CN114253893B - Transmission circuit, terminal device and signal transmission method - Google Patents
Transmission circuit, terminal device and signal transmission method Download PDFInfo
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- CN114253893B CN114253893B CN202011017220.7A CN202011017220A CN114253893B CN 114253893 B CN114253893 B CN 114253893B CN 202011017220 A CN202011017220 A CN 202011017220A CN 114253893 B CN114253893 B CN 114253893B
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The disclosure relates to a transmission circuit, a terminal device and a signal transmission method. The transmission circuit includes: the first transmission line is connected with the processing module and the functional module; the second transmission line is connected with the first transmission line through the functional module; the capacitor is connected between the functional module and the grounding point through the second transmission line; the signal voltage of the signal transmitted on the first transmission line is larger than the capacitance voltage of the capacitor, the capacitor is charged, and the electric energy stored by the capacitor is used for consuming work energy when data transmission is carried out on the functional module and the processing module. Through the transmission circuit, the number of wiring in the terminal equipment can be reduced, so that the size of the terminal can be reduced, and the use experience of a user is improved.
Description
Technical Field
The disclosure relates to the field of communication technologies, and in particular, to a transmission circuit, a terminal device, and a signal transmission method.
Background
The chip is generally designed based on a power line, a ground line and a communication signal line, and the control of the communication signal is more commonly controlled, for example, through a general purpose input/output port (General Purpose Input Output, GPIO), or through a mobile industry processor interface (Mobile Industry Processor Interface, MIPI), or through an I2C bus.
At least three wires are required in the above-described various communication control modes. However, with the development of communication, in the fifth generation of mobile communication technology (5th generation mobile networks,5G), the requirements for active devices are increasing, and the communication of each active device requires multiple transmission lines and multiple pairs of pins of a chip to complete transmission, so that challenges are brought to the spatial layout of the terminal, and the thinning and integration of equipment are not facilitated.
Disclosure of Invention
The disclosure provides a transmission circuit, a terminal device and a signal transmission method.
According to a first aspect of embodiments of the present disclosure, there is provided a transmission circuit comprising:
the first transmission line is connected with the processing module and the functional module;
The second transmission line is connected with the first transmission line through the functional module;
The capacitor is connected between the functional module and the grounding point through the second transmission line;
The signal voltage of the signal transmitted on the first transmission line is larger than the capacitance voltage of the capacitor, the capacitor is charged, and the electric energy stored by the capacitor is used for consuming work energy when data transmission is carried out on the functional module and the processing module.
Optionally, the transmission circuit further includes:
The control circuit is respectively connected with the processing module and the capacitor and is used for conducting the controlled switch on the second transmission line before transmitting signals on the first transmission line or disconnecting the controlled switch before transmitting signals on the first transmission line according to the transmission control instruction of the processing module, wherein the controlled switch is positioned between the capacitor and the grounding point.
Optionally, the signal transmitted on the first transmission line includes:
data signal comprising at least: a modulation signal of data to be transmitted and/or a modulation signal indicating a transmission request for data transmission;
And/or the number of the groups of groups,
And the power supply signal is used for supplying power to the capacitor through the first transmission line and the second transmission line.
Optionally, the signal transmitted on the first transmission line further includes:
and the synchronizing signal is used for synchronizing the transmission of the data signals between the processing module and the functional module.
Optionally, the synchronization signal includes:
cyclic redundancy coding sequences of predetermined data sequences.
Optionally, the data signal further includes: a transmission start signal and a transmission end signal;
The transmission start signal is used for marking the start of transmitting the modulated signal after the data to be transmitted are modulated;
The transmission termination signal is used for marking termination of transmission of the modulated signal after the data to be transmitted are modulated.
Optionally, the transmission start signal includes: a rising edge at which a signal transmitted on the first transmission line rises from a first level to a second level;
And/or the number of the groups of groups,
The transmission termination signal includes: a falling edge of the signal transmitted on the first transmission line from the second level to the first level.
Optionally, the first transmission line and the second transmission line are connected in series and have a predetermined impedance, so that the reflection coefficients of the first transmission line and the second transmission line are greater than a set value.
According to a second aspect of embodiments of the present disclosure, there is provided a terminal device, including:
A processing module;
And the functional module is connected with the processing module through the transmission circuit of the first aspect.
According to a third aspect of the embodiments of the present disclosure, there is provided a signal transmission method, including:
applied to a processing module or a functional module, comprising:
Transmitting signals on a first transmission line, wherein the first transmission line is connected between the processing module and the functional module, and when the signal value of the signals transmitted on the first transmission line is larger than the capacitance voltage of a capacitor, the processing module charges the capacitor, and the capacitor is connected between the functional module and a grounding point through a second transmission line;
And the electric energy stored by the capacitor is used for working energy consumption when data transmission is carried out on the functional module and the processing module.
Optionally, the transmitting signals on the first transmission line includes: a data signal and a power supply signal; wherein the data signal comprises at least: a modulation signal of data to be transmitted and/or a modulation signal indicating a transmission request for data transmission;
if the method is applied to the processing module, transmitting signals on the first transmission line includes:
The processing module sends a power supply signal on the first transmission line before sending a data signal on the first transmission line, wherein the power supply signal is used for charging the capacitor;
after the power supply signal is transmitted for a preset time period, the processing module transmits the data signal on the first transmission line.
Optionally, the transmitting the signal on the first transmission line includes:
And before the modulation signal of the data to be transmitted is transmitted, transmitting a synchronization signal on the first transmission line, wherein the synchronization signal is used for transmitting and synchronizing the data signal between the processing module and the functional module.
Optionally, the synchronization signal includes: cyclic redundancy coding sequences of predetermined data sequences.
Optionally, if the method is applied to the processing module, the method further includes:
The processing module sends a control instruction to a control circuit of the capacitor; the control instruction is used for conducting the controlled switch on the second transmission line before the processing module transmits signals to the functional module or disconnecting the controlled switch before the signals are transmitted on the first transmission line, wherein the controlled switch is positioned between the capacitor and the grounding point.
Optionally, the signal is transmitted on the first transmission line, including:
before the processing module transmits the data signal, the first transmission line transmits a transmission start signal indicating that the data signal starts to be transmitted;
and after the processing module finishes the data signal, a transmission termination signal which indicates that the data signal terminates transmission is sent on the first transmission line.
Optionally, the transmission start signal includes: a rising edge at which a signal transmitted on the first transmission line rises from a first level to a second level;
And/or the number of the groups of groups,
The transmission termination signal includes: a falling edge of the signal transmitted on the first transmission line from the second level to the first level.
The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects:
in an embodiment of the present disclosure, when a signal voltage of a signal transmitted on a first transmission line is greater than a capacitance voltage of a capacitor, charging the capacitor using the first transmission line and a second transmission line; based on the characteristic that the capacitor can store electric quantity, the electric quantity provided by the capacitor is utilized to realize data transmission through the first transmission line and the second transmission line. The first transmission line and the second transmission line are substantially connected to form a conductive line. Therefore, in the scheme of the disclosure, the capacitor is arranged in the transmission circuit, so that a power line is not required to be additionally arranged, the functional module is charged and discharged by utilizing the first transmission line and the second transmission line based on the electricity storage characteristic of the capacitor, the functional module and the processing module in the terminal equipment can normally communicate, the number of wires in the terminal equipment is reduced, the size of the terminal can be reduced, and the user experience is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a transmission circuit shown in an embodiment of the present disclosure.
Fig. 2 is a scheme for implementing communication between a functional module and a processing module based on an I2C bus.
Fig. 3 is a sequence diagram of a response mechanism based on data transmission in an I2C bus communication scheme.
Fig. 4 is an exemplary diagram of a data signal transmission in an embodiment of the present disclosure.
Fig. 5 is an equivalent circuit diagram of a transmission circuit in an embodiment of the present disclosure.
Fig. 6 is a diagram illustrating an exemplary configuration of a micro control unit in communication with a plurality of sensors in an embodiment of the disclosure.
Fig. 7 is a diagram illustrating an exemplary signal transmission method according to an embodiment of the disclosure.
Fig. 8 is a block diagram of a terminal shown in an embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.
Fig. 1 is a transmission circuit shown in an embodiment of the present disclosure, and as shown in fig. 1, the transmission circuit includes:
a first transmission line 101 connected to the processing module and the functional module;
a second transmission line 102 connected to the first transmission line 101 through the functional module;
A capacitor 103 connected between the functional module and a ground point through the second transmission line 102;
The signal voltage of the signal transmitted on the first transmission line 101 is greater than the capacitance voltage of the capacitor 103, the capacitor 103 is charged, and the electric energy stored in the capacitor 103 is used for consuming working energy when data transmission is performed to the functional module and the processing module.
In an embodiment of the present disclosure, the transmission circuit may be a circuit applied in the terminal device. The terminal equipment comprises a processing module and a functional module. The processing module can be a central processing unit (Central Processing Unit, CPU) or a micro control unit (Microcontroller Unit, MCU). The functional module may be an active device capable of performing a certain function, such as a radio frequency switch, a Tuner (Tuner), a charged erasable programmable read-only memory (ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY, EEPROM), a temperature sensor, an infrared sensor, or the like. In the embodiment of the disclosure, communication between the processing module and the functional module is realized through a transmission circuit.
The transmission circuit includes a first transmission line 101, a second transmission line 102, and a capacitor 103. As shown in fig. 1, a first transmission line 101 connects a processing module and a functional module; the second transmission line 102 is connected with the first transmission line 101 through a functional module; the capacitor 103 is connected between the functional module and the ground point through the second transmission line 102. Based on the above connection relationship, when the signal voltage of the signal transmitted on the first transmission line 101 is greater than the capacitance voltage of the capacitor 103, the capacitor 103 charges, and it should be noted that the power source for charging the capacitor 103 is the processing module. The electric energy stored in the capacitor 103 can be used for data transmission between the functional module and the processing module.
It should be noted that, in the embodiment of the present disclosure, the data transmission between the functional module and the processing module is bidirectional, and the data transmission between the functional module and the processing module includes: the processing module is used as a data transmitting end for transmitting data, and the functional module is used as a data receiving end for receiving data; the system also comprises a function module which is used as a data sending end to send data, and a processing module which is used as a data receiving end to receive the data.
Fig. 2 IS a scheme for implementing communication between a functional module and a processing module based on an I2C bus, and it can be seen from fig. 2 that if the I2C bus IS used for communication, the functional module (ADT 75/SC16IS 740) needs to be connected to at least four wires, namely, a data transmission line (SDA), a clock synchronization line (SCL), a power line (VDD) and a ground line (GND).
In the embodiment of the disclosure, when the signal voltage of the signal transmitted on the first transmission line 101 is greater than the capacitance voltage of the capacitor 103, the capacitor 103 is charged by using the first transmission line 101 and the second transmission line 102; and based on the characteristic that the capacitor 103 can store electric quantity, data transmission is realized through the first transmission line 101 and the second transmission line 102 by utilizing the electric quantity provided by the capacitor 103. Therefore, in the scheme of the disclosure, the capacitor 103 is arranged in the transmission circuit, so that no additional power line is required, the functional module is charged and discharged based on the electricity storage characteristic of the capacitor 103, the functional module and the processing module in the terminal equipment can normally communicate by utilizing the first transmission line 101 and the second transmission line 102, the number of wires in the terminal equipment is reduced, the size of the terminal can be reduced, and the user experience is improved.
In one embodiment, the transmission circuit further comprises:
The control circuit 104 is respectively connected with the processing module and the capacitor 103, and is configured to turn on the controlled switch on the second transmission line before transmitting the signal on the first transmission line or turn off the controlled switch before transmitting the signal on the first transmission line according to a transmission control instruction of the processing module, where the controlled switch is located between the capacitor and the ground point.
In this embodiment, the transmission circuit further includes a control circuit 104 connected to the processing module and the capacitor 103, respectively. The control circuit 104 is used to control the on or off of a controlled switch, which is located between the capacitor 103 and the ground. Due to the amount of power stored by the capacitor, which will automatically discharge when the circuit in which it is placed is turned on, in order to reduce the discharge of the capacitor 103, a controlled switch is provided on the second transmission line, which controlled switch includes, but is not limited to, at least one mos transistor or triode. If a certain amount of electricity is stored in the capacitor 103, the second transmission line 102 may be disconnected when the data transmission on the first transmission line 101 is not needed, so that the capacitor 103 is disconnected from the ground, and the capacitor 103 is prevented from discharging to the ground.
For example, during the signal transmission, the capacitor 103 is charged by a high level in the data transmission, at this time, the capacitor 103 stores a part of electric quantity, after the signal transmission is finished, the controlled switch is turned off, the electric quantity of the capacitor 103 is remained in the capacitor, and during the next signal transmission, the electric quantity stored in the capacitor 103 is directly used for providing the function module without charging the capacitor 103, so that the communication rate between the processing module and the function module is improved, and the communication delay is reduced.
In one embodiment, the signal transmitted on the first transmission line includes:
data signal comprising at least: a modulation signal of data to be transmitted and/or a modulation signal indicating a transmission request for data transmission;
And/or the number of the groups of groups,
And the power supply signal is used for supplying power to the capacitor through the first transmission line and the second transmission line.
In an embodiment of the present disclosure, the signal transmitted on the first transmission line 101 includes a data signal. The data signal may include a modulated signal of data to be transmitted, where the data to be transmitted refers to data interacted between the processing module and the functional module, and the modulated signal of the data to be transmitted is a coded digital signal. The data signal may further comprise a modulated signal indicating a transmission request for data transmission, the transmission request indicating that the data transmission comprises a transmission request indicating that the data transmission starts and/or a transmission request indicating that the data transmission ends.
In addition, the signal transmitted on the first transmission line 101 may further include a power supply signal for supplying power to the capacitor 103 through the first transmission line 101 and the second transmission line 102.
It should be noted that, in the embodiment of the present disclosure, when the signal voltage of the signal transmitted on the first transmission line 101 is greater than the capacitance voltage of the capacitor 103, power is supplied to the capacitor 103 through the first transmission line 101 and the second transmission line 102, and the power supply signal is transmitted on the first transmission line 101; when the signal voltage of the signal transmitted on the first transmission line 101 is less than or equal to the capacitance voltage of the capacitor 103, the data signal is transmitted on the first transmission line 101.
In one embodiment, the signal transmitted on the first transmission line further comprises:
and the synchronizing signal is used for synchronizing the transmission of the data signals between the processing module and the functional module.
In this embodiment, the signal transmitted on the first transmission line 101 further includes a synchronization signal, where the synchronization signal is used for data synchronization when transmitting the data signal between the processing module and the functional module, so as to improve the accuracy when transmitting the data.
In one scheme based on I2C bus communication, both I2C data and address transfers are responsive. The response includes both "Acknowledgement (ACK)" and "non-acknowledgement (NACK)" signals. When the device (a host or a slave) receives one byte of data or an address transmitted by the I2C as a data receiving end, if the other party is expected to continuously send the data, a response signal needs to be sent to the other party, and the sender can continuously send the next data; if the receiving end wants to end the data transmission, the receiving end sends a non-response signal to the opposite side, and the sending end generates a stop signal after receiving the signal to end the signal transmission. The device may be a processing module or a functional module of the present disclosure. When the host is a processing module, the slave is a functional module; otherwise, when the host is a functional module, the slave is a processing module.
Fig. 3 is a sequence diagram of a response mechanism based on data transmission in an I2C bus communication scheme. As shown in fig. 3, in the data transmission process, after the receiving party receives one byte of data or address based on the synchronization signal of the clock synchronization line (SCL), an "acknowledgement" or "non-acknowledgement" signal is fed back to the sending party to inform the sending party that the data reception is successful and whether the sending of the data needs to be continued.
In the embodiment of the present application, a synchronization signal may be transmitted before a data signal is transmitted, if there are multiple data signals, one synchronization signal may be transmitted before multiple data signals, and then these data signals may be continuously transmitted on the first transmission line 101 in the time domain, as a functional module or a processing module of the receiving end, locate the data signals according to the positions of the synchronization signals, and distinguish different data signals, so that data transmission is not performed without performing acknowledgement of ACK and NACK.
It will be appreciated that the I2C bus based communication scheme requires the clock synchronization line to independently transmit the synchronization signal for the receiver to feedback the signal. In the application, the first transmission line is used for transmitting the synchronous signal without independently setting a clock synchronous line, so that the number of wiring in the terminal equipment can be further reduced, and the size of the terminal can be reduced.
In one embodiment, the synchronization signal may also be a signal inserted at a fixed location in the transmission data, and the value of the synchronization signal has been predetermined by the transmitting end and the receiving end. For example, the transmitting end inserts a synchronizing signal in the 4 th bit of the data to be transmitted, and after the receiving end decodes the data, the transmitting end determines whether the synchronizing signal of the 4 th bit is a default value, if so, the transmitting end indicates that the data transmission synchronization is successful; if the synchronization signal of the 4 th bit is not the default value, the data transmission synchronization failure is indicated.
In another embodiment, the synchronization signal includes:
cyclic redundancy coding sequences of predetermined data sequences.
In this embodiment, the synchronization signal is a cyclic redundancy coded sequence of the predetermined data sequence. Wherein the predetermined data sequence comprises a sequence formed by a modulation signal of data to be transmitted and further comprises a predetermined check sequence. The cyclic redundancy coding sequence is a fixed bit check code generated based on a cyclic redundancy check (Cyclic Redundancy Check, CRC). For example, assuming that a sequence formed by a modulated signal of data to be transmitted is denoted as M (X) and a predetermined check sequence is G (X), the remainder of M (X) and G (X) can be used as a cyclic redundancy code sequence.
When the synchronization signal is a cyclic redundancy coding sequence, the cyclic redundancy coding sequence can be added at the tail of the modulation signal of the data to be transmitted by the data transmitting end and transmitted to the data receiving end. After the data receiving end receives the data, the received data is decoded to determine whether the data synchronization is successful. For example, the data receiving end divides the received data with a predetermined check sequence G (X), and if the data is divisible (the remainder is 0), it indicates that the data synchronization is successful.
It will be appreciated that as shown in fig. 3 above, the communication manner based on the I2C bus adopts a response mechanism, and the sender and the receiver need to confirm whether the data is successfully synchronized. In this embodiment, the CRC check mode is adopted, so that the communication mode is changed, and the check of whether the data synchronization is successful or not is implemented while the data is transmitted, so that the process of back and forth confirmation is omitted, and the communication efficiency can be improved.
In one embodiment, the data signal further comprises: a transmission start signal and a transmission end signal;
The transmission start signal is used for marking the start of transmitting the modulated signal after the data to be transmitted are modulated;
The transmission termination signal is used for marking termination of transmission of the modulated signal after the data to be transmitted are modulated.
As described above, the data signal includes a modulation signal indicating a transmission request for data transmission. The adjustment signal indicating the transmission request for the data transmission may include a transmission start signal for marking the start of transmission of the modulated signal modulated with the data to be transmitted, and may further include a transmission end signal for marking the end of transmission of the modulated signal modulated with the data to be transmitted.
It will be appreciated that in this embodiment, the data signal transmitted on the first transmission line 101 further includes a transmission start signal and a transmission end signal, so that the data receiver can determine whether the data transmission is ended or not based on the signals, and thus can improve the communication efficiency.
In one embodiment, the transmission start signal includes: a rising edge at which a signal transmitted on the first transmission line rises from a first level to a second level;
And/or the number of the groups of groups,
The transmission termination signal includes: a falling edge of the signal transmitted on the first transmission line from the second level to the first level.
In this embodiment, the second level is greater than the first level. When the rising edge of the signal transmitted on the first transmission line rises from the first level to the second level, the signal is a transmission start signal for marking the beginning of transmitting the modulated signal after the data to be transmitted is modulated; and when the signal transmitted on the first transmission line falls from the second level to the falling edge of the first level, it is indicated that the signal is a transmission termination signal indicating termination of transmission of the modulated signal after modulation of the data to be transmitted.
Fig. 4 is an exemplary diagram of data signal transmission in the embodiment of the disclosure, as shown in fig. 4, data to be transmitted is sent after being encoded by a 64-bit CRC encoding sequence (CRC 64) at a sending end, a receiving end determines that data starts to be transmitted according to a rising edge (S1) of a received waveform, and determines that data transmission ends according to a falling edge (S2) of the received waveform. After the data transmission is finished, the receiving end adopts CRC64 to check whether the received data is the original data to be transmitted.
In one embodiment, the first transmission line and the second transmission line have a predetermined impedance after being connected in series, such that the reflection coefficients of the first transmission line and the second transmission line are greater than a set value.
In this embodiment, the first transmission line 101 and the second transmission line 102 are connected in series and have a predetermined impedance, so that the reflection coefficient of the first transmission line 101 and the second transmission line 102 is greater than a set value, so that the capacity of the capacitor 103 is sufficiently large, and the energy stored in the capacitor can provide sufficient electric quantity for the functional module to excite the functional module to work.
Fig. 5 is an equivalent circuit diagram of a transmission circuit in the embodiment of the disclosure, as shown in fig. 5, the capacitor 103 is connected to the functional module (Z) through the second transmission line 102, and the functional module is connected to the processing module (processing module is not shown in fig. 5) through the first transmission line 101. Wherein the combined impedance of the first transmission line 101 and the second transmission line 102 is Z0, so that the reflection coefficient of the first transmission line 101 and the second transmission line 102 is greater than the set value 2.
The impedance of the first transmission line 101 and the second transmission line 102 is related to the material, thickness, and line width of the selected line. The present disclosure is not limited to specific structural parameters of the first transmission line 101 and the second transmission line 102 as long as a predetermined impedance value is satisfied.
Fig. 6 is a diagram illustrating an exemplary configuration of a micro control unit in communication with a plurality of sensors in an embodiment of the disclosure. As shown in fig. 6, four sensors are connected to the micro control unit, and communication is performed between the micro control unit and each sensor by using the aforementioned transmission circuit. It should be noted that, the micro control unit is the processing module of the present disclosure, and each sensor is the functional module of the present disclosure. The micro control unit is communicated with each sensor by adopting a time-sharing communication mechanism, namely, the micro control unit is communicated with only one sensor in a time period, so that the confusion of data in the communication process is reduced.
Fig. 7 is an exemplary diagram of a signal transmission method in an embodiment of the disclosure, where the method is applied to a processing module or a functional module in a terminal device, as shown in fig. 7, and includes the following steps:
S11, transmitting signals on a first transmission line, wherein the first transmission line is connected between the processing module and the functional module, and when the signal value of the signals transmitted on the first transmission line is larger than the capacitance voltage of a capacitor, the processing module charges the capacitor, and the capacitor is connected between the functional module and a grounding point through a second transmission line;
And the electric energy stored by the capacitor is used for working energy consumption when data transmission is carried out on the functional module and the processing module.
In an embodiment of the present disclosure, the signal transmission method is applied to communication between the processing module and the functional module. The first transmission line transmission signal comprises a signal sent by the processing module as a data sending end, and the functional module as a signal received by the data receiving end; the system also comprises a functional module which is used as a data transmitting end to transmit signals, and a processing module which is used as a data receiving end to receive signals.
In this embodiment, when the signal voltage of the signal transmitted on the first transmission line is greater than the capacitor voltage of the capacitor, the processing module is used to charge the capacitor, and the electric energy stored in the capacitor can be used for working energy consumption during data transmission between the functional module and the processing module. Therefore, the signal transmission method is based on the electricity storage characteristic of the capacitor, so that the functional module and the processing module can normally communicate without additionally arranging a power line, the number of wiring in the terminal equipment is reduced, the size of the terminal can be reduced, and the use experience of a user is improved.
In one embodiment, the transmitting signals on the first transmission line includes: a data signal and a power supply signal; wherein the data signal comprises at least: a modulation signal of data to be transmitted and/or a modulation signal indicating a transmission request for data transmission;
if the method is applied to the processing module, transmitting signals on the first transmission line includes:
The processing module sends a power supply signal on the first transmission line before sending a data signal on the first transmission line, wherein the power supply signal is used for charging the capacitor;
after the power supply signal is transmitted for a preset time period, the processing module transmits the data signal on the first transmission line.
In this embodiment, the transmission signals on the first transmission line include a data signal and a power supply signal. When the signal transmission method is applied to the processing module, the processing module sends a power supply signal on the first transmission line to charge the capacitor, and after the processing module sends the power supply signal for a preset period of time, the electric quantity of the capacitor is enough for the functional module to work, so that the processing module transmits a data signal on the first transmission line.
In one embodiment, the transmitting the signal on the first transmission line includes:
And before the modulation signal of the data to be transmitted is transmitted, transmitting a synchronization signal on the first transmission line, wherein the synchronization signal is used for transmitting and synchronizing the data signal between the processing module and the functional module.
In this embodiment, the signal transmitted on the first transmission line 101 further includes a synchronization signal, where the synchronization signal is used for data synchronization when transmitting the data signal between the processing module and the functional module, so as to improve the accuracy when transmitting the data.
The application can transmit one synchronizing signal before a plurality of data signals if the synchronizing signal is transmitted before the data signals, so that the data signals can be continuously transmitted on the first transmission line 101 in the time domain as a function module or a processing module of a receiving end, the data signals are positioned according to the positions of the synchronizing signals, and different data signals are distinguished, thus, the data transmission is not performed by acknowledgement of ACK and NACK.
Compared with a communication mode based on an I2C bus, the application needs a mode that the clock synchronous line independently transmits the synchronous signal to enable a receiver to feed back the signal.
In one embodiment, the synchronization signal includes: cyclic redundancy coding sequences of predetermined data sequences.
In this embodiment, the synchronization signal is a cyclic redundancy coded sequence of a predetermined data sequence, wherein the predetermined data sequence comprises a sequence formed by a modulated signal of data to be transmitted, and further comprises a predetermined check sequence. The synchronization signal may be that the data transmitting end adds a cyclic redundancy coding sequence at the tail of the modulation signal of the data to be transmitted to the data receiving end. After the data receiving end receives the data, the received data is decoded to determine whether the data synchronization is successful.
With respect to the I2C bus based reply mechanism, the sender and receiver need to acknowledge back whether the data synchronization was successful. In this embodiment, the CRC check mode is adopted, so that the communication mode is changed, and the check of whether the data synchronization is successful or not is implemented while the data is transmitted, so that the process of back and forth confirmation is omitted, and the communication efficiency can be improved.
In one embodiment, if the method is applied to a processing module, the method further comprises:
The processing module sends a control instruction to a control circuit of the capacitor; the control instruction is used for conducting the controlled switch on the second transmission line before the processing module transmits signals to the functional module or disconnecting the controlled switch before the signals are transmitted on the first transmission line, wherein the controlled switch is positioned between the capacitor and the grounding point.
In this embodiment, the controlled switch is located between the capacitance and ground. Because of the amount of electricity stored by the capacitor, the capacitor will automatically discharge when the circuit in which the capacitor is positioned is conducted, and in order to reduce the discharge of the capacitor, a controlled switch is arranged on the second transmission line. For example, when the signal transmission is performed, the capacitor is charged through a high level in the data transmission, at this time, the capacitor stores a part of electric quantity, after the signal transmission is finished, the controlled switch is turned off, the electric quantity of the capacitor can be remained in the capacitor, and when the signal transmission is performed next time, the capacitor is not required to be charged first, the electric quantity stored in the capacitor can be directly used for providing the function module, so that the communication rate between the processing module and the function module is improved, and the communication delay is reduced.
In one embodiment, the first transmission line transmits signals, including:
before the processing module transmits the data signal, the first transmission line transmits a transmission start signal indicating that the data signal starts to be transmitted;
and after the processing module finishes the data signal, a transmission termination signal which indicates that the data signal terminates transmission is sent on the first transmission line.
As described above, the data signal includes a modulation signal indicating a transmission request for data transmission. The adjustment signal indicating the transmission request for the data transmission may include a transmission start signal for marking the start of transmission of the modulated signal modulated with the data to be transmitted, and may further include a transmission end signal for marking the end of transmission of the modulated signal modulated with the data to be transmitted.
It will be appreciated that in this embodiment, the data signal transmitted on the first transmission line further includes a transmission start signal and a transmission end signal, so that the data receiver can determine whether the data transmission is ended according to the signals, and thus can improve the communication efficiency.
In one embodiment, the transmission start signal includes: a rising edge at which a signal transmitted on the first transmission line rises from a first level to a second level;
And/or the number of the groups of groups,
The transmission termination signal includes: a falling edge of the signal transmitted on the first transmission line from the second level to the first level.
In this embodiment, the second level is greater than the first level. When the rising edge of the signal transmitted on the first transmission line rises from the first level to the second level, the signal is a transmission start signal for marking the beginning of transmitting the modulated signal after the data to be transmitted is modulated; and when the signal transmitted on the first transmission line falls from the second level to the falling edge of the first level, it is indicated that the signal is a transmission termination signal indicating termination of transmission of the modulated signal after modulation of the data to be transmitted.
Fig. 8 is a block diagram illustrating a terminal apparatus 800 according to an exemplary embodiment. For example, the device 800 may be a telephone, a computer, etc.
Referring to fig. 8, apparatus 800 may include one or more of the following components: a processing component (processing module) 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component (function) 814, and a communication component 816. Wherein the processing component 802 and the sensor component 814 communicate based on the transmission circuitry shown in fig. 1.
The processing component 802 generally controls overall operation of the apparatus 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component 802 can include one or more modules that facilitate interactions between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.
The memory 804 is configured to store various types of data to support operations at the device 800. Examples of such data include instructions for any application or method operating on the device 800, contact data, phonebook data, messages, pictures, videos, and the like. The memory 804 may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.
The power supply component 806 provides power to the various components of the device 800. The power components 806 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the device 800.
The multimedia component 808 includes a screen between the device 800 and the user that provides an output interface. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or slide action, but also the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front camera and/or a rear camera. The front camera and/or the rear camera may receive external multimedia data when the device 800 is in an operational mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.
The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a Microphone (MIC) configured to receive external audio signals when the device 800 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 804 or transmitted via the communication component 816. In some embodiments, audio component 810 further includes a speaker for outputting audio signals.
The I/O interface 812 provides an interface between the processing component 802 and peripheral interface modules, which may be a keyboard, click wheel, buttons, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.
The sensor assembly 814 includes one or more sensors for providing status assessment of various aspects of the apparatus 800. For example, the sensor assembly 814 may detect an on/off state of the device 800, a relative positioning of the components, such as a display and keypad of the apparatus 800, the sensor assembly 814 may also detect a change in position of the apparatus 800 or one component of the apparatus 800, the presence or absence of user contact with the apparatus 800, an orientation or acceleration/deceleration of the apparatus 800, and a change in temperature of the apparatus 800. The sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 816 is configured to facilitate communication between the apparatus 800 and other devices, either in a wired or wireless manner. The device 800 may access a wireless network based on a communication standard, such as Wi-Fi,2G, or 3G, or a combination thereof. In one exemplary embodiment, the communication component 816 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component 816 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the apparatus 800 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements for executing the methods described above.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any adaptations, uses, or adaptations of the disclosure following the general principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (14)
1. A transmission circuit for use in a user terminal, comprising:
the first transmission line is connected with the processing module and the functional module;
The second transmission line is connected with the first transmission line through the functional module;
The capacitor is connected between the functional module and the grounding point through the second transmission line;
The signal voltage of the signal transmitted on the first transmission line is larger than the capacitance voltage of the capacitor, the capacitor is charged, and the electric energy stored by the capacitor is used for consuming work energy when data transmission is carried out on the functional module and the processing module;
The control circuit is respectively connected with the processing module and the capacitor and is used for conducting the controlled switch on the second transmission line before transmitting signals on the first transmission line or disconnecting the controlled switch before transmitting signals on the first transmission line according to the transmission control instruction of the processing module, wherein the controlled switch is positioned between the capacitor and the grounding point.
2. The transmission circuit of claim 1, wherein the signal transmitted on the first transmission line comprises:
data signal comprising at least: a modulation signal of data to be transmitted and/or a modulation signal indicating a transmission request for data transmission;
And/or the number of the groups of groups,
And the power supply signal is used for supplying power to the capacitor through the first transmission line and the second transmission line.
3. The transmission circuit of claim 2, wherein the signal transmitted on the first transmission line further comprises:
and the synchronizing signal is used for synchronizing the transmission of the data signals between the processing module and the functional module.
4. A transmission circuit according to claim 3, wherein the synchronization signal comprises:
cyclic redundancy coding sequences of predetermined data sequences.
5. The transmission circuit of claim 4, wherein the data signal further comprises: a transmission start signal and a transmission end signal;
The transmission start signal is used for marking the start of transmitting the modulated signal after the data to be transmitted are modulated;
The transmission termination signal is used for marking termination of transmission of the modulated signal after the data to be transmitted are modulated.
6. The transmission circuit of claim 5, wherein the transmission start signal comprises: a rising edge at which a signal transmitted on the first transmission line rises from a first level to a second level;
And/or the number of the groups of groups,
The transmission termination signal includes: a falling edge of the signal transmitted on the first transmission line from the second level to the first level.
7. The transmission circuit of claim 1, wherein the first transmission line and the second transmission line have a predetermined impedance after being connected in series such that the reflection coefficients of the first transmission line and the second transmission line are greater than a set value.
8. A terminal device, comprising:
A processing module;
A functional module connected to the processing module by the transmission circuit provided in any one of claims 1 to 7.
9. The signal transmission method is characterized in that the processing module applied to the user terminal comprises the following steps:
Transmitting signals on a first transmission line, wherein the first transmission line is connected between the processing module and the functional module, and when the signal value of the signals transmitted on the first transmission line is larger than the capacitance voltage of a capacitor, the processing module charges the capacitor, and the capacitor is connected between the functional module and a grounding point through a second transmission line;
The electric energy stored by the capacitor is used for working energy consumption when data transmission is carried out on the functional module and the processing module;
The processing module sends a control instruction to a control circuit of the capacitor; the control instruction is used for conducting the controlled switch on the second transmission line before the processing module transmits signals to the functional module or disconnecting the controlled switch before the signals are transmitted on the first transmission line, wherein the controlled switch is positioned between the capacitor and the grounding point.
10. The method of claim 9, wherein transmitting signals on the first transmission line comprises: a data signal and a power supply signal; wherein the data signal comprises at least: a modulation signal of data to be transmitted and/or a modulation signal indicating a transmission request for data transmission;
if the method is applied to the processing module, transmitting signals on the first transmission line includes:
The processing module sends a power supply signal on the first transmission line before sending a data signal on the first transmission line, wherein the power supply signal is used for charging the capacitor;
after the power supply signal is transmitted for a preset time period, the processing module transmits the data signal on the first transmission line.
11. The method of claim 10, wherein transmitting the signal on the first transmission line comprises:
And before the modulation signal of the data to be transmitted is transmitted, transmitting a synchronization signal on the first transmission line, wherein the synchronization signal is used for transmitting and synchronizing the data signal between the processing module and the functional module.
12. The method of claim 11, wherein the synchronization signal comprises: cyclic redundancy coding sequences of predetermined data sequences.
13. The method according to claim 9 or 10, wherein transmitting signals on the first transmission line comprises:
before the processing module transmits the data signal, the first transmission line transmits a transmission start signal indicating that the data signal starts to be transmitted;
and after the processing module finishes the data signal, a transmission termination signal which indicates that the data signal terminates transmission is sent on the first transmission line.
14. The method of claim 13, wherein the transmission initiation signal comprises: a rising edge at which a signal transmitted on the first transmission line rises from a first level to a second level;
And/or the number of the groups of groups,
The transmission termination signal includes: a falling edge of the signal transmitted on the first transmission line from the second level to the first level.
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| US6070114A (en) * | 1996-10-18 | 2000-05-30 | Telefunken Temic Microelectronic Gmbh | Data transmission system |
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| JP2005045729A (en) * | 2003-07-25 | 2005-02-17 | Matsushita Electric Works Ltd | Communication system |
| TWI429165B (en) * | 2011-02-01 | 2014-03-01 | Fu Da Tong Technology Co Ltd | Method of data transmission in high power |
| CN102684314B (en) * | 2011-03-15 | 2014-09-10 | 富达通科技股份有限公司 | Method for transmitting data in inductive power supply with high power |
| CN102693205B (en) * | 2012-05-11 | 2015-03-18 | 杭州硅星科技有限公司 | Data transmission, power supply device, data transmission and power supply method thereof |
| FR3036513B1 (en) * | 2015-05-19 | 2018-06-08 | Stmicroelectronics (Rousset) Sas | COMMUNICATION METHOD ON A BIFILAR BUS |
| US10248584B2 (en) * | 2016-04-01 | 2019-04-02 | Microsoft Technology Licensing, Llc | Data transfer between host and peripheral devices |
| CN207473599U (en) * | 2017-12-04 | 2018-06-08 | 山东高云半导体科技有限公司 | A kind of I2C bus control interfaces circuit |
| WO2019138665A1 (en) * | 2018-01-11 | 2019-07-18 | ソニーセミコンダクタソリューションズ株式会社 | Communication system and communication device |
| CA3010261A1 (en) * | 2018-06-29 | 2019-12-29 | Mitchell B. Miller | A system and method utilizing deflection conversion for increasing the energy efficiency of a circuit and time rate while charging an electrical storage device, different circuit configurations composing a group termed deflection converters, where this invention utilizes a current loop and or feedback |
| CN111541443B (en) * | 2020-04-14 | 2023-08-22 | 北京旋极信息技术股份有限公司 | signal transmission circuit |
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| US6070114A (en) * | 1996-10-18 | 2000-05-30 | Telefunken Temic Microelectronic Gmbh | Data transmission system |
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