SATA (Serial Advanced Technology Attachment) signal multipath mode access method and system

Abstract

The invention belongs to the technical field of video monitoring servers, and particularly relates to an SATA (Serial Advanced Technology Attachment) signal multipath mode access method and system, which comprises an access mode I and an access mode II, the access mode I accesses an SATA signal through a CPU (Central Processing Unit) end, the access mode II accesses the SATA signal through a USB (Universal Serial Bus) end and judges the source of an access end, and the access mode II accesses the SATA signal through the USB end. And the two-way SATA signal automatic switching circuit is used for switching to a corresponding access end to access the storage hard disk. According to the invention, under the condition that the equipment is not powered on, the data of the storage hard disk can be directly accessed through the USB interface, the storage hard disk does not need to be disassembled, intervention or switching action does not need to be performed, and the access to the data is more diversified and convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of video surveillance servers, and particularly to an automatic switching method and system for accessing based on a multi-channel SATA signal mode. Background Art

[0002] With the rapid development of the video surveillance server industry, the application and access methods of video surveillance data tend to be diversified. The data storage hard disk of a video surveillance server is usually fixed inside the chassis. The traditional data access method of a video surveillance server usually uses a computer to access the storage hard disk of the video surveillance server through FTP via Ethernet, as Figure 1 shown. Data copying and access can only be achieved through network download and access, with slower download and access speeds, and requires certain professional capabilities of the operator. Since the data storage hard disks equipped in video surveillance servers are usually large-capacity T-level storage hard disks, the traditional network download method is time-consuming and laborious. Especially in some special fields, such as train video surveillance servers, after the train enters the section, it is necessary to copy the video data to the ground and continue to run on the road after maintenance. The time for data copying is tight, and there is an urgent need for a faster and more convenient data copying and access method. Summary of the Invention

[0003] The purpose of the present invention is to provide a method and system for accessing in a multi-channel SATA signal mode. Without changing the traditional access method, a way to access the storage hard disk through USB is added in the bypass of the data access process. This method, without affecting the original storage function and network download of the video surveillance server, uses a faster USB port to copy and access video data, providing another faster and more convenient data copying and access method.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a multi-channel SATA signal access method, including access mode one and access mode two. The access mode one accesses the SATA signal through the CPU end, and the access mode two accesses the SATA signal through the USB end. The access source is judged, and the dual-channel SATA signal automatic switching circuit is used to switch to the corresponding access end to access the storage hard disk.

[0005] Specifically, the basis for judging the access source is whether the CPU end power supply exists. The power supply conversion circuit is connected to the CPU end power supply, converts the CPU end power supply into a switching direction judgment signal, and sends it to the dual-channel SATA signal automatic switching circuit, including three situations,

[0006] (1) When the power supply conversion circuit is electrically connected to the CPU end and not electrically connected to the USB end, the CPU end power supply exists. At this time, there is voltage in the switching direction judgment signal, and it is judged that the access source is the CPU end access;

[0007] (2) When the power supply conversion circuit is electrically connected to the USB terminal and not electrically connected to the CPU terminal, the CPU terminal power supply does not exist. At this time, there is no voltage in the switching direction judgment signal, so it is judged that the access source is the USB terminal access;

[0008] (3) When the power supply conversion circuit is electrically connected to the CPU terminal and also electrically connected to the USB terminal, the CPU terminal power supply exists. The power supply conversion circuit will also convert the CPU terminal power supply into a switching direction judgment signal. At this time, there is voltage in the switching direction judgment signal, so it is judged that the access source is still the CPU terminal access.

[0009] Specifically, the method for detecting whether the CPU terminal power supply exists is that the voltage conversion chip U1 in the power supply conversion circuit is connected to the CPU terminal. The voltage conversion chip U1 converts the voltage into a switching direction judgment signal and outputs it to the dual-channel SATA signal automatic switching circuit. When the dual-channel SATA signal automatic switching circuit receives the switching direction judgment signal, it is judged that the CPU terminal power supply exists; if there is no switching direction judgment signal, it is judged that the CPU terminal power supply does not exist.

[0010] Specifically, the method for the dual-channel SATA signal automatic switching circuit to switch to the corresponding access terminal is that when it is judged that the CPU terminal power supply exists, the triode Q3 in the dual-channel SATA signal automatic switching circuit places the SEL pin of the multiplexer chip U5 at a high level. At this time, the Cn channel and the An channel of the multiplexer chip U5 are conducted, connecting the CPU terminal SATA signal to the storage hard disk. When it is judged that the CPU terminal power supply does not exist, the triode Q3 in the dual-channel SATA signal automatic switching circuit places the SEL pin of the multiplexer chip U5 at a low level. At this time, the Bn channel and the An channel of the multiplexer chip U5 are conducted, connecting the USB terminal SATA signal to the storage hard disk.

[0011] A SATA signal multi-way access system includes a power supply conversion circuit, a dual-power switching circuit, a dual-channel SATA signal automatic switching circuit, and a USB to SATA signal circuit. Among them,

[0012] The power supply conversion circuit includes a voltage conversion chip U1 and a voltage conversion chip U2. The voltage conversion chip U1 converts the CPU terminal voltage into a low-voltage power supply. After being switched and fused by the dual-power switching circuit, it is supplied to the voltage conversion chip U2, the USB to SATA signal circuit, and the storage hard disk for use. The voltage conversion chip U2 converts the power supply fused by the dual-power switching circuit and supplies it to the dual-channel SATA signal automatic switching circuit;

[0013] The dual-power switching circuit is used to fuse the two-way power supplies of the CPU terminal and the USB terminal into one-way power supply for use by the voltage conversion chip U2, the USB to SATA signal circuit, and the storage hard disk;

[0014] The dual-channel SATA signal automatic switching circuit includes an automatic control signal switching direction circuit and a SATA signal switching circuit. The automatic control signal switching direction circuit uses the voltage signal at the CPU end as the switching direction judgment signal to control the SATA signal switching circuit to switch the signal source end. The SATA signal switching circuit is used to complete the switching of two-channel SATA signals into one-channel SATA signal and connect it to the storage hard disk;

[0015] The USB-to-SATA signal circuit is used to convert the USB signal at the USB end into a SATA signal. The USB end is connected to the storage hard disk through the USB-to-SATA signal circuit and the dual-channel SATA signal automatic switching circuit.

[0016] Specifically, the power supply terminal 1 of the dual-channel power supply switching circuit is electrically connected to the power output terminal 1 of the power supply conversion circuit, and the power supply terminal 2 of the dual-channel power supply switching circuit is electrically connected to the power output terminal of the USB end. The power output terminals of the dual-channel power supply switching circuit are respectively electrically connected to the power supply terminal of the USB-to-SATA signal circuit and the power supply terminal of the power supply conversion circuit. The power output terminal of the USB-to-SATA signal circuit is electrically connected to the power supply terminal of the storage hard disk. The power supply terminal 1 of the power supply conversion circuit is electrically connected to the power supply of the CPU end, and the power supply terminal 2 of the power supply conversion circuit is electrically connected to the power output terminal of the dual-channel power supply switching circuit. The power output terminal 2 of the power supply conversion circuit is electrically connected to the power supply terminal of the dual-channel SATA signal automatic switching circuit. The CPU end and the power supply conversion circuit are respectively connected to the dual-channel SATA signal switching circuit through signal lines. The USB end is connected to the dual-channel SATA signal automatic switching circuit through the USB-to-SATA signal circuit by signal lines. The dual-channel SATA signal automatic switching circuit is connected to the storage hard disk through signal lines.

[0017] Specifically, the dual-channel power supply switching circuit includes a power rail controller U3, a field effect transistor Q1, a power rail controller U4, and a field effect transistor Q2.

[0018] Specifically, the power supply conversion circuit includes a voltage conversion chip U1 and a voltage conversion chip U2. The power supply terminal of the voltage conversion chip U1 is electrically connected to the power supply terminal of the CPU end, and the power output terminal is connected to a power supply terminal of the dual-channel power supply switching circuit. The voltage conversion chip U1 is connected to the dual-channel SATA signal automatic switching circuit through signal lines. The power supply terminal of the voltage conversion chip U2 is electrically connected to the power output terminal of the dual-channel power supply switching circuit, and the power output terminal of the voltage conversion chip U2 is electrically connected to the dual-channel SATA signal automatic switching circuit.

[0019] Specifically, the dual-channel SATA signal automatic switching circuit includes an automatic control signal switching direction circuit and a SATA signal switching circuit. The automatic control signal switching direction circuit includes a triode Q3, and the SATA signal switching circuit includes a multiplexer chip U5 and a peripheral circuit. The triode Q3 is connected to the power supply conversion circuit through a signal line.

[0020] Specifically, the USB-to-SATA signal conversion includes a bridging chip U6 and a peripheral circuit.

[0021] The present invention has the following beneficial effects: It can achieve direct access to the data of the storage hard disk through the USB interface without powering on the device, without the need to remove the storage hard disk, and without intervention or switching operations, making the access to data more diverse and convenient. Description of the Drawings

[0022] Figure 1 It is a system architecture diagram of the prior art.

[0023] Figure 2 It is a system architecture diagram of the present invention.

[0024] Figure 3 It is a flowchart of the present invention.

[0025] Figure 4 It is a power supply conversion circuit of the present invention.

[0026] Figure 5 It is a dual-channel power supply switching circuit of the present invention.

[0027] Figure 6 It is a dual-channel SATA signal automatic switching circuit of the present invention.

[0028] Figure 7 It is a USB-to-SATA signal conversion circuit of the present invention. Detailed Embodiments

[0029] Now, the present invention will be further described in detail with reference to the accompanying drawings.

[0030] According to Figure 2 A method for accessing SATA signals in a multi-channel manner as shown, includes access method one and access method two. In access method one, the SATA signal is accessed through the CPU end, and in access method two, the SATA signal is accessed through the USB end. The access end source is judged, and the dual-channel SATA signal automatic switching circuit is used to switch to the corresponding access end to access the storage hard disk.

[0031] Specifically, the basis for judging the access end source is the existence of the CPU end power supply. The power supply conversion circuit 2 is connected to the CPU end power supply, converts the CPU end power supply into a switching direction judgment signal, and sends it to the dual-channel SATA signal automatic switching circuit, including the following three situations:

[0032] (1) When the power supply conversion circuit is electrically connected to the CPU end and not electrically connected to the USB end, the CPU end power supply exists. At this time, the switching direction judgment signal has voltage, so it is judged that the access source is CPU end access;

[0033] (2) When the power supply conversion circuit is electrically connected to the USB end and not electrically connected to the CPU end, the CPU end power supply does not exist. At this time, the switching direction judgment signal has no voltage, so it is judged that the access source is USB end access;

[0034] (3) When the power supply conversion circuit is electrically connected to the CPU end and also electrically connected to the USB end, the CPU end power supply exists. The power supply conversion circuit will also convert the CPU end power supply into a switching direction judgment signal. At this time, the switching direction judgment signal has voltage, so it is judged that the access source is still CPU end access.

[0035] Specifically, the method for detecting whether the CPU end power supply exists is that the voltage conversion chip U1 in the power supply conversion circuit 2 is connected to the CPU end. The voltage conversion chip U1 converts the voltage into a switching direction judgment signal and outputs it to the dual-channel SATA signal automatic switching circuit. When the dual-channel SATA signal automatic switching circuit 3 receives the switching direction judgment signal, it is judged that the CPU end power supply exists. If there is no switching direction judgment signal, it is judged that the CPU end power supply does not exist.

[0036] Specifically, the method for the dual-channel SATA signal automatic switching circuit 3 to switch to the corresponding access end is that when it is judged that the CPU end power supply exists, the triode Q3 in the dual-channel SATA signal automatic switching circuit 3 places the SEL pin of the multiplexer chip U5 at a high level. At this time, the Cn channel and the An channel of the multiplexer chip U5 are conducted, connecting the CPU end SATA signal to the storage hard disk. When it is judged that the CPU end power supply does not exist, the triode Q3 in the dual-channel SATA signal automatic switching circuit 3 places the SEL pin of the multiplexer chip U5 at a low level. At this time, the Bn channel and the An channel of the multiplexer chip U5 are conducted, connecting the USB end SATA signal to the storage hard disk.

[0037] As Figures 3 to 7 shown in a SATA signal multi-way access system, including a power supply conversion circuit 2, a dual-power switching circuit 1, a dual-channel SATA signal automatic switching circuit 3, and a USB to SATA signal circuit 4, where,

[0038] The USB end uses a USB3.0 end;

[0039] The power supply conversion circuit 2 is used to convert the power supply into a low-voltage power supply and supply power to the dual-power supply switching circuit 1 and the dual-channel SATA signal automatic switching circuit 3 respectively;

[0040] The dual-power supply switching circuit 1 is used to integrate the two-way power supplies from the CPU end and the USB end into one-way power supply. After the dual-power supply switching circuit 3 integrates the power supplies from the CPU end and the USB end, it provides the required power to the power supply conversion circuit 2, the dual-channel SATA signal automatic switching circuit 3, the USB3 to SATA signal conversion circuit 4, and the storage hard disk 5;

[0041] The dual-channel SATA signal automatic switching circuit 3 includes an automatic control signal switching direction circuit and a SATA signal switching circuit. The automatic control signal switching direction circuit uses the voltage signal at the CPU end as the switching direction judgment signal to control the SATA signal switching circuit to switch the signal source end, achieving the purpose of automatically controlling the signal switching direction and solving the problem of manually switching the signal direction. The SATA signal switching circuit is used to complete the switching of two-way SATA signals into one-way SATA signal and connect to the storage hard disk 5;

[0042] The USB to SATA signal conversion circuit 4 is used to convert the USB signal into a SATA signal. Through the USB to SATA signal conversion circuit 4, in user mode two, users can directly access the data in the hard disk using the USB interface of devices such as computers;

[0043] One power supply terminal of the dual-power supply switching circuit 1 is electrically connected to the first power supply output terminal of the power supply conversion circuit 2, and the second power supply terminal of the dual-power supply switching circuit 1 is electrically connected to the power supply output terminal of the USB end. The power supply output terminals of the dual-power supply switching circuit 1 are respectively electrically connected to the power supply terminal of the USB to SATA signal conversion circuit and the power supply terminal of the power supply conversion circuit 2. The power supply output terminal of the USB to SATA signal conversion circuit 4 is electrically connected to the power supply terminal of the storage hard disk 5. The first power supply terminal of the power supply conversion circuit 2 is electrically connected to the power supply of the CPU end, and the second power supply terminal of the power supply conversion circuit 2 is electrically connected to the power supply output terminal of the dual-power supply switching circuit 1. The second power supply output terminal of the power supply conversion circuit 2 is electrically connected to the power supply terminal of the dual-channel SATA signal automatic switching circuit 3. The CPU end and the power supply conversion circuit 2 are respectively connected to the dual-channel SATA signal switching circuit 3 through signal lines. The USB end is connected to the dual-channel SATA signal automatic switching circuit 3 through the USB to SATA signal conversion circuit 4 through signal lines. The dual-channel SATA signal automatic switching circuit 3 is connected to the storage hard disk 5 through signal lines.

[0044] Specifically, the dual - path power supply switching circuit 1 is used to fuse the power supply terminal VCC5V_1 of the USB side and the power supply terminal VCC5V_2 of the CPU side into a single - path power supply output terminal VCC5V, providing operating power for the subsequent circuit and achieving the function of isolating the power supplies of the USB side and the CPU side. The dual - path power supply switching circuit includes a power rail controller U3, a field - effect transistor Q1, a power rail controller U4, and a field - effect transistor Q2. As Figure 5 shown, the models of the power rail controllers U3 and U4 are TPS2412PWR, and the models of the field - effect transistors Q1 and Q2 are N - channel field - effect transistors of SI7336ADP - T1 - E3. The power supply terminals of the power rail controllers U3 and Q1 are connected to the power supply terminal VCC5V_2 of the CPU side. Through the power rail controller U3 and the field - effect transistor Q1, it is used to fuse the USB - side power supply to the power supply output terminal VCC5V of the dual - path power supply switching circuit. The power rail controller U4 and the field - effect transistor Q2 are used to fuse the CPU - side power supply to the output terminal VCC5V of the dual - path power supply switching circuit. When the power supplies of the USB side and the CPU side exist simultaneously, the power rail controller U3 and the power rail controller U4 determine the source of the fused power supply according to the voltage levels of the USB side and the CPU side, automatically isolating the power supply of the other end.

[0045] Specifically, the power supply conversion circuit is used for power voltage transformation to provide a suitable power supply for the subsequent circuit. The power supply conversion circuit includes a voltage conversion chip U1 and a voltage conversion chip U2. The power supply terminal of the voltage conversion chip U1 is electrically connected to the power supply terminal VCC12V of the CPU side, and the power supply output terminal is connected to a power supply terminal of the dual - path power supply switching circuit. The voltage conversion chip U1 converts the CPU - side voltage to VCC5V. After being switched by the dual - path power supply switching circuit 2, it is supplied to the voltage conversion chip U2, the USB - to - SATA signal conversion circuit 4, and the storage hard disk 5 for use. The voltage conversion chip U1 is connected to the dual - path SATA signal automatic switching circuit 3 through a signal line. The voltage conversion chip U1 generates a voltage signal for the dual - path SATA signal automatic switching circuit 3 as a switching direction judgment signal. The power supply terminal of the voltage conversion chip U2 is electrically connected to the power supply output terminal VCC5V of the dual - path power supply switching circuit, and the power supply output terminal of the voltage conversion chip U2 is connected to the dual - path SATA signal automatic switching circuit. The voltage conversion chip U2 converts the fused power supply of the dual - path power supply switching circuit to 3.3V for use by the dual - path SATA signal automatic switching circuit 3. As Figure 4As shown, the 12V VCC comes from the power supply terminal of the CPU. The voltage conversion chip U1 uses a voltage conversion chip of model MP2315SGJ, which is used to convert this 12V power supply into a 5V power supply to provide 5V power supply for the voltage conversion chip U2, the USB to SATA signal circuit 4, and the storage hard disk 5. When the CPU terminal is not in use, the voltage conversion chip U1 is in an inoperative state. At this time, there is no voltage at the power output terminal VCC5V5 of the voltage conversion chip U1. The voltage conversion chip U2 uses a voltage conversion chip of model MP2315SGJ, which is used to convert the VCC5V voltage at the output terminal integrated by the pre-stage dual-channel power supply switching circuit 1 into a VCC3V3 voltage to provide a working power supply for the chip of the dual-channel SATA signal switching circuit 3. The voltage conversion chip U2 is in an operative state when either the CPU terminal or the USB terminal is in use.

[0046] Specifically, the dual-channel SATA signal automatic switching circuit 3 includes an automatic control signal switching direction circuit and a SATA signal switching circuit. The automatic control signal switching direction circuit includes a triode Q3, and the SATA signal switching circuit includes a multiplexer chip U5 and a peripheral circuit. The model of the triode Q3 is S9014LT1. The triode Q3 is connected to the power supply conversion circuit through a signal line. The triode Q3 controls the switching direction of the SATA signal switching circuit according to the voltage signal output by the voltage conversion chip U1 in the power supply conversion circuit. The multiplexer chip U5 uses a CBTL02043A high-speed dual-channel differential signal switching chip. When the voltage signal output by the voltage conversion chip U1 exists, it indicates that the CPU terminal is powered. The triode Q3 places the SEL pin of the multiplexer chip U5 at a high level. At this time, the Cn channel and the An channel of the multiplexer chip U5 are conducted, connecting the SATA signal of the CPU terminal to the storage hard disk. Since the VCC5V5 power supply comes from the CPU terminal, when the CPU terminal is powered, the SATA signal is automatically switched to the CPU terminal, and the storage hard disk is connected to the CPU terminal. When the voltage signal output by the voltage conversion chip U1 does not exist, it indicates that the CPU terminal is not powered. The triode Q3 places the SEL pin of the multiplexer chip U5 at a low level. At this time, the Bn channel and the An channel of the multiplexer chip U5 are conducted, connecting the SATA signal of the USB terminal to the storage hard disk.

[0047] Specifically, the USB to SATA signal circuit 4 is used to convert the USB signal into a SATA signal so as to be connected to the storage hard disk 5. The USB to SATA signal conversion circuit includes a bridging chip U6 and a peripheral circuit. The bridging chip U6 is a USB to SATA bridging chip of model ASM1153E. The peripheral circuit includes a firmware storage circuit and a storage hard disk power control circuit. Among them, the firmware storage circuit uses a FLASH chip U9, and the model of the FLASH chip U9 is MX25L512EMI-10G. The power control circuit of the storage hard disk 5 uses a P-channel MOSFET Q4 of model AP4435GM.

[0048] The present invention is not limited to the described embodiments. Anyone should know that structural changes made under the inspiration of the present invention, as long as they have the same or similar technical solutions as the present invention, all fall within the protection scope of the present invention.

[0049] The technologies, shapes, and structures not detailedly described in the present invention are all well-known technologies.

Claims

1. A method for accessing SATA signals in a multi-way manner, characterized in that: It includes access method 1 and access method 2. In access method 1, the SATA signal is accessed through the CPU side, and in access method 2, the SATA signal is accessed through the USB side. The access source is judged, and the dual-channel SATA signal automatic switching circuit is used to switch to the corresponding access side to access the storage hard disk.

2. The method for accessing a SATA signal in a multi-way manner according to the claim is characterized in that: The basis for judging the access source is whether the CPU-side power supply exists. The power supply conversion circuit is connected to the CPU-side power supply and converts the CPU-side power supply into a switching direction judgment signal, which is sent to the dual-channel SATA signal automatic switching circuit. There are three situations, (1) When the power supply conversion circuit is electrically connected to the CPU side and not to the USB side, the CPU-side power supply exists. At this time, the switching direction judgment signal has voltage, so it is judged that the access source is the CPU-side access; (2) When the power supply conversion circuit is electrically connected to the USB side and not to the CPU side, the CPU-side power supply does not exist. At this time, the switching direction judgment signal has no voltage, so it is judged that the access source is the USB-side access; (3) When the power supply conversion circuit is electrically connected to both the CPU side and the USB side, the CPU-side power supply exists. The power supply conversion circuit will also convert the CPU-side power supply into a switching direction judgment signal. At this time, the switching direction judgment signal has voltage, so it is judged that the access source is still the CPU-side access.

3. The method for accessing a SATA signal in a multi-way manner according to the claim, wherein: The detection method for whether the CPU-side power supply exists is as follows: In the power supply conversion circuit, the voltage conversion chip U1 is connected to the CPU side. The voltage conversion chip U1 converts the voltage into a switching direction judgment signal and outputs it to the dual-channel SATA signal automatic switching circuit. If the dual-channel SATA signal automatic switching circuit receives the switching direction judgment signal, it is judged that the CPU-side power supply exists; if there is no switching direction judgment signal, it is judged that the CPU-side power supply does not exist.

4. The method for accessing an SATA signal in a multi-way manner according to the claim is characterized in that: The method for the dual-channel SATA signal automatic switching circuit to switch to the corresponding access side is as follows: When it is judged that the CPU-side power supply exists, the triode Q3 in the dual-channel SATA signal automatic switching circuit places the SEL pin of the multiplexer chip U5 at a high level. At this time, the Cn channel and the An channel of the multiplexer chip U5 are conducted, connecting the CPU-side SATA signal to the storage hard disk. When it is judged that the CPU-side power supply does not exist, the triode Q3 in the dual-channel SATA signal automatic switching circuit places the SEL pin of the multiplexer chip U5 at a low level. At this time, the Bn channel and the An channel of the multiplexer chip U5 are conducted, connecting the USB-side SATA signal to the storage hard disk.

5. A SATA signal multi-way access system, characterized in that: It includes a power supply conversion circuit, a dual-channel power supply switching circuit, a dual-channel SATA signal automatic switching circuit, and a USB to SATA signal circuit. Among them, The power supply conversion circuit includes a voltage conversion chip U1 and a voltage conversion chip U2. The voltage conversion chip U1 converts the CPU-side voltage into a low-voltage power supply. After being switched and fused by the dual-channel power supply switching circuit, it is supplied to the voltage conversion chip U2, the USB to SATA signal circuit, and the storage hard disk for use. The voltage conversion chip U2 converts the power supply fused by the dual-channel power supply switching circuit and supplies it to the dual-channel SATA signal automatic switching circuit; The dual - path power supply switching circuit is used to integrate the two - path power supplies from the CPU side and the USB side into one - path power supply, which is supplied to the voltage conversion chip U2, the USB - to - SATA signal conversion circuit, and the storage hard disk for use; The dual - path SATA signal automatic switching circuit includes an automatic control signal switching direction circuit and a SATA signal switching circuit. The automatic control signal switching direction circuit uses the voltage signal at the CPU side as the switching direction judgment signal to control the signal source end switching of the SATA signal switching circuit. The SATA signal switching circuit is used to switch two - path SATA signals into one - path SATA signal and connect it to the storage hard disk; The USB - to - SATA signal conversion circuit is used to convert the USB signal at the USB side into a SATA signal. The USB side is connected to the storage hard disk through the USB - to - SATA signal conversion circuit and the dual - path SATA signal automatic switching circuit.

6. The SATA signal multi-way access system according to claim 5, wherein: One power supply terminal of the dual - path power supply switching circuit is electrically connected to the first power output terminal of the power supply conversion circuit, and the second power supply terminal of the dual - path power supply switching circuit is electrically connected to the power output terminal of the USB side. The power output terminals of the dual - path power supply switching circuit are respectively electrically connected to the power supply terminal of the USB - to - SATA signal conversion circuit and the power supply terminal of the power supply conversion circuit. The power output terminal of the USB - to - SATA signal conversion circuit is electrically connected to the power supply terminal of the storage hard disk. The first power supply terminal of the power supply conversion circuit is electrically connected to the power supply of the CPU side, and the second power supply terminal of the power supply conversion circuit is electrically connected to the power output terminal of the dual - path power supply switching circuit. The second power output terminal of the power supply conversion circuit is electrically connected to the power supply terminal of the dual - path SATA signal automatic switching circuit. The CPU side and the power supply conversion circuit are respectively connected to the dual - path SATA signal switching circuit through signal lines. The USB side is connected to the dual - path SATA signal automatic switching circuit through the USB - to - SATA signal conversion circuit by signal lines. The dual - path SATA signal automatic switching circuit is connected to the storage hard disk through signal lines.

7. According to the multi - path SATA signal access system described in claim 5, the dual - path power supply switching circuit includes a power rail controller U3, a field - effect transistor Q1, a power rail controller U4, and a field - effect transistor Q2.

8. According to the multi - path SATA signal access system described in claim 5, the power supply terminal of the voltage conversion chip U1 is electrically connected to the power supply terminal of the CPU side, and the power output terminal is connected to one power supply terminal of the dual - path power supply switching circuit. The voltage conversion chip U1 is connected to the dual - path SATA signal automatic switching circuit through a signal line. The power supply terminal of the voltage conversion chip U2 is electrically connected to the power output terminal of the dual - path power supply switching circuit, and the power output terminal of the voltage conversion chip U2 is electrically connected to the dual - path SATA signal automatic switching circuit.

9. A SATA signal multi-way access system according to claim 5, wherein the dual-channel SATA signal automatic switching circuit includes an automatic control signal switching direction circuit and a SATA signal switching circuit. The automatic control signal switching direction circuit includes a triode, and the SATA signal switching circuit includes a multiplexer chip and a peripheral circuit. The triode is connected to the power supply conversion circuit through a signal line.

10. A SATA signal multi-way access system according to claim 5, wherein the USB-to-SATA signal conversion includes a bridge chip and a peripheral circuit.

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