Clock signal receiving component, clock signal transmitting component and clock synchronization system

Abstract

The invention relates to the technical field of electronic equipment, and discloses a clock signal receiving component, a clock signal transmitting component and a clock synchronization system, the clock signal receiving component comprises a light receiving module and a synchronization module; the light receiving module is respectively connected with the clock signal transmitting component and the synchronization module, and a light transmitting module is arranged in the clock signal transmitting component; the optical receiving module is used for receiving the optical signal transmitted by the optical transmitting module, converting the optical signal into an electric signal and transmitting the electric signal to the synchronization module, and the optical signal is generated by the optical transmitting module according to the initial clock signal; and the synchronization module is used for performing clock synchronization according to the electric signal. Compared with an existing mode of transmission in an electric signal mode, the clock signal is transmitted in an optical signal mode, and the synchronization effect can be improved due to the fact that interference is not prone to being introduced into the optical signal.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a clock signal receiving component, a clock signal transmitting component and a clock synchronization system. Background Art

[0002] At present, with the development of technology, the communication between devices is increasing, and high-speed signals are often transmitted. Some devices (such as the left earphone and the right earphone) also need clock synchronization, otherwise it may cause errors in data reception.

[0003] When clock synchronization is currently performed between devices, ordinary cables are generally used to transmit the signals in the form of electrical signals. However, due to the material of the cable, interference is easily introduced, resulting in poor clock synchronization effect. Summary of the invention

[0004] The main purpose of the present application is to provide a clock signal receiving component, a clock signal transmitting component and a clock synchronization system, aiming to solve the technical problem that when clock synchronization is performed between existing devices, ordinary cables are generally used to transmit in the form of electrical signals, and the cable material is prone to introduce noise and other interference, which leads to poor clock synchronization effect.

[0005] To achieve the above object, the present application provides a clock signal receiving component, the clock signal receiving component comprising: an optical receiving module and a synchronization module;

[0006] The optical receiving module is connected to the clock signal transmitting component and the synchronization module respectively, and the clock signal transmitting component is provided with an optical transmitting module;

[0007] The optical receiving module is used to receive the optical signal transmitted by the optical transmitting module, and convert the optical signal into an electrical signal and transmit it to the synchronization module, wherein the optical signal is generated by the optical transmitting module according to the initial clock signal;

[0008] The synchronization module is used to perform clock synchronization according to the electrical signal.

[0009] In one embodiment, the clock signal receiving component further includes: a conversion module;

[0010] The conversion module is connected to the optical receiving module and the synchronization module respectively;

[0011] The conversion module is used to perform analog-to-digital conversion on the electrical signal and transmit the converted electrical signal to the synchronization module, so that the synchronization module performs clock synchronization according to the converted electrical signal.

[0012] In one embodiment, the light receiving module includes: a photodiode;

[0013] The anode of the photodiode is connected to a power source, and the cathode of the photodiode is connected to the conversion module.

[0014] In one embodiment, the conversion module includes: a comparator, a first resistor and a second resistor;

[0015] The first input terminal of the comparator is connected to the cathode of the photodiode, the second input terminal of the comparator is respectively connected to the first end of the first resistor and the first end of the second resistor, the second end of the first resistor is connected to the anode of the photodiode, the second end of the second resistor is grounded, the power supply terminal of the comparator is connected to the power supply, and the output terminal of the comparator is connected to the synchronization module.

[0016] In one embodiment, the synchronization module includes: a phase detector and a voltage-controlled oscillator;

[0017] The phase detector is connected to the optical receiving module and the voltage-controlled oscillator respectively;

[0018] The phase detector is used to compare the electrical signal with the oscillation signal output by the voltage-controlled oscillator, and transmit the generated comparison signal to the voltage-controlled oscillator;

[0019] The voltage-controlled oscillator is used to adjust the frequency of the output oscillation signal according to the comparison signal, and transmit the adjusted oscillation signal to the phase detector until the frequency of the adjusted oscillation signal is consistent with the frequency of the electrical signal.

[0020] In one embodiment, the synchronization module further includes: a loop filter;

[0021] The loop filter is connected to the phase detector and the voltage-controlled oscillator respectively;

[0022] The loop filter is used to filter the comparison signal and transmit the filtered comparison signal to the voltage-controlled oscillator, so that the voltage-controlled oscillator adjusts the frequency of the output oscillation signal according to the filtered comparison signal.

[0023] In one embodiment, the clock signal receiving component further includes: a first processing module, and the synchronization module further includes: a judgment unit;

[0024] The first processing module is connected to the phase detector, the voltage-controlled oscillator and the judgment unit respectively, and the judgment unit is also connected to the phase detector;

[0025] The judging unit is configured to transmit the generated working signal to the first processing module when the signal value of the comparison signal reaches a preset condition;

[0026] The first processing module is used to use the adjusted oscillation signal output by the voltage-controlled oscillator as a synchronous clock signal when receiving the working signal, and to operate based on the synchronous clock signal.

[0027] In addition, to achieve the above-mentioned purpose, the present application also provides a clock signal transmitting component, the clock signal transmitting component comprising: a second processing module and an optical transmitting module;

[0028] The optical transmission module is respectively connected to the second processing module and the clock signal receiving component as described above;

[0029] The optical transmitting module is used to convert the initial clock signal generated by the second processing module into an optical signal, and transmit the optical signal to the optical receiving module of the clock signal receiving component, so that the clock signal receiving component performs clock synchronization according to the optical signal.

[0030] In one embodiment, the light emitting module comprises: a light emitting diode;

[0031] The anode of the light emitting diode is connected to the second processing module, and the cathode of the light emitting diode is connected to the second processing module.

[0032] In addition, to achieve the above object, the present application also provides a clock synchronization system, the clock synchronization system comprising the clock signal receiving component as described above and the clock signal transmitting component as described above;

[0033] The clock signal transmitting component and the clock signal receiving component are connected via an optical fiber.

[0034] The present application provides a clock signal receiving component, a clock signal transmitting component and a clock synchronization system, wherein the clock signal receiving component comprises: an optical receiving module and a synchronization module; the optical receiving module is connected to the clock signal transmitting component and the synchronization module respectively, and the clock signal transmitting component is provided with an optical transmitting module; the optical receiving module is used to receive the optical signal transmitted by the optical transmitting module, and convert the optical signal into an electrical signal and transmit it to the synchronization module, wherein the optical signal is generated by the optical transmitting module according to the initial clock signal; the synchronization module is used to perform clock synchronization according to the electrical signal. Since the present application provides an optical transmitting module in the clock signal transmitting component and an optical receiving module in the clock signal receiving component, in actual use, the optical transmitting module converts the initial clock signal into an optical signal and transmits it to the optical receiving module, and the optical receiving module then converts the optical signal into an electrical signal and transmits it to the synchronization module, and the synchronization module then performs synchronization according to the electrical signal. Compared with the existing transmission in the form of electrical signals, the present application transmits the clock signal in the form of optical signals, and since the optical signal is not easy to introduce interference, the synchronization effect can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0036] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0037] Figure 1 This is a schematic structural diagram of the first embodiment of the clock signal receiving component of the present application;

[0038] Figure 2 This is a circuit diagram of the first embodiment of the clock signal receiving component of the present application;

[0039] Figure 3 This is a schematic structural diagram of a second embodiment of a clock signal receiving component of the present application;

[0040] Figure 4 This is a circuit schematic diagram of the first embodiment of the clock signal transmitting component of the present application.

[0041] Description of Figure Numbers:

[0042] Label name Label name 1 Clock signal receiving unit 2 Clock signal transmitting unit 11 Optical Receiver Module 21 Second processing module 12 Synchronization module 22 Optical transmitter module 121 Phase detector LED1 Photodiode 122 Voltage Controlled Oscillator LED2 Light Emitting Diode 123 Loop Filter N Comparator 124 Judgment unit R1 First resistor 13 Conversion Module R2 Second resistor 14 First processing module

[0043] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0044] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0045] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0046] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0047] In addition, the descriptions of "first", "second", etc. in this application are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0048] It is understandable that with the development of technology, the communication between devices is increasing, and high-speed signals are often transmitted. Some devices (such as the left and right earphones) also need clock synchronization, otherwise data reception may be prone to errors;

[0049] When clock synchronization is currently performed between devices, ordinary cables are generally used to transmit the signals in the form of electrical signals. However, due to the material of the cable, interference is easily introduced, resulting in poor clock synchronization effect.

[0050] In order to solve the above defects, the embodiment of the present application provides a clock signal receiving component. Since the embodiment is provided with an optical transmitting module in the clock signal transmitting component, and an optical receiving module is provided in the clock signal receiving component, in actual use, the optical transmitting module converts the initial clock signal into an optical signal and transmits it to the optical receiving module, and the optical receiving module then converts the optical signal into an electrical signal and transmits it to the synchronization module, and the synchronization module then synchronizes according to the electrical signal. Compared with the existing transmission in the form of electrical signals, the embodiment transmits the clock signal in the form of optical signals, and since optical signals are not easily interfered, the synchronization effect can be improved.

[0051] For ease of understanding, the following combination Figures 1 to 3 The clock signal receiving component provided in the embodiment of the present application is introduced in detail.

[0052] Reference Figure 1 , Figure 1 The structure diagram of the first embodiment of the clock signal receiving component of the present application is provided, and the first embodiment of the clock signal receiving component of the present application is provided, such as Figure 1 As shown, in this embodiment, the clock signal receiving component 1 includes: an optical receiving module 11 and a synchronization module 12;

[0053] The optical receiving module 11 is connected to the clock signal transmitting component 2 and the synchronization module 12 respectively, and the clock signal transmitting component 2 is provided with an optical transmitting module 22;

[0054] The optical receiving module 11 is used to receive the optical signal transmitted by the optical transmitting module 22, and convert the optical signal into an electrical signal and transmit it to the synchronization module 12. The optical signal is generated by the optical transmitting module 22 according to the initial clock signal;

[0055] The synchronization module 12 is used to perform clock synchronization according to the electrical signal.

[0056] It should be noted that the solution provided in this embodiment can be applied to scenarios where clock signal synchronization is required, that is, a scenario where a device transmits its own clock signal to another device for clock signal synchronization, such as the left earphone and the right earphone in the earphone, etc. Of course, it can also be other scenarios where clock signal synchronization is required. This embodiment uses the clock signal synchronization between the left earphone and the right earphone for illustration.

[0057] When the left earphone and the right earphone are synchronized, the earphone that can generate the clock signal can be used as the clock signal transmitting component 2 (such as the right earphone), and the remaining earphone (i.e. the left earphone) can be used as the clock signal receiving component 1, which can receive the clock signal generated by the right earphone to complete the clock signal synchronization. Since the left earphone and the right earphone are generally connected by a common cable, the right earphone needs to transmit the clock signal in the form of an electrical signal through the cable to the left earphone, so that the left earphone completes the clock signal synchronization. Therefore, it is easy to introduce interference, such as electromagnetic interference, and when the transmission distance is long, distortion and other phenomena may also occur, resulting in poor clock synchronization effect.

[0058] And as Figure 1 As shown, the clock signal transmitting component 2 of this embodiment may be provided with an optical transmitting module 22, and the clock signal receiving component 1 may be provided with an optical receiving module 11 and a synchronization module 12;

[0059] The optical transmitting module 22 may be a module for transmitting optical signals, such as a light emitting diode, etc., and the optical receiving module 11 may be a module for receiving optical signals, such as a photodiode, etc., which is not limited in this embodiment. The optical receiving module 11 may be connected to an optical fiber, thereby connecting to the optical transmitting module 22 of the clock signal transmitting component 2 to receive the optical signal.

[0060] The synchronization module 12 may be any module that completes synchronization based on the received clock signal, and may be consistent with the module structure for synchronization in the existing clock signal receiving component 1, or may be inconsistent, and this embodiment does not impose any limitation on this.

[0061] It should be emphasized that, since the clock signal to be transmitted in this embodiment is in the form of an optical signal, in order to smoothly transmit it, the optical transmitting module 22 and the optical receiving module 11 in this embodiment can be connected by an optical fiber. Of course, other materials used to transmit optical signals can also be connected in the form of wires. This embodiment is implemented by optical fiber connection. Optical fiber is a fiber that can transmit light waves and various optical signals. It consists of a highly transparent core material with a large refractive index and a surrounding skin material with a low refractive index. This structure allows the light to be reflected into the optical dense medium at the interface, so that the optical signal is transmitted forward through repeated reflections in the optical fiber core.

[0062] It should also be noted that the above-mentioned initial clock signal may be a clock signal generated by the clock signal transmitting component 2. In actual use, the optical transmitting module 22 may convert the initial clock signal into an optical signal, and transmit it to the optical receiving module 11 in the clock signal receiving component 1 through the optical fiber. The optical receiving module 11 may receive the optical signal transmitted in the optical fiber, and convert the optical signal into an electrical signal and transmit it to the synchronization module 12. The synchronization module 12 may perform clock synchronization based on the electrical signal, so that the clock pulse of the clock signal receiving component 1 is consistent with the clock pulse in the clock signal transmitting component 2, that is, the clock pulse of the left earphone is consistent with the clock pulse of the right earphone.

[0063] Furthermore, in this embodiment, considering that the synchronization module 12 generally needs to be synchronized in the form of a digital signal, refer to Figure 2 , Figure 2 This is a circuit diagram of the first embodiment of the clock signal receiving component of the present application, as shown in FIG. Figure 2 As shown, the clock signal receiving component 1 further includes: a conversion module 13;

[0064] The conversion module 13 is connected to the optical receiving module 11 and the synchronization module 12 respectively;

[0065] The conversion module 13 is used to perform analog-to-digital conversion on the electrical signal and transmit the converted electrical signal to the synchronization module 12, so that the synchronization module 12 performs clock synchronization according to the converted electrical signal.

[0066] It is understandable that, since the electrical signal generated by the optical receiving module 11 is in the form of an analog signal, the conversion module 13 in this embodiment may be a module that performs analog-to-digital conversion, such as a comparator N, etc., and this embodiment does not limit this.

[0067] In a specific implementation, after the optical receiving unit converts the received optical signal into an electrical signal, it can be transmitted to the conversion module 13. The conversion module 13 can then perform analog-to-digital conversion on the electrical signal to obtain the electrical signal in the form of a digital signal as the above-mentioned converted electrical signal, and transmit it to the synchronization module 12. After receiving the converted electrical signal, the synchronization module 12 can perform clock synchronization according to the converted electrical signal.

[0068] Further, continue as Figure 2 As shown, in this embodiment, the light receiving module 11 includes: a photodiode LED1;

[0069] The anode of the photodiode LED1 is connected to a power source, and the cathode of the photodiode LED1 is connected to the conversion module 13 .

[0070] It should be understood that the power supply in this embodiment can be a power supply that satisfies the operation of the photodiode LED1. In actual use, the photodiode LED1 can receive the optical signal transmitted by the optical fiber, and when receiving the optical signal, the anode and cathode of the photodiode LED1 are turned on, and then the power supply (i.e. Figure 2 The electric energy generated by Vref) can be transmitted to the conversion module 13 in the form of the above-mentioned electric signal through the cathode of the photodiode LED1.

[0071] Furthermore, the conversion module 13 includes: a comparator N, a first resistor R1 and a second resistor R2;

[0072] The first input end of the comparator N is connected to the cathode of the photodiode LED1, the second input end of the comparator N is respectively connected to the first end of the first resistor R1 and the first end of the second resistor R2, the second end of the first resistor R1 is connected to the anode of the photodiode LED1, the second end of the second resistor R2 is grounded, the power supply end of the comparator N is connected to the power supply, and the output end of the comparator N is connected to the synchronization module 12.

[0073] It should be noted that the first input terminal of the comparator N may be a non-inverting input terminal of the comparator N, and the second input terminal of the comparator N may be an inverting input terminal of the comparator N. The resistance values ​​of the first resistor R1 and the second resistor R2 may be set according to actual conditions.

[0074] It is understandable that the power supply connected to the power supply terminal of the comparator N (ie Figure 2 Vcc) may be a power supply for the comparator N to operate normally, and this embodiment does not limit this.

[0075] In actual use, the first resistor R1 and the second resistor R2, under the action of the power supply Vref, can transmit the generated reference value to the second input terminal of the comparator N through the first end of the first resistor R1. When the first input terminal of the comparator N receives the electrical signal output by the cathode of the photodiode LED1, the voltage value of the electrical signal can be compared with the reference value, and a high level is output when it is higher than the reference value, and a low level is output when it is lower than the reference value, thereby obtaining the converted electrical signal, converting the electrical signal into compliant high and low levels, and then transmitting it to the synchronization module 12.

[0076] Furthermore, the synchronization module 12 includes: a phase detector 121 and a voltage-controlled oscillator 122;

[0077] The phase detector 121 is connected to the optical receiving module 11 and the voltage controlled oscillator 122 respectively;

[0078] The phase detector 121 is used to compare the electrical signal with the oscillation signal output by the voltage-controlled oscillator 122, and transmit the generated comparison signal to the voltage-controlled oscillator 122;

[0079] The voltage-controlled oscillator 122 is used to adjust the frequency of the output oscillation signal according to the comparison signal, and transmit the adjusted oscillation signal to the phase detector 121 until the frequency of the adjusted oscillation signal is consistent with the frequency of the electrical signal.

[0080] It should be understood that, in this embodiment, the synchronization module 12 may be a module with a phase-locked loop, which may make the phase of one signal in the circuit the same as that of another signal. The phase detector 121 may be a device for comparing the phases of two signals, and the voltage-controlled oscillator 122 may be a device for adjusting the frequency of the signal according to the comparison result.

[0081] In actual use, the voltage-controlled oscillator 122 can generate an oscillation signal and transmit it to the phase detector 121. The phase detector 121 can receive the oscillation signal and compare it with the converted electrical signal output by the comparator N to determine whether the phases of the two are the same, and generate a comparison signal based on the comparison result and transmit it to the voltage-controlled oscillator 122. The comparison signal can be proportional to the phase difference between the two. After receiving the comparison signal, the voltage-controlled oscillator 122 can adjust the frequency of the output oscillation signal and transmit the adjusted oscillation signal to the phase detector 121 again. The phase detector 121 compares it with the converted electrical signal again, and repeats the above steps until the oscillation signal output by the voltage-controlled oscillator 122 is consistent in phase with the converted electrical signal, thereby indicating that the frequencies are consistent.

[0082] Furthermore, in order to smooth the output of the phase detector 121 and thus reduce unnecessary oscillations, in this embodiment, the synchronization module 12 further includes: a loop filter 123;

[0083] The loop filter 123 is connected to the phase detector 121 and the voltage controlled oscillator 122 respectively;

[0084] The loop filter 123 is used to filter the comparison signal and transmit the filtered comparison signal to the voltage-controlled oscillator 122, so that the voltage-controlled oscillator 122 adjusts the frequency of the output oscillation signal according to the filtered comparison signal.

[0085] It should also be noted that the loop filter 123 may be a low-pass filter, or other filters, which is not limited in this embodiment.

[0086] In actual use, the loop filter 123 can filter the comparison signal output by the phase detector 121 to filter out high-frequency noise and rapidly changing components, thereby avoiding unnecessary oscillations, and transmit the filtered comparison signal to the voltage-controlled oscillator 122, which then adjusts the frequency of the output oscillation signal according to the filtered comparison signal.

[0087] In this embodiment, an optical transmitting module 22 is provided in the clock signal transmitting component 2, and an optical receiving module 11 is provided in the clock signal receiving component 1. In actual use, the optical transmitting module 22 converts the initial clock signal into an optical signal and transmits it to the optical receiving module 11. The optical receiving module 11 then converts the optical signal into an electrical signal and transmits it to the synchronization module 12. The synchronization module 12 then synchronizes according to the electrical signal. Compared with the existing transmission in the form of electrical signals, this embodiment transmits the clock signal in the form of optical signals. Since optical signals are not easily interfered, the synchronization effect can be improved.

[0088] Reference Figure 3 , Figure 3 This is a structural diagram of the second embodiment of the clock signal receiving component of the present application. Based on the above-mentioned first embodiment of the clock signal receiving component, the second embodiment of the clock signal receiving component of the present application is proposed.

[0089] like Figure 3 As shown, in this embodiment, in order to make the clock signal receiving component 1 start to work with the clock signal after the clock signal is synchronized, the clock signal receiving component 1 further includes: a first processing module 14, and the synchronization module 12 further includes: a judgment unit 124;

[0090] The first processing module 14 is respectively connected to the phase detector 121, the voltage-controlled oscillator and the judgment unit 124, and the judgment unit 124 is also connected to the phase detector 121;

[0091] The judging unit 124 is configured to transmit the generated working signal to the first processing module 14 when the signal value of the comparison signal reaches a preset condition;

[0092] The first processing module 14 is configured to use the adjusted oscillation signal output by the voltage-controlled oscillator 122 as a synchronous clock signal when receiving the working signal, and operate based on the synchronous clock signal.

[0093] It should be noted that the first processing module 14 can be any module that needs to use a clock signal to work. Based on the above example, in this embodiment, the first processing module 14 can be a module in the left earphone for playing audio based on a clock signal, which can be consistent with the module for playing audio in an existing earphone, and this embodiment will not be repeated.

[0094] It is understandable that the judgment unit 124 may be any unit with a judgment function, such as a comparator, etc., and this embodiment does not limit this. The preset condition may be a condition corresponding to the comparison signal generated by the phase detector 121 when the phases of the oscillation signal and the electrical signal are the same, such as reaching a preset signal threshold, etc., and this embodiment does not limit this. The synchronous clock signal may be a signal when clock synchronization is completed.

[0095] In actual use, the phase detector 121 compares the oscillation signal and the received converted electrical signal to generate a comparison signal, and transmits it to the judgment unit 124 and the loop filter 123 respectively, wherein the judgment unit 124 can judge whether the signal value of the comparison signal meets the preset condition, that is, whether the oscillation signal and the converted electrical signal are in phase; if the preset condition is not met, it can be explained that the oscillation signal and the converted electrical signal are in phase at this time and need to be adjusted, then the judgment unit 124 can generate a stop working signal and transmit it to the first processing module 14. After receiving the stop working signal, the first processing module 14 can know that the oscillation signal at this time has not been synchronized and cannot be used as The clock signal is used; at this time, the voltage-controlled oscillator 122 performs frequency adjustment, and the phase detector 121 compares the adjusted oscillation signal with the converted electrical signal to generate a comparison signal. When the judgment unit 124 determines that its signal value reaches the corresponding preset condition according to the comparison signal, it can be said that the adjusted oscillation signal and the converted electrical signal are in phase, and the clock synchronization is completed. The judgment unit 124 can generate a working signal and transmit it to the first processing module 14. After receiving the working signal, the first processing module 14 can know that the synchronization is completed at this time and can be used as a clock signal, that is, the adjusted oscillation signal output by the voltage-controlled oscillator 122 at this time is used as a synchronization clock signal.

[0096] In addition, to achieve the above-mentioned purpose, the embodiment of the present application also provides a clock signal transmitting component 2, referring to Figure 4 , Figure 4 This is a circuit schematic diagram of the first embodiment of the clock signal transmitting component 2 of the present application. Based on the above-mentioned embodiments of the clock signal receiving component 1, the first embodiment of the clock signal transmitting component 2 of the present application is proposed.

[0097] like Figure 4 As shown, in this embodiment, the clock signal transmitting component 2 includes: a second processing module 21 and an optical transmitting module 22;

[0098] The optical transmission module 22 is respectively connected to the second processing module 21 and the clock signal receiving component 1 as described above;

[0099] The optical transmitting module 22 is used to convert the initial clock signal generated by the second processing module 21 into an optical signal, and transmit the optical signal to the optical receiving module 11 of the clock signal receiving component 1, so that the clock signal receiving component 1 performs clock synchronization according to the optical signal.

[0100] It should be noted that the above-mentioned second processing module 21 can be any module for generating a clock signal, such as a module with a crystal oscillator, etc. Specifically, the above-mentioned second processing module 21 in this embodiment can be consistent with the module structure for generating a clock signal in the existing clock signal transmitting component 2, and this embodiment will not elaborate on this.

[0101] In actual use, the second processing module 21 may first generate a clock pulse signal as the initial clock signal and transmit it to the optical transmitter module 22. After receiving the initial clock signal, the optical transmitter module 22 may convert it into an optical signal and transmit it to the optical receiving module 11 in the clock signal receiving component 1 through an optical fiber, so that the clock signal receiving component 1 may perform clock synchronization according to the optical signal. Compared with the existing form of using electrical signals, the optical signal form is not easy to introduce interference, and is not easy to be distorted during long-distance transmission, thereby improving the clock synchronization effect.

[0102] Furthermore, this embodiment adopts the form of optical signals, which can have a faster transmission speed and response speed, thereby improving the synchronization efficiency.

[0103] Further, in order to convert the initial clock signal into an optical signal, in this embodiment, the optical transmission module 22 includes: a light emitting diode LED2;

[0104] The anode of the light emitting diode LED2 is connected to the second processing module 21 , and the cathode of the light emitting diode LED2 is connected to the second processing module 21 .

[0105] It is understandable that the light emitting module 22 in this embodiment may be provided with a light emitting diode LED2. The second processing module 21 may transmit the generated initial clock signal to the anode of the light emitting diode LED2, and the initial clock signal may be converted into a light signal after passing through the light emitting diode LED2, and the light emitting diode LED2 may then transmit the light signal to the connected optical fiber, thereby transmitting the light signal to the light receiving module 11 through the optical fiber.

[0106] In this embodiment, an optical transmitting module 22 is provided in the clock signal transmitting component 2, and an optical receiving module 11 is provided in the clock signal receiving component 1. In actual use, the second processing module 21 can first generate an initial clock signal and transmit it to the optical transmitting module 22, and the optical transmitting module 22 converts the initial clock signal into an optical signal and transmits it to the optical receiving module 11, so that the clock signal receiving component 1 performs clock synchronization according to the optical signal. Compared with the existing transmission in the form of electrical signals, this embodiment transmits the clock signal in the form of optical signals. Since optical signals are not easy to introduce interference, the synchronization effect can be improved.

[0107] In addition, to achieve the above-mentioned purpose, an embodiment of the present application further provides a clock synchronization system, the clock synchronization system comprising the clock signal receiving component 1 as described above and the clock signal transmitting component 2 as described above;

[0108] The clock signal transmitting component 2 is connected to the clock signal receiving component 1 via an optical fiber.

[0109] It should be understood that the specific results of the clock synchronization system in this embodiment can refer to the embodiments of the above-mentioned clock signal receiving components 1 and the embodiments of the clock signal transmitting components 2, which will not be elaborated in this embodiment.

[0110] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0111] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0112] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A clock signal receiving component, characterized in that: The clock signal receiving component includes: an optical receiving module and a synchronization module; The optical receiving module is connected to the clock signal transmitting component and the synchronization module respectively, and the clock signal transmitting component is provided with an optical transmitting module; The optical receiving module is used to receive the optical signal transmitted by the optical transmitting module, and convert the optical signal into an electrical signal and transmit it to the synchronization module, wherein the optical signal is generated by the optical transmitting module according to the initial clock signal; The synchronization module is used to perform clock synchronization according to the electrical signal.

2. The clock signal receiving component according to claim 1, characterized in that: The clock signal receiving component further includes: a conversion module; The conversion module is connected to the optical receiving module and the synchronization module respectively; The conversion module is used to perform analog-to-digital conversion on the electrical signal and transmit the converted electrical signal to the synchronization module, so that the synchronization module performs clock synchronization according to the converted electrical signal.

3. The clock signal receiving component according to claim 2, characterized in that: The light receiving module comprises: a photodiode; The anode of the photodiode is connected to a power source, and the cathode of the photodiode is connected to the conversion module.

4. The clock signal receiving component according to claim 3, characterized in that: The conversion module includes: a comparator, a first resistor and a second resistor; The first input terminal of the comparator is connected to the cathode of the photodiode, the second input terminal of the comparator is respectively connected to the first end of the first resistor and the first end of the second resistor, the second end of the first resistor is connected to the anode of the photodiode, the second end of the second resistor is grounded, the power supply terminal of the comparator is connected to the power supply, and the output terminal of the comparator is connected to the synchronization module.

5. The clock signal receiving component according to any one of claims 1 to 4, characterized in that: The synchronization module includes: a phase detector and a voltage-controlled oscillator; The phase detector is connected to the optical receiving module and the voltage-controlled oscillator respectively; The phase detector is used to compare the electrical signal with the oscillation signal output by the voltage-controlled oscillator, and transmit the generated comparison signal to the voltage-controlled oscillator; The voltage-controlled oscillator is used to adjust the frequency of the output oscillation signal according to the comparison signal, and transmit the adjusted oscillation signal to the phase detector until the frequency of the adjusted oscillation signal is consistent with the frequency of the electrical signal.

6. The clock signal receiving component according to claim 5, characterized in that: The synchronization module also includes: a loop filter; The loop filter is connected to the phase detector and the voltage-controlled oscillator respectively; The loop filter is used to filter the comparison signal and transmit the filtered comparison signal to the voltage-controlled oscillator, so that the voltage-controlled oscillator adjusts the frequency of the output oscillation signal according to the filtered comparison signal.

7. The clock signal receiving component according to claim 5, characterized in that: The clock signal receiving component further includes: a first processing module, and the synchronization module further includes: a judgment unit; The first processing module is connected to the phase detector, the voltage-controlled oscillator and the judgment unit respectively, and the judgment unit is also connected to the phase detector; The judging unit is configured to transmit the generated working signal to the first processing module when the signal value of the comparison signal reaches a preset condition; The first processing module is used to use the adjusted oscillation signal output by the voltage-controlled oscillator as a synchronous clock signal when receiving the working signal, and operate based on the synchronous clock signal.

8. A clock signal transmitting component, characterized in that: The clock signal transmitting component includes: a second processing module and an optical transmitting module; The optical transmission module is respectively connected to the second processing module and the clock signal receiving component according to any one of claims 1 to 7; The optical transmitting module is used to convert the initial clock signal generated by the second processing module into an optical signal, and transmit the optical signal to the optical receiving module of the clock signal receiving component, so that the clock signal receiving component performs clock synchronization according to the optical signal.

9. The clock signal transmitting component according to claim 8, characterized in that: The light emitting module comprises: a light emitting diode; The anode of the light emitting diode is connected to the second processing module, and the cathode of the light emitting diode is connected to the second processing module.

10. A clock synchronization system, characterized in that: The clock synchronization system comprises a clock signal receiving component according to any one of claims 1 to 7 and a clock signal transmitting component according to claim 8 or 9; The clock signal transmitting component and the clock signal receiving component are connected via an optical fiber.

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