CN211044238U - Computer CD-ROM switching circuit for DVD - Google Patents
Computer CD-ROM switching circuit for DVD Download PDFInfo
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- CN211044238U CN211044238U CN202020124982.6U CN202020124982U CN211044238U CN 211044238 U CN211044238 U CN 211044238U CN 202020124982 U CN202020124982 U CN 202020124982U CN 211044238 U CN211044238 U CN 211044238U
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- usb interface
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Abstract
The utility model provides a computer CD-ROM switching circuit for DVD, which comprises a USB converter, wherein the USB converter is respectively connected with a USB interface of a computer, a CPU processor of the computer and a CD-ROM, the CPU processor of the computer is connected with an external device, and the CD-ROM comprises a USB interface; the USB converter comprises a USB conversion chip, and the USB conversion chip is respectively connected with the CD-ROM and the USB interface of the computer. Adopt the technical scheme of the utility model, the CD-ROM drive that can directly adopt the computer watches the DVD at external equipment, does not need other DVD video disc player, and it is more convenient to use, converter simple structure moreover, easy to maintain.
Description
Technical Field
The utility model belongs to the technical field of the circuit, especially, relate to a computer CD-ROM switching circuit for DVD.
Background
With the popularization of computers, the purchase amount of DVD machines is less and less at present. If a user wants to watch the DVD, the user needs to open related software on a computer, read data through a CD driver and watch the data on a display screen; or the computer host is connected with the VGA and HDMI interfaces of the external equipment, and the computer host is viewed on the external equipment after being analyzed by software of the computer host, which brings inconvenience to users.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the utility model discloses a computer CD-ROM converting circuit for DVD directly changes the CD-ROM that just can pass through the computer through the USB, watches DVD at external equipment, and it is more convenient to use.
To this end, the technical scheme of the utility model is that:
a computer CD-ROM switching circuit for DVD comprises a USB converter, wherein the USB converter is respectively connected with a USB interface of a computer, a CPU processor of the computer and a CD-ROM, the CPU processor of the computer is connected with an external device, and the CD-ROM comprises a USB interface;
the USB converter comprises a USB conversion chip, and the USB conversion chip is respectively connected with the CD-ROM and the USB interface of the computer.
Specifically, the USB conversion chip includes a DN1 pin, a DP1 pin, a DN2 pin, a DP2 pin, an OEB pin, a GND pin, a DN pin, an SE1 pin, and a VCC pin, the DN1 pin is connected to a DM end of a USB interface of the optical drive, the DP1 pin is connected to a DP end of the USB interface of the optical drive, the DN2 pin is connected to a DM end of a USB interface of the computer, the DP2 pin is connected to a DP end of a USB interface of the computer, the VCC pin is connected to a VCC end of the USB interface of the computer, the VCC pin is grounded through a capacitor C286, the SE1 pin is grounded through a resistor R226, the SE1 pin is connected to a resistor R276 through a triode Q20, and the resistor R276 is connected to an EN end of the USB interface of the computer; and the GND pin and the OEB pin are grounded. Furthermore, the USB converter is connected with a CPU processor of the computer through another USB interface of the computer.
As a further improvement of the present invention, the USB converter includes a first USB interface connected to a USB interface of a computer, a second USB interface connected to an optical drive, and a third USB interface, and the SE1 pin is connected to an EN end of the third USB interface through a resistor R277; the SE1 pin is also connected with a VCC end of a third USB interface through a resistor; the DN pin is connected with a DM end of a third USB interface; and the DP pin is connected with a DP end of the third USB interface.
As a further improvement of the present invention, the USB conversion chip has a model B L1532.
As a further improvement of the present invention, the USB converter includes a power supply, the power supply is connected to the VCC pin of the USB conversion chip.
Compared with the prior art, the beneficial effects of the utility model are that:
adopt the technical scheme of the utility model, the CD-ROM drive that can directly adopt the computer watches the DVD at external equipment, does not need other DVD video disc player, and it is more convenient to use, converter simple structure moreover, easy to maintain.
Drawings
Fig. 1 is a schematic diagram of a computer optical disc drive conversion circuit for DVD according to the present invention.
Fig. 2 is a schematic circuit diagram of a USB converter of a computer cd conversion circuit for DVD according to the present invention.
Fig. 3 is a circuit diagram of a CPU of a computer optical drive conversion circuit for DVD according to the present invention.
Fig. 4 is a circuit diagram of a power module of a computer optical drive switching circuit for a DVD according to the present invention.
Fig. 5 is a circuit diagram of the video output terminal of the computer cd-rom switching circuit for DVD according to the present invention.
Detailed Description
Preferred embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, a computer optical drive conversion circuit for a DVD includes a USB converter, the USB converter is respectively connected to a USB interface of a computer, a CPU processor of the computer, and an optical drive, the CPU processor of the computer is connected to an external device, and the optical drive includes a USB interface.
As shown in fig. 2, the USB converter includes a USB conversion chip, the USB conversion chip includes a DN1 pin, a DP1 pin, a DN2 pin, a DP2 pin, an OEB pin, a GND pin, a DN pin, an SE1 pin, and a VCC pin, the DN1 pin is connected to a DM terminal of a USB interface of the optical drive, the DP1 pin is connected to a DP terminal of a USB interface of the optical drive, the DN2 pin is connected to a DM terminal of a USB interface of the computer, the DP2 pin is connected to a DP terminal of a USB interface of the computer, the VCC pin is connected to a VCC terminal of a USB interface of the computer, the VCC pin is grounded through a capacitor C286, the SE1 pin is grounded through a resistor R226, the SE1 pin is connected to a resistor R276 through a triode Q20, and the resistor R276 is connected to an EN terminal of a USB interface of the computer; and the GND pin and the OEB pin are grounded.
The USB converter comprises a first USB interface connected with a USB interface of a computer, a second USB interface connected with an optical drive and a third USB interface, wherein a SE1 pin is connected with an EN end of the third USB interface through a resistor R277, a SE1 pin is also connected with a VCC end of the third USB interface through a resistor, a DN pin is connected with a DM end of the third USB interface, a DP pin is connected with a DP end of the third USB interface, and the type of the USB conversion chip is B631532.
The circuit diagram of the synthesized video frequency output after being processed by the CPU processor of the computer is shown in fig. 3. The USB converter comprises a power supply, and the power supply is connected with a VCC pin of the USB conversion chip. The circuit diagram of the power supply is shown in fig. 4, and the circuit diagram of the video output terminal is shown in fig. 5.
By adopting the technical scheme of the embodiment, when the video interface of the computer is not connected with the equipment, the USB is switched to the PC port, and the USB interface on the USB converter becomes a USB CD driver for the computer to use. When the video interface of the computer has access equipment, the USB is switched to the CPU for communication, the content read by the SATA is often coded into a USB form (by adopting software attached to a chip), the CPU reads the content of the USB, the CPU is switched to the USB servo control at the moment, and the read content is often decoded and coded into video and audio to be output to external equipment for use. When a U disk or an SD card is inserted into the USB converter, video and audio files can be decoded for playing. Originally, the CD-ROM is used on a computer and becomes a DVD function through the connection of the USB switching chip and the CD-ROM.
The above-mentioned embodiments are the preferred embodiments of the present invention, and the scope of the present invention is not limited to the above-mentioned embodiments, and the scope of the present invention includes and is not limited to the above-mentioned embodiments, and all equivalent changes made according to the shape and structure of the present invention are within the protection scope of the present invention.
Claims (4)
1. A computer CD driver switching circuit for DVD is characterized in that: the USB converter is respectively connected with a USB interface of a computer, a CPU processor of the computer and an optical drive, the CPU processor of the computer is connected with external equipment, and the optical drive comprises the USB interface;
the USB converter comprises a USB conversion chip, wherein the USB conversion chip comprises a DN1 pin, a DP1 pin, a DN2 pin, a DP2 pin, an OEB pin, a GND pin, a DN pin, an SE1 pin and a VCC pin, the DN1 pin is connected with a DM end of a USB interface of the optical drive, the DP1 pin is connected with a DP end of the USB interface of the optical drive, the DN2 pin is connected with a DM end of the USB interface of the computer, the DP2 pin is connected with a DP end of the USB interface of the computer, the VCC pin is connected with a VCC end of the USB interface of the computer, the VCC pin is grounded through a capacitor C286, the SE1 pin is grounded through a resistor R226, the SE1 pin is connected with a resistor R276 through a triode Q20, and the resistor R276 is connected with an EN end of the USB interface of the computer; and the GND pin and the OEB pin are grounded.
2. The computer-to-optical driver conversion circuit for a DVD of claim 1, wherein: the USB converter comprises a first USB interface connected with a USB interface of a computer, a second USB interface connected with an optical drive and a third USB interface, and the SE1 pin is connected with the EN end of the third USB interface through a resistor R277; the SE1 pin is also connected with a VCC end of a third USB interface through a resistor; the DN pin is connected with a DM end of a third USB interface; and a DP pin of the USB conversion chip is connected with a DP end of the third USB interface.
3. The computer CD-ROM switching circuit for DVD as defined in claim 1, wherein the USB switching chip has a model number of B L1532.
4. The computer CD-ROM switching circuit for DVD according to any of claims 1-3, wherein: the USB converter comprises a power supply, and the power supply is connected with a VCC pin of the USB conversion chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020124982.6U CN211044238U (en) | 2020-01-19 | 2020-01-19 | Computer CD-ROM switching circuit for DVD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020124982.6U CN211044238U (en) | 2020-01-19 | 2020-01-19 | Computer CD-ROM switching circuit for DVD |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211044238U true CN211044238U (en) | 2020-07-17 |
Family
ID=71532065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020124982.6U Active CN211044238U (en) | 2020-01-19 | 2020-01-19 | Computer CD-ROM switching circuit for DVD |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211044238U (en) |
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2020
- 2020-01-19 CN CN202020124982.6U patent/CN211044238U/en active Active
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