CN109828937B - Multifunctional extension circuit of computer - Google Patents
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- CN109828937B CN109828937B CN201711181406.4A CN201711181406A CN109828937B CN 109828937 B CN109828937 B CN 109828937B CN 201711181406 A CN201711181406 A CN 201711181406A CN 109828937 B CN109828937 B CN 109828937B
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Abstract
The invention provides a multifunctional extension circuit of a computer, which comprises: the signal input interface is used for inputting signals of the computer main board into the multifunctional expansion circuit; a switching circuit for switching signals input into the multifunctional extension circuit to the inter-board interconnection interface; the expansion circuit is used for converting and expanding signals transmitted from the inter-board interconnection interface; the signal output interface is used for outputting the signal converted and expanded by the expansion circuit; the switching circuit and the expansion circuit are connected through the FPC in the inter-board interconnection interface, and the switching circuit can be connected with the expansion circuits with various expansion functions. The invention can realize the expansion of customized functions such as serial ports, hard disks and the like in the CD-ROM drive position of the computer, and meets the functional requirements of diversification and customization of users.
Description
Technical Field
The invention relates to the technical field of hardware equipment, in particular to a multifunctional computer expansion circuit.
Background
Currently, portable computers such as tablet computers and personal PCs are gradually advancing toward miniaturization, portability and weight saving. Because of the limitation of small volume of the portable computer, the portable computer has fewer accessories, and is difficult to meet the diversified functional requirements of users in different industries on computer hardware. Therefore, users have put an urgent need for a multifunctional expansion technology for realizing user-defined functions such as serial ports and hard disks through optical drive bits of a portable computer.
In the prior art, the functional input/output interface of the portable computer is generally integrated in the product itself, and it is difficult to meet the application and customer customization requirements of various devices. For example, in the prior art, the optical drive module housing of the reinforced notebook computer is often integrated into a part of the reinforced notebook computer housing, or is mounted on the reinforced notebook computer housing in a fixing manner such as a screw, a buckle, etc., so that only the optical drive can be expanded in function, but other functions cannot be realized.
Besides the CD-ROM function, part of the multifunctional extension products in the prior art have single circuit structure, and the transfer module of the main board signal and the extension module of the transfer signal are integrated on one PCB, so that only one type of function extension can be realized, and the requirement of a composite function cannot be met. In addition, when the multifunctional expansion module is replaced, the whole PCB needs to be replaced, so that the use is inconvenient, and the cost of the transfer module resource is increased.
Therefore, a new type multifunctional expansion circuit is needed to solve the problems that the optical drive in the portable computer is difficult to realize flexible expansion of multiple functions and to meet the customization demands of users.
Disclosure of Invention
The multifunctional computer expansion circuit provided by the invention can realize the multifunctional expansion of the portable computer in the CD driver position aiming at the defects of the prior art, and is rapid in installation, portable and reliable.
The invention provides a multifunctional extension circuit of a computer, which comprises:
The signal input interface is used for inputting signals of the computer main board into the multifunctional expansion circuit;
a switching circuit for switching signals input into the multifunctional extension circuit to an inter-board interconnection interface;
the expansion circuit is used for converting and expanding signals transmitted from the inter-board interconnection interface;
the signal output interface is used for outputting the signal converted and expanded by the expansion circuit;
the switching circuit and the expansion circuit are connected through the FPC in the inter-board interconnection interface, and the switching circuit can be connected with the expansion circuit with various expansion functions.
Optionally, the signal input interface is a high-speed connector connected with a motherboard of the computer.
Optionally, the signals input to the multifunctional extension circuit include serial ports, PCIE, SATA, USB and/or power signals.
Optionally, the expansion circuit directly switches the serial port and/or SATA signal; and/or converting the PCIE signal into a serial port or network interface signal through a chip; and/or converting the USB signal into a serial port or SPI interface signal through a chip.
Optionally, the serial signal directly transferred by the expansion circuit and the serial signal converted by the PCIE signal through a chip may be converted with each other.
Optionally, the serial port signal directly converted by the expansion circuit, the serial port signal converted by the PCIE signal through the chip, and the serial port signal converted by the USB signal through the chip are RS232, RS422, or RS485 interface signals.
Optionally, the PCIE signal is converted into a serial port signal through a PCIE-UART chip, and the number of serial ports is controlled by modifying a driver of the PCIE-UART chip.
Optionally, the PCIE signal is converted into at least two network interface signals through a chip, where at least one path of PCIE signal is output to the signal output interface, and at least another path of PCIE signal is connected to the customer installation card.
Optionally, the USB signal is expanded into at least two paths of USB signals by the USB expansion chip, at least one path of USB signals is converted into a serial port signal by the USB-to-UART chip, and at least another path of USB signals is converted into an SPI interface signal by the USB-to-SPI chip.
Optionally, the above-mentioned expansion circuit is connected to a rectangular connector as the signal output interface through a WBT bus.
The multifunctional computer expansion circuit provided by the invention can realize expansion of customized functions such as serial ports, hard disks and the like in an optical drive position of a portable computer, only replaces an expansion function circuit, reduces cost, and can also meet the diversified and customized functional requirements of users on the portable computer.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an application environment of a multifunctional expansion circuit according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a multifunctional extended circuit structure for extending serial port functions according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a multifunctional expansion circuit for expanding hard disk functions according to an embodiment of the present invention;
Fig. 4 is a schematic diagram of an overall structure of a multi-functional extension circuit according to an embodiment of the present invention for extending a customized function.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order to realize multifunctional expansion in an optical drive position of a portable notebook, the invention provides a multifunctional expansion circuit of a computer.
Fig. 1 is a schematic diagram of an application environment of a multifunctional extension circuit according to an embodiment of the present invention. As shown in the figure, the application environment of the multifunctional extension circuit provided in this embodiment is a multifunctional extension module applied to an optical drive of a portable computer. Specifically, the multifunctional expansion module comprises a shell, an expansion bin, an upper cover and an expansion module mechanism, wherein the expansion bin is used for accommodating the multifunctional expansion circuit module. The housing and the upper cover together form the outer shell of the expansion bin. The side wall of the shell is provided with an opening for accommodating the interface of the extension of the multifunctional extension circuit in the extension bin. One end of the shell is provided with an expansion module mechanism to assist in ejecting and loading the CD-ROM multifunctional expansion module.
Embodiment one:
Fig. 2 is a schematic diagram of a multi-functional expansion circuit for expanding serial port functions according to an embodiment of the present invention. The multifunctional expansion circuit for expanding the serial port function can realize serial port expansion of multiple paths of high-speed selectable RS-232, RS-422 or RS-485.
Specifically, in the expansion bin of the application environment of the embodiment, an IO1 circuit board and an IO2 circuit board are integrated. The IO1 circuit board is used for realizing butt joint with a main board of the portable notebook computer, the IO2 board is used for realizing a serial port logic function, and the IO1 circuit board and the IO2 circuit board are connected with each other through an FPC (Flexible Printed Circuit ).
The IO1 board is in butt joint with the main board of the portable computer, and signals such as PCIE, serial ports and power supply on the main board of the computer are transferred. Specifically, the model of the computer motherboard in this embodiment is JMB-1812MB, and the IO1 circuit board is connected with the JMB-1812MB of the computer motherboard through a connector. Preferably, the connection is made using a 52P (Pin) high speed connector. The computer motherboard JMB-1812MB is provided with 1 90-degree connector female socket with the dimensions of 2 x 26P and 0.8 mm, and the IO1 circuit board is also provided with 1 90-degree connector female socket with the dimensions of 2 x 26P and 0.8 mm.
In addition, the IO1 circuit board transfers signals input by the JMB-1812MB of the portable computer motherboard to two FPC connection ports, typically, the FPC connection ports have a specification of 1 x 30p and 0.5 mm. In particular, the signals of the portable computer motherboard JMB-1812MB input IO1 circuit board include, but are not limited to, 2-way serial signals, 1-way PCIE signals, and power signals of 3.3 or 5V, for example. Optionally, 2 serial port signals and 1 PCIE signal can be output to the IO2 circuit board through one FPC, and the power signal is output to the IO2 circuit board through another FPC. The IO2 circuit board is also provided with two FPC connecting ports with the diameter of 1 x 30P and the diameter of 0.5 mm, and the FPC connecting ports are respectively connected with the two FPCs.
The IO2 circuit board realizes a serial port logic function. Specifically, the IO2 circuit board directly outputs 2 serial port signals transferred from the IO1 circuit board; the 1-path PCIE signals transferred from the IO1 circuit board are converted through a third party chip for converting PCIE into UART, and particularly, the number of serial ports output by the third party chip can be flexibly adjusted by modifying a driving program of the third party chip. Typically, the third party chip may convert 1 path PCIE signals into 8 paths of serial ports at most. Particularly, the 2-way motherboard native serial port output by the IO2 circuit board can be switched with 2-way serial ports in 8-way serial ports converted from the third party chip of PCIE to UART.
The third party chip may be a PCIE to serial chip, a USB to serial chip, a PCI to serial chip, or the like.
Typically, the 8-path serial port converted from the third party chip for converting PCIE to UART through the IO2 circuit board can be output through the RS-232/422/485 interface level converter. The interface output by the IO2 circuit board can be a 9-needle RS-232 interface, a 9-needle or 15-needle RS-422 or RS-485 interface, and the serial port baud rate can reach 1Mbps at the highest.
The multifunctional extension circuit provided by the embodiment can conveniently and rapidly realize the extension of serial port functions in the CD-ROM drive position of the computer, and the circuit switching function can be realized by the primary 2-way serial port of the main board and the 2-way serial port transferred out by the third-party chip, so that the cost of the serial port can be controlled.
Embodiment two:
Fig. 3 is a schematic diagram of a multifunctional expansion circuit for expanding functions of a hard disk according to an embodiment of the present invention. The multifunctional expansion circuit for expanding the hard disk functions provided by the embodiment can realize the expansion of the memory modules with various interface types.
Specifically, in the expansion bin of the application environment of the embodiment, an IO1 circuit board, an IO3 circuit board, and a hard disk are integrated. The IO1 circuit board is used for realizing butt joint with a main board of the portable notebook computer, and the IO3 circuit board is used for realizing a hard disk expansion function of the multifunctional expansion circuit. One end of the IO3 circuit board is connected with the IO1 circuit board through the FPC, and the other end of the IO3 circuit board is connected with the hard disk through a standard SATA connector.
The IO1 circuit board is in butt joint with the main board of the portable computer, and typically, the IO1 circuit board provided by the embodiment is connected to the JMB-1812MB main board of the portable computer. And signals such as PCIE, serial ports, power supply and the like on a JMB-1812MB mainboard of the portable computer are transferred through the high-speed connector. Typically, the IO1 circuit board is connected with the JMB-1812MB mainboard through a 52P high-speed connector, a 2X 26P 90-degree connector socket of 0.8 mm is arranged on the JMB-1812MB mainboard, and a 2X 26P 90-degree connector socket of 0.8 mm is also arranged on the IO1 circuit board. In particular, the signals of the IO1 circuit board input by the JMB-1812MB mainboard of the portable computer comprise, but are not limited to, 1-path SATA signals.
In addition, the IO1 circuit board transfers signals input by the JMB-1812MB of the portable computer main board to an FPC connecting port, wherein the specification of the FPC connecting port is 1 x 10P and 0.5 mm, and the FPC connecting port is used for transferring SATA signals of the IO1 circuit board and power signals of 3.3 or 5V for example to the IO3 circuit board.
One end of the IO3 circuit board is provided with an FPC connecting port with the specification of 1 x 10P and 0.5 mm, and the FPC connecting port is used for being connected with the IO1 circuit board through the FPC. The other end of the IO3 circuit board is provided with a standard SATA connector female socket of 22P (7Pin+15Pin) and 1.27 mm for connecting with a hard disk interface. In particular, the IO3 circuit board is a flexible and hard combination board, can be made into various structure sizes and interface types according to different requirements, and supports a plurality of interface types of storage modules including but not limited to a 1.8-inch hard disk, M-SATA, CFAST and the like.
The multifunctional expansion circuit provided by the embodiment can conveniently and rapidly realize the expansion of the hard disk function in the CD-ROM drive position of the computer.
Embodiment III:
Fig. 4 is a schematic diagram showing an overall structure of a multi-functional extension circuit according to an embodiment of the present invention for extending a customized function. The multifunctional expansion module provided by the embodiment can realize various customized and customized function expansion of serial ports, SPI buses, network interfaces and the like.
Specifically, in the expansion bin of the application environment of the embodiment, an IO1 circuit board, an IO4 circuit board, a customer mounting card, and a rectangular connector are integrated. The IO1 circuit board is used for realizing butt joint with a main board of the portable notebook computer, and the IO4 circuit board is used for matching with a customer installation card and simultaneously realizing functions of a serial port, an SPI, a network interface and the like. The IO1 circuit board is connected with the IO4 circuit board through the FPC, the IO4 circuit board is connected with the customer installation card through an electrical connection wire, and the outputs of the IO4 circuit board and the customer installation card are respectively connected to the rectangular connector.
Typically, in this embodiment, the motherboard of the portable computer is a JMB-1812MB motherboard, and the IO1 circuit board is connected to PCIE, serial port, USB, power supply, and other signals on the JMB-1812MB motherboard through a high-speed connector. Typically, the IO1 circuit board is connected with the JMB-1812MB mainboard through a 52P high-speed connector, a 2X 26P 90-degree connector socket of 0.8 mm is arranged on the JMB-1812MB mainboard, and a 2X 26P 90-degree connector socket of 0.8 mm is also arranged on the IO1 circuit board. Particularly, the signals of the IO1 circuit board input by the JMB-1812MB mainboard of the portable computer comprise but are not limited to 2 paths of serial signals, 1 path of PCIE signals and 1 path of USB signals.
In addition, the IO1 circuit board transfers signals transferred from the JMB-1812MB motherboard to two FPC connection ports, typically, the FPC connection ports have a specification of 1 x 30p and 0.5 mm. In particular, the signals of the portable computer motherboard JMB-1812MB input IO1 circuit board include, but are not limited to, 2-way serial signals, 1-way PCIE signals, 1-way USB signals, and power signals of 3.3 or 5V, for example. Optionally, 2 serial port signals, 1 PCIE signal and 1 USB signal can be output to the IO4 circuit board through one FPC, and power supply signals are output to the IO4 circuit board through another FPC. The IO4 circuit board is also provided with two FPC connecting ports with the diameter of 1 x 30P and the diameter of 0.5 mm, and the FPC connecting ports are respectively connected with the two FPCs.
The IO4 circuit board is connected with serial ports, PCIE, USB and power signals of the IO1 circuit board in a switching mode. Specifically, the 2 serial port signals of the IO1 circuit board switched by the IO4 circuit board are directly connected to the rectangular connector through the electrical connection wire, wherein the 1 serial port signal switching is set as an RS-232 interface, and the other 1 serial port switching is set as an RS-422/485 multiplexing serial port. Typically, 2 serial signals may be transferred out to a rectangular connector via a WTB bus of 1 x 10, 1.25 mm.
The 1-path USB signal transferred on the IO1 circuit board is expanded into 2-path USB signals, and the 2-path USB signals are respectively converted into 1-path serial port signals and 1-path SPI signals through the conversion chip. Typically, 1 path of USB signal is expanded into 2 paths of USB signals through a USB2514BI chip, and among the expanded 2 paths of USB signals, a MCP2221 chip in a 1-path USB-to-UART chip realizes a USB-to-serial port, and the serial port is set as an RS-232 interface; and in addition, the MCP2210 chip in the USB-to-SPI chip is used for realizing the USB-to-SPI, and the MCP2210 chip supports master-slave switching, and the speed can reach 18Mbit/s. In particular, both serial and SPI signals may be connected to rectangular connectors via WTB buses of1 x 10, 1.25 mm.
And 1-path PCIE signals transferred from the IO1 circuit board are converted into 2-path hundred-mega network signals on the IO4 circuit board. Typically, conversion from 1 PCIE signal to 2 LAN signals can be realized through an Intel I350AM2 chip, and the Intel I350AM2 chip supports 1000M/100M bandwidth adaptation. Wherein the 1-way LAN network signal is connected to the customer installed card, typically through a1 x 10p jack; the other 1 LAN network interface signal is connected to a rectangular connector, typically via a WTB bus of 1 x 10, 1.25 mm.
In addition, the power signal transferred from the IO1 circuit board is also connected to the 1 x 10p receptacle where the customer installed card is located. Be provided with 4 WTB buses of 2P, 1.25 millimeter on the IO4 circuit board for connect 3 way serial ports signal, SPI signal, network signal's pilot lamp such as LED, still be provided with 1 WTB buses of 4P, 1.25 millimeter on the IO4 circuit board, be used for connecting the specification and be 5V, 2A's power signal.
In particular, the rectangular connector of the IO4 circuit board output may be a 37P J24H-37ZKH type rectangular connector.
The multifunctional extension circuit provided by the embodiment can conveniently and rapidly realize the extension of customized functions such as serial ports, SPI buses, network interfaces and the like in the CD-ROM bit of a computer.
The multifunctional computer expansion circuit provided by the invention can realize expansion of customized functions such as serial ports, hard disks and the like in an optical drive position of a portable computer, and the IO1 circuit board is connected to a plurality of replaceable expansion function circuits through the FPC, so that the overall manufacturing cost of the multifunctional expansion circuit is reduced, and the functional requirements of users on diversification and customization of the portable computer can be met.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (10)
1. A computer multifunction expansion circuit comprising:
The signal input interface is used for inputting signals of the computer main board into the multifunctional expansion circuit;
a switching circuit for switching signals input into the multifunctional extension circuit to an inter-board interconnection interface;
the expansion circuit is used for converting and expanding signals transmitted from the inter-board interconnection interface;
the signal output interface is used for outputting the signal converted and expanded by the expansion circuit;
The multifunctional expansion circuit is a multifunctional expansion module applied to an optical drive of a portable computer, the switching circuit is connected with the expansion circuit through an FPC in an interconnection interface between boards, and the switching circuit can be connected with the expansion circuit with various expansion functions.
2. The multi-function expansion circuit of claim 1, wherein the signal input interface is a high-speed connector coupled to a motherboard of the computer.
3. The computer multifunction extension circuit of claim 1, wherein the signal input to the multifunction extension circuit comprises a serial port, PCIE, SATA, USB, and/or a power signal.
4. The computer multifunction expansion circuit of claim 3, wherein the expansion circuit directly switches the serial port and/or SATA signals; and/or converting the PCIE signal into a serial port or network interface signal through a chip; and/or converting the USB signal into a serial port or SPI interface signal through a chip.
5. The multi-functional expansion circuit of claim 4, wherein the serial port signals directly transferred by the expansion circuit and the serial port signals converted by the PCIE signals through the chip are mutually convertible.
6. The multi-functional expansion circuit of claim 4, wherein the serial port signals directly converted by the expansion circuit, the serial port signals converted by the PCIE signals through the chip, and the serial port signals converted by the USB signals through the chip are RS232, RS422, or RS485 interface signals.
7. The multi-function expansion circuit of claim 4, wherein the PCIE signal is converted into a serial signal by a PCIE to UART chip, and the number of serial ports is controlled by modifying a driver of the PCIE to UART chip.
8. The multi-function expansion circuit of claim 4, wherein the PCIE signals are converted by a chip into at least two network interface signals, wherein at least one of the network interface signals is output to the signal output interface, and at least one other network is connected to a customer installed card.
9. The multifunctional extension circuit of claim 4, wherein the USB signal is extended to at least two USB signals by a USB extension chip, at least one of the at least two USB signals is converted to a serial port signal by a USB-to-UART chip, and at least another one of the at least two USB signals is converted to an SPI interface signal by a USB-to-SPI chip.
10. The computer multifunction extension circuit according to claim 1, wherein the extension circuit is connected to a rectangular connector as the signal output interface through a WBT bus.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711181406.4A CN109828937B (en) | 2017-11-23 | 2017-11-23 | Multifunctional extension circuit of computer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711181406.4A CN109828937B (en) | 2017-11-23 | 2017-11-23 | Multifunctional extension circuit of computer |
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| CN109828937A CN109828937A (en) | 2019-05-31 |
| CN109828937B true CN109828937B (en) | 2024-05-17 |
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| CN201711181406.4A Active CN109828937B (en) | 2017-11-23 | 2017-11-23 | Multifunctional extension circuit of computer |
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| CN110618949A (en) * | 2019-09-02 | 2019-12-27 | 天津市英贝特航天科技有限公司 | KVM function card based on LPC bus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2370681A1 (en) * | 1995-03-07 | 1996-09-12 | Mobility Electronics, Inc. | System and method for expansion of a computer |
| CN203386121U (en) * | 2013-07-24 | 2014-01-08 | 梁枫 | Extensible main board |
| CN207601786U (en) * | 2017-11-23 | 2018-07-10 | 研祥智能科技股份有限公司 | A kind of computer multi-functional expanded circuit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI325290B (en) * | 2006-03-17 | 2010-05-21 | Mitac Int Corp | Motherboard equipped with a hypertransport interface |
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2017
- 2017-11-23 CN CN201711181406.4A patent/CN109828937B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2370681A1 (en) * | 1995-03-07 | 1996-09-12 | Mobility Electronics, Inc. | System and method for expansion of a computer |
| CN203386121U (en) * | 2013-07-24 | 2014-01-08 | 梁枫 | Extensible main board |
| CN207601786U (en) * | 2017-11-23 | 2018-07-10 | 研祥智能科技股份有限公司 | A kind of computer multi-functional expanded circuit |
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