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Optical communication appts. and communication method

A technology of optical communication and two-way communication, which is applied in the direction of optics, light guide, optical fiber transmission, etc., and can solve problems such as inability to send data

Inactive Publication Date: 2002-12-04
SONY CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, there is a problem that each device cannot transmit data at the specified timing

Method used

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  • Optical communication appts. and communication method
  • Optical communication appts. and communication method
  • Optical communication appts. and communication method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0062] Figure 9 An example of a system configuration to which the present invention is applied is shown. exist Figure 9 In the shown structural example, the terminals 71 to 75 and various electronic devices in the room A and room B are connected to each other by the plastic optical fiber 76 .

[0063] At terminal 72, a B-ISDN communication line is connected; at terminal 73, a CATV communication line is connected. The terminal 74 is connected to a parabolic antenna 77 for receiving electromagnetic waves transmitted by broadcasting satellites or communication satellites, and the terminal 75 is connected to an antenna 78 for receiving electromagnetic waves for television broadcasting of ground waves.

[0064] In room A, a cable adapter 79 is provided and connected to the plastic optical fiber 76 . In this cable adapter 79, an IRD 80, a television receiver 81, a personal computer 82, and an image printer 83 are connected via a plastic optical fiber 76, and in addition, a loca...

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PUM

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Abstract

An optical communication apparatus in which bidirectional communication may be made over a sole optical fiber. A light emitting device (132) radiates light through an optical system (133) to an optical fiber (76). The light transmitted from the optical fiber (76) is received over optical system (133) by a light receiving device (136). In the optical system (133), such a relationship S - 2QN ≥ M > S / 2Q - N is set, where M is the light volume of the stray light emitted, Q is the value of a Q-value representing the communication quality as required, S is the light volume of a received signal from a communication partner and N is the sum total of the Gaussian noise. <IMAGE>

Description

technical field [0001] The present invention relates to an optical communication device and a communication method, in particular to an optical communication device and a communication method capable of two-way communication with one optical fiber. Background technique [0002] Has been using the IEEE1394 high-speed serial bus. By adopting the IEEE1394 high-speed serial bus (hereinafter simply referred to as the 1394 bus), the electronic devices in the home are connected to each other, so that various electronic devices can be networked. [0003] If a common electrical cable is used in such a 1394 bus, the attenuation is large, limiting the usable distance. In the technical specifications of electrical cables, 4.5 meters is specified as the longest transmission distance. So, for example, even with electrical cables connected along the wall at 5.4m 2 Installation of equipment on the opposite wall in the room is difficult. [0004] When transmitting and receiving data usin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/43G02B6/42H01L31/16H04B10/2507H04B10/2581H04B10/556
CPCG02B6/4214G02B6/4246H01L31/165H04B10/40H04B10/43
Inventor 筱邦宣久礼嘉伸堀江和由岛海洋一增田佳史名仓和人
Owner SONY CORP