KR20170077602A - A Controlling Board Having a Structure of Multi Interface - Google Patents

A Controlling Board Having a Structure of Multi Interface Download PDF

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Publication number
KR20170077602A
KR20170077602A KR1020150187649A KR20150187649A KR20170077602A KR 20170077602 A KR20170077602 A KR 20170077602A KR 1020150187649 A KR1020150187649 A KR 1020150187649A KR 20150187649 A KR20150187649 A KR 20150187649A KR 20170077602 A KR20170077602 A KR 20170077602A
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KR
South Korea
Prior art keywords
signal
interface
input signal
pin group
control module
Prior art date
Application number
KR1020150187649A
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Korean (ko)
Inventor
이대영
김주영
Original Assignee
주식회사 자연과사람
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Application filed by 주식회사 자연과사람 filed Critical 주식회사 자연과사람
Priority to KR1020150187649A priority Critical patent/KR20170077602A/en
Publication of KR20170077602A publication Critical patent/KR20170077602A/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
    • G06F13/4204—Bus transfer protocol, e.g. handshake; Synchronisation on a parallel bus
    • G06F13/4221—Bus transfer protocol, e.g. handshake; Synchronisation on a parallel bus being an input/output bus, e.g. ISA bus, EISA bus, PCI bus, SCSI bus
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/003—Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • G09G5/006—Details of the interface to the display terminal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
    • H03K19/0175—Coupling arrangements; Interface arrangements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
    • H03K19/0175—Coupling arrangements; Interface arrangements
    • H03K19/0185—Coupling arrangements; Interface arrangements using field effect transistors only
    • H03K19/018507—Interface arrangements

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  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computing Systems (AREA)
  • Mathematical Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control apparatus of a multi-interface structure, and more particularly to a control apparatus of a multi-interface structure having a structure operated by different interfaces. The control device of the multiple interface structure includes a control module (11) for operating an operation module (AP) arranged in an electronic device operated according to an input signal; A selection circuit (12) for determining a transmission path in accordance with an interface scheme of a signal input to the control module (11); And a transmission unit (13) for transmitting an externally input signal to the control module (11) via the selection circuit (12), wherein the transmission path is selected by a voltage difference.

Description

[0001] The present invention relates to a control apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control apparatus of a multi-interface structure, and more particularly to a control apparatus of a multi-interface structure having a structure operated by different interfaces.

Low-voltage differential signal (LVDS) and mobile industrial processor interface (MIP) systems are known as interfaces for processing data transmitted between different electronic devices or components. The LVDS interface for high-speed data processing is used for data transmission in flat panel displays, printers, digital copiers or cell phones. LVDS has the advantage of high data throughput and low EMI (Electric Magnetic Interference) emission characteristics, ensuring EMI compliance while meeting the data throughput demands required by a variety of applications. The MIPI was also created to define the interface between each component of the mobile device. MIPI combines the various functions and performance components of a mobile device with fast performance. Mobile devices such as smart phones are integrated with communication functions and portable computer functions, and MIPI has an advantage in that it is compatible with various peripheral devices connected to a smart phone. Various techniques related to LVDS interfaces or MIPI are known in the art.

Patent Registration No. 10-0618266 discloses a method of receiving a voltage through a USB data cable connected to an external LVDD data transmitting and receiving device and receiving data through a USB device connected to the USB data cable and the data transmitting and receiving device A USB transceiver for transmitting and receiving; And recognizing a connection of the USB transceiver and the USB data cable connected to the USB transceiver according to a voltage received through the USB data cable and the USB transceiver, recognizing a data transmission speed of the USB data cable, And a control means for controlling the data transmission and reception apparatus.

Japanese Patent Application Laid-Open No. 10-2014-0067342 discloses a display module connection interface device for inputting a signal input from an AV board to a display module in an LVDS system. In accordance with a module type signal indicating the type of the display module, A signal format conversion unit for converting a signal output from the signal processing unit into a signal format corresponding to the display module and inputting the signal format to the display module; And an LVDS connector for transmitting a signal input from the signal format conversion unit to the display module.

Patent Publication No. 10-2015-0062030 discloses a low power transmitter for adjusting the rate of change of the full swing output voltage in the maximum current amount range; And a low power receiver receiving the full swing output voltage and generating a full swing logic output based on a first reference voltage and a second reference voltage, the low power transmitter comprising a first PMOS transistor and a first NMOS transistor A first inverter including a first NMOS transistor connected in series with a drain of the first NMOS transistor; A first inverter including a second PMOS transistor and a first NMOS transistor serially connected to a drain of the second NMOS transistor; A second inverter including a second PMOS transistor and a second NMOS transistor serially connected to a drain of the second NMOS transistor; A third inverter including a third PMOS transistor and a third NMOS transistor serially connected to a drain of the third NMOS transistor; A fourth PMOS transistor having a drain connected to a gate of the first PMOS transistor; A fifth PMOS transistor having a drain connected to a gate of the second PMOS transistor; A first inverter accelerator coupled to the drain of the sixth PMOS transistor and having an input voltage connected to the gate; And a second interverter accelerator connected to a drain of the sixth NMOS transistor and having the input voltage connected to a gate thereof. The capacity of the load capacitor connected to the D-PHY circuit for MIPI operating in the low power mode The rise time to reach the maximum output and the fall time to return to the minimum output are increased as compared with the case where the capacity of the load capacitor is large, the D-PHY circuit for MIPI will be described.

The LVDS interface or MIPI disclosed in the prior art discloses a method of processing a corresponding signal according to each interface structure while operating on one interface structure. Therefore, one interface structure processes signals according to either the LVDS interface or the MIPI scheme. Therefore, if the input signal format is changed, the interface must be changed, for example, the printed circuit board itself must be changed. However, a control device which can be operated both as an LVDS interface and a MIPI as required is required, but the prior art does not disclose such a multi-interface structure.

The present invention has been made to solve the problems of the prior art and has the following purpose.

Prior Art 1: Patent Registration No. 10-0618266 (Pantech Co., Ltd., September 01, 2006) Data transceiver using LVDS, portable terminal using the same and method thereof Prior Art 2: Patent Publication No. 10-2014-0067342 (published by Orion, June 05, 2014) LVDS interface device for connecting a display module Prior Art 3: Patent Docket No. 10-2015-0062030 (published by Silicon Hands, Inc. on Jun. 05, 2015) D-PHY circuit for MIPI operating in LP (low-power) mode

It is an object of the present invention to provide a control apparatus of a multi-interface structure in which different types of input signals can be processed in one substrate.

According to a preferred embodiment of the present invention, a control apparatus of a multiple interface structure includes a control module for operating an operation module disposed in an electronic apparatus operated according to an input signal; A selection circuit for determining a transmission path according to an interface scheme; And a transmission unit for transmitting an externally input signal to the control module via a selection circuit, wherein the transmission path is selected by a voltage difference.

According to another preferred embodiment of the present invention, the control module has one signal pin group and two signal pin groups for reception of an input signal according to one interface and two interfaces, It has a different resistance.

According to another preferred embodiment of the present invention, the interface scheme is Low Voltage Differential Signaling (LVDS) and Mobile Industrial Processor Interface (MIPI).

The control device according to the present invention enables an input signal to be processed in an LVDS interface or MIPI scheme on one printed circuit board or one flexible circuit board. For example, a WXGA display can be operated on a signal input through an LVDS interface or a MIPI scheme. Accordingly, the control device according to the present invention allows the operation of the LVDS interface and the MIPI method to be tested by one control device. Further, the control device according to the present invention can be structurally simple and prevents operation errors by selecting different interface schemes according to a change in operation voltage. This allows one printed circuit board or a flexible circuit board to operate in the LVDS interface manner or the MIPI manner, without the need for a printed circuit board or a flexible circuit board to be made independently. Also, during SET development of electronic equipment, depending on the type of main board, it can be operated by WXGA LCD, LVDS interface or MIPI, and in such a case, the LCD is operated regardless of the interface type.

1 is a block diagram showing an embodiment of a control apparatus according to the present invention.
2 shows an embodiment in which the control device according to the present invention is applied.
Fig. 3 shows an embodiment of the operating structure of the control device according to the present invention.
4A and 4B show an embodiment of an interface control method according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto. In the following description, components having the same reference numerals in different drawings have similar functions, so that they will not be described repeatedly unless necessary for an understanding of the invention, and the known components will be briefly described or omitted. However, It should not be understood as being excluded from the embodiment of Fig.

1 is a block diagram showing an embodiment of a control apparatus according to the present invention.

Referring to FIG. 1, a control device according to the present invention includes a control module 11 for operating an operation module (AP) disposed in an electronic device operated according to an input signal; A selection circuit (12) for determining a transmission path in accordance with an interface scheme of a signal input to the control module (11); And a transmission unit (13) for transmitting an externally input signal to the control module (11) via the selection circuit (12), wherein the transmission path is selected by a voltage difference.

The control device according to the present invention may include a printed circuit board or a flexible circuit board (FPCB) disposed in a smart phone or a tablet computer and a portable electronic device. The control device may include, but is not limited to, hardware or software that drives a graphics unit or display unit that drives a wide extended graphics array (WXGA) so that the input signal is displayed as an image. A control device according to the present invention can be arranged or connected to an electronic device or a computer to operate an electronic operation module (AP) installed in a computer or an electronic device such as, for example, a graphic card, a camera or a speaker in accordance with an input signal IS have.

The input signal IS becomes a communication signal for controlling the operation of the electronic device, and can be input from the outside to the electronic device via wireless communication or wire communication, or transmitted to the transmission unit 13 via the input means of the electronic device. The transmission unit 13 may be a part of the signal processing unit and may have a specification according to the type of the input signal IS. For example, the signal transmission unit 13 may include any hardware or software known in the art that allows a connector or input signal to be coupled to a pin of a printed circuit board or a flexible circuit board to be transmitted to a signal transmission pin. The input signal IS can be transmitted to the control module 11 via the transmission unit 13 and the transmission path can be determined by the selection circuit 12. [ The selection circuit 12 selects a plurality of signal pins arranged in the control module 11 such as a printed circuit board or a flexible circuit board so that the input signal IS is supplied to a predetermined element or device of the control module 11. [ So that it can be transmitted and operated. For example, the input signal IS may be a signal according to Low Voltage Differential Signaling (LVDS) or Mobile Industrial Processor Interface (MIPI). The selection circuit 12 can control the input signal IS to be transmitted to the control module 11 through different signal pins according to the interface scheme of each signal. The selection circuit 12 may comprise a voltage application circuit for regulating the voltage applied to the signal pins disposed in the control module 11 or a switch circuit for determining the propagation path of the signal. The signal pins arranged in the control module 11 can be divided into one signal pin group and two signal pin groups, one signal pin group is transmitted with the signal of the LVDS interface method, and the two signal pin group is transmitted with the signal of the MIPI method To be transmitted. The selection circuit 12 may adjust the voltage applied to the 1-signal pin group and the 2-signal pin group or apply the voltage in advance according to the type of the input signal IS. For example, one signal pin group can have a voltage of 1.8 V, and the two signal pin group can have a ground voltage of 0 V. If the input signal IS is input to the control module 11 in the transmission unit 13, a voltage of 1.8 V can be applied to the input signal IS by the selection circuit 12 if the MIPI scheme is used . On the other hand, if the LVDS interface scheme is used, the selection circuit 12 can apply a 0V voltage to the input signal IS. According to the interface scheme, the input signal IS is transmitted to the control module 11 through one signal pin group or two signal pin groups, respectively, and operates the operation module AP according to each interface method. Therefore, the control module 11, which is a single printed circuit board or a flexible circuit board, operates in the LVDS interface mode or the MIPI mode, and the printed circuit board or the flexible circuit board need not be independently manufactured. Also, during SET development of electronic devices, it can be operated by WXGA LCD, LVDS interface or MIPI depending on the type of main board. In this case, the control device according to the present invention allows the LCD to be operated regardless of the interface method.

An embodiment in which the control device according to the present invention which operates in this way is applied will be described below.

2 shows an embodiment in which the control device according to the present invention is applied.

2, the control module 11 may be, for example, a flexible circuit board, and a communication signal may be input to the control module 11 through a plurality of signal pins 111 and 112. The plurality of signal pins 111 and 112 may be composed of one signal pin group 111 operated in the LVDS interface and a two signal pin group 112 operated in the MIPI and may be connected to the signal input through the transmission unit 13 Accordingly, communication signals of different interfaces can be transmitted to the control module 11. 1 signal pin group 111 and 2 signal pin group 112 may have different applied voltages or operating voltages and may have an operating voltage of 1.8 V and an operating voltage of 0 V, respectively, as described above. In order to apply the operating voltage, the plurality of signal pins 111 and 112 may have different resistances. For example, a resistance of 80 to 120 [Omega] is connected to five signal pins to which a communication signal is transmitted in the LVDS interface in one signal pin group 111, and a two signal pin group 112 used in MIPI communication is connected to a resistance element May not be connected. Thus, the 1-signal pin group 111 and the 2-signal pin group 112 can have different resistances and thereby have different operating voltages.

When the input signal IS corresponding to the activation signal is transmitted to the transmission unit 13, the transmission unit 13 transmits the interface manner in which the input signal IS is activated to the selection circuit 12. The selection circuit 12 sets the operating voltage of the input signal IS through the operation control unit 21 according to the detected or preset interface method. The input signal IS may be transmitted through the signal pin group 111 or the signal pin group 112 according to the corresponding interface scheme. The LCD unit can be operated according to a signal transmitted to the control module 11 through the 1-signal pin group 111 or the 2-signal pin group 112, for example. Thus, the selection circuit 12 sets the operating voltage of the one signal pin group 111 and the two signal pin group 112 in advance, and adjusts the operating voltage of the input signal IS by the operation control unit 21 So that signals of different interfaces are transmitted to the control module 11.

The selection circuit 12 can set operating conditions of the one signal pin group 111 and the two signal pin group 112 in various manners, and the present invention is not limited to the embodiments shown.

Fig. 3 shows an embodiment of the operating structure of the control device according to the present invention.

3, a signal input from the transmission unit 13 can be transmitted to the control element 31, and the control element 31 is connected to an operation module (AP) Of the interface. The control element 31 may be, for example, a central processing unit disposed in the control module 11 or hardware or software independently arranged to determine the interface manner. For example, an operating module (AP) may be a WXGA graphics unit that drives an LCD module operating on an LVDS interface. The detection of the interface mode of the operating module AP by the detection unit 33 can be detected and transmitted to the control element 31. [ The transmission unit 13 can also transmit the manner of the incoming communication signal to the control element 31. [ The control element 31 can transmit the interface of the input signal to the operating interface of the operating module (AP) detected by the selection circuit 12. [ If the operation module (AP) is operated in both the LVDS interface and the MIPI, the control module 11 can set the operation interface of the operation module (AP) according to the interface method of the input signal. The input signal input through the transmission unit 13 can be transferred to the signal pin group 32 and as described above the signal pin group 32 is divided into one signal pin group for transmission of the LVDS interface communication signal and one signal pin group for transmission of the LVDS interface communication signal, And two signal pin groups for transmission of communication signals. The transmission unit 13 is connected to enable signal transmission to any pin of the signal pin group 32. The selection circuit 12 can set the operating voltage of the input signal IS to be transmitted to the transmission unit 13 by operating the operation control unit 21 according to the interface information transmitted from the control element. The input signal IS can then be transmitted to the pin group 32 by the operating voltage set by the operation control unit 21. [ The pin group 32 can transmit the input signal IS to the control module 11 in one signal pin group or two signal pin groups according to the operating voltage of the input signal IS. Thereafter, the control module 11 operates the operation module AP according to the interface method of the input signal IS, and the operation state of the operation module AP is detected by the detection unit 33 and sent to the control element 31 Lt; / RTI >

The control device according to the present invention can be operated according to various operating structures, and the present invention is not limited to the embodiments shown.

4A and 4B show an embodiment of an interface control method according to the present invention.

4A and 4B, an interface control method according to the present invention determines a signal pin group of an LVDS interface type and a two-signal pin group of an MIPI scheme in a flexible circuit board having a plurality of signal pins, Setting the group and the second signal pin group to have different resistance values (P41); A step (P42) of inputting an input signal to a device connected to the flexible circuit board; A step (P43) of judging an interface mode of the input signal; If the interface type of the input signal is an LDVS interface signal (YES), the ground voltage (0 V) is applied to the input signal. Otherwise, if it is a MIPI signal (NO), the input signal is connected to 1 signal pin group or 2 signal pin group A step (P45) in which an operating voltage is applied according to a resistance; A step (P46) of outputting an input signal through one signal pin group or two signal pin groups according to an interface method of an input signal; And a step (P47) in which an operation module such as an LCD module is operated in accordance with an output signal.

A plurality of signal pins may be disposed on the flexible circuit board, and one signal pin group (LD) and one MIPI signal for transmission of the LVDS interface signal to one flexible circuit board, as shown in FIG. 4B, The signal pin group MP can be arranged at the same time. A resistor (R) of 80 to 120 [Omega] can be connected to each signal pin of one signal pin group (LP). 1 signal pin group LD can be grounded and an operating voltage of, for example, 1.8 V can be applied to the two signal pin group MP. When the pin operating condition of the flexible circuit board is set in this manner (P41), the LVDS interface or MIPI signal may be input to an electronic device such as a smartphone or a tablet computer (P42). The operating interface of the input signal is determined (P43), and the operating voltage may be applied to the input signal according to the interface structure of the input signal (P44, P45). Then, the input signal is outputted through one signal pin group or two signal pin groups (P46), and a graphic device such as WXGA can be operated according to an arbitrary interface method (P47).

In the illustrated embodiment, the operating conditions of the signal pin are voltage, but not limited thereto, and the operating conditions of the one signal pin group or the two signal pin group can be variously set.

The control device according to the present invention enables an input signal to be processed in an LVDS interface or MIPI scheme on one printed circuit board or one flexible circuit board. For example, a WXGA display can be operated on a signal input through an LVDS interface or a MIPI scheme. Accordingly, the control device according to the present invention allows the operation of the LVDS interface and the MIPI method to be tested by one control device. Further, the control device according to the present invention can be structurally simple and prevents operation errors by selecting different interface schemes according to a change in operation voltage. This allows one printed circuit board or a flexible circuit board to operate in the LVDS interface manner or the MIPI manner, without the need for a printed circuit board or a flexible circuit board to be made independently. Also, during SET development of electronic equipment, depending on the type of main board, it can be operated by either WXGA LCD, LVDS interface or MIPI. In this case, LCD is operated irrespective of interface type.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention . The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

11: control module 12: selection circuit
13: Transmission unit 21: Operation control unit
31: control element 32: signal pin group
33: Detection unit 111: 1 signal pin group
112: 2 signal pin group AP: operation module
IS: Input signal LD: 1 signal Pin group
MP: 2 signal pin group R: Resistor

Claims (3)

A control module (11) for operating an operation module (AP) arranged in an electronic device operated according to an input signal;
A selection circuit (12) for determining a transmission path in accordance with an interface scheme of a signal input to the control module (11); And
And a transmission unit (13) for transmitting an externally input signal to the control module (11) via the selection circuit (12)
Wherein the transmission path is selected by a voltage difference. [Claim 2] The method of claim 1, wherein the control module (11) has one signal pin group and two signal pin groups for reception of an input signal according to one interface and two interfaces, And a controller for controlling the multi-interface structure. The controller of claim 1, wherein the interface scheme is Low Voltage Differential Signaling (LVDS) and Mobile Industrial Processor Interface (MIPI).
KR1020150187649A 2015-12-28 2015-12-28 A Controlling Board Having a Structure of Multi Interface KR20170077602A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150187649A KR20170077602A (en) 2015-12-28 2015-12-28 A Controlling Board Having a Structure of Multi Interface

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150187649A KR20170077602A (en) 2015-12-28 2015-12-28 A Controlling Board Having a Structure of Multi Interface

Related Child Applications (1)

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KR1020180010652A Division KR20180014143A (en) 2018-01-29 2018-01-29 A Controlling Board Having a Structure of Multi Interface

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KR20170077602A true KR20170077602A (en) 2017-07-06

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