Communication method and apparatus
First Claim
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1. A communication method for allowing communications among a plurality of devices linked to a predetermined network, comprising the steps of:
- providing one of said plurality of devices linked to said predetermined network with a plurality of boards where data are read out from when a predetermined command is transmitted from an other one of said plurality of devices linked to said predetermined network, wherein data of a predetermined type is stored in each of said plurality of boards;
providing one of said plurality of devices linked to said predetermined network with a writable storage region to/from which data is written/read out when said predetermined command is transmitted from said other one of said plurality of devices linked to said network;
setting said writable storage region by using one of said plurality of boards that are set within a predetermined sub-unit defined by an AV/C command set;
using said plurality of boards to allow data sharing by said plurality of devices linked to said predetermined network; and
using said writable storage region to allow data exchange throughout said predetermined network.
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Abstract
Communication method and apparatus for allowing restriction-free transmission of various kinds of information, such as control information, among devices constituting, for example, an IEEE 1394 network. At least one of the network-linked devices is provided with a storage region to/from which data can be written/read out by any other device on the network upon transmission of a predetermined command, so that data can be transmitted throughout the network by using the storage region.
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6 Claims
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1. A communication method for allowing communications among a plurality of devices linked to a predetermined network, comprising the steps of:
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providing one of said plurality of devices linked to said predetermined network with a plurality of boards where data are read out from when a predetermined command is transmitted from an other one of said plurality of devices linked to said predetermined network, wherein data of a predetermined type is stored in each of said plurality of boards;
providing one of said plurality of devices linked to said predetermined network with a writable storage region to/from which data is written/read out when said predetermined command is transmitted from said other one of said plurality of devices linked to said network;
setting said writable storage region by using one of said plurality of boards that are set within a predetermined sub-unit defined by an AV/C command set;
using said plurality of boards to allow data sharing by said plurality of devices linked to said predetermined network; and
using said writable storage region to allow data exchange throughout said predetermined network. - View Dependent Claims (2, 3)
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4. A communication device linked to a predetermined network formed of a plurality of devices, comprising:
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storage means for providing one of said plurality of devices linked to said predetermined network with a plurality of boards where data are read out from when a predetermined command is transmitted from an other one of said plurality of devices linked to said predetermined network, wherein data of a predetermined type is stored in each of said plurality of boards;
a writable storage region included in one of said plurality of devices to/from which data is written/read out when said predetermined command is transmitted from said other device linked to said predetermined network; and
control means for setting said writable storage region by using one of said plurality of boards that are set within a predetermined sub-unit defined by an AV/C command set, for using said plurality of boards to allow data sharing by said plurality of devices linked to said predetermined network, and for using said writable storage region to allow data exchange throughout said predetermined network. - View Dependent Claims (5, 6)
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Specification