JPH05191469A - Multi-medium communication mechanism - Google Patents

Abstract

PURPOSE:To perform the communication of the medium data among plural medium input/output devices of different medium standards in a local area network without using a host device. CONSTITUTION:A protocol converting circuit 3 converts the standard of the protocol of the medium data received by a host interface circuit 5 in a medium data transmission state. A network interface circuit 4 transmits a communication protocol to set up a session and processing the transmission data into a data frame to send it to a local area network. In a medium data reception state, the circuit 4 sets up a transmitter and a session and then sends the data frame to a medium identifying circuit 1. The circuit 1 identifies the medium standard and converts this standard into the medium data through a medium converting circuit 2 to send the data to the circuit 5. Then the communication protocol is sent to a medium input/output device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a media data communication mechanism for communicating media data between various media input / output devices and a local area network.

[0002]

2. Description of the Related Art A conventional media input / output device has a communication protocol and input / output data format dedicated to a media standard. For communication of media data between different media input / output devices, connect a general-purpose host device, identify the media standard of input / output data on the host device, and perform media conversion communication protocol conversion of input / output data by software. It is realized by means such as. Further, in the case of only data communication between media input / output devices of the same media standard, it is realized by laying a network for each media standard.

[0003]

Since all the processing relating to the conversion of the media standard between the conventional local area network and the media input / output device is performed by using the general-purpose host device, the load on the general-purpose host device is reduced. There is a drawback that it becomes very large and the processing speed becomes slow.
Further, in the case of a dedicated network between media input / output devices of the same media standard, there is a drawback that it is necessary to install a network for each media standard. An object of the present invention is to provide a multimedia communication mechanism capable of transmitting and receiving data of all media standards on a single local area network without using a general-purpose host device.

[0004]

In order to achieve the above object, a multimedia communication mechanism according to the present invention is connected to a single local area network and communicates media data between a plurality of media input / output devices having different media standards. In the network that performs the communication, a host interface circuit that exchanges protocol / data with a media input / output device, a media identification circuit that identifies the media standard of input / output data, and a media conversion that converts the media standard of input / output data Between a plurality of media input / output devices on a single local area network, including a circuit, a protocol conversion circuit for converting a communication protocol of a media standard, and a network interface circuit for exchanging protocols / data with a local area network. Data communication To be able to have configured.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a multimedia communication mechanism according to the present invention. When transmitting media data, the host interface circuit 5 receives a communication protocol and transmission data from the media input / output device based on the media standard. Then, the communication protocol is sent to the protocol conversion circuit 3. The protocol conversion circuit 3 converts the communication protocol into a network communication protocol and sends it to the network interface circuit 4. The network interface circuit 4 transmits the communication protocol of the network to the local area network and establishes a session with the destination. After the session is established, the network interface circuit 4 processes the transmission data received from the host interface circuit 5 into a network data frame and transmits it to the network.

In the case of receiving media data, the network interface circuit 4 receives the network communication protocol from the transmission source and establishes a session with the transmission source. After that, the data frame transmitted from the transmission source is received, and the reception data is sent to the media identification circuit 1. The media identification circuit 1 identifies the media standard of the received data and sends the received data to the media conversion circuit 2. The media conversion circuit 2 converts the received data into media data that conforms to the media standard of the connected media input / output device,
It is sent to the host interface circuit 5. The host interface circuit 5 sends the converted received data and the communication protocol received from the protocol conversion circuit 3 to the media input / output device.

[0007]

As described above, according to the present invention, by providing a circuit for performing communication protocol conversion and media data conversion between a plurality of media input / output devices having different media standards, it is possible to use a general-purpose host device. , It is possible to send and receive data of all media standards on a single local area network without being aware of the media standards of data sent and received on the local area network.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a multimedia communication mechanism according to the present invention.

[Explanation of Codes] 1 ... Host interface circuit 2 ... Media identification circuit 3 ... Media conversion circuit 4 ... Protocol conversion circuit 5 ... Network interface circuit

Claims (1)

[Claims] 1. A host that connects to a single local area network and exchanges protocol / data with a media input / output device in a network for communicating media data between a plurality of media input / output devices with different media standards. An interface circuit, a media identification circuit that identifies the media standard of input / output data, a media conversion circuit that converts the media standard of the input / output data, a protocol conversion circuit that converts the communication protocol of the media standard, and a local area network. A multimedia communication mechanism characterized by comprising a network interface circuit for exchanging protocols / data to and from, and enabling data communication between a plurality of media input / output devices on a single local area network.