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Public network interface device, communication system having the interface device, and driving method thereof

A technology of interface device and public network, applied in the direction of image communication, electrical components, etc., can solve the problems of high price, increased manufacturing cost, increased manufacturing cost of public network interface device and communication system, etc.

Inactive Publication Date: 2008-04-09
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

Since the components constituting the transformer circuits T1 and T2 are expensive, the manufacturing cost of the LIU increases, and this leads to an increase in the manufacturing cost of the common network interface device and the communication system having the LIU
[0021] In addition, the structure of the transformer circuits T1 and T2 requires space for installation, which is against miniaturization of the product

Method used

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  • Public network interface device, communication system having the interface device, and driving method thereof
  • Public network interface device, communication system having the interface device, and driving method thereof
  • Public network interface device, communication system having the interface device, and driving method thereof

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Embodiment Construction

[0060] Hereinafter, present embodiments of the present invention will be described in detail, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like parts throughout. The embodiments are described below in order to explain the present invention by referring to the figures.

[0061] image 3 It is a block diagram schematically showing the structure of the communication system 100 according to the embodiment of the present invention. refer to image 3 , the communication system 100 includes a control unit 110 , a storage unit 120 , an operation panel unit 130 , a scanning unit 140 , a printing unit 150 , a modem 160 , a line interface unit 170 and a sensor unit 180 . However, it should be understood that additional components may also be included and that some of these components, such as the display unit 132 and / or other scanning units 140 may be connected separately.

[0062] The control unit 110 controls the overall op...

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Abstract

A public network interface device includes a first switching unit operating in either an on-hook mode in which a first signal is applied or an off-hook mode in which a second signal is applied, and receiving the first signal and the second signal; a signal conversion unit converting the first signal and the second signal into a first detected signal and a second detected signal, respectively, if the first signal and the second signal are applied in the respective modes; and a second switching unit applying the first signal and the second signal to the signal conversion unit in accordance with the respective modes.

Description

technical field [0001] The present invention relates to an interface device, a communication system with the interface device and a driving method of the interface device. More specifically, the present invention relates to a public network interface device, a communication system having the interface device, and a driving method of the interface device. The invention also relates to miniaturization of the device and reduction of the manufacturing cost of the device by reducing the number of components. Background technique [0002] Generally, a facsimile communication system is a terminal for data communication such as voice, document, and image, and specifically, a facsimile communication system is an office automation device that transmits / receives data using a public network. Recently, with the development of digital technology, there has appeared a multifunction device, which is a multifunctional terminal that integrates various functions of office automation equipment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/00H04N1/32
CPCH04N1/327H04N1/32728H04N1/00
Inventor 李政伯南珍喜
Owner SAMSUNG ELECTRONICS CO LTD
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