CN113035119A - LED driving device and control system of hand-held bidirectional transmission device - Google Patents
LED driving device and control system of hand-held bidirectional transmission device Download PDFInfo
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- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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Abstract
The invention discloses an LED driving device and a control system of a handheld bidirectional transmission device, wherein the handheld bidirectional transmission device comprises a front-stage interface module, a rear-stage interface module, an intelligent transmission direction scanning monitoring module, a data control module and an LED output driving circuit, wherein the input end of the intelligent transmission direction scanning monitoring module is connected with the front-stage interface module and the rear-stage interface module, the output end of the intelligent transmission direction scanning monitoring module is connected with the data control module, and the data control module outputs signals to the LED output driving circuit.
Description
The technical field is as follows:
the invention relates to the technical field of LEDs, in particular to an LED driving device and a control system of a handheld bidirectional transmission device.
Background art:
at first, most of the LED cascade control chips adopt a clock line and a data line to transmit data to control the color and brightness of the LED on the display screen, and gradually change to only one data line for transmission control. However, by adopting the clock line and the data line or independently adopting the data line to transmit data, once the transmission lines between the chips are connected incorrectly, other normal points cannot work normally, and the finished product has no function, which brings difficulty to product maintenance. Therefore, an LED control chip using two identical data signal lines for transmission appears, but using two identical data signal lines as data transmission lines requires adding a port, which is not only high in production cost, but also damages three adjacent LEDs at the same time, and the following circuits cannot be used normally.
The invention content is as follows:
in view of the above problems, the technical problem to be solved by the present invention is to provide an LED driving device and a control system for a handshake type bidirectional transmission device, so as to reduce the problem that an LED using a conventional method for transmitting signals is prone to failure.
The invention discloses a hand-held bidirectional transmission device, which comprises a front-stage interface module, a rear-stage interface module, an intelligent transmission direction scanning monitoring module, a data control module and an LED output driving circuit, wherein the input end of the intelligent transmission direction scanning monitoring module is connected with the front-stage interface module and the rear-stage interface module, the output end of the intelligent transmission direction scanning monitoring module is connected with the data control module, and the data control module outputs signals to the LED output driving circuit;
the intelligent transmission direction scanning monitoring module returns a confirmation code and performs data code processing when receiving an input signal of a previous-stage interface module; the intelligent transmission direction scanning monitoring module transmits an input signal data code to the data control module, and the data control module outputs a signal to control the LED output driving circuit; when the intelligent transmission direction scanning monitoring module cannot receive the input signal of the previous stage interface module after a period of time, an error code is transmitted to the previous stage and the next stage, the transmission direction scanning monitoring module switches the switching signal, the switching signal is input into the intelligent transmission direction scanning monitoring module by the next stage interface module, the signal is input into the data control module by the intelligent transmission direction scanning monitoring module, and the signal is output to the LED output driving circuit by the data control module; similarly, when the input signal of the next stage is abnormal, the previous stage can be switched to, so that the intelligent interpretation is carried out, and the single-point bidirectional control is achieved.
Preferably, the intelligent transmission direction scanning supervision module comprises a signal receiving scanning unit and a data selector, the signal receiving scanning unit controls the data selector, the previous-stage interface module and the data control module are respectively and electrically connected with the signal receiving scanning unit, the previous-stage interface module and the next-stage interface module are respectively and electrically connected with the data selector, the data selector is electrically connected with the data control module, and the data selector inputs signals to the data control module;
when the intelligent transmission direction scanning supervision module can receive an input signal of a previous-stage interface module, the signal of the previous-stage interface module is input into the signal receiving scanning unit, and the previous-stage interface module inputs the signal to the data selector; when the intelligent transmission direction scanning supervision module cannot receive the input signal of the previous-stage interface module, the input signal of the next-stage interface module is connected to the data selector, and the data selector inputs the signal to the data control module.
Preferably, the signal receiving and scanning unit is electrically connected with a high-output impedance circuit driver;
when the intelligent transmission direction scanning monitoring module cannot receive the input signal of the previous stage interface module, the signal receiving and scanning unit controls the high output impedance circuit driver to be communicated with the high output impedance circuit.
Preferably, the data selector includes an inverter;
when the intelligent transmission direction scanning supervision module can receive an input signal of a previous-stage interface module, the previous-stage interface module inputs the signal to the signal receiving and scanning unit, and an output signal of the signal receiving and scanning unit is output to the next-stage interface module through the data control module;
when the transmission direction scanning supervision module cannot receive an input signal of a previous-stage interface module, the next-stage interface module inputs the signal to the signal receiving and scanning unit, and the signal of the signal receiving and scanning unit is output to the previous-stage interface module;
when the intelligent transmission direction scanning monitoring module can receive an input signal of a next-stage interface module, the previous-stage interface module is in an output state;
when the intelligent transmission direction scanning monitoring module cannot receive an input signal of a previous-stage interface module, the previous-stage interface module is in an input state; when the previous-stage interface module is in an output state, a previous-stage input signal of the previous-stage interface module and a next-stage output signal of the previous-stage interface module are output; and when the previous-stage interface module is in an output state, the next-stage interface module inputs signals.
Preferably, the intelligent transmission direction scanning and monitoring module further comprises a previous stage switch unit and a next stage switch unit, the data control module is electrically connected with the previous stage switch unit and the next stage switch unit respectively, the previous stage switch unit is electrically connected with the previous stage interface module, the next stage switch unit is electrically connected with the next stage interface module, and the previous stage switch unit is further electrically connected with the signal receiving and scanning unit; the latter-stage switch unit is also electrically connected with the phase inverter, and the phase inverter is also electrically connected with the signal receiving scanning unit;
when the data control module can receive an input signal of the previous-stage interface module, the signal receiving and scanning unit controls the previous-stage switch unit to be in an off state and controls the next-stage switch unit to be in a on state, so that the data control module outputs a signal to the next-stage interface module;
when the data control module cannot receive the input signal of the previous-stage interface module, the signal receiving and scanning unit controls the previous-stage switch unit to be in an on state and controls the next-stage switch unit to be in an off state, so that the data control module receives the input signal of the next-stage interface module.
The LED driving device comprises the hand-held bidirectional transmission device, and the LED output driving circuit is a driving LED device output unit and is used for outputting signals to drive an LED.
The invention discloses an LED control system, which comprises a front-stage controller and LED driving devices, wherein N LED driving devices are electrically connected, the front-stage controller is electrically connected with the 1 st LED driving device, and the LED control system is characterized in that: the LED control system also comprises a rear-stage controller, and the rear-stage controller is electrically connected with the Nth LED driving device;
when a circuit between the ith LED driving device and the (i + 1) th LED driving device is damaged, the control signal of the previous-stage controller is transmitted from the 1 st LED driving device to the ith LED driving device; the control signal of the latter-stage controller is transmitted from the (i + 1) th LED driving device to the Nth LED driving device;
wherein N is a natural number larger than i, and i is a natural number larger than 1.
The invention has the beneficial effects that: according to the LED driving device and the control system of the handheld bidirectional transmission device, the front-stage interface module and the rear-stage interface module are used as the input end and the output end through the circuits arranged on the front-stage interface module and the rear-stage interface module. On the basis, the intelligent transmission direction scanning monitoring module monitors the circuit state, and when a dead pixel is generated between the primary interface module and the data control module, the transmission path is changed, so that normal transmission is ensured. The data control module is responsible for decoding, regenerating, PWM and constant current generation of data, and when the circuit is normal, the data control module can output the data to the next data transmission device from the next-stage interface module. The intelligent transmission direction scanning monitoring module monitors the state of the circuit, when no signal is input into the primary interface module for a period of time, a disconnection point or a fault exists between the primary interface module and the data control module of the previous IC, and the transmission direction scanning monitoring module changes a transmission path at any time to ensure normal transmission of the whole system.
The transmission mode of the integrated circuit and the LED integrated circuit can be improved, each artificial intelligent single-wire transmission LED lamp string signal can still normally operate when broken, because the transmission signal is simultaneously interpreted from the two ends of the front stage and the rear stage of each lamp, single-wire input and output handshake communication is carried out, as long as the signal of the same lamp string is at a breaking point, the LED lamp positioned behind the breaking point can be changed into the protocol code of the rear stage because the front stage does not have the emission protocol code, each port can output an input signal, the single-wire artificial intelligent LED port can transmit a check code at any time, the check code of each port can be scanned and monitored at any time, as long as any end point is abnormally turned to the other port, the normal input and output display processing of the cascade system is kept, and the front stage and the rear stage temperature compensation codes are simultaneously informed, so that the adjacent artificial intelligent LEDs can be mutually communicated as a handshake mode, constant current mutual matching balance is achieved, and brightness and color temperature of each other are not changed due to difference of the LED lamp beads.
Description of the drawings:
for ease of illustration, the invention is described in detail by the following specific examples and figures.
Fig. 1 is a block diagram showing a first embodiment of a bidirectional transmission apparatus according to the present invention;
fig. 2 is a block diagram of a second embodiment of the bidirectional transmission apparatus according to the present invention, in which an intelligent transmission direction scanning supervision module receives input data of a previous interface module;
FIG. 3 is a circuit diagram of an interface switch unit according to a third embodiment of the bidirectional transmission apparatus of the present invention;
FIG. 4 is a circuit diagram of a conventional interface unit of a transmission apparatus;
FIG. 5 is another circuit diagram of an interface unit of a bidirectional transmission apparatus according to a third embodiment of the present invention;
FIG. 6 is a block diagram of the input data of two chip interface modules in a third embodiment of the bidirectional transmission apparatus of the present invention;
fig. 7 is a block diagram of a fourth embodiment of a bidirectional transmission apparatus according to the present invention, in which an intelligent transmission direction scanning monitoring module can receive input data of a previous interface module and also can receive input data of a next interface module;
fig. 8 is a schematic diagram of signal transmission when the intelligent transmission direction scanning supervision module in the fourth embodiment of the LED control system can receive input data (default transmission mode of the system) of the previous interface module;
FIG. 9 is a schematic diagram of signal transmission when the circuit of the fourth embodiment of the LED control system has a dead pixel and the transmission direction scanning monitoring module can receive the input data of the next-stage interface module;
fig. 10 is a state flow diagram of a transmission method of a bidirectional transmission apparatus according to a first embodiment of the present invention.
The specific implementation mode is as follows:
in order that the objects, aspects and advantages of the invention will become more apparent, the invention will be described by way of example only, and in connection with the accompanying drawings. It is to be understood that such description is merely illustrative and not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in fig. 1-10, the handshake type bidirectional transmission device of the present invention includes a previous interface module, a next interface module, an intelligent transmission direction scanning monitoring module, a data control module, and an LED output driving circuit, wherein an input end of the intelligent transmission direction scanning monitoring module is connected to the previous interface module and the next interface module, an output end of the intelligent transmission direction scanning monitoring module is connected to the data control module, and the data control module outputs a signal to the LED output driving circuit;
the intelligent transmission direction scanning monitoring module returns a confirmation code and performs data code processing when receiving an input signal of a previous-stage interface module; the intelligent transmission direction scanning monitoring module transmits an input signal data code to the data control module, and the data control module outputs a signal to control the LED output driving circuit; when the intelligent transmission direction scanning monitoring module cannot receive the input signal of the previous stage interface module after a period of time, an error code is transmitted to the previous stage and the next stage, the transmission direction scanning monitoring module switches the switching signal, the switching signal is input into the intelligent transmission direction scanning monitoring module by the next stage interface module, the signal is input into the data control module by the intelligent transmission direction scanning monitoring module, and the signal is output to the LED output driving circuit by the data control module; similarly, when the input signal of the next stage is abnormal, the previous stage can be switched to, so that the intelligent interpretation is carried out, and the single-point bidirectional control is achieved.
Specifically, the intelligent transmission direction scanning supervision module comprises a signal receiving scanning unit and a data selector, the signal receiving scanning unit controls the data selector, the previous-stage interface module and the data control module are respectively and electrically connected with the signal receiving scanning unit, the previous-stage interface module and the next-stage interface module are respectively and electrically connected with the data selector, the data selector is electrically connected with the data control module, and the data selector inputs signals to the data control module;
when the intelligent transmission direction scanning supervision module can receive an input signal of a previous-stage interface module, the signal of the previous-stage interface module is input into the signal receiving scanning unit, and the previous-stage interface module inputs the signal to the data selector; when the intelligent transmission direction scanning supervision module cannot receive the input signal of the previous-stage interface module, the input signal of the next-stage interface module is connected to the data selector, and the data selector inputs the signal to the data control module.
Specifically, the signal receiving and scanning unit is electrically connected with a high-output impedance circuit driver;
when the intelligent transmission direction scanning monitoring module cannot receive the input signal of the previous stage interface module, the signal receiving and scanning unit controls the high output impedance circuit driver to be communicated with the high output impedance circuit.
Specifically, the data selector includes an inverter;
when the intelligent transmission direction scanning supervision module can receive an input signal of a previous-stage interface module, the previous-stage interface module inputs the signal to the signal receiving and scanning unit, and an output signal of the signal receiving and scanning unit is output to the next-stage interface module through the data control module;
when the transmission direction scanning supervision module cannot receive an input signal of a previous-stage interface module, the next-stage interface module inputs the signal to the signal receiving and scanning unit, and the signal of the signal receiving and scanning unit is output to the previous-stage interface module;
when the intelligent transmission direction scanning monitoring module can receive an input signal of a next-stage interface module, the previous-stage interface module is in an output state;
when the intelligent transmission direction scanning monitoring module cannot receive an input signal of a previous-stage interface module, the previous-stage interface module is in an input state; when the previous-stage interface module is in an output state, a previous-stage input signal of the previous-stage interface module and a next-stage output signal of the previous-stage interface module are output; and when the previous-stage interface module is in an output state, the next-stage interface module inputs signals.
Specifically, the intelligent transmission direction scanning monitoring module further comprises a previous-stage switch unit and a next-stage switch unit, the data control module is electrically connected with the previous-stage switch unit and the next-stage switch unit respectively, the previous-stage switch unit is electrically connected with the previous-stage interface module, the next-stage switch unit is electrically connected with the next-stage interface module, and the previous-stage switch unit is further electrically connected with the signal receiving and scanning unit; the latter-stage switch unit is also electrically connected with the phase inverter, and the phase inverter is also electrically connected with the signal receiving scanning unit;
when the data control module can receive an input signal of the previous-stage interface module, the signal receiving and scanning unit controls the previous-stage switch unit to be in an off state and controls the next-stage switch unit to be in a on state, so that the data control module outputs a signal to the next-stage interface module;
when the data control module cannot receive the input signal of the previous-stage interface module, the signal receiving and scanning unit controls the previous-stage switch unit to be in an on state and controls the next-stage switch unit to be in an off state, so that the data control module receives the input signal of the next-stage interface module.
The LED driving device comprises the hand-held bidirectional transmission device, and the LED output driving circuit is a driving LED device output unit and is used for outputting signals to drive an LED.
The invention discloses an LED control system, which comprises a front-stage controller and LED driving devices, wherein N LED driving devices are electrically connected, the front-stage controller is electrically connected with the 1 st LED driving device, and the LED control system is characterized in that: the LED control system also comprises a rear-stage controller, and the rear-stage controller is electrically connected with the Nth LED driving device;
when a circuit between the ith LED driving device and the (i + 1) th LED driving device is damaged, the control signal of the previous-stage controller is transmitted from the 1 st LED driving device to the ith LED driving device; the control signal of the latter-stage controller is transmitted from the (i + 1) th LED driving device to the Nth LED driving device;
wherein N is a natural number larger than i, and i is a natural number larger than 1.
Example 1: referring to fig. 1, fig. 1 is a block diagram illustrating a bidirectional transmission device according to a first embodiment of the present invention. The application provides an intelligent bidirectional transmission device, which comprises a front-stage interface module, a rear-stage interface module, an intelligent transmission direction scanning monitoring module, a data control module and an LED, wherein one of the input ends of the intelligent transmission direction scanning monitoring module is connected with the front-stage interface module and the rear-stage interface module; when the intelligent transmission direction scanning monitoring module receives an input signal of a previous-stage interface module, the intelligent transmission direction scanning monitoring module transmits the input signal to the data control module, and the data control module outputs the signal to the LED; when the intelligent transmission direction scanning monitoring module cannot receive the input signal of the previous-stage interface module for a period of time, the next-stage interface module inputs the signal to the intelligent transmission direction scanning monitoring module, and the intelligent transmission direction scanning monitoring module inputs the signal to the data control module and outputs the signal to the LED by the data control module.
Example 2: referring to fig. 2, fig. 2 is a block diagram of a structure in which an intelligent transmission direction scanning monitoring module can receive input data of a previous interface module according to a second embodiment of the bidirectional transmission apparatus of the present invention; the front-stage interface module and the rear-stage interface module are respectively and electrically connected with the signal receiving and scanning unit, the front-stage interface module and the rear-stage interface module are respectively connected with a direction selector, the direction selector is connected with the data control module, and the direction selector inputs signals to the data control module; it is understood that in some cases, the interface of the next stage of the nth chip is in the output signal state, and is connected to the interface of the previous stage of the (N + 1) th chip, and it is possible that the interface is also in the output signal state at present, and this state may cause the device to burn out or malfunction when the respective output levels are different.
Example 3: referring to fig. 3-5, the intelligent transmission direction scanning monitoring module includes a direction selector and a signal receiving scanning unit connected to the direction selector, the signal receiving scanning unit controls the direction selector; when the data control module can receive input data of a previous-stage interface module, a signal of the previous-stage interface module is input into the signal receiving scanning unit; the previous stage interface module inputs signals to a direction selector; when the data control module can not receive the input data of the previous stage interface module after a period of time, the signal is input to the direction selector from the next stage interface module, the direction selector inputs the data control module, and the data control module inputs the signal to the signal receiving scanning unit. In this embodiment, the direction selector is controlled by the signal receiving and scanning unit.
The signal input of the invention has three conditions, in the first condition, the front-stage interface module and the back-stage interface module output signals to the direction selector, the system defaults that the front-stage interface signal enters the direction selector, the back-stage interface module outputs signals, and when the data control module cannot receive the input data of the front-stage interface module for a period of time, the signals are changed to input the signals from the back-stage interface module to the direction selector. In the second case, only the previous interface module outputs a signal to the direction selector, and in both cases, the direction selector outputs only a signal of the previous interface module. In the third situation, the direction selector can only receive the signal output by the next interface module, and at this time, the direction selector outputs the signal output by the next interface. The technical key point of the present application is that when a dead pixel occurs in a line, the circuit transmission mode of the previous stage interface module is changed by the circuit inside the previous stage interface module, so that it is necessary to discuss this structure.
Example 4: referring to fig. 7-9, the previous stage interface module is provided with an interface switching unit for inputting signals or outputting signals. In one embodiment, the interface switching unit includes a previous interface connection state and a next interface connection state, when the interface switching unit is in the previous interface connection state, a signal of the next interface module is disconnected, and the previous interface module corresponding to the interface selection module unit is in a connection first state, which is used as the input terminal. When the interface switching unit is in the signal input connection state of the next-stage interface, the previous-stage interface module corresponding to the interface switching unit is in the signal output state.
In a specific embodiment, only the previous stage interface module is provided with an interface switching unit. When the direction selector can receive the input data of the previous interface module, the previous interface module is in a signal input state, and when the direction selector cannot receive the input data of the previous interface module, the previous interface module is in a signal output state. When the former stage interface module is in signal input state, the signal received by the former stage interface module is unit input signal, and the latter stage interface module is output signal. When the former stage interface module is in signal output state, the latter stage interface module is connected with input signal. When the direction selector can not receive the input data of the previous stage interface module, the next stage interface module is adjusted to be in a state of connecting the input signal, the next stage interface module inputs the signal to the signal receiving scanning unit, and the signal receiving scanning unit outputs the signal to the previous stage interface module. Therefore, when the previous-stage interface module is in a signal output state, the direction selector controls the next-stage interface module to input signals and controls the previous-stage interface module to output signals.
In a more specific embodiment, the bidirectional transmission device further comprises a previous-stage switch unit and a next-stage switch unit, the data control module is electrically connected with the previous-stage switch unit and the next-stage switch unit respectively, the previous-stage switch unit is electrically connected with the previous-stage interface module, and the next-stage switch unit is electrically connected with the next-stage interface module; the previous stage switch unit is also electrically connected with the signal receiving and scanning unit; the latter stage switch unit and the former stage switch unit are in logic inversion; when the intelligent transmission direction scanning monitoring module can receive an input signal of a previous-stage interface module, the signal receiving and scanning unit controls the previous-stage switch unit to be in an off state and controls the next-stage switch unit to be in a on state, so that the data control module outputs a signal to the next-stage interface module; when the intelligent transmission direction scanning monitoring module cannot receive the input signal of the previous stage interface module, the signal receiving and scanning unit controls the next stage to be in an open circuit state and a closed circuit state, and the data control module receives the input signal of the next stage interface module.
The application provides an LED driving device, including foretell two-way transmission device, the mechanism is LED output unit, and this LED output unit is used for exporting the LED signal. Referring to fig. 7-9, it can be understood that, in the system, even if more than two LED driving devices are damaged continuously, the following circuits can be used normally, so as to solve the defect of high damage caused by the vulnerable points of single-wire transmission and greatly reduce the damage rate. Referring to fig. 10, the operation steps are as follows: detecting a previous-stage signal input by a previous-stage interface module; when the previous-stage signal is continuously sent, the control data control module receives the previous-stage signal; when the previous-stage signal does not last for a period of time, the control data control module stops receiving the previous-stage signal, and the control data control module receives the next-stage signal output by the next-stage interface module instead.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A hand-held bidirectional transmission device is characterized in that: the intelligent transmission direction scanning monitoring system comprises a front-stage interface module, a rear-stage interface module, an intelligent transmission direction scanning monitoring module, a data control module and an LED output driving circuit, wherein the input end of the intelligent transmission direction scanning monitoring module is connected with the front-stage interface module and the rear-stage interface module, the output end of the intelligent transmission direction scanning monitoring module is connected with the data control module, and the data control module outputs a signal to the LED output driving circuit;
the intelligent transmission direction scanning monitoring module returns a confirmation code and performs data code processing when receiving an input signal of a previous-stage interface module; the intelligent transmission direction scanning monitoring module transmits an input signal data code to the data control module, and the data control module outputs a signal to control the LED output driving circuit; when the intelligent transmission direction scanning monitoring module cannot receive the input signal of the previous stage interface module after a period of time, an error code is transmitted to the previous stage and the next stage, the transmission direction scanning monitoring module switches the switching signal, the switching signal is input into the intelligent transmission direction scanning monitoring module by the next stage interface module, the signal is input into the data control module by the intelligent transmission direction scanning monitoring module, and the signal is output to the LED output driving circuit by the data control module; similarly, when the input signal of the next stage is abnormal, the previous stage can be switched to, so that the intelligent interpretation is carried out, and the single-point bidirectional control is achieved.
2. A handshake type bidirectional transmission apparatus according to claim 1, characterized in that: the intelligent transmission direction scanning monitoring module comprises a signal receiving scanning unit and a data selector, the signal receiving scanning unit controls the data selector, the front-stage interface module and the data control module are respectively and electrically connected with the signal receiving scanning unit, the front-stage interface module and the rear-stage interface module are respectively connected with the data selector, the data selector is electrically connected with the data control module, and the data selector inputs signals to the data control module;
when the intelligent transmission direction scanning supervision module can receive an input signal of a previous-stage interface module, the signal of the previous-stage interface module is input into the signal receiving scanning unit, and the previous-stage interface module inputs the signal to the data selector; when the intelligent transmission direction scanning supervision module cannot receive the input signal of the previous-stage interface module, the input signal of the next-stage interface module is connected to the data selector, and the data selector inputs the signal to the data control module.
3. A hand-held two-way transfer device according to claim 2, wherein: the signal receiving and scanning unit is electrically connected with a high-output impedance circuit driver;
when the intelligent transmission direction scanning monitoring module cannot receive the input signal of the previous stage interface module, the signal receiving and scanning unit controls the high output impedance circuit driver to be communicated with the high output impedance circuit.
4. A hand-held two-way transfer device according to claim 2, wherein: the data selector includes an inverter;
when the intelligent transmission direction scanning supervision module can receive an input signal of a previous-stage interface module, the previous-stage interface module inputs the signal to the signal receiving and scanning unit, and an output signal of the signal receiving and scanning unit is output to the next-stage interface module through the data control module;
when the transmission direction scanning supervision module cannot receive an input signal of a previous-stage interface module, the next-stage interface module inputs the signal to the signal receiving and scanning unit, and the signal of the signal receiving and scanning unit is output to the previous-stage interface module;
when the intelligent transmission direction scanning monitoring module can receive an input signal of a next-stage interface module, the previous-stage interface module is in an output state;
when the intelligent transmission direction scanning monitoring module cannot receive an input signal of a previous-stage interface module, the previous-stage interface module is in an input state; when the previous-stage interface module is in an output state, a previous-stage input signal of the previous-stage interface module and a next-stage output signal of the previous-stage interface module are output; and when the previous-stage interface module is in an output state, the next-stage interface module inputs signals.
5. The device of claim 4, further comprising: the intelligent transmission direction scanning and monitoring module further comprises a previous-stage switch unit and a next-stage switch unit, the data control module is electrically connected with the previous-stage switch unit and the next-stage switch unit respectively, the previous-stage switch unit is electrically connected with the previous-stage interface module, the next-stage switch unit is electrically connected with the next-stage interface module, and the previous-stage switch unit is further electrically connected with the signal receiving and scanning unit; the latter-stage switch unit is also electrically connected with the phase inverter, and the phase inverter is also electrically connected with the signal receiving scanning unit;
when the data control module can receive an input signal of the previous-stage interface module, the signal receiving and scanning unit controls the previous-stage switch unit to be in an off state and controls the next-stage switch unit to be in a on state, so that the data control module outputs a signal to the next-stage interface module;
when the data control module cannot receive the input signal of the previous-stage interface module, the signal receiving and scanning unit controls the previous-stage switch unit to be in an on state and controls the next-stage switch unit to be in an off state, so that the data control module receives the input signal of the next-stage interface module.
6. An LED driving device, characterized in that: the handheld bidirectional transmission device comprises the LED output driving circuit as claimed in any one of claims 1 to 5, wherein the LED output driving circuit is a driving LED device output unit for outputting a signal to drive an LED.
7. An LED control system, comprising a previous-stage controller and the LED driving device as claimed in claim 6, wherein N LED driving devices are electrically connected, and the previous-stage controller is electrically connected with the 1 st LED driving device, and the LED control system is characterized in that: the LED control system also comprises a rear-stage controller, and the rear-stage controller is electrically connected with the Nth LED driving device;
when a circuit between the ith LED driving device and the (i + 1) th LED driving device is damaged, the control signal of the previous-stage controller is transmitted from the 1 st LED driving device to the ith LED driving device; the control signal of the latter-stage controller is transmitted from the (i + 1) th LED driving device to the Nth LED driving device;
wherein N is a natural number larger than i, and i is a natural number larger than 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110436016.7A CN113035119A (en) | 2021-04-22 | 2021-04-22 | LED driving device and control system of hand-held bidirectional transmission device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110436016.7A CN113035119A (en) | 2021-04-22 | 2021-04-22 | LED driving device and control system of hand-held bidirectional transmission device |
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| CN113035119A true CN113035119A (en) | 2021-06-25 |
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| CN202110436016.7A Pending CN113035119A (en) | 2021-04-22 | 2021-04-22 | LED driving device and control system of hand-held bidirectional transmission device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114974140A (en) * | 2022-05-27 | 2022-08-30 | 北京芯格诺微电子有限公司 | LED driving chip for manufacturing single-wire chain type communication link in Mini-LED backlight module |
-
2021
- 2021-04-22 CN CN202110436016.7A patent/CN113035119A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114974140A (en) * | 2022-05-27 | 2022-08-30 | 北京芯格诺微电子有限公司 | LED driving chip for manufacturing single-wire chain type communication link in Mini-LED backlight module |
| CN114974140B (en) * | 2022-05-27 | 2023-08-29 | 北京芯格诺微电子有限公司 | LED driving chip for manufacturing single-wire chain type communication link in Mini-LED backlight module |
| WO2023226640A1 (en) * | 2022-05-27 | 2023-11-30 | 北京芯格诺微电子有限公司 | Led driving chip for manufacturing single-wire chained communication link in mini-led backlight module |
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