KR20030045981A - Extended Serial Peripheral Interface - Google Patents

Extended Serial Peripheral Interface Download PDF

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Publication number
KR20030045981A
KR20030045981A KR1020010075923A KR20010075923A KR20030045981A KR 20030045981 A KR20030045981 A KR 20030045981A KR 1020010075923 A KR1020010075923 A KR 1020010075923A KR 20010075923 A KR20010075923 A KR 20010075923A KR 20030045981 A KR20030045981 A KR 20030045981A
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South Korea
Prior art keywords
terminal
interface
espi
serial peripheral
peripheral interface
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KR1020010075923A
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Korean (ko)
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KR100442416B1 (en
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김용철
신현규
한성욱
이진희
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주식회사 이트로닉스
삼은전자 주식회사
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Priority to KR10-2001-0075923A priority Critical patent/KR100442416B1/en
Publication of KR20030045981A publication Critical patent/KR20030045981A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R27/00—Coupling parts adapted for co-operation with two or more dissimilar counterparts
    • H01R27/02—Coupling parts adapted for co-operation with two or more dissimilar counterparts for simultaneous co-operation with two or more dissimilar counterparts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/58—Contacts spaced along longitudinal axis of engagement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/60—Contacts spaced along planar side wall transverse to longitudinal axis of engagement
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2107/00—Four or more poles

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

PURPOSE: An ESPI jack is provided to reduce the number of component parts and the space occupied by a product and decrease the volume of the product. CONSTITUTION: An extended serial peripheral interface jack includes a power interface(20), a battery terminal(21), a power terminal(22) and a serial interface(30). The power interface is composed of an audio interface(10) having a ground terminal(13) for controlling potential, a left terminal(12) for transmitting an audio signal to a left speaker of an earphone and a right terminal(11) for delivering the audio signal to a right speaker of the earphone, and a three-terminal pin inserted into ESPI(Extended Serial Peripheral Interface) socket(200). The battery terminal is used for charging a battery, and the power terminal outputs power. The serial interface is composed of a chip select terminal through which a control signal is transferred, a clock terminal for controlling timing, a data input/output terminal, and a read/write terminal.

Description

이에스피아이 잭{Extended Serial Peripheral Interface}Espia Jack {Extended Serial Peripheral Interface}

본 발명은 인터페이스에 관한 것으로, 더욱 상세하게는 한 개의 인터페이스로 다기능 역할을 하기 위한 ESPI(Extended Serial Peripheral Interface)에 관한 것이다.The present invention relates to an interface, and more particularly, to an Extended Serial Peripheral Interface (ESPI) for performing a multifunction role with one interface.

일반적으로 사용되는 이어폰 인터페이스는 mp3나 소형카세트등에 연결되어 음악을 청취하기 위한 오디오적인 기능만으로 사용되었다.Commonly used earphone interface is connected to mp3 or compact cassette and used only for audio function to listen to music.

그리고, mp3나 소형카세트등의 충전 시 사용되는 충전기 인터페이스 또한 충전용 외의 기능으로는 사용되지 않으며, USB(Universal Serial Bus) 다운로더에서 mp3로 음악데이타를 다운로드 시 사용되는 다운로드용 인터페이스 또한 USB(Universal Serial Bus) 다운로더용 인터페이스 기능 외에는 사용되지 않는다.In addition, the charger interface used for charging mp3 or compact cassette is not used as a function other than charging, and the download interface used for downloading music data to mp3 from a USB (Universal Serial Bus) downloader is also used as a USB (Universal Serial). Bus) It is not used except for interface function for downloader.

그러므로, 상기와 같은 인터페이스들은 각각 한가지 역할만을 수행하므로 필요시에는 각각의 인터페이스가 모두 필요하고, 또한 각각의 인터페이스들이 제품상에 연결되기 위해 차지하는 공간이 커지며, 제품설계 시 책정되는 비용에서도 큰 비중을 차지하게 된다.Therefore, each of the above interfaces plays one role only, so each interface is needed if necessary, and the space occupied by each interface to be connected to the product becomes large, and a great weight is also given to the cost of the product design. To occupy.

따라서, 본 발명의 목적은 종래의 문제점을 해결하기 위한 것으로, 제품이 차지하는 공간 및 부품 수를 줄이고 제품을 소형화하여 단가를 낮추는데 그 목적이 있다.Accordingly, an object of the present invention is to solve the conventional problems, and the purpose is to reduce the space occupied by the product and the number of parts, and to reduce the cost by miniaturizing the product.

도 1a는 본 발명에 따른 ESPI(Extended Serial Peripheral Interface)의 평면도.1A is a plan view of an Extended Serial Peripheral Interface (ESPI) in accordance with the present invention.

도 1b는 본 발명에 따른 ESPI(Extended Serial Peripheral Interface)와 ESPI(Extended Serial Peripheral Interface)인터페이스 소켓의 평면결합도.1B is a planar coupling diagram of an Extended Serial Peripheral Interface (ESPI) and an Extended Serial Peripheral Interface (ESPI) interface socket according to the present invention.

도 2a는 본 발명에 따른 ESPI(Extended Serial Peripheral Interface)의 배면도.Figure 2a is a rear view of the Extended Serial Peripheral Interface (ESPI) in accordance with the present invention.

도 2b는 본 발명에 따른 ESPI(Extended Serial Peripheral Interface)와 ESPI(Extended Serial Peripheral Interface) 소켓의 배면결합도.Figure 2b is a rear coupling of the Extended Serial Peripheral Interface (ESPI) and Extended Serial Peripheral Interface (ESPI) socket according to the present invention.

도 3은 ESPI(Extended Serial Peripheral Interface)가 이어폰 인터페이스로 사용되는 실시 예.3 is an embodiment in which Extended Serial Peripheral Interface (ESPI) is used as an earphone interface.

도 4는 ESPI(Extended Serial Peripheral Interface)가 충전기용 인터페이스로 사용되는 실시 예.4 is an embodiment in which an Extended Serial Peripheral Interface (ESPI) is used as an interface for a charger.

도 5는 ESPI(Extended Serial Peripheral Interface)가 USB(Universal Serial Bus) 다운로더를 통한 다운로드용 인터페이스로 사용되는 실시 예.5 is an embodiment in which an Extended Serial Peripheral Interface (ESPI) is used as an interface for download through a Universal Serial Bus (USB) downloader.

* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

10:오디오인터페이스 20:파워인터페이스10: Audio interface 20: Power interface

30:씨리얼인터페이스30: Cereal interface

100:ESPI(Extended Serial Peripheral Interface)100: Extended Serial Peripheral Interface (ESPI)

200:ESPI(Extended Serial Peripheral Interface) 소켓200: Extended Serial Peripheral Interface (ESPI) Socket

상기한 바와 같은 목적을 달성하기 위한 본 발명은, 전위를 조절하는 그라운드(Ground)단자와 이어폰의 좌측스피커로 음성신호를 전달하는 래프트(Left)단자와 이어폰의 우측스피커로 음성신호를 전달하는 라이트(Right)단자등의 3단자로 구성된 ESPI(Extended Serial Peripheral Interface) 소켓에 삽입되는 두단자 핀으로 구성된 오디오인터페이스; 배터리를 충전시키는 배터리단자와 전원을 출력하는 파워단자로 구성; 및 전자신호를 컨트롤하는 컨트롤신호가 지나가는 통로인 CS(Chip Select)단자와 타이밍을 조절하는 클럭단자와 Data I/O(In/Out)단자와 USB(Universal Serial Bus) 다운로더에서 데이터를 읽고 쓰기 기능을 하는 R/W(Read/Write)단자로 구성된 씨리얼인터페이스; 을 포함하는 것을 특징으로 한다.The present invention for achieving the object as described above, the ground (Ground) terminal for adjusting the potential and the left (Lft) terminal for transmitting the voice signal to the left speaker of the earphone and the right to transmit the voice signal to the right speaker of the earphone An audio interface consisting of two terminal pins inserted into an Extended Serial Peripheral Interface (ESPI) socket consisting of three terminals such as a (Right) terminal; A battery terminal for charging the battery and a power terminal for outputting power; Read and write data from the CS (Chip Select) terminal, the control channel for controlling electronic signals, the clock terminal for adjusting timing, the Data I / O (In / Out) terminal, and the USB (Universal Serial Bus) downloader. A serial interface composed of R / W (Read / Write) terminals; Characterized in that it comprises a.

이하에서는 상기의 목적을 달성하는 본 발명을 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings, the present invention to achieve the above object will be described in detail.

도 1a는 본 발명에 따른 ESPI(Extended Serial Peripheral Interface)의 평면도이고, 도 1b는 본 발명에 따른 ESPI(Extended Serial Peripheral Interface)와 ESPI(Extended Serial Peripheral Interface) 소켓의 평면결합도이다.FIG. 1A is a plan view of an extended serial peripheral interface (ESPI) according to the present invention, and FIG. 1B is a plan view of an extended serial peripheral interface (ESPI) and extended serial peripheral interface (ESPI) socket according to the present invention.

본 발명인 ESPI(Extended Serial Peripheral Interface)는 청취기능을 위한 오디오인터페이스(10)와 충전기능을 위한 파워인터페이트(20)와 USB(Universal Serial Bus)다운로더를 통해 음악을 다운로드받기 위한 씨리얼인터페이스(30)로 구성된다.ESPI (Extended Serial Peripheral Interface) is a serial interface 30 for downloading music through an audio interface 10 for listening function, a power interface 20 for charging function and a USB (Universal Serial Bus) downloader. It consists of.

상기 오디오인터페이스(10)는 도 1a와 같이, 좌측 이어폰 스피커에 음성신호를 전달하기 위한 래프트(Left) 단자(12)와 우측 이어폰 스피커에 음성신호를 전달하기 위한 라이트(Right) 단자(11)와 전위를 조절하기 위한 그라운드(Ground) 단자(13)와 ESPI(Extended Serial Peripheral Interface) 소켓(200)의 삽입부(14')에 삽입되는 삼단자 핀(14)으로 구성된다.The audio interface 10 includes a left terminal 12 for transmitting a voice signal to the left earphone speaker and a right terminal 11 for transmitting a voice signal to the right earphone speaker as shown in FIG. 1A. It consists of a ground terminal 13 for adjusting the potential and a three-terminal pin 14 inserted into the insertion portion 14 'of the Extended Serial Peripheral Interface (ESPI) socket 200.

상기 삼단자 핀(14)의 지름은 1.5π ~ 2π이며, 지름이 2π일때가 가장 바람직하다.The diameter of the three-terminal pin 14 is 1.5π ~ 2π, most preferably when the diameter is 2π.

도 3은 상기 ESPI(Extended Serial Peripheral Interface)가 이어폰 인터페이스로 mp3의 음악을 듣고자 할때 연결되어 사용되는 실시 예를 보이고 있다.3 illustrates an embodiment in which the Extended Serial Peripheral Interface (ESPI) is connected to and used when listening to music of mp3 through an earphone interface.

도 3의 실시 예 에서와 같이, 상기 ESPI(Extended Serial Peripheral Interface)(100)가 이어폰 인터페이스로 사용되어 mp3(400)에 연결될 때, 상기 ESPI(Extended Serial Peripheral Interface)(100)는 mp3(400)내부에 설치된ESPI(Extended Serial Peripheral Interface) 소켓(200)에 삽입된다.As in the embodiment of Figure 3, when the Extended Serial Peripheral Interface (ESPI) 100 is used as an earphone interface and connected to the mp3 (400), the Extended Serial Peripheral Interface (ESPI) 100 is mp3 (400) It is inserted into an Extended Serial Peripheral Interface (ESPI) socket 200 installed therein.

상기 mp3(400)에서 보내는 오디오신호는 mp3내부에 설치된 ESPI(Extended Serial Peripheral Interface) 소켓(200)의 제1그라운드 단자(13')와 제1래프트(Left) 단자(12')와 제1라이트(Right) 단자(11')로 전달되고, 상기 전달된 오디오 신호는 ESPI(Extended Serial Peripheral Interface) 소켓(200)의 삽입부(14')에 삽입된 ESPI(Extended Serial Peripheral Interface)(100)의 삼단자 핀(14)으로 전달된다.The audio signal from the mp3 400 is transmitted to the first ground terminal 13 ′, the first left terminal 12 ′, and the first light of an ESPI (Extended Serial Peripheral Interface) socket 200 installed in the mp3. (Right) terminal 11 ', and the transmitted audio signal of the Extended Serial Peripheral Interface (ESPI) 100 is inserted into the insertion portion 14' of the Extended Serial Peripheral Interface (ESPI) socket 200 It is delivered to the three-terminal pin 14.

상기 삼단자 핀(14)으로 전달된 오디오 신호는 ESPI(Extended Serial Peripheral Interface)(100)의 그라운드(Ground) 단자(13)와 래프트(Left) 단자(12)와 라이트(Right) 단자(13)로 전달되고, 상기 래프트(Left) 단자(12)와 라이트(Right) 단자(13)를 통해 이어폰(300)의 좌측 및 우측 스피커로 오디오신호를 전달하여 음악을 청취한다.The audio signal transmitted to the three-terminal pin 14 is a ground terminal 13, a left terminal 12, and a right terminal 13 of an extended serial peripheral interface (ESPI) 100. The audio signal is transmitted to the left and right speakers of the earphone 300 through the left terminal 12 and the right terminal 13 to listen to music.

상기 충전기능을 위한 파워인터페이스(20)는 도 1a에 도시된 바와 같이, 전원을 충전시키는 배터리단자(21)와 전원을 출력하는 파워단자(22)로 구성된다.As shown in FIG. 1A, the power interface 20 for the charging function includes a battery terminal 21 for charging power and a power terminal 22 for outputting power.

도 4는 상기 ESPI(Extended Serial Peripheral Interface)가 충전기용 인터페이스로 사용되는 실시 예를 보이고 있다.4 shows an embodiment in which the Extended Serial Peripheral Interface (ESPI) is used as an interface for a charger.

도 4의 실시 예에서와 같이, mp3(400) 충전 시, 충전기(500)의 전원을 ESPI(Extended Serial Peripheral Interface)(100)의 배터리 단자(21)가 인식하여 전원을 충전하고, 상기 충전된 배터리의 전원을 파워단자(22)가 출력한다.As in the embodiment of FIG. 4, when charging the mp3 400, the battery terminal 21 of the Extended Serial Peripheral Interface (ESPI) 100 recognizes the power of the charger 500 to charge the power, and is charged. The power terminal 22 outputs the power of the battery.

상기와 같이 ESPI(Extended Serial Peripheral Interface)(100)에 전달된전원은 상기 ESPI(Extended Serial Peripheral Interface)(100)가 삽입되는 ESPI(Extended Serial Peripheral Interface) 소켓(200)의 제1배터리 단자(21')와 제1파워단자(22')를 통하여 mp3를 충전시킨다.The power delivered to the Extended Serial Peripheral Interface (ESPI) 100 as described above is the first battery terminal 21 of the Extended Serial Peripheral Interface (ESPI) socket 200 into which the Extended Serial Peripheral Interface (ESPI) 100 is inserted. ') And the first power terminal 22' to charge the mp3.

상기 씨리얼인터페이스(30)는 도 1a에서와 같이, 칩(Chip)을 선택해서 전자신호를 컨트롤하는 컨트롤 신호가 지나가는 통로인 CS(Chip Select)단자(31)와 타이밍을 조절하는 클럭단자(32)와 다운로드받을 데이터를 인/아웃 하는 Data I/O(In/Out) 단자(3)와 USB(Universal Serial Bus) 다운로더(600)에서 데이터를 읽고 쓸 수 있는 R/W(Read/Write) 단자(34)로 구성된다.As shown in FIG. 1A, the serial interface 30 selects a chip and selects a chip select terminal 31, which is a passage through which a control signal for controlling an electronic signal passes, and a clock terminal 32 for adjusting timing. And R / W (Read / Write) terminal for reading and writing data from Data I / O (In / Out) terminal (3) and USB (Universal Serial Bus) downloader 600 to in / out data to be downloaded. 34).

도 5는 상기 ESPI(Extended Serial Peripheral Interface)가 USB(Universal Serial Bus) 다운로더를 통한 다운로드용 인터페이스로 사용되는 실시 예를 보이고 있다.5 illustrates an embodiment in which the Extended Serial Peripheral Interface (ESPI) is used as an interface for download through a Universal Serial Bus (USB) downloader.

도 5의 실시 예 에서와 같이, USB(Universal Serial Bus) 다운로더(600)를 통하여 mp3(400)에 음악데이타를 다운로드받을 때, 상기 음악데이타는 ESPI(Extended Serial Peripheral Interface)의 CS(Chip Select)단자(31)와 클럭단자(32)와 Data I/O(In/Out)단자(33)와 R/W(Read/Out)단자(34)를 통하여, 상기 ESPI(Extended Serial Peripheral Interface)(100)의 단자가 삽입되는 mp3(400)의 내부에 설치된 ESPI(Extended Serial Peripheral Interface)의 소켓(200)으로 전달된다.As in the embodiment of Figure 5, when downloading the music data to the mp3 (400) via the USB (Universal Serial Bus) downloader 600, the music data is CS (Chip Select) of the Extended Serial Peripheral Interface (ESPI) Extended Serial Peripheral Interface (ESPI) 100 through a terminal 31, a clock terminal 32, a Data I / O (In / Out) terminal 33, and an R / W (Read / Out) terminal 34. ) Is delivered to the socket 200 of the Extended Serial Peripheral Interface (ESPI) installed in the mp3 (400) is inserted.

상기 ESPI(Extended Serial Peripheral Interface)의 소켓(200)으로 전달된 음악데이타는 ESPI(Extended Serial Peripheral Interface) 소켓(200)의 제1클럭단자(32')와 제1Data I/O(In/out)단자(33')와 R/W(Read/Out)단자(34')를 통하여 mp3(400)에 다운로드 된다.The music data transferred to the socket 200 of the extended serial peripheral interface (ESPI) is the first clock terminal 32 ′ and the first data I / O (In / out) of the extended serial peripheral interface (ESPI) socket 200. It is downloaded to the mp3 400 through the terminal 33 'and the R / W (Read / Out) terminal 34'.

본 발명은 상기 실시 예외에도 본 발명이 가지고 있는 청취기능을 위한 오디오인터페이스, 충전기능을 위한 파워인터페이스 및 USB(Universal Serial Bus) 다운로더를 이용한 씨리얼인터페이스가 적용되는 모든 범위에 적용될 수 있다.The present invention can be applied to all ranges to which an audio interface for a listening function, a power interface for a charging function, and a serial interface using a USB (Universal Serial Bus) downloader are applied to the present invention.

따라서, 본 발명에 의하면, 한 개의 인터페이스에 오디오기능, 충전기능, 및 USB(Universal Serial Bus) 다운로더를 통한 다운로드기능을 포함하므로써, 제품상 부품이 차지하는 공간을 최소화하고 크기가 소형화되며 단가 및 생상공정을 낮출 수 있는 효과가 있다.Therefore, according to the present invention, by including an audio function, a charging function, and a download function through a USB (Universal Serial Bus) downloader in one interface, the space occupied by the components on the product can be minimized, the size is reduced, and the cost and production process There is an effect that can be lowered.

Claims (4)

전위를 조절하는 그라운드(Ground)단자와 이어폰의 좌측스피커로 음성신호를 전달하는 래프트(Left)단자와 이어폰의 우측스피커로 음성신호를 전달하는 라이트(Right)단자로 구성된 오디오 인터페이스와 ESPI(Extended Serial Peripheral Interface) 소켓에 삽입되는 두단자 핀으로 구성된 파워인터페이스;Audio interface and ESPI (Extended Serial) consisting of a ground terminal for adjusting the potential and a left terminal for transmitting a voice signal to the left speaker of the earphone and a right terminal for transmitting a voice signal to the right speaker of the earphone A power interface consisting of two terminal pins inserted into a socket; 배터리를 충전시키는 배터리단자와 전원을 출력하는 파워단자로 구성; 및A battery terminal for charging the battery and a power terminal for outputting power; And 전자신호를 컨트롤하는 컨트롤신호가 지나가는 통로인 CS(Chip Select)단자와 타이밍을 조절하는 클럭단자와 Data I/O(In/Out)단자와 USB(Universal Serial Bus)다운로더에서 데이터를 읽고 쓰기 기능을 하는 R/W(Read/Write)단자로 구성된 씨리얼인터페이스;를 포함하는 것을 특징으로 하는 ESPI(Extended Serial Peripheral Interface).The CS (Chip Select) terminal, the path through which control signals for controlling electronic signals pass, the clock terminal for adjusting timing, the Data I / O (In / Out) terminal, and the USB (Universal Serial Bus) downloader are used to read and write data. Extended Serial Peripheral Interface (ESPI) comprising a; a serial interface consisting of R / W (Read / Write) terminal. 제 1항에 있어서,The method of claim 1, 상기 삼단자 핀의 지름이 1.5π ~ 2π인 것을 특징으로 하는 ESPI(Extended Serial Peripheral Interface).Extended Serial Peripheral Interface (ESPI), characterized in that the diameter of the three-terminal pin is 1.5π ~ 2π. 제 1항에 있어서,The method of claim 1, 상기 각 단자들이 삽입되는 ESPI(Extended Serial Peripheral Interface) 소켓을 포함하는 것을 특징으로 하는 ESPI(Extended Serial Peripheral Interface).Extended Serial Peripheral Interface (ESPI), characterized in that it comprises an Extended Serial Peripheral Interface (ESPI) socket is inserted into each terminal. 제 2항에 있어서,The method of claim 2, 상기 삼단자 핀의 지름이 바람직하게는 2π인 것을 특징으로 하는 ESPI(Extended Serial Peripheral Interface).Extended Serial Peripheral Interface (ESPI), characterized in that the diameter of the three-terminal pin is preferably 2π.
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KR100771785B1 (en) * 2006-10-09 2007-10-30 삼성전기주식회사 Printed circuit board having firm-ware downloading terminal

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KR100268488B1 (en) * 1997-12-12 2000-10-16 윤종용 Slim cd-rom drive with versatile cartridge apparatus
KR100571905B1 (en) * 1998-12-07 2006-07-25 삼성전자주식회사 Apparatus for commonly using a jack
KR200222019Y1 (en) * 2000-09-23 2001-05-02 주식회사유니텍전자 A cassette-type mp3 player having the connecting part integrated with communication ports and the charging part
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