Control method and apparatus

Abstract

A control method and apparatus, relating to the technical field of chips, and capable of reducing the power consumption of a folding screen device. The control apparatus (130) comprises: a processor (131), located on a first circuit board (180) corresponding to a first screen (171) in a folding screen device, and configured to generate a control signal, the control signal being used for controlling an operation mode of a connection apparatus (140); and a transmission interface (132), configured to transmit the control signal to the connection apparatus (140). The connection apparatus (140) is located on a second circuit board (190) corresponding to a second screen (172) in the folding screen device, and is configured to transmit a system signal between the first circuit board (180) and the second circuit board (190). The control apparatus (130) may send the control signal to the connection apparatus (140) to control the operation mode of the connection apparatus (140), so as to adjust and control the operation power of the connection apparatus (140), thereby reducing the power consumption of the folding screen device. For example, when the connection apparatus (140) of the folding screen device has no system signal transmission requirements, a control signal is sent to the connection apparatus (140) to control the connection apparatus (140) to enter a sleep mode, thereby reducing the power consumption of the folding screen device.

Description

Control method and device

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on September 4, 2023, with application number 202311138996.8 and application name “Control Method and Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The embodiments of the present application relate to the field of chip technology, and in particular to control methods and devices. Background Art

[0003] Foldable screens are a subset of flexible screens. They can bend 360 degrees and even twist. Compared to standard screens, foldable screens offer a larger display area when unfolded, enhancing visual quality. When folded, they are also compact, making them easy to carry.

[0004] The current hardware design of foldable screen devices consists of two circuit boards: a main board and a sub-board. The main and sub-boards are connected by cables to transmit signals of functional components (such as speakers, microphones, sensors, etc.). As the number of functional components included in current foldable screen devices increases, the number of cables installed between the main and sub-boards also increases, thereby occupying a larger internal space of the foldable screen device and restricting the internal structure design and layout of the foldable screen device. By providing a connection device with an aggregate transmission function between the main and sub-boards to replace the cables to transmit signals, the number of cables between the main and sub-boards can be reduced, releasing the limitations of the internal structure design and layout of the foldable screen device. However, this will increase the power consumption of the foldable screen device and reduce the battery life of the foldable screen device.

[0005] To this end, how to reduce the power consumption of foldable screen devices is one of the problems that technical personnel in this field urgently need to solve.

[0006] Summary of the Invention

[0007] The embodiments of the present application provide a control method and apparatus that can reduce the power consumption of a foldable screen device. To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0008] In a first aspect, an embodiment of the present application provides a control device for a connecting device of a folding screen device, the control device comprising: a processor, located on a first circuit board corresponding to the first screen in the folding screen device, for generating a control signal, wherein the control signal is used to control the operating mode of the connecting device. A transmission interface, for sending the control signal to the connecting device. The connecting device is located on a second circuit board corresponding to the second screen in the folding screen device, for transmitting system signals between the first circuit board and the second circuit board.

[0009] It can be seen that the control device provided in the embodiment of the present application can send a control signal to the connection device to control the operating mode of the connection device, thereby adjusting the operating power of the control connection device, thereby reducing the power consumption of the folding screen device. For example, when the connection device of the folding screen device has no system signal transmission requirements, a control signal can be sent to the connection device to control the connection device to enter a sleep mode, thereby reducing the power consumption of the folding screen device (connection device).

[0010] In a possible implementation, the control signal includes a sleep control signal, and the sleep control signal is used to control the connection device to enter a sleep mode. In the sleep mode, the connection device stops transmitting the system signal.

[0011] It can be understood that by controlling the above-mentioned connecting device to enter the sleep mode through the sleep control signal so that the connecting device stops transmitting the above-mentioned system signal, the power consumption of the connecting device of the folding screen device can be reduced.

[0012] In a possible implementation, the processor is specifically configured to generate the sleep control signal when it is determined that the system signal transmission is not required between the first circuit board and the second circuit board.

[0013] It is understandable that, when it is determined that the system signal transmission is not required between the first circuit board and the second circuit board, the sleep control signal is generated to cause the connection device to stop transmitting the system signal. This does not affect the system signal transmission and can also reduce the power consumption of the connection device of the foldable screen device.

[0014] In one possible implementation, the processor is further configured to control the transmission interface to enter a sleep mode, thereby further reducing the power consumption of the connection device of the folding screen device.

[0015] For example, the transmission interface may be a peripheral component interconnect express (PCI E) interface or an aggregation chip. The aggregation chip may include a multiplexer (MUX).

[0016] In a possible implementation, the control signal includes a working control signal, and the working control signal is used to control the connecting device to enter a working mode. In the working mode, the connecting device is used to transmit the system signal.

[0017] It can be understood that the above-mentioned connecting device is controlled to enter the working mode through the working control signal, so that the connecting device transmits the above-mentioned system signal, thereby meeting the requirement of the folding screen device to transmit the system signal through the connecting device.

[0018] In a possible implementation, the processor is specifically configured to generate the work control signal when it is determined that the system signal transmission is required between the first circuit board and the second circuit board.

[0019] It can be understood that the above-mentioned working control signal is generated only when it is determined that the above-mentioned system signal needs to be transmitted between the above-mentioned first circuit board and the above-mentioned second circuit board, so that the connecting device transmits the above-mentioned system signal, the connecting device can work as needed, and the working time of the connecting device can be reduced, thereby reducing the power consumption of the connecting device of the folding screen device.

[0020] In a possible implementation, the transmission interface is controlled to enter a working mode.

[0021] It can be understood that by controlling the above-mentioned transmission interface to enter the working mode so that the transmission interface can transmit the above-mentioned system signal, the requirement of the folding screen device to transmit the control signal through the above-mentioned transmission interface can be met.

[0022] In one possible implementation, the connecting device is used to receive the system signal from the first circuit board and convert the system signal into one or more component control signals, wherein the one or more component control signals are used to control one or more functional components on the second circuit board.

[0023] Exemplarily, the above-mentioned functional elements may be a speaker, a microphone, a sensor, a memory card, a subscriber identification module (SIM) card, a vibration motor, a display screen, a touch screen, a camera module, an antenna module, a fingerprint recognition module, a charging port or other functional elements.

[0024] In a second aspect, an embodiment of the present application provides a connection device for a foldable screen device. The connection device is located on a second circuit board corresponding to the second screen of the foldable screen device, and includes: a signal transmission circuit for transmitting system signals between the first circuit board and the second circuit board in the foldable screen device; a controller for receiving a control signal from a control device and controlling the operating mode of the connection device according to the control signal; the control device is located on the first circuit board.

[0025] The control signal includes a sleep control signal, and the sleep control signal is used to control the connection device to enter the sleep mode; the signal transmission circuit is used to stop transmitting the system signal in the sleep mode.

[0026] In a possible implementation, the control signal includes a working control signal, and the working control signal is used to control the connecting device to enter a working mode; the signal transmission circuit is used to transmit the system signal in the working mode.

[0027] In one possible implementation, the signal transmission circuit is used to receive the system signal from the first circuit board and convert the system signal into one or more component control signals, wherein the one or more component control signals are used to control one or more functional components on the second circuit board.

[0028] In a third aspect, an embodiment of the present application further provides an electronic device, which includes the above-mentioned control device in the first aspect or any possible implementation thereof and the above-mentioned connection device in the second aspect or any possible implementation thereof.

[0029] Exemplarily, the above-mentioned electronic device may be a foldable screen device.

[0030] Fourthly, embodiments of the present application further provide a control method, comprising: generating a control signal, the control signal being used to control an operating mode of a connection device; and transmitting the control signal to the connection device. The connection device is located on a second circuit board corresponding to the second screen of the foldable screen device and is used to transmit system signals between the first circuit board and the second circuit board.

[0031] In one possible implementation, the above-mentioned control signal includes a sleep control signal or a working control signal. The above-mentioned sleep control signal is used to control the above-mentioned connection device to enter the sleep mode, and in the above-mentioned sleep mode, the above-mentioned connection device stops transmitting the above-mentioned system signal. The above-mentioned working control signal is used to control the above-mentioned connection device to enter the working mode, and in the above-mentioned working mode, the above-mentioned connection device is used to transmit the above-mentioned system signal.

[0032] In a fifth aspect, an embodiment of the present application further provides another control method, which includes: receiving a control signal from a control device; controlling an operating mode of the connecting device according to the control signal, wherein the control device is located on the first circuit board.

[0033] In one possible implementation, the control signal includes a sleep control signal or a working control signal. The sleep control signal is used to control the connection device to enter sleep mode, and the connection device stops transmitting the system signal in the sleep mode. The working control signal is used to control the connection device to enter working mode, and the connection device transmits the system signal in the working mode.

[0034] In a sixth aspect, embodiments of the present application further provide a chip comprising: a transmission interface and at least one processor. Optionally, the chip further comprises a memory. The at least one processor is configured to execute code in the memory. When the at least one processor executes the code, the chip implements the method described in the fourth aspect or any possible implementation thereof.

[0035] Optionally, the chip may also be an integrated circuit.

[0036] Exemplarily, the chip may be a chip in a control device of a connection device for a folding screen device or a chip in a connection device for a folding screen device.

[0037] In a seventh aspect, an embodiment of the present application further provides a computer-readable storage medium for storing a computer program, which includes a method for implementing the method described in the fourth aspect or any possible implementation thereof.

[0038] In an eighth aspect, an embodiment of the present application further provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to implement the method described in the fourth aspect or any possible implementation thereof.

[0039] The control device, computer storage medium, computer program product and chip provided in this embodiment are all used to execute the method provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the method provided above and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0041] FIG1 is a schematic structural diagram of a folding screen device provided in an embodiment of the present application;

[0042] FIG2 is another schematic diagram of the structure of a folding screen device provided in an embodiment of the present application;

[0043] FIG3 is a schematic block diagram of a signal transmission principle provided by an embodiment of the present application;

[0044] FIG4 is another schematic block diagram of a signal transmission principle provided in an embodiment of the present application;

[0045] FIG5 is another schematic block diagram of a signal transmission principle provided in an embodiment of the present application;

[0046] FIG6 is another schematic block diagram of a signal transmission principle provided in an embodiment of the present application;

[0047] FIG7 is another schematic block diagram of a signal transmission principle provided in an embodiment of the present application;

[0048] FIG8 is a flow chart of a control method provided in an embodiment of the present application;

[0049] FIG9 is a flow chart of another control method provided in an embodiment of the present application;

[0050] FIG10 is a schematic diagram of the structure of a chip provided in an embodiment of the present application. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the embodiments of this application.

[0052] The term "and / or" in this article is merely a description of the association relationship between associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0053] The terms "first" and "second" and so on in the description and drawings of the embodiments of this application are used to distinguish different objects, or to distinguish different processing of the same object, rather than to describe a specific order of objects.

[0054] Furthermore, the terms "including," "having," and any variations thereof, mentioned in the description of the embodiments of the present application are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or units is not limited to the listed steps or units but may optionally include other steps or units not listed, or may optionally include other steps or units inherent to the process, method, product, or apparatus.

[0055] It should be noted that in the description of the embodiments of this application, words such as "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplarily" or "for example" in the embodiments of this application should not be interpreted as having priority or advantage over other embodiments or designs. Rather, the use of words such as "exemplarily" or "for example" is intended to present the relevant concepts in a concrete manner.

[0056] Foldable screens are a subset of flexible screens. They can bend 360 degrees and even twist. Compared to standard screens, foldable screens offer a larger display area when unfolded, enhancing visual quality. When folded, they are also compact, making them easy to carry.

[0057] The current hardware design of foldable screen devices consists of two circuit boards: a main board and a sub-board. The main and sub-boards are connected by cables to transmit signals of functional components (such as speakers, microphones, sensors, etc.). As the number of functional components included in current foldable screen devices increases, the number of cables installed between the main and sub-boards also increases, thereby occupying a larger internal space of the foldable screen device and restricting the internal structure design and layout of the foldable screen device. By providing a connection device with an aggregate transmission function between the main and sub-boards to replace the cables to transmit signals, the number of cables between the main and sub-boards can be reduced, releasing the limitations of the internal structure design and layout of the foldable screen device. However, this will increase the power consumption of the foldable screen device and reduce the battery life of the foldable screen device.

[0058] To this end, an embodiment of the present application provides a control device for a connection device of a foldable screen device. The control device is applicable to a foldable screen device and can reduce the power consumption of the foldable screen device. Figure 1 shows a schematic structural diagram of the foldable screen device in an open state. As shown in Figure 1, the foldable screen device provided in the embodiment of the present application includes a housing 110 and a flexible display screen 170.

[0059] Among them, the shell 110 constructs the appearance of the folding screen device. The shell 110 can be a metal shell, such as magnesium alloy, aluminum alloy, stainless steel and other metals. In addition, it can also be a plastic shell, a glass shell, a ceramic shell, etc., but not limited to this. The shell 110 usually includes structures such as a frame, a middle frame, and a back cover. The interior of the shell 110 has an installation cavity, and various electronic components are installed in the installation cavity, such as a circuit board, a processor provided on the circuit board, a battery, and various functional components such as a camera, a flash, a microphone, and a speaker, but not limited to this.

[0060] The folding screen device also includes a flexible display screen 170 provided on the housing 110. The flexible display screen 170 serves as the front panel of the folding screen device and forms the aforementioned mounting cavity with the housing 110. The flexible display screen 170 constitutes the display surface of the folding screen device, which is used to display images, text and other information, and provide information interaction. The flexible display screen 170 has flexible and bendable characteristics. For example, the flexible display screen 170 can be an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode (MIL-I) display screen, a micro organic light-emitting diode (MIL-I) display screen, a micro organic light-emitting diode (MIL-I) display screen, a quantum dot light-emitting diode (QLED) display screen, etc., but is not limited to this.

[0061] 1 , the housing 110 is composed of multiple parts, including a first housing 111, a folding mechanism 113, and a second housing 112, which are sequentially connected. The folding mechanism 113 can be deformed to allow the first housing 111 and the second housing 112 to be relatively unfolded or folded.

[0062] The display screen 170 includes a first screen 171 , a bending portion 173 and a second screen 172 connected in sequence. The first shell 111 is fixedly connected to the first screen 171 , the second shell 112 is fixedly connected to the second screen 173 , and the folding mechanism 113 is opposite to the bending portion 173 .

[0063] Figure 2 is a rear view of the foldable screen device shown in Figure 1 with the cover removed. As shown in Figure 2, in this embodiment of the present application, the foldable screen device further includes a first flexible circuit board 120, a first circuit board 180, and a second circuit board 190, which are disposed within the housing 110. The first circuit board 180 is the circuit board corresponding to the first screen 171 and is disposed within the first housing 111. The second circuit board 190 is the circuit board corresponding to the second screen 172 and is disposed within the second housing 112. The first flexible circuit board 120 extends through the folding mechanism 113 to connect the first circuit board 180 and the second circuit board 190, thereby enabling signal conduction between the first circuit board 180 and the second circuit board 190.

[0064] As shown in Figure 2, in an embodiment of the present application, a first battery 191 and a first small plate 193 are further provided inside the first shell 111. The first circuit board 180, the first battery 191 and the first small plate 193 are stacked in sequence from top to bottom to form a traditional three-stage design architecture. The first circuit board 180 and the first small plate 193 are electrically connected through a third flexible circuit board 195. The third flexible circuit board 195 is clamped between the first battery 191 and the foldable middle frame.

[0065] Similarly, a second battery 192 and a second small plate 194 are also provided inside the second shell 112. The second circuit board 190, the second battery 192 and the second small plate 194 are stacked in sequence from top to bottom to form a traditional three-stage design structure. The second circuit board 190 and the second small plate 194 are electrically connected through a second flexible circuit board 196. The second flexible circuit board 196 is clamped between the second battery 192 and the foldable middle frame.

[0066] Alternatively, in other implementations, the third flexible circuit board 195 and the second flexible circuit board 196 may be disposed between the battery and the rear cover. For example, the third flexible circuit board 195 may be disposed between the first battery 191 and the rear cover of the first housing 111, and the second flexible circuit board 196 may be disposed between the second battery 192 and the rear cover of the second housing 112.

[0067] Figure 3 is a schematic block diagram of the signal transmission principle of the foldable screen device provided in an embodiment of the present application. As shown in Figures 2 and 3, in this embodiment of the present application, a control device 130 is provided on a first circuit board 180, and a connecting device 140 is provided on a second circuit board 190. The control device 130 and the connecting device 140 are used in conjunction with each other to transmit system signals between the first circuit board 180 and the second circuit board 190.

[0068] In one possible implementation, the connection device 140 is specifically configured to receive a system signal from the first circuit board 180 and convert the system signal into one or more component control signals, wherein the one or more component control signals are used to control one or more functional components on the second circuit board 190. Specifically, each component control signal can control the opening, closing, operating state, etc. of the corresponding component.

[0069] In one possible implementation, the control device 130 is specifically configured to receive a system signal from the second circuit board 180. The system signal may be obtained by aggregating one or more data signals. For example, the system signal may be obtained by aggregating data signals collected by sensor devices such as a brightness sensor, a temperature sensor, a pressure sensor, an acceleration sensor, and a gyroscope.

[0070] Accordingly, the connection device 140 may generate a corresponding component control signal according to the system signal from the second circuit board 180 .

[0071] For example, the connecting device 140 can generate a corresponding component control signal based on a data signal from a brightness sensor in the second circuit board 180 to adjust the brightness of the flexible display screen 170 .

[0072] Exemplarily, the above-mentioned functional elements may be speakers, microphones, sensors, memory cards, SIM cards, vibration motors, display screens, touch screens, camera modules, antenna modules, fingerprint recognition modules, charging interfaces or other functional elements.

[0073] Exemplarily, the above-mentioned system signals may include bus data signals such as an inter-integrated circuit (I2C), a serial peripheral interface (SPI), an integrated circuit built-in audio bus (I2S), and a general purpose input / output port (GPIO).

[0074] It should be noted that the connecting device 140 uses the first flexible circuit board 120 as a unified transmission line and converts the system signal transmitted by the transmission line into signals of multiple working devices on the second screen, which is equivalent to a one-to-many mapping signal. Such conversion does not require the installation of many lines on the folding screen device, realizes the centralization of the transmission lines of the folding screen device, compresses the spatial size of the transmission lines, simplifies the hinge design of the folding device, effectively improves the impact of the transmission lines on the reliability of the entire device, and enhances the strength of the entire device. In other words, the connecting device 160 in the embodiment of the present application uses the first flexible circuit board 120 as a unified transmission line, which can also reduce the design difficulty of the folding mechanism of the foldable terminal device and help improve the reliability of the folding mechanism and the mechanical strength of the entire device.

[0075] As shown in FIG. 3 , the control device 130 includes a processor 131 and a transmission interface 132 .

[0076] The processor 131 is configured to generate a control signal, where the control signal is used to control the operation mode of the connection device 140 .

[0077] Exemplarily, the processor 131 may be a microcontroller unit (MCU).

[0078] The transmission interface 132 is used to send the control signal to the connection device 140 .

[0079] It can be understood that in the embodiments of the present application, "sending information to... (e.g., a connecting device)" or the related illustrations in the accompanying drawings can be understood as the destination end of the information being the connecting device. It can include sending information to the connecting device directly or indirectly. "Receiving information from... (e.g., a connecting device)" or "receiving information from... (e.g., a connecting device)", or the related illustrations in the accompanying drawings can be understood as the source end of the information being the connecting device, which can include receiving information from the connecting device directly or indirectly. The information may be processed as necessary between the source end and the destination end of the information transmission, such as format changes, etc., but the destination end can understand the valid information from the source end. Similar expressions in the embodiments of the present application can be understood similarly and will not be repeated here.

[0080] In a possible implementation, the control signal includes a sleep control signal.

[0081] The sleep control signal is used to control the connection device 140 to enter a sleep mode. In the sleep mode, the connection device 140 stops transmitting the system signal.

[0082] It should be noted that the aforementioned connection device can enter sleep mode by reducing clock frequency and operating current, thereby reducing operating power consumption. Specifically, when the connection device enters sleep mode from operating mode, the clock frequency, operating current, and operating power consumption of the connection device will be reduced compared to operating mode. After entering sleep mode, the connection device will no longer be able to receive system signals.

[0083] The connection device 140 can determine the mode it is in through the status register. For example, when the status register value is 1, the connection device is in the working mode, and when the status register value is 0, the connection device is in the sleep mode.

[0084] In a possible implementation, the processor 131 is specifically configured to generate the sleep control signal when it is determined that the system signal transmission is not required between the first circuit board and the second circuit board.

[0085] In a possible implementation, the processor 131 is further configured to control the transmission interface to enter a sleep mode.

[0086] Exemplarily, the processor 131 may control the transmission interface 132 to enter the sleep mode after the transmission interface 132 sends a sleep control signal to the connection device 140 .

[0087] In a possible implementation, the control signal includes a working control signal.

[0088] The working control signal is used to control the connecting device 140 to enter a working mode, in which the connecting device 140 is used to transmit the system signal. After entering the working mode, the connecting device can transmit the system signal.

[0089] It should be noted that the above-mentioned connection device can enter the working mode by increasing the clock frequency, working current, etc. That is, after the connection device enters the working mode from the sleep mode, the clock frequency, working current and operating power consumption of the connection device will increase.

[0090] In a possible implementation, the processor 131 is specifically configured to generate the work control signal when it is determined that the system signal transmission is required between the first circuit board and the second circuit board.

[0091] For example, the processor 131 can generate the above-mentioned work control signal when the folding screen device has services such as operator network authentication, fixed dialing, SIM card file operation, SIM card presence status query, and SIM card initialization.

[0092] In a possible implementation, the processor 131 is further configured to control the transmission interface to enter a working mode.

[0093] Exemplarily, when the processor 131 determines that system signal transmission is required between the first circuit board and the second circuit board, it can generate the above-mentioned working control signal and control the above-mentioned transmission interface 132 to enter the working mode, so that the transmission interface 132 can send the working control signal to the connecting device 140.

[0094] In a possible implementation, the control signal includes a shutdown control signal.

[0095] The shutdown control signal is used to control the connection device 140 to shut down, and the connection device 140 stops transmitting the system signal in the shutdown state.

[0096] In one possible implementation, the processor 131 is specifically used to generate the shutdown control signal when it is determined that the system signal transmission is not required between the first circuit board and the second circuit board and the duration of time the connecting device is in sleep mode exceeds a preset duration.

[0097] As shown in FIG. 3 , the connection device 140 includes a signal transmission circuit 141 and a controller 142 .

[0098] A signal transmission circuit 141, configured to transmit system signals between the first circuit board and the second circuit board in the folding screen device;

[0099] The controller 142 is configured to receive a control signal from the control device 130 and control the operation mode of the connection device according to the control signal.

[0100] In a possible implementation, the controller 142 may also receive control signals sent from other components on the first circuit board 180 .

[0101] In one possible implementation, the signal transmission circuit 141 is specifically used to receive the above-mentioned system signal from the above-mentioned first circuit board, and convert the above-mentioned system signal into one or more component control signals, wherein the above-mentioned one or more component control signals are used to control one or more functional components on the above-mentioned second circuit board.

[0102] In a possible implementation, the signal transmission circuit 141 is configured to stop transmitting system signals in the sleep mode.

[0103] For example, the controller 142 may control the signal transmission circuit 141 to power off after receiving the sleep control signal.

[0104] In a possible implementation, the signal transmission circuit 141 is configured to transmit system signals in a working mode.

[0105] For example, the controller 142 may control the signal transmission circuit 141 to power on after receiving the working control signal.

[0106] As shown in FIG. 3 , the connection device 140 includes a signal transmission circuit 141 and a controller 142 .

[0107] FIG4 is another schematic block diagram of the signal transmission principle of the foldable screen device provided in an embodiment of the present application. As shown in FIG4 , the transmission interface 132 of the control device 130 includes a first multiplexer 133. The signal transmission circuit 141 of the connection device 140 includes a first demultiplexer (DEMUX) 143.

[0108] The first multiplexer 133 is used to multiplex (also commonly referred to as convergence, aggregation or combination) the multiple digital signals to be transmitted to obtain a system signal, and send the system signal to the connecting device 140 through the first flexible circuit board 120. It is easy to understand that the multiple digital signals to be transmitted here are the digital signals that need to be transmitted between the first circuit board 180 and the second circuit board 190.

[0109] The first demultiplexer 143 is used in conjunction with the first multiplexer 133. The first demultiplexer 143 is used to demultiplex (usually also called restore, reconstruct, decompose or branch) the system signal obtained by multiplexing by the first multiplexer 133 and output the component control signal.

[0110] Here, the first multiplexer 133 can multiplex multiple digital signals according to a preset logic. For example, it multiplexes multiple digital signals into one channel (inserted into corresponding time slots) and then transmits them to the first demultiplexer 143 via the first flexible printed circuit board 120. The first demultiplexer 143 then demultiplexes the multiple digital signals according to the corresponding logic and distributes them to the signal receiver, which can be, for example, a processor or a functional element (circuit).

[0111] According to the folding screen device provided by the embodiment of the present application, a first multiplexer 133 is set on the first circuit board 180, and a first demultiplexer 143 is set on the second circuit board 190. The two devices are used in conjunction with each other. The first multiplexer 133 located on the first circuit board 180 (i.e., the signal input end) multiplexes the multiple digital signals to be transmitted and then sends them to the second circuit board 190 through the first flexible circuit board 120, while the first demultiplexer 143 located on the second circuit board 190 (i.e., the signal output end) demultiplexes the multiplexed signals and then transmits them to the corresponding signal receiver, thereby not affecting the normal transmission of the multiple digital signals.

[0112] On this basis, the folding screen device provided in the embodiment of the present application uses multiplexing technology to combine multiple digital signals and transmit them on a physical channel, which can effectively utilize communication lines and reduce the number of physical channels required for signal transmission. The physical channel is set on the first flexible circuit board 120. The number of physical channels is positively correlated with the size of the first flexible circuit board 120. Therefore, the reduction of physical channels also reduces the size of the first flexible circuit board 120 (such as width and / or thickness). As a result, the layout space of other components inside the folding screen device is expanded, the internal structure of the folding screen device is effectively optimized, and the difficulty of the internal structural design and layout of the folding screen device is reduced. It is also conducive to the miniaturization and lightweight design of the folding screen device, which can improve the user experience. In addition, since the size of the first flexible circuit board 120 is reduced, the capacity of the battery is increased, which is conducive to increasing the battery life of the folding screen device.

[0113] Figure 5 is another schematic block diagram of the signal transmission principle of the folding screen device provided by an embodiment of the present application. As shown in Figure 5, the folding screen device provided by an embodiment of the present application also includes a first processor 150 and a plurality of first circuits 160, and the first circuit 160 includes, for example, circuit #1 to circuit #5 in the figure. Among them, the plurality of first circuits 160 are arranged on the second circuit board 190, and the first processor 150 is arranged on the first circuit board 180, and is used to control the actions of the plurality of first circuits 160. The first circuit 160 operates according to the signal sent by the first processor 150. The first circuit 160 can be a circuit of a functional element, which is used to control the action of the functional element. The first circuit 160 and the functional element can correspond one to one. For example, the circuit #1 to the circuit #5 in Figure 5 respectively correspond to (represent) the circuits of five different functional elements.

[0114] In one possible implementation, the first processor 150 and the processor 131 may be the same processor.

[0115] Optionally, in other implementations, there may be only one first circuit 160 , which is not specifically limited in the present application. The embodiment of the present application is described by taking multiple first circuits 160 as an example.

[0116] At this time, the first multiplexer 133 at least multiplexes the first signal sent by the first processor 150, the first demultiplexer 143 is used to demultiplex the multiplexed first signal of the first processor 150, and the first circuit 160 operates according to the demultiplexed signal by the first demultiplexer 143.

[0117] Specifically, as shown in Figure 5, in an embodiment of the present application, the first multiplexer 133 multiplexes the multiple digital signals generated by the first processor 150 and sends them to the first demultiplexer 143 through the first flexible circuit board 120. The first demultiplexer 143 demultiplexes the multiplexed digital signals to restore the multiple digital signals, and then distributes the multiple digital signals to multiple first circuits 160, such as circuit #1 to circuit #5 in Figure 7. The first circuit 160 operates according to the signals demultiplexed by the first demultiplexer 143.

[0118] Here, the first processor 150 corresponds to the plurality of first circuits 160 and is configured to control the operation of the first circuits 160, that is, the first circuits 160 operate according to signals sent by the first processor 150. The first circuits 160 may be circuits of functional elements, and may include circuits of at least one of the following functional elements: a speaker, a microphone, a sensor, a memory card, a SIM card, a vibration motor, a display screen, a touch screen, a camera module, an antenna module, a fingerprint recognition module, a charging interface (universal serial bus (USB) interface), etc., but is not limited thereto.

[0119] The first processor 150 is used to execute the application code in the memory to call the first circuit 160 to implement the corresponding function. The first processor 150 may include one or more processing modules, and different processing modules may be independent devices or integrated into one or more processors. The first processor 150 may specifically be an integrated control chip, or it may be composed of a circuit including various active and / or passive components, and the circuit is configured to perform the functions of the first processor 150 described in the embodiments of the present application.

[0120] Optionally, the first processor 150 may include multiple processing modules, each of which may control the operation of one or more first circuits 160. The first processor 150 may include various application processors (AP), central processing units (CPU), graphics processing units (GPU), or image signal processors (ISP), but is not limited thereto.

[0121] For example, the first processor 150 may include a central processing unit of a folding screen device, which may control the actions of functional elements such as a memory card.

[0122] For another example, the first processor 150 may further include a multimedia driver module that can control the actions of functional elements such as a display screen and a camera.

[0123] For another example, the first processor 150 may further include an audio driver module to control the actions of functional elements such as speakers.

[0124] In the embodiment of the present application, the first processor 150 is arranged on the first circuit board 180, multiple first circuits 160 are arranged on the second circuit board 190, and the first flexible circuit board 120 passes through the folding mechanism 113 to achieve signal conduction between the first circuit board 180 and the second circuit board 190.

[0125] At this time, the multiple digital signals to be transmitted generated by the first processor 150 are transmitted to the multiple first circuits 160 in sequence through the control device 130 (first circuit board 180), the first flexible circuit board 120, and the connecting device 140 (second circuit board 190).

[0126] Optionally, in other embodiments, multiple first circuits 160 may be set on the first circuit board 180, and the first processor 150 may be set on the second circuit board 190. At this time, the first multiplexer 133 may also multiplex the multi-channel digital signals sent by the multiple first circuits 160 and send them to the first demultiplexer 143 through the first flexible circuit board 120. The first demultiplexer 143 demultiplexes the multiplexed digital signals to restore the multi-channel digital signals, and then sends the multi-channel digital signals to the corresponding processing modules in the first processor 150.

[0127] Optionally, the first circuit 160 may be directly integrated onto the second circuit board 190 , or may be indirectly connected to the second circuit board 190 through a wire or other flexible circuit board.

[0128] As shown in FIG5 , in the embodiment of the present application, for digital signals with a transmission rate lower than a preset threshold among the multiple digital signals to be transmitted by the first processor 150 , the first multiplexer 133 may collect the signals through an oversampling mode.

[0129] Specifically, the transmission interface 132 may further include a first oversampling module 134, which is configured to collect, through oversampling, digital signals having a transmission rate lower than a preset threshold value from the multiple digital signals to be transmitted by the first processor 150, and transmit the collected data to the first multiplexer 133. Correspondingly, the signal transmission circuit 141 may further include a second oversampling module 144, which is configured to collect (also referred to as recovering or restoring) digital signals having a transmission rate lower than the preset threshold value from the multiple digital signals output by the first demultiplexer 143, and distribute the collected data to each of the first circuits 160.

[0130] According to the folding screen device provided by the embodiment of the present application, a first oversampling module 134 and a second oversampling module 144 are provided to complement each other to transmit the electrical level of the host side (Host) to the connecting device 140 in an oversampling mode, and the connecting device 140 sends it to the corresponding first circuit 160. The transparent transmission mode has no effect on the read and write drive of the first processor 150 and will not affect the normal operation of the first processor 150. In addition, the interface transparent transmission scheme is adopted to realize the acquisition of digital signals and complete the transparent transmission of data. There is no need to develop additional complex interface circuits, and the circuit structure requirements of the entire transmission link are relatively low, making the design of the signal processor simpler, thereby reducing the difficulty of signal processor development.

[0131] The preset threshold value may be determined based on the processing capability of the first multiplexer 133, and may be determined based on whether the first multiplexer 133 can achieve accurate sampling (without distortion). Optionally, the preset threshold value may be 3 to 8 megabits per second (Mbps), such as 4Mbps, 5Mbps, 5.5Mbps, 6Mbps, or 7Mbps.

[0132] For example, for low-speed signals less than 5 Mbps, data sampling can be performed in an oversampling mode by the first oversampling module 134. For high-speed signals greater than 5 Mbps, the host-side data can be collected using the interface clock and sent to the first multiplexer 133, which then performs corresponding multiplexing processing (inserting the data into the corresponding time slot according to the preset logic).

[0133] As shown in FIG5 , in the embodiment of the present application, the transmission interface 132 further includes a first interface conversion module (Adaptor_H) 135 , and the signal transmission circuit 141 further includes a second interface conversion module (Adaptor_P) 145 . The first interface conversion module 135 and the second interface conversion module 145 are used in conjunction with each other.

[0134] The first interface conversion module 135 is configured to collect digital signals with a transmission rate greater than or equal to a preset threshold from the multiple digital signals to be transmitted by the first processor 150 , and transmit the collected digital signals to the first multiplexer 133 .

[0135] The second interface conversion module 145 is configured to collect and distribute digital signals having a transmission rate greater than or equal to a preset threshold value from the multiple digital signals output by the first demultiplexer 143 .

[0136] The first interface conversion module 135 completes interface data sampling and sends the collected instructions to the first multiplexer 133. The first multiplexer 133 inserts the instructions into the corresponding time slot according to the preset logic and sends them to the first demultiplexer 143 via the first flexible circuit board 120. The first demultiplexer 143 demultiplexes the multiplexed digital signals to restore the multi-channel digital signals. The second interface conversion module 145 regenerates the corresponding interface timing from the received instructions, such as the interface timing corresponding to SDIO, RFFE, and SPI, and sends them to the corresponding first circuit 160.

[0137] Due to the processing capacity limitations of the first multiplexer 133, data acquisition using oversampling may not be possible. For example, the processing rate of the first multiplexer 133 may not be able to reach more than twice the signal transmission rate, which may easily cause signal distortion. In this case, the present application can use the first interface conversion module 135 to acquire digital signals with a higher transmission rate. On the other hand, by using an interface conversion module (e.g., an interface circuit) to acquire digital signals with a higher transmission rate, the processing capacity requirements of the first multiplexer 133 can be reduced, thereby reducing the design difficulty of the signal processor.

[0138] As shown in FIG5 , in the embodiment of the present application, the transmission interface 132 further includes a first buffer 136, which is used to buffer the digital signal collected by the first interface conversion module 135 and output it to the first multiplexer 133. The signal transmission circuit 141 further includes a second buffer 146, which is used to buffer the digital signal output by the first demultiplexer 143 and output it to the second interface conversion module 145.

[0139] Due to the limited processing power of first multiplexer 133, which may not be able to match the data processing (transmission) speed of first interface conversion module 135, the present application provides a buffer between first interface conversion module 135 and first multiplexer 133 to temporarily store data transmitted by first interface conversion module 135, thereby coordinating and buffering signals and achieving synchronized data transmission. Furthermore, by providing first buffer 136, instructions with a higher transmission rate collected by first interface conversion module 135 can be temporarily cached, reducing the processing power requirements of first multiplexer 133 and thereby simplifying the design of the signal processor.

[0140] Figure 6 is another schematic block diagram of the signal transmission principle of the foldable screen device provided in an embodiment of the present application. As shown in Figure 6, in this embodiment of the present application, compared with the embodiment shown in Figure 5 above, in this embodiment of the present application, the signal transmission circuit 141 also includes a second multiplexer 147, and the transmission interface 132 also includes a second demultiplexer 137.

[0141] The second multiplexer 147 is used to multiplex the multiple digital signals to be transmitted by the multiple first circuits 160 and send the multiplexed digital signals to the control device 130 (first circuit board 180) through the first flexible circuit board 120.

[0142] The second demultiplexer 137 is configured to demultiplex the digital signal multiplexed by the second multiplexer 147 and output the demultiplexed digital signal to the first processor 150 .

[0143] In other words, the first flexible circuit board 120 can realize bidirectional transmission of digital signals, and in either transmission direction, multiplexing technology is used to combine multiple digital signals and transmit them on one physical channel, thereby further reducing the number of physical channels required for signal transmission, that is, further reducing the size of the first flexible circuit board 120, facilitating foldable design.

[0144] At this time, similar to the first oversampling module 134 , the second oversampling module 144 is further configured to collect digital signals with a transmission rate lower than a preset threshold from the multiple digital signals to be transmitted by the first circuit 160 through oversampling mode, and transmit the digital signals to the second multiplexer 147 .

[0145] Similar to the second oversampling module 144, the first oversampling module 134 is also used to collect digital signals with a transmission rate lower than the preset threshold in the multi-channel digital signals output by the second demultiplexer 137 and send them to the first processor 150 (distributed to the various processing modules of the first processor 150).

[0146] Furthermore, similar to the first interface conversion module 135, the second interface conversion module 145 is also used to collect digital signals with a transmission rate greater than or equal to a preset threshold from the multiple digital signals to be transmitted by the first circuit 160, and cache them in the second buffer 146. The second multiplexer 147 inserts them into the corresponding time slot according to the preset logic, and the first flexible circuit board 120 sends the multiplexed digital signals to the second demultiplexer 137.

[0147] Similar to the second interface conversion module 145 , the first interface conversion module 135 is further configured to regenerate a corresponding interface timing from the instruction received from the second demultiplexer 137 , and send the timing to a corresponding processing module in the first processor 150 .

[0148] It is worth mentioning that in the embodiment of the present application, the first multiplexer 133, the first oversampling module 134, the first interface conversion module 135, the first buffer 136, and the second demultiplexer 137 are integrated together to form the transmission interface 132. That is, the above five components are equivalent to the five modules of the transmission interface 132. In other embodiments, the above five components can also be five separate components each provided on the first circuit board 180, or some (but not all) of the components can be integrated together, or one or more of the components can be integrated together with other components on the first circuit board 180. This application does not specifically limit this.

[0149] Similarly, in the embodiment of the present application, the first demultiplexer 143, the second oversampling module 144, the second interface conversion module 145, the second buffer 146, and the second multiplexer 147 are integrated together to form the signal transmission circuit 141. That is, the above five components are equivalent to the five modules of the signal transmission circuit 141. In other embodiments, the above five components can also be five separate components each provided on the second circuit board 190, or some (but not all) of the components can be integrated together, or one or more of the components can be integrated together with other components on the second circuit board 190. This application does not specifically limit this.

[0150] Figure 7 is another schematic block diagram illustrating the signal transmission principle of a foldable screen device provided in an embodiment of the present application. As shown in Figure 7, the transmission interface 132 of the control device 130 includes a first PCIE interface 138. The signal transmission circuit 141 of the connection device 140 includes a second PCIE interface 148.

[0151] The first PCIE interface 138 is used to aggregate multiple digital signals to be transmitted to obtain a system signal, and send the system signal to the connecting device 140 through the first flexible circuit board 120 .

[0152] The second PCIE interface 148 is used in conjunction with the first PCIE interface 138 . The second PCIE interface 148 is used to de-aggregate the system signal aggregated by the first PCIE interface 138 and output the de-aggregated component control signal.

[0153] FIG8 is a control method provided in an embodiment of the present application. The method may be executed by the control device 130 in FIG2 . As shown in FIG8 , the method includes:

[0154] S201: Generate a control signal.

[0155] The control signal is used to control the operation mode of the connection device.

[0156] Exemplarily, the control device 130 may generate a control signal via the processor 131 .

[0157] In a possible implementation, the control signal includes a sleep control signal, and the sleep control signal is used to control the connection device to enter a sleep mode. In the sleep mode, the connection device stops transmitting the system signal.

[0158] In a possible implementation, the control signal includes a working control signal, and the working control signal is used to control the connecting device to enter a working mode. In the working mode, the connecting device is used to transmit the system signal.

[0159] S202: Send a control signal to the connection device.

[0160] Exemplarily, the control device 130 may send the control signal to the connection device 140 via the transmission interface 132 .

[0161] FIG9 is another control method provided by an embodiment of the present application. The method may be performed by the connection device 140 in FIG2 . As shown in FIG9 , the method includes:

[0162] S901: Receive a control signal from a control device.

[0163] For example, the connection device 140 may receive a control signal from the control device via the controller 142 .

[0164] S902: Control the operation mode of the connection device according to the control signal.

[0165] For example, the controller 142 of the connection device may control the operation mode of the connection device according to the control signal.

[0166] In a possible implementation, the control device 130 may be a chip. FIG10 shows a schematic structural diagram of a chip 1000. The chip 1000 may be a chip in a control device, and includes one or more processors 1001 and an interface circuit 1002.

[0167] Optionally, the chip 1000 may further include a bus 1003 .

[0168] The processor 1001 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above memory control method can be completed by a hardware integrated logic circuit in the processor 1001 or by software instructions.

[0169] Optionally, the processor 1001 may be a general-purpose processor, a digital signal processing (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The methods and steps disclosed in the embodiments of the present application may be implemented or executed. The general-purpose processor may be a microprocessor or any conventional processor.

[0170] The interface circuit 1002 can be used to send or receive data, instructions or information. The processor 1001 can use the data, instructions or other information received by the interface circuit 1002 to process it, and can send the processing completion information through the interface circuit 1002.

[0171] Optionally, the chip also includes a memory, which may include a read-only memory and a random access memory, and provides operating instructions and data to the processor. Part of the memory may also include a non-volatile random access memory (NVRAM).

[0172] Optionally, the memory stores an executable software module or a data structure, and the processor can perform corresponding operations by calling an operation instruction stored in the memory (the operation instruction may be stored in an operating system).

[0173] Optionally, the chip can be used in a memory control device according to an embodiment of the present application. Optionally, the interface circuit 1002 can be used to output the execution result of the processor 1001. For the memory control method provided in one or more embodiments of the present application, reference can be made to the aforementioned embodiments and will not be repeated here.

[0174] It should be noted that the corresponding functions of the processor 1001 and the interface circuit 1002 can be implemented through hardware design, software design, or a combination of hardware and software, and there is no limitation here.

[0175] An embodiment of the present application further provides an electronic device, which includes the control device 130 shown in FIG. 2 and the connecting device 140 shown in FIG. 2 .

[0176] Exemplarily, the above-mentioned electronic device may be a foldable screen device.

[0177] An embodiment of the present application also provides a computer storage medium, which stores computer instructions. When the computer instructions are executed on a memory control device, the memory control device executes the above-mentioned related method steps to implement the memory control method in the above-mentioned embodiment.

[0178] An embodiment of the present application also provides a computer program product. When the computer program product is run on a computer, it enables the computer to execute the above-mentioned related steps to implement the memory control method in the above-mentioned embodiment.

[0179] Embodiments of the present application also provide a memory control device, which may be a chip, integrated circuit, component, or module. Specifically, the device may include a connected processor and a memory for storing instructions, or the device may include at least one processor for retrieving instructions from an external memory. When the device is running, the processor may execute the instructions to cause the chip to perform the memory control method described in each of the above method embodiments.

[0180] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0181] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0182] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0183] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the above units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0184] The units described above as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, and may be located in one place or distributed across multiple network units. Some or all of these units may be selected based on actual needs to achieve the purpose of this embodiment.

[0185] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0186] If the above functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the above methods of each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0187] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A control device for a connection device of a folding screen device, characterized in that: The control device comprises: a processor, located on a first circuit board corresponding to a first screen in a folding screen device, and used to generate a control signal, wherein the control signal is used to control an operation mode of a connecting device, wherein the connecting device is located on a second circuit board corresponding to a second screen in the folding screen device, and is used to transmit a system signal between the first circuit board and the second circuit board; A transmission interface is used to send the control signal to the connection device.

2. The control device according to claim 1, characterized in that: The control signal includes a sleep control signal, and the sleep control signal is used to control the connection device to enter a sleep mode. In the sleep mode, the connection device stops transmitting the system signal.

3. The control device according to claim 2, characterized in that: The processor is specifically used for: In the case where it is determined that the system signal transmission is not required between the first circuit board and the second circuit board, the sleep control signal is generated.

4. The control device according to claim 2 or 3, characterized in that: The processor is further configured to: Control the transmission interface to enter a sleep mode.

5. The control device according to any one of claims 1 to 4, characterized in that: The control signal includes a working control signal, and the working control signal is used to control the connecting device to enter a working mode. In the working mode, the connecting device is used to transmit the system signal.

6. The control device according to claim 5, characterized in that: The processor is specifically used for: In the case where it is determined that the system signal transmission is required between the first circuit board and the second circuit board, the operation control signal is generated.

7. The control device according to claim 5 or 6, characterized in that: The processor is further configured to: Control the transmission interface to enter a working mode.

8. The control device according to any one of claims 1 to 7, characterized in that: The connecting device is used to receive the system signal from the first circuit board and convert the system signal into one or more component control signals, wherein the one or more component control signals are used to control one or more functional components on the second circuit board.

9. A connection device for a folding screen device, characterized in that: The connecting device is located on the second circuit board corresponding to the second screen in the folding screen device, and includes: A signal transmission circuit, used for transmitting system signals between the first circuit board and the second circuit board in the folding screen device; The controller is used to receive a control signal from a control device and control the operation mode of the connecting device according to the control signal. The control device is located on the first circuit board.

10. The connection device according to claim 9, characterized in that The control signal includes a sleep control signal, and the sleep control signal is used to control the connection device to enter a sleep mode; The signal transmission circuit is used to stop transmitting the system signal in the sleep mode.

11. The connection device according to claim 9 or 10, characterized in that: The control signal includes a working control signal, and the working control signal is used to control the connecting device to enter a working mode; The signal transmission circuit is used to transmit the system signal in the working mode.

12. The connection device according to any one of claims 9 to 11, characterized in that: The signal transmission circuit is used to receive the system signal from the first circuit board and convert the system signal into one or more component control signals, wherein the one or more component control signals are used to control one or more functional components on the second circuit board.

13. An electronic device, characterized in that: The invention comprises the control device according to any one of claims 1 to 8 and the connecting device according to any one of claims 9 to 12.

14. A control method, characterized in that: The method comprises: Generate a control signal, the control signal is used to control the operation mode of the connection device, wherein the connection device is located on a second circuit board corresponding to the second screen in the folding screen device, and is used to transmit a system signal between the first circuit board and the second circuit board; The control signal is sent to the connection device.

15. The method according to claim 14, characterized in that The control signal includes a sleep control signal or a working control signal. The sleep control signal is used to control the connection device to enter a sleep mode, in which the connection device stops transmitting the system signal. The working control signal is used to control the connection device to enter a working mode, in which the connection device is used to transmit the system signal.

16. A control method, characterized in that: The method comprises: receiving a control signal from a control device; The operating mode of the connecting device is controlled according to the control signal, and the control device is located on the first circuit board.

17. The method according to claim 16, characterized in that The control signal includes a sleep control signal or a working control signal. The sleep control signal is used to control the connection device to enter a sleep mode, and the connection device stops transmitting the system signal in the sleep mode. The working control signal is used to control the connection device to enter a working mode, and the connection device transmits the system signal in the working mode.

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