In particular, the present invention pertains to a network for transmitting communication data (including image data) and command data together at a high speed, and a communication protocol that can be applied for the network.
2. Related Background Art
FIG. 1 is a diagram illustrating a conventional system;
FIG. 2 is a block diagram showing an example arrangement for a communication system according to a first embodiment of the present invention;
FIG. 3 is a conceptual diagram for explaining the basic structure of a communication protocol according to the first embodiment of the present invention;
The preferred embodiments of the present invention will hereinafter be described in detail while referring to the accompanying drawings.
FIG. 2 is a diagram illustrating an example arrangement of a data communication system according to a first embodiment of the present invention. As is shown in FIG. 2, the data communication system comprises a computer 10, a digital video recorder with built-in camera 28, and a printer 60.
The arrangement of the computer 10 will be described first. An MPU 12 controls the operation of the computer 10. A 1394 interface 14 includes a function that conforms to the IEEE 1394-1995 standards and a function that is associated with a communication protocol that is specified in this embodiment. An operating unit 16 includes a keyboard and a mouse. A decoder 18 decodes compressed and encoded digital data (moving image data, still image data, audio data, etc.). A display unit 20 includes a display device, such as a CRT display or a liquid crystal panel. A hard disk (HD) 22 is used to store various types of digital data (moving image data, still image data, audio data, graphics data, text data, program data, etc.), and an internal memory 24 is also provided as a storage medium. An internal bus 26 is, for example, a PCI bus that interconnects the individual sections of the computer 10.
Bus networks: high-speed IEEE 1394 serial bus
High-speed IEEE 1394 serial bus: interconnection of audio or video/imaging devices
High-speed IEEE 1394 serial bus: interconnection of computers and peripherals
Hybrid switching systems: hybrid transport
Term end not estimated
USPTO file history isn’t available for this patent, so only indexed dates are shown.