CN116312393B - Method, device, equipment and storage medium for driving color ink screen - Google Patents
Method, device, equipment and storage medium for driving color ink screen Download PDFInfo
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- CN116312393B CN116312393B CN202211656699.8A CN202211656699A CN116312393B CN 116312393 B CN116312393 B CN 116312393B CN 202211656699 A CN202211656699 A CN 202211656699A CN 116312393 B CN116312393 B CN 116312393B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- 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
- G09G3/34—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 by control of light from an independent source
- G09G3/3433—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 by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
- G09G3/344—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 by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on particles moving in a fluid or in a gas, e.g. electrophoretic devices
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/021—Power management, e.g. power saving
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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Abstract
The invention discloses a method, a device, equipment and a storage medium for driving a color ink screen, wherein the method comprises the following steps: simulating a protocol time sequence for driving the color ink screen according to a mini-lvds protocol, and combining the protocol time sequence with preset image data to obtain an image signal; converting the image signal into a differential signal satisfying the mini-lvds protocol; and combining the differential signals with a preset control time sequence to drive the color ink screen. By adopting the technical scheme of the invention, the FPGA or the special driving chip with high cost and high power consumption can be not adopted, so that the cost and the power consumption of driving the mini-lvds color ink screen are reduced.
Description
Technical Field
The present invention relates to the field of ink screens, and in particular, to a method, an apparatus, a device, and a storage medium for driving a color ink screen.
Background
The ink screen (electronic paper) is a screen made of a charged capsule, and has the characteristics of power consumption during driving and power failure after driving is finished, and the image can still be maintained for months. With the development of technology, ink screens are also being changed from black-and-white display screens to color display screens, and the interfaces of the application of the ink screens are also being upgraded to mini-lvds interfaces (a high-speed serial interface).
In the prior art, a special driving chip provided by an ink screen manufacturer or an FPGA (Field Programmable Gate Array digital integrated circuit chip) is generally adopted to drive the display of the mini-lvds color ink screen. However, the dedicated driver chip provided by the ink screen manufacturer can only rely on the manufacturer for debugging, and the development period is long, and the problems of high hardware cost, high power consumption and the like exist in the case that the dedicated driver chip or the FPGA is adopted by a user.
Disclosure of Invention
The invention mainly aims to provide a driving method, a device, equipment and a storage medium of a color ink screen, aiming at realizing that a high-cost and high-power-consumption FPGA or a special driving chip is not adopted so as to reduce the cost and power consumption for driving a mini-lvds color ink screen.
In order to achieve the above object, the present invention provides a method for driving a color ink screen, the method for driving a color ink screen being applied to a terminal device, the method for driving a color ink screen comprising:
simulating a protocol time sequence for driving the color ink screen according to a mini-lvds protocol, and combining the protocol time sequence with preset image data to obtain an image signal;
converting the image signal into a differential signal satisfying the mini-lvds protocol;
And combining the differential signals with a preset control time sequence to drive the color ink screen.
Optionally, the step of converting the image signal into a differential signal satisfying the mini-lvds protocol includes:
converting the image signal into a TTL (Transistor-Transistor Logic) parallel signal;
and converting the TTL parallel signals into differential signals meeting the mini-lvds protocol.
Optionally, the step of converting the TTL parallel signal into a differential signal that satisfies the mini-lvds protocol includes:
converting the data signal and the protocol time sequence in the TTL parallel signal into differential data signals meeting the mini-lvds protocol;
converting clock signals in the TTL parallel signals into differential clock signals meeting the mini-lvds protocol;
the differential data signal and the differential clock signal are combined into a differential signal that satisfies the mini-lvds protocol.
Optionally, the step of converting the clock signal in the TTL parallel signal into a differential clock signal that satisfies the mini-lvds protocol includes:
dividing the clock signal in the TTL parallel signal to obtain a clock frequency division signal;
The clock frequency division signal is converted into a differential clock signal meeting the mini-lvds protocol.
Optionally, the step of simulating a protocol timing for driving the color ink screen according to the mini-lvds protocol includes:
converting the initial image logic signal into a TTL logic signal according to a mini-lvds protocol;
converting the TTL logic signal into a target image logic signal;
and simulating a protocol time sequence for driving the color ink screen according to the target image logic signal.
Optionally, before the step of combining the differential signals with a preset control timing to drive the color ink screen, the method further includes:
simulating an initial control time sequence for driving the color ink screen;
converting the initial control timing sequence into a TTL control timing sequence;
optionally, the step of driving the color ink screen by combining the differential signals with a preset control timing includes:
and combining the differential signals with TTL control time sequences to drive the color ink screen.
Optionally, before the step of combining the protocol timing with preset image data to obtain an image signal, the method further includes:
performing pixel comparison on an image to be displayed and a current display image of the color ink screen device to obtain an index value;
Inquiring index waveform file data corresponding to the index value in a preset waveform file, and taking the index waveform file data as preset image data.
In addition, in order to achieve the above object, the present invention also provides a driving device for a color ink screen, the driving device for a color ink screen comprising:
the protocol time sequence simulation module is used for simulating a protocol time sequence for driving the color ink screen according to a mini-lvds protocol and combining the protocol time sequence with preset image data to obtain an image signal;
the signal conversion module is used for converting the image signal into a differential signal meeting the mini-lvds protocol;
and the driving module is used for combining the differential signals with a preset control time sequence to drive the color ink screen.
Wherein each functional module of the driving device of the color ink screen of the present invention realizes the steps of the driving method of the color ink screen as described above when in operation.
In addition, to achieve the above object, the present invention also provides a terminal device including: the color ink screen driving method comprises the steps of a memory, a processor and a color ink screen driving program which is stored in the memory and can run on the processor, wherein the color ink screen driving program is executed by the processor to realize the color ink screen driving method.
In addition, in order to achieve the above object, the present invention also proposes a storage medium having stored thereon a driver of a color ink screen, which when executed by a processor, implements the steps of the method for driving a color ink screen as described above.
The invention provides a method, a device, a terminal device and a storage medium for driving a color ink screen, wherein the method for driving the color ink screen comprises the following steps: simulating a protocol time sequence for driving the color ink screen according to a mini-lvds protocol, and combining the protocol time sequence with preset image data to obtain an image signal; converting the image signal into a differential signal satisfying the mini-lvds protocol; and combining the differential signals with a preset control time sequence to drive the color ink screen.
Compared with the traditional driving mode of the color ink screen, the invention simulates the protocol time sequence required by driving the color ink screen according to the mini-lvds protocol, and takes the image data preset by the simulated protocol time sequence set together as the image signal of the color ink screen to be output from a main control SOC (System on chip); then, converting the output image signal into a differential signal satisfying the mini-lvds protocol; and then synchronously outputting the differential signals to a mini-lvds interface to drive the color ink screen in combination with a preset control time sequence.
Therefore, the invention does not need to adopt an FPGA or a special driving chip with high cost and high power consumption, but firstly simulates the mini-lvds protocol time sequence, then converts the protocol time sequence and the image data as image signals into differential signals meeting the mini-lvds protocol, and then combines the differential signals with the control time sequence to drive the mini-lvds color ink screen, thereby realizing the effect of reducing the cost and the power consumption for driving the mini-lvds color ink screen.
Drawings
Fig. 1 is a schematic device structure diagram of a hardware operating environment of a terminal device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating an embodiment of a driving method of a color ink screen according to the present invention;
FIG. 3 is a schematic diagram of a simulation protocol timing diagram according to an embodiment of a driving method of a color ink screen of the present invention;
FIG. 4 is a schematic diagram of a hardware switching circuit according to an embodiment of a driving apparatus for a color ink screen of the present invention;
FIG. 5 is a schematic diagram illustrating a driving apparatus of a color ink screen according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a driving device of a color ink screen according to an embodiment of the invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The embodiment of the invention provides color ink screen equipment.
Referring to fig. 1, fig. 1 is a schematic device structure diagram of a hardware operating environment of a color ink screen device according to an embodiment of the present invention.
As shown in fig. 1, in a hardware operating environment of a color ink screen apparatus, the color ink screen apparatus may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, a communication bus 1002. Wherein the communication bus 1002 is used to enable connected communication between these components. The user interface 1003 may include a Display, an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may further include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. The memory 1005 may also optionally be a storage device separate from the processor 1001 described above.
It will be appreciated by those skilled in the art that the color ink screen apparatus structure shown in FIG. 1 is not limiting of the apparatus and may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.
As shown in fig. 1, an operating system, a network communication module, a user interface module, and a driver of the color ink screen may be included in the memory 1005 as one type of computer storage medium.
In the device shown in fig. 1, the network interface 1004 is mainly used for connecting to a background server, and performing data communication with the background server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and the processor 1001 may be configured to call a driver of the color ink screen stored in the memory 1005 and perform the following operations:
simulating a protocol time sequence for driving the color ink screen according to a mini-lvds protocol, and combining the protocol time sequence with preset image data to obtain an image signal;
converting the image signal into a differential signal satisfying the mini-lvds protocol;
and combining the differential signals with a preset control time sequence to drive the color ink screen.
Optionally, the processor 1001 may be further configured to call a driver of the color ink screen stored in the memory 1005, and perform the following operations:
Converting the image signal into a TTL parallel signal;
and converting the TTL parallel signals into differential signals meeting the mini-lvds protocol.
Optionally, the processor 1001 may be further configured to call a driver of the color ink screen stored in the memory 1005, and perform the following operations:
converting the data signal and the protocol time sequence in the TTL parallel signal into differential data signals meeting the mini-lvds protocol;
converting clock signals in the TTL parallel signals into differential clock signals meeting the mini-lvds protocol;
the differential data signal and the differential clock signal are combined into a differential signal that satisfies the mini-lvds protocol.
Optionally, the processor 1001 may be further configured to call a driver of the color ink screen stored in the memory 1005, and perform the following operations:
dividing the clock signal in the TTL parallel signal to obtain a clock frequency division signal;
the clock frequency division signal is converted into a differential clock signal meeting the mini-lvds protocol.
Optionally, the processor 1001 may be further configured to call a driver of the color ink screen stored in the memory 1005, and perform the following operations:
converting the initial image logic signal into a TTL logic signal according to a mini-lvds protocol;
Converting the TTL logic signal into a target image logic signal;
and simulating a protocol time sequence for driving the color ink screen according to the target image logic signal.
Optionally, the processor 1001 may be further configured to invoke a driver of the color ink screen stored in the memory 1005, and perform the following operations before performing the step of driving the color ink screen by combining the differential signals with a preset control timing:
simulating an initial control time sequence for driving the color ink screen;
converting the initial control timing sequence into a TTL control timing sequence;
optionally, the processor 1001 may be further configured to call a driver of the color ink screen stored in the memory 1005, and perform the following operations:
the differential signals are combined with the TTL control timing to drive the color ink screen.
Optionally, the processor 1001 may be further configured to invoke a driver of the color ink screen stored in the memory 1005, and perform the following operations before performing the step of combining the protocol timing with preset image data to obtain an image signal:
performing pixel comparison on an image to be displayed and a current display image of the color ink screen device to obtain an index value;
Inquiring index waveform file data corresponding to the index value in a preset waveform file, and taking the index waveform file data as preset image data.
Based on the above-described hardware structure, the overall concept of the respective embodiments of the driving method of the color ink screen of the present invention is proposed.
In the embodiment of the invention, the color ink screen is a screen made of a charged black-and-white capsule, and has the characteristics of power consumption during driving and power failure after driving is finished, and the image can still be maintained for months. Along with the development of technology, color ink screens are also transited from black-and-white display screens to color display screens, and the interfaces of the application of the color ink screens are also upgraded to mini-lvds interfaces.
In the prior art, a special driving chip provided by an ink screen manufacturer or an FPGA is adopted to drive the display of the mini-lvds color ink screen. However, the special driving chip provided by the ink screen manufacturer can only be debugged by depending on the manufacturer, the development period is long, and the problems of high hardware cost, long development time, high hardware power consumption and the like exist in the case that a user adopts the special driving chip or the FPGA.
In view of the above problems, an embodiment of the present invention provides a method, an apparatus, a terminal device, and a storage medium for driving a color ink screen, where the method for driving a color ink screen includes: simulating a protocol time sequence for driving the color ink screen according to a mini-lvds protocol, and combining the protocol time sequence with preset image data to obtain an image signal; converting the image signal into a differential signal satisfying the mini-lvds protocol; and combining the differential signals with a preset control time sequence to drive the color ink screen.
Compared with the traditional driving mode of the color ink screen, the invention simulates the protocol time sequence required by driving the color ink screen according to the mini-lvds protocol, and takes the image data preset by the simulated protocol time sequence set together as the image signal of the color ink screen to be output from a main control SOC (System on chip); then, converting the output image signal into a differential signal satisfying the mini-lvds protocol; and finally, synchronously outputting the differential signals to a mini-lvds interface to drive the color ink screen by combining a preset control time sequence.
Therefore, the invention does not need to adopt an FPGA or a special driving chip with high cost and high power consumption, but firstly simulates the mini-lvds protocol time sequence, then converts the protocol time sequence and the image data as image signals into differential signals meeting the mini-lvds protocol, and then combines the differential signals with the control time sequence to drive the mini-lvds color ink screen, thereby realizing the effect of reducing the cost and the power consumption for driving the mini-lvds color ink screen.
Based on the above-described general idea of the driving method of the color ink panel of the present invention, various embodiments of the driving method of the color ink panel of the present invention are proposed.
Referring to fig. 2, fig. 2 is a flow chart of a driving method of a color ink screen according to a first embodiment of the invention. It should be noted that although a logical order is depicted in the flowchart, in some cases the steps depicted or described may be performed in a different order than presented herein.
In this embodiment, the driving method of the color ink screen of the present invention is applied to the color ink screen apparatus described above. It should be understood that, based on different design requirements of practical applications, the driving method of the color ink screen of the present invention may of course be applied to other terminal devices in different possible embodiments, and for convenience of understanding and explanation, the driving method of the color ink screen of the present invention is described with the color ink screen device as a direct execution body in this embodiment.
As shown in fig. 2, in this embodiment, the driving method of the color ink screen of the present invention may include:
step S10, simulating a protocol time sequence for driving the color ink screen according to a mini-lvds protocol, and combining the protocol time sequence with preset image data to obtain an image signal;
in this embodiment, the color ink screen device simulates a protocol timing sequence required for driving the mini-lvds color ink screen in its own host SOC according to the mini-lvds protocol, and after the protocol timing sequence is obtained by simulation, the color ink screen device still combines the protocol timing sequence with preset image data in its own host SOC, and outputs the combined data as an image signal from the host SOC to the hardware circuit.
In this embodiment, the main control SOC of the color ink screen device is a chip of a hardware module such as a central arm cpu (Advanced RISC Machines central processing unit ARM processor) core, a ddr controller (a controller), an emmc controller (a controller), and a display module, and the system and software of the color ink screen device are all running on the main control SOC.
Optionally, in a possible embodiment, step S10 described above includes:
s101, converting an initial image logic signal into a TTL logic signal according to a mini-lvds protocol;
in this embodiment, the color ink screen device converts the received initial image logic signal into a TTL logic signal in its own main control SOC according to a mini-lvds protocol, where the mini-lvds protocol is a communication manner and requirements to be complied with between mini-lvds interfaces that need to exchange information, and in this embodiment, the mini-lvds protocol specifies a logic signal layer of the color ink screen drive.
Step S102, converting the TTL logic signals into target image logic signals;
in this embodiment, the color ink screen device converts the TTL logic signal obtained by converting the initial image logic signal into the target image logic signal in its own main control SOC.
Step S103, simulating the protocol time sequence for driving the color ink screen according to the target image logic signal.
In this embodiment, the color ink screen device simulates the protocol timing required for driving the mini-lvds color ink screen according to the converted target image logic signal in the host SOC of the color ink screen device, so that the color ink screen device simulates the protocol timing required for driving the mini-lvds color ink screen by constructing different image data, and the protocol timing can be matched with the color ink screen.
As shown in fig. 3, in this embodiment, assuming that the mini-lvds protocol specifies that, before data is sent, a reset pulse signal needs to be output through Lane0 (a mini-lvds data channel), and an initial image logic signal bit0 (a channel for transmitting image data) is mapped to Lane0 in hardware, when bit0 sequentially outputs 0, 1, and 1, the reset pulse signal corresponding to LV0 (a mini-lvds data channel) in the graph, that is, the reset pulse signal of Lane0 is: l (low), L, H (high), H, H. That is, when constructing the target image logic signal, bit0 values are sequentially filled with 0, 1, and LVCLKP (a signal) is a clock signal of mini-lvds in the figure.
Step S20: converting the image signal into a differential signal satisfying the mini-lvds protocol;
in this embodiment, after the color ink screen device outputs the protocol timing and the image data as an image signal from the main control SOC, the image data is converted into a differential signal satisfying the mini-lvds protocol through a hardware circuit.
It should be noted that, in this embodiment, the color ink screen device includes a display module interface, where the display module interface may be an interface such as MIPI DSI, TTL RGB, lvds, eDP (an interface form), and the color ink screen device outputs an image signal from the main control SOC through the display module interface.
Optionally, in a possible embodiment, the step S20 may include:
step S201: converting the image signal into a TTL parallel signal;
in this embodiment, the color ink screen device converts the image signal output from the main control SOC into the TTL parallel signal, where the image signal may be in the form of MIPI DSI/lvds/eDP, etc., and it should be understood that, based on different design requirements of practical application, the image signal output from the main control SOC by the color ink screen device may be correspondingly set to a specific different format based on different design requirements of practical application.
It should be noted that, in this embodiment, the color ink screen device may use a TC358867 chip (a chip name) or a icn6211 chip (a chip name) to convert an image signal into a TTL parallel signal to complete conversion of a data signal, and it should be understood that, based on different design requirements of practical applications, the color ink screen device may also use other chips to convert an image signal into a TTL parallel signal, and the driving method of the color ink screen of the present invention is not limited to this chip type.
Further, in one possible embodiment, if the image signal outputted from the color ink screen apparatus in the master SOC is a TTL parallel signal, the image signal does not perform the step of "converting the image signal into a TTL parallel signal".
Step S202: and converting the TTL parallel signals into differential signals meeting the mini-lvds protocol.
In this embodiment, the color ink screen device converts the TTL parallel signal into a differential signal that satisfies the mini-lvds protocol, and inputs the obtained differential signal to the color ink screen through the mini-lvds interface, so as to light the color ink screen.
It should be noted that, in this embodiment, the color ink screen device may convert the TTL parallel signal into a differential signal that satisfies the mini-lvds protocol through the DSLVDS1047PWR chip (a chip name), and it should be understood that, based on different design requirements of practical applications, the color ink screen device may also convert the TTL parallel signal into a differential signal that satisfies the mini-lvds protocol through other chips, and the driving method of the color ink screen of the present invention is not limited to this chip type.
Optionally, in a possible embodiment, the step S202 may include:
step S2021: converting the data signal and the protocol time sequence in the TTL parallel signal into differential data signals meeting the mini-lvds protocol;
in this embodiment, the color ink screen device converts the image signal output in the self-master SOC into a TTL parallel signal including a data signal portion and a clock signal portion and a protocol timing portion, and converts the data signal portion and the protocol timing portion in the TTL parallel signal into differential data signals satisfying the mini-lvds protocol.
Step S2022: converting clock signals in the TTL parallel signals into differential clock signals meeting the mini-lvds protocol;
in this embodiment, the color ink screen device converts the image signal output in the self-master SOC into a TTL parallel signal, which includes a data signal portion and a clock signal portion, and the color ink screen device converts the clock signal portion in the TTL parallel signal into a differential clock signal that satisfies the mini-lvds protocol.
Step S2023: the differential data signal and the differential clock signal are combined into a differential signal that satisfies the mini-lvds protocol.
In this embodiment, the color ink screen device combines the obtained differential data signal and the differential clock signal as a differential signal, and the electrical signal of the differential signal satisfies the mini-lvds protocol and can be input to the color ink screen through the mini-lvds interface
Optionally, in a possible embodiment, the step S2022 may include:
step A10: dividing the clock signal in the TTL parallel signal to obtain a clock frequency division signal;
in this embodiment, after the color ink screen device converts the image signal into the TTL parallel signal, since the TTL parallel signal includes a data signal portion and a clock signal portion, and for the clock signal portion, since the TTL parallel signal is triggered by a single edge and the differential signal is triggered by a double edge, the clock frequency in the differential signal only needs to be the common clock frequency of the TTL parallel signal, the color ink screen device divides the clock signal in the TTL parallel signal by the clock frequency dividing circuit, so as to obtain a clock frequency dividing signal, and the clock frequency dividing signal has half the frequency of the clock signal.
Step A20: the clock frequency division signal is converted into a differential clock signal meeting the mini-lvds protocol.
In this embodiment, the color ink screen device converts the clock frequency division signal obtained by the clock frequency division circuit into a differential clock signal satisfying the mini-lvds protocol, that is, the differential clock signal at this time is 1/2 of the clock signal in the TTL parallel signal.
It should be noted that, in this embodiment, the color ink screen device may divide the clock signal portion in the TTL parallel signal by using the SN74AUP1G74RSER chip (a chip name), and it should be understood that, based on different design requirements of practical applications, the color ink screen device may also divide the clock signal portion in the TTL parallel signal by using other chips, and the driving method of the color ink screen of the present invention is not limited to this chip type.
Step S30: and combining the differential signals with a preset control time sequence to drive the color ink screen.
In this embodiment, the color ink screen device converts the image signal output from its own master SOC into a differential signal satisfying the mini-lvds protocol, and then drives the color ink screen by combining the differential signal with a preset control timing.
Optionally, in a possible embodiment, before step S30, the method further includes:
Step B10: simulating an initial control time sequence for driving the color ink screen;
in this embodiment, the color ink screen device simulates an initial control timing required for driving the color ink screen in its own master SOC according to the control timing requirements required for the color ink screen, including signals such as line and field synchronization.
Step B20, converting the initial control time sequence into a TTL control time sequence;
in this embodiment, after the color ink screen device obtains the initial control timing sequence through simulation, the initial control timing sequence is output from the display module interface to the hardware circuit, and the color ink screen converts the initial control timing sequence into the TTL control timing sequence.
It should be noted that, in the present embodiment, the color ink screen device may use the TC358867 chip or the ICN6211 chip to convert the initial control timing into the TTL control timing, and it should be understood that, based on different design requirements of practical applications, the color ink screen device may also use other chips to convert the initial control timing into the TTL control timing, and the driving method of the color ink screen of the present invention is not limited to this chip type.
Based on this, step S30 described above: the step of driving the color ink screen by combining the differential signals with a preset control timing may include:
Step S301: and combining the differential signals with TTL control time sequences to drive the color ink screen.
In this embodiment, after the color ink screen device converts the initial control timing sequence output from its own master control SOC into the TTL control timing sequence, the TTL control timing sequence is combined with the differential signal satisfying the mini-lvds protocol to drive the color ink screen.
As shown in fig. 4, in this embodiment, the main control SOC of the color ink screen device outputs an image signal to the hardware conversion circuit in the color ink screen device through the display module interface, where the display module interface may be MIPI DSI/lvds/eDP or the like; then, the color ink screen device converts the image signals such as MIPIDSI/lvds/eDP into TTL RGB signals, that is, converts the image signals into TTL parallel signals; then, the color ink screen device converts ttl_rgb_data (Data signal part in the TTL parallel signal) and protocol timing into differential Data (Data signal), and at the same time, the color ink screen device divides the ttl_rgb_clk (clock signal part in the TTL parallel signal) by a clock frequency division circuit to obtain ttl_rgb_clk/2 (clock frequency division signal), and then converts the ttl_rgb_clk/2 into differential Clk (clock signal) signals, so that the color ink screen device obtains differential signals with electrical characteristics satisfying mini-lvds protocol, and outputs the differential signals and ttl_rgb_ctrl (TTL control timing) to the color ink screen to light the color ink screen.
In this embodiment, the driving method of a color ink screen provided by the present invention includes: simulating a protocol time sequence for driving the color ink screen according to a mini-lvds protocol, and combining the protocol time sequence with preset image data to obtain an image signal; converting the image signal into a differential signal satisfying the mini-lvds protocol; and combining the differential signals with a preset control time sequence to drive the color ink screen.
According to the method for driving the color ink screen, a protocol time sequence required by driving the mini-lvds color ink screen is simulated in a main control SOC of the color ink screen device according to a mini-lvds protocol, after the protocol time sequence is obtained through simulation, the protocol time sequence is still combined with preset image data in the main control SOC of the color ink screen device, and the combined data is output from the main control SOC as an image signal; then, the color ink screen device converts the image data into differential signals meeting mini-lvds protocols through a hardware circuit; finally, the color ink screen device outputs the differential signal to the mini-lvds interface in combination with a preset control time sequence to drive the color ink screen.
Therefore, the invention does not need to adopt an FPGA or a special driving chip with high cost and high power consumption, but firstly simulates the mini-lvds protocol time sequence, then converts the protocol time sequence and the image data as image signals into differential signals meeting the mini-lvds protocol, and then combines the differential signals with the TTL control time sequence to drive the mini-lvds color ink screen, thereby realizing the effect of reducing the cost and the power consumption for driving the mini-lvds color ink screen.
Further, based on the above-described first embodiment of the driving method of the color ink screen of the present invention, a second embodiment of the driving method of the color ink screen of the present invention is proposed.
In this embodiment, before the step of combining the protocol timing with the preset image data to obtain the image signal in the step S10 of the first embodiment, the method for driving a color ink screen according to the present invention may further include:
step S40: performing pixel comparison on an image to be displayed and a current display image of the color ink screen device to obtain an index value;
in this embodiment, the color ink screen device performs pixel comparison between the image to be displayed and the current display image, and the color ink screen device may obtain the index value of the corresponding pixel point after the pixels of the two images are compared.
In this embodiment, the image to be displayed and the current display image of the color ink screen device each include a plurality of pixels, and the color ink screen device performs pixel comparison on the plurality of pixels according to coordinates one by one to obtain a plurality of index values, thereby forming an index table.
Furthermore, in one possible embodiment, the color ink screen device may pre-process the image according to different modes or different display requirements of the upper layer before the image to be displayed and the currently displayed image are subjected to pixel contrast. Including but not limited to color mapping image processing, image binarization processing, 2 gray scale dithering processing, 4 gray scale dithering processing, 16 gray scale dithering processing, image gamma processing (an image processing mode), image brightness enhancement, image saturation processing, etc.
Illustratively, in the present embodiment, the color ink screen apparatus compares each pixel of the image to be displayed and the currently displayed image, and on the (x, y) coordinates, the gray value of the currently displayed image is G0 and the gray value of the image to be displayed is G1, and then pixel comparison is performed on the coordinates to obtain the index value. And comparing all pixels of the image to be displayed with all pixels of the current display image by the color ink screen to obtain index values of all pixels, wherein all the index values are used as an index table.
Step S50: inquiring index waveform file data corresponding to the index value in a preset waveform file, and taking the index waveform file data as preset image data.
In this embodiment, the color ink screen device queries index waveform file data corresponding to the index value in the waveform file stored by the color ink screen device, and since the color ink screen device has a plurality of index values, the color ink screen device queries a plurality of index waveform data in the waveform file, and the color ink screen device uses the queried plurality of index waveform data as preset image data, and uses the image data in combination with the above protocol time sequence as an image signal to output from the main control SOC.
In this embodiment, the waveform file is a data file, and the data file includes index waveform file data corresponding to each index value, and the data includes level data and transmission times required to be transmitted to drive each pixel point.
As shown in fig. 5, in this embodiment, the color ink screen device includes a main control SOC, a hardware conversion circuit, and an E ink (electronic ink) color ink screen, where the main control SOC sends data to the hardware conversion circuit through a display interface such as MIPI DSI/TTL RGB/LVDS/eDP of the SOC, the hardware conversion circuit sends data to the E ink screen through a mini-LVDS interface, where the main control SOC transmits the acquired image signal and the initial control timing to the hardware conversion circuit through a display interface such as MIPI DSI/TTL RGB/LVDS/eDP of the SOC, the hardware conversion circuit converts the image signal into a differential signal satisfying mini-LVDS protocol, converts the initial control timing into a TTL control timing, and then transmits the differential signal and the TTL control timing to the E ink color ink screen, and the color ink screen device drives the E ink color ink screen.
In this embodiment, the driving method of the color ink screen of the present invention performs pixel comparison between the image to be displayed and the current display image of the color ink screen device, and the color ink screen device can obtain the index value of the corresponding pixel point after the pixels of the two images are compared; then, the color ink screen device queries index waveform file data corresponding to the index values in the waveform file stored by the color ink screen device, and as the color ink screen device has a plurality of index values, the color ink screen device queries a plurality of index waveform data in the waveform file, the color ink screen device uses the queried plurality of index waveform data as preset image data, and the image data is output from the main control SOC as an image signal by combining the protocol time sequence.
Therefore, the invention does not need to adopt an FPGA or a special driving chip with high cost and high power consumption, but combines the acquired image data and the mini-lvds protocol time sequence to serve as an image signal, then converts the image signal into a differential signal meeting the mini-lvds protocol, and combines the differential signal with the TTL control time sequence to drive the mini-lvds color ink screen, thereby realizing the effect of reducing the cost and the power consumption for driving the mini-lvds color ink screen.
In addition, the embodiment of the invention also provides a driving device of the color ink screen.
Referring to fig. 6, the driving device of the color ink screen of the present invention includes:
the protocol time sequence simulation module 10 is used for simulating a protocol time sequence for driving the color ink screen according to a mini-lvds protocol and combining the protocol time sequence with preset image data to obtain an image signal;
a signal conversion module 20, configured to convert the image signal into a differential signal that satisfies the mini-lvds protocol;
the driving module 30 is configured to combine the differential signals with a preset control timing to drive the color ink screen.
Optionally, the protocol timing simulation module 10 includes:
the first conversion unit is used for converting the initial image logic signal into a TTL logic signal according to a mini-lvds protocol;
A second conversion unit for converting the TTL logic signal into a target image logic signal;
and the simulation unit is used for simulating the protocol time sequence for driving the color ink screen according to the target image logic signal.
Optionally, the signal conversion module 20 includes:
a third conversion unit for converting the image signal into a TTL parallel signal;
and the fourth conversion unit is used for converting the TTL parallel signals into differential signals meeting the mini-lvds protocol.
Optionally, the fourth conversion unit includes:
the data conversion subunit is used for converting the data signals and protocol time sequences in the TTL parallel signals into differential data signals meeting the mini-lvds protocol;
the clock conversion subunit is used for converting the clock signals in the TTL parallel signals into differential clock signals meeting the mini-lvds protocol; and the clock frequency dividing unit is used for dividing the clock signal in the TTL parallel signal to obtain a clock frequency dividing signal; and converting the clock frequency division signal into a differential clock signal satisfying the mini-lvds protocol.
And the combining subunit is used for combining the differential data signal and the differential clock signal into a differential signal meeting the mini-lvds protocol.
Optionally, the driving module 30 includes:
and the driving unit is used for combining the differential signals with the TTL control time sequence to drive the color ink screen.
Optionally, the driving device of the color ink screen of the present invention further includes:
the simulation module is used for simulating an initial control time sequence for driving the color ink screen;
the time sequence conversion module is used for converting the initial control time sequence into a TTL control time sequence;
the contrast module is used for carrying out pixel contrast on the image to be displayed and the current display image of the color ink screen device so as to obtain an index value;
the query module is used for querying index waveform file data corresponding to the index value in a preset waveform file, and taking the index waveform file data as preset image data.
The function implementation of each module in the driving device of the color ink screen corresponds to each step in the driving method embodiment of the color ink screen, and the function and implementation process of the function implementation are not described in detail herein.
In addition, the present invention also proposes a storage medium having stored thereon a program for driving a color ink screen, which when executed by a processor, implements the steps of the method for driving a color ink screen of the present invention as described above.
The specific embodiments of the storage medium of the present invention are substantially the same as the embodiments of the driving method of the color ink screen described above, and will not be described herein.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present invention.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.
Claims (10)
1. A driving method of a color ink screen, characterized by being applied to a color ink screen apparatus, the driving method of the color ink screen comprising:
simulating a protocol time sequence for driving the color ink screen according to a mini-lvds protocol, and combining the protocol time sequence with preset image data to obtain an image signal;
converting the image signal into a differential signal satisfying the mini-lvds protocol;
and combining the differential signals with a preset control time sequence to drive the color ink screen.
2. The method of driving a color ink screen according to claim 1, wherein the step of converting the image signal into a differential signal satisfying the mini-lvds protocol comprises:
converting the image signal into a TTL parallel signal;
and converting the TTL parallel signals into differential signals meeting the mini-lvds protocol.
3. The method of driving a color ink screen according to claim 2, wherein the step of converting the TTL parallel signal into a differential signal satisfying the mini-lvds protocol comprises:
converting the data signal and the protocol time sequence in the TTL parallel signal into differential data signals meeting the mini-lvds protocol;
converting clock signals in the TTL parallel signals into differential clock signals meeting the mini-lvds protocol;
the differential data signal and the differential clock signal are combined into a differential signal that satisfies the mini-lvds protocol.
4. A method of driving a color ink screen according to claim 3, wherein the step of converting the clock signal in the TTL parallel signal into a differential clock signal satisfying the mini-lvds protocol comprises:
dividing the clock signal in the TTL parallel signal to obtain a clock frequency division signal;
the clock frequency division signal is converted into a differential clock signal meeting the mini-lvds protocol.
5. The method of driving a color ink screen according to claim 1, wherein the step of simulating a protocol timing for driving the color ink screen according to mini-lvds protocol comprises:
Converting the initial image logic signal into a TTL logic signal according to a mini-lvds protocol;
converting the TTL logic signal into a target image logic signal;
and simulating a protocol time sequence for driving the color ink screen according to the target image logic signal.
6. The method of driving a color ink screen according to claim 1, wherein before the step of combining the differential signals with a preset control timing to drive the color ink screen, the method further comprises:
simulating an initial control time sequence for driving the color ink screen;
converting the initial control timing sequence into a TTL control timing sequence;
the step of combining the differential signals with a preset control time sequence to drive the color ink screen comprises the following steps:
the differential signals are combined with the TTL control timing to drive the color ink screen.
7. The method of driving a color ink screen according to claim 1, wherein before the step of combining the protocol timing with preset image data to obtain an image signal, the method further comprises:
performing pixel comparison on an image to be displayed and a current display image of the color ink screen device to obtain an index value;
Inquiring index waveform file data corresponding to the index value in a preset waveform file, and taking the index waveform file data as preset image data.
8. A driving device of a color ink screen, characterized in that the driving device of the color ink screen comprises:
the protocol time sequence simulation module is used for simulating a protocol time sequence for driving the color ink screen according to a mini-lvds protocol and combining the protocol time sequence with preset image data to obtain an image signal;
the signal conversion module is used for converting the image signal into a differential signal meeting the mini-lvds protocol;
and the driving module is used for combining the differential signals with a preset control time sequence to drive the color ink screen.
9. A terminal device, characterized in that the terminal device comprises: a memory, a processor and a driver of a color ink screen stored on the memory and executable on the processor, which driver of a color ink screen, when executed by the processor, implements the steps of the method of driving a color ink screen according to any one of claims 1 to 7.
10. A storage medium, wherein a driver of a color ink screen is stored on the storage medium, and the driver of the color ink screen, when executed by a processor, implements the steps of the method for driving a color ink screen according to any one of claims 1 to 7.
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