Electrical computers and digital data processing systems: input/ – Intrasystem connection – Protocol
Reexamination Certificate
1998-10-19
2001-08-28
Dharia, Rupal D. (Department: 2181)
Electrical computers and digital data processing systems: input/
Intrasystem connection
Protocol
C710S058000, C710S106000, C710S008000, C710S009000, C710S010000, C709S241000
Reexamination Certificate
active
06282597
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an information processing apparatus, a control method, and a transmission medium. More particularly, the present invention relates to an information processing apparatus in which a plug for a Thin protocol is provided to make a Thin protocol used in the exchange of data performed on an IEEE1394 serial bus protocol which responds to an AV/C (Audio Visual/Control) command, a control method, and a transmission medium.
2. Description of the Related Art
Recently, a system has been proposed in which electronic apparatuses, such as AV apparatuses or personal computers, are connected to each other, for example, through an IEEE1394 serial bus so that data can be exchanged among them.
For example, in a disk camera and a printer which are connected to each other through an IEEE1394 serial bus, when an image photographed by a disk camera is desired to be printed by a printer, an FCP (Function Control Protocol) and an IEC61883 protocol which responds to an AV/C command are available. Also, at present, a Thin protocol has been proposed.
However, the above-mentioned Thin protocol does not respond to the AV/C command. Therefore, it cannot be used for apparatuses which respond only to an AV/C command.
SUMMARY OF THE INVENTION
An object of the present invention, which has been achieved in view of such circumstances, is to make a Thin protocol respond to an AV/C command by forming a plug for use with the Thin protocol in an information processing apparatus.
According to a first aspect of the present invention, there is provided an information processing apparatus such that the protocol is a protocol such that a plurality of connections can be formed in accordance with a request from an application layer among apparatuses which perform communications and a plurality of channels can be formed in each connection, and that descriptors of an input plug and an output plug of the protocol are provided.
According to a second aspect of the present invention, there is provided a control method such that the protocol is a protocol such that a plurality of connections can be formed in accordance with a request from an application layer among apparatuses which perform communications and a plurality of channels can be formed in each connection, and that an input plug and an output plug of the protocol are formed in the descriptors of the information processing apparatus and the printer, and predetermined data is written into the input plug and the output plug, so that the operation of the information processing apparatus and the printer is controlled.
According to a third aspect of the present invention, there is provided a transmission medium such that the protocol is a protocol such that a plurality of connections can be formed in accordance with a request from an application layer among apparatuses which perform communications and a plurality of channels can be formed in each connection, and that an input plug and an output plug of the protocol are formed in the descriptors of the information processing apparatus and the printer, and predetermined data is written into the input plug, and the output plug, so that the operation of the information processing apparatus and the printer is controlled.
In the information processing apparatus in accordance with the first aspect of the present invention, the control method in accordance with the second aspect of the present invention, and the transmission medium in accordance with the third aspect of the present invention, the protocol is a protocol such that a plurality of connections can be formed in accordance with a request from an application layer among apparatuses which perform communications and a plurality of channels can be formed in each connection, and that an input plug and an output plug of the protocol are formed in the descriptors of the information processing apparatus and the printer, and predetermined data is written into the input plug and the output plug, so that the operation of the information processing apparatus and the printer is controlled.
The above and further objects, aspects and novel features of the invention will become more apparent from the following detailed description when read in connection with the accompanying drawings.
REFERENCES:
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patent: 5828656 (1998-10-01), Sato et al.
patent: 5915127 (1999-06-01), Ogawa et al.
patent: 5940600 (1999-08-01), Staats et al.
patent: 5987126 (1999-11-01), Okuyama et al..
patent: 6018816 (2000-01-01), Tateyama
Dharia Rupal D.
Maioli Jay H.
Sony Corporation
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