CN218383839U

CN218383839U - Parallel port expanding device

Info

Publication number: CN218383839U
Application number: CN202222734857.9U
Authority: CN
Inventors: 王世鹏
Original assignee: Ziguang Computer Technology Co Ltd
Current assignee: Ziguang Computer Technology Co Ltd
Priority date: 2022-10-17
Filing date: 2022-10-17
Publication date: 2023-01-24
Anticipated expiration: 2032-10-17

Abstract

The utility model discloses a parallel port extension fixture, a serial communication port, include: the system comprises a mainboard, a DB25 connector and a parallel port expansion card; the system comprises a mainboard, a megacore CPU, a parallel port expansion card and a Peripheral Component Interface (PCI) interface, wherein the megacore CPU on the mainboard is in communication connection with an M.2 connector on the mainboard, and the parallel port expansion card is inserted into the M.2 connector on the mainboard, so that the parallel port expansion card converts a Peripheral Component Interface Express (PCIE) signal sent by the megacore CPU through the M.2 connector into a parallel port signal; the DB25 connector is connected with the parallel port expansion card to output parallel port signals. The utility model provides a technical scheme has realized the extension and has mouthful under the condition that does not carry out the reprint to the mainboard.

Description

Parallel port expanding device

Technical Field

The utility model relates to a computer hardware field, concretely relates to parallel port extension device.

Background

At present, parallel ports on a domestic desktop computer are mostly led out from an embedded controller on a mainboard, and the number of the parallel ports is generally one. Some financial industry users require more chassis native parallels to support more parallel peripheral devices. If the mainboard is subjected to the plate-changing design, a large amount of labor, material resources, financial resources and time cost are increased, great uncertainty is brought to material supply, and the design is not flexible.

Therefore, how to expand the number of parallel ports without changing the main board is a considerable problem.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model discloses the embodiment provides a parallel port extension device to realized the extension parallel port under the condition of not revising the mainboard.

The embodiment of the utility model provides a parallel port extension device, include: the system comprises a mainboard, a DB25 connector and a parallel port expansion card; the PCI express bus comprises a megacore CPU (central processing unit) on a mainboard and an M.2 connector on the mainboard, wherein the megacore CPU on the mainboard is in communication connection with the M.2 connector on the mainboard, and a parallel port expansion card is inserted into the M.2 connector on the mainboard, so that the parallel port expansion card converts a PCIE signal sent by the megacore CPU through the M.2 connector into a parallel port signal; the DB25 connector is connected with the parallel port expansion card to output the parallel port signal.

Optionally, the parallel port expansion card includes a card body, a gold finger, a parallel port signal conversion chip and a 25-pin connector; the golden finger is a golden finger with an M.2 interface specification, is positioned at one end of the card main body and is used for inserting the card main body into an M.2 connector of a computer mainboard; the parallel port signal conversion chip is positioned on the card main body, is in communication connection with the golden finger and is used for converting PCIE signals into parallel port signals; the 25-pin connector is positioned at one end of the card main body except the position of the golden finger, is connected with the parallel port signal conversion chip and is used for being connected with the DB25 connector.

Optionally, the model of the parallel port signal conversion chip is Qinming CH384L.

Optionally, the parallel port expansion card further comprises a housing, the housing comprises an exposure slot of the 25-pin connector, and the card body is mounted in the housing so as to isolate the parts of the card body except the 25-pin connector from the outside through the housing.

Optionally, the apparatus further includes a clock chip, and the clock chip is in communication connection with the mega-core CPU and the m.2 connector on the motherboard, respectively.

Optionally, the model of the clock chip is Renesas 5P49V6965.

Optionally, the m.2 connector on the motherboard is a wifim.2 connector.

Optionally, the mega-core CPU and the wifim.2 connector are connected by a PCIE X1 signal.

Optionally, the mega-core CPU and the wifim.2 connector are further connected through a USB signal.

Optionally, the device further includes a patch cord and a chassis with a reserved parallel slot, the parallel slot on the chassis is used for clamping the DB25 connector, and the patch cord is used for switching the 25-pin connector and a corresponding pin of the DB25 connector.

The technical scheme provided by the application has the following advantages:

the technical scheme provided by the application makes a standard parallel port expansion card of an M.2 interface based on a parallel port signal conversion chip, and has the advantages of small volume, light weight and convenience in installation. The megacore CPU on the mainboard is in communication connection with the M.2 connector on the mainboard, and the parallel port expansion card is inserted into the M.2 connector on the mainboard, so that the parallel port expansion card converts a PCIE signal sent by the megacore CPU through the M.2 connector into a parallel port signal; the DB25 connector is connected with the parallel port expansion card to output the parallel port signal. Therefore, the existing M.2 connector in the mainboard is utilized for expansion, and if a user needs to use the M.2 connector to connect other equipment, the parallel port expansion card can also be pulled out, so that the flexibility is very strong, the problem of material supply is solved, and meanwhile, the problem that a large amount of resources and time are consumed by the mainboard re-version design is solved.

In addition, the card body of the parallel port expansion card is provided with an M.2 golden finger and a 25-pin connector. The PCIE signal of the mega-core CPU only needs to be connected to an M.2 connector arranged on the mainboard by the computer mainboard, when the computer mainboard is used, the parallel port expansion card of the M.2 is inserted into the M.2 connector on the mainboard, the PCIE signal of the mega-core CPU reaches the parallel port expansion card through the M.2 connector, the PCIE signal continues to reach a parallel port signal conversion chip through PCB wiring of the parallel port expansion card, the parallel port signal conversion chip performs signal conversion, the converted signal reaches the 25-pin connector, a user only needs to connect the 25-pin connector to an external DB25 connector (for example, a DB25 connector preset on a computer case) through an external connection line, parallel port expansion can be achieved, and the position of each element on the computer mainboard does not need to be changed.

Drawings

The features and advantages of the invention will be more clearly understood by reference to the accompanying drawings, which are schematic and should not be understood as imposing any limitation on the invention, in which:

fig. 1 is a schematic structural diagram of a parallel port expansion card according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a parallel port expanding device according to an embodiment of the present invention;

fig. 3 is another schematic structural diagram of a parallel port expanding device according to an embodiment of the present invention;

the reference numbers in the figure are 1-card body, 2-golden finger, 3-parallel port signal conversion chip, 4-25 pin connector, 5-mainboard, 6-DB25 connector, 7-clock chip and 8-parallel port expansion card.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, in one embodiment, a parallel port expansion card 8 specifically includes a card body 1, gold fingers 2, a parallel port signal conversion chip 3, and a 25-pin connector 4. The golden finger 2 is a golden finger 2 with an M.2 interface specification, the golden finger 2 is a golden conductive contact piece which is arranged on computer hardware such as a memory bank and a memory slot and a display card slot, and the surface of the golden finger 2 is plated with gold and the conductive contact pieces are arranged like fingers, and the golden finger is positioned at one end of the card main body 1 and used for inserting the card main body 1 into an M.2 connector of a computer mainboard 5; the parallel port signal conversion chip 3 is positioned on the card body 1, is in communication connection with the golden finger 2, and is used for converting PCIE signals into parallel port signals; the 25-pin connector 4 is positioned at one end of the card body 1 except the position of the gold finger 2, is connected with the parallel port signal conversion chip 3 and is used for externally connecting a connector of an expansion parallel port.

Specifically, in order to solve the less problem of parallel port quantity that provides on the domestic desktop mainboard, the embodiment of the utility model provides a parallel port expansion card 8, this expansion card is small, light, easy to assemble based on M.2 interface specification preparation. Considering that the USB interface and the serial port on the motherboard 5 have higher use frequency and are not convenient to occupy, the other memory interfaces and the video card interfaces have separate use approaches. Therefore, the embodiment of the utility model provides a make the less M.2 interface card of a volume, card main part 1's one end has set up the golden finger 2 of M.2 standard pattern to make card main part 1 can insert the M.2 connector in mainboard 5. Then, the parallel port signal conversion chip 3 is soldered on the card body 1 through the PCB trace, the input pin of the parallel port signal conversion chip 3 is connected with the gold finger 2, and in addition, a 25-pin connector 4 is manufactured at the other end of the card body 1, and the connector is connected with the output pin of the parallel port signal conversion chip 3 through the PCB trace. When the user needs to expand the computer parallel port, only need to insert card main part 1 through golden finger 2 into the M.2 connector of mainboard 5, the PCIE signal of million core CPU reaches M.2 connector, the PCIE signal reaches parallel port signal conversion chip 3 through inserted golden finger 2 and carries out parallel port signal conversion, and pass through 25 needle connector 4 outputs with the parallel port signal after the conversion, the user is connected to outside parallel port connector through the parallel port signal of external cable with 25 needle connector 4 outputs, can realize the extension of parallel port, thereby be convenient for the user to use the projecting apparatus, the equipment of parallel port connection such as printer.

Specifically, in the embodiment of the present invention, the parallel signal conversion chip 3 adopts a homemade Qinmui CH384L chip, and the CH384L is a four-serial port and parallel port chip of the PCIE bus, and includes four asynchronous serial ports compatible with 16C550 or 16C750 and one EPP/ECP enhanced bidirectional parallel port. The driver supports most operating systems of Windows 98/ME/NT4.0/2000/XP/Vista/Win7/Server2003 and Linux, and supports various parallel port protocols of SPP, nibble, byte, PS/2, EPP and ECP, thereby enabling the parallel port expansion card 8 provided by the embodiment of the utility model to adapt to various use scenes, and further improving the flexibility of a parallel port expansion scheme.

Specifically, in the embodiment of the utility model provides an in, for further protection and extend the internal circuit of card 8, and extend the card 8 and still include the casing, card main part 1 is installed in the casing, and will extend the internal circuit of card 8 and keep apart with the external world through the casing, avoid being infected with of dust, water stain. The housing is provided with an exposing slot of the 25-pin connector 4 so that only the 25-pin connector 4 is exposed to facilitate connection of the patch cable to the 25-pin connector 4.

Referring to fig. 2 and fig. 3, a parallel port expansion device using the parallel port expansion card 8 according to an embodiment of the present invention specifically includes a main board 5, a DB25 connector 6 and the parallel port expansion card 8 according to the embodiment.

Wherein, M.2 connector communication connection on million core CPU on the mainboard 5 and the mainboard 5 for on being connected to M.2 connector with the PCIE signal of the million core CPU on the mainboard 5, and the M.2 connector on mainboard 5 is inserted to parallel port expansion card 8, thereby the M.2 connector communication connection is passed through to the million core CPU on parallel port expansion card 8 and the mainboard 5, and the PCIE signal of million core CPU output passes through the golden finger 2 input parallel port signal conversion chip 3 of parallel port expansion card 8. The DB25 connector 6 is connected to the 25-pin connector 4 in the parallel port expansion card 8, so that the DB25 connector 6 is exposed, and a user can insert a device using a parallel port into the DB25 connector 6 according to actual needs, thereby achieving the purpose of expanding the parallel port, and the detailed process of signal transfer may refer to the description of the above-mentioned embodiment related to the parallel port expansion card 8, and is not described herein again.

Specifically, the embodiment of the utility model provides a parallel port extension device still includes clock chip 7, and this clock chip 7 respectively with M.2 connector communication connection on megacore CPU and the mainboard 5. Specifically, in order to synchronize the operations of the controller, the register, and other elements in the mega-core CPU, the mega-core CPU is usually connected to a clock chip 7, so as to ensure the signal synchronization of the mega-core CPU. Because the embodiment of the utility model provides a reliability that the operation of the M.2 parallel port expansion card 8 of preparation needs clock signal to guarantee signal conversion work equally, thereby be connected clock chip 7 additionally with the M.2 connector on mainboard 5, when parallel port expansion card 8 inserts the M.2 connector, clock chip 7 can provide clock signal for parallel port expansion card 8 through the M.2 connector equally, maintain parallel port expansion card 8's work synchronization, and need not additionally to add other clocks, mainboard 5's design need not to change the version, hardware resources and design time cost have been saved, the flexibility of parallel port extension scheme has further been improved.

Specifically, in an embodiment, the embodiment of the present invention provides that the mega-core CPU and the wifim.2 connector are connected through a PCIE X1 signal (PCIE signal for extending the sound card and the network card). In particular, the m.2 interface of current homemade desktop computers generally includes an m.2 solid state disk interface and a wifim.2 connector, and the wifim.2 connector is used far less frequently than the m.2 solid state disk connector. Therefore, the embodiment of the utility model provides a realize parallel port extension scheme based on WIFIM.2 connector, when the user does not need external wireless network card, can insert WIFIM.2 connector with parallel port expansion card 8, increase the primary parallel port quantity that the machine case can support, if the user needs external wireless network card, can use the wiFi function again, have very high flexibility.

Specifically, in an embodiment, the embodiment of the utility model provides a still establish USB signal connection between megacore CPU and WIFIM.2 connector to reserve USB type-A interface and be convenient for follow-up further extension and connect equipment such as USB flash disk.

Specifically, in an embodiment, the embodiment of the utility model provides an adopt million core CPU and mainboard platform, be applied to domestic computer platform with this scheme, when reducing hardware use cost, solve the native problem that the quantity is less that connects of domestic computer.

Specifically, in an embodiment, the embodiment of the utility model provides a parallel port extension device still includes the patch cord and reserves the quick-witted case of parallel port trench, and the machine case is used for holding desktop computer's all kinds of hardware components, and the parallel port trench that presets on the machine case is used for joint DB25 connector 6 to through the patch cord with 25 needle connectors 4 and DB25 connector 6's corresponding stitch switching, be convenient for with parallel port extension card 8's output connection to machine case, make the user use the extension parallel port more conveniently, improve the flexibility of parallel port extension scheme.

Specifically, the above steps are described below as a practical embodiment.

On the M.2 connector of onboard was all received to the PCIE signal of million core CPU on the computer motherboard 5 and USB signal, clock chip 7 provided 100M PCIE CLK for million core CPU and M.2 connector, in the embodiment of the utility model provides an, clock chip 7 can select Renesas 5P49V6965, can adapt the use scene under 1.5V, 2.8V and the three kinds of voltage conditions of 3.3V, high performance, low phase noise improve clock signal quality, only use this example, do not use this as the limit. The M.2 parallel port expansion card 8 is welded with an Qinmao CH384L chip, receives PCIE X1 signals transferred by a megacore CPU through the CH384L chip, transfers parallel port PAR signals to the 25-pin connector 4, makes RS232 switching cables for switching the 25-pin connector 4 to the DB25 connector 6, then gives a rear window of a case through the RS232 switching cables, and connects the DB25 connector 6 to realize the function of external parallel port peripheral equipment.

Through the steps, the technical scheme provided by the application manufactures the parallel port expansion card 8 with the M.2 interface specification based on the parallel port signal conversion chip, and has the advantages of small volume, light weight and convenience in installation. The card body of the parallel port expansion card 8 is provided with an M.2 gold finger and a 25-pin connector. The computer mainboard only needs to connect the PCIE signal of the mega-core CPU to the self-contained M.2 connector on the mainboard, when in use, the parallel port expansion card 8 of the M.2 is inserted into the M.2 connector on the mainboard, the PCIE signal of the mega-core CPU reaches the parallel port expansion card 8 through the M.2 connector, and continues to reach the parallel port signal conversion chip through the PCB wiring of the parallel port expansion card 8, so that the parallel port signal conversion chip performs signal conversion, the converted signal reaches the 25-pin connector, and a user only needs to connect the 25-pin connector to the external DB25 connector (for example, a preset DB25 connector on a computer case) through an external connection line, and the parallel port expansion can be realized.

The embodiment of the utility model provides a parallel port expansion card 8 and parallel port expanding unit need not to make the position of each component change on the computer motherboard, utilize the M.2 connector that has existed in the mainboard to expand, if the user need use the M.2 connector to connect other equipment and also can extract parallel port expansion card 8, have very strong flexibility, when having solved the supply of goods problem, still solved the problem that needs reprint the design to the mainboard and consume a large amount of resources and time again.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A parallel port expansion device, comprising: the system comprises a mainboard, a DB25 connector and a parallel port expansion card;

the megacore CPU on the mainboard is in communication connection with the M.2 connector on the mainboard, and the parallel port expansion card is inserted into the M.2 connector on the mainboard, so that the parallel port expansion card converts a PCIE signal sent by the megacore CPU through the M.2 connector into a parallel port signal;

the DB25 connector is connected with the parallel port expansion card to output the parallel port signal.

2. The parallel port expansion device of claim 1, wherein the parallel port expansion card comprises a card body, a gold finger, a parallel port signal conversion chip and a 25-pin connector;

the golden finger is a golden finger with an M.2 interface specification, is positioned at one end of the card main body and is used for inserting the card main body into an M.2 connector of a computer mainboard;

the parallel port signal conversion chip is positioned on the card main body, is in communication connection with the golden finger and is used for converting PCIE signals into parallel port signals;

the 25-pin connector is positioned at one end of the card main body except the position of the golden finger, is connected with the parallel port signal conversion chip and is used for being connected with the DB25 connector.

3. The parallel port expansion device of claim 2, wherein the parallel port signal conversion chip is of the size of Qinmu CH384L.

4. The parallel port expansion device of claim 2, wherein the parallel port expansion card further comprises a housing, the housing comprises an exposure slot of the 25-pin connector, and the card body is installed in the housing so as to isolate the parts of the card body except the 25-pin connector from the outside through the housing.

5. The parallel port expansion device of claim 1, further comprising a clock chip, wherein the clock chip is communicatively connected to the mega-core CPU and the m.2 connector on the motherboard, respectively.

6. The parallel port expansion device of claim 5, wherein the model of the clock chip is Renesas 5P49V 696.

7. The parallel port expansion device of claim 1, wherein the m.2 connector on the motherboard is a wifim.2 connector.

8. The parallel port expansion device according to claim 7, wherein the mega-core CPU and the wifim.2 connector are connected by PCIE X1 signal.

9. The parallel port expansion device of claim 8, wherein the mega-core CPU and the wifim.2 connector are further connected by USB signals.

10. The parallel port expansion device of claim 2, further comprising a patch cord and a chassis with a reserved parallel port slot, wherein the parallel port slot on the chassis is used for clamping the DB25 connector, and the patch cord is used for switching corresponding pins of the 25-pin connector and the DB25 connector.