CN109828686B - Control method and control device of touch display screen - Google Patents
Control method and control device of touch display screen Download PDFInfo
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- CN109828686B CN109828686B CN201910038845.2A CN201910038845A CN109828686B CN 109828686 B CN109828686 B CN 109828686B CN 201910038845 A CN201910038845 A CN 201910038845A CN 109828686 B CN109828686 B CN 109828686B
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Abstract
The application discloses a control method and a control device of a touch display screen. The control method of the touch display screen comprises the following steps: generating a display synchronization signal and a touch synchronization signal; when the display synchronization signal is in an effective state, providing a display scanning signal to the touch display screen according to the cache data, and keeping the touch synchronization signal in an ineffective state; and when the display synchronous signal is in an invalid state, providing a touch scanning signal to the touch display screen according to the touch synchronous signal, wherein the touch synchronous signal is kept in the valid state, and the frequency of the display scanning signal is irrelevant to that of the touch scanning signal. According to the control method, the touch display screen is controlled to perform touch display through the display synchronous signal and the touch synchronous signal, so that the display scanning frequency can be dynamically changed according to actual needs, the touch scanning frequency is kept unchanged, and the speed and the accuracy of touch detection can be improved while a display picture is optimized.
Description
Technical Field
The invention relates to the technical field of display, in particular to a control method and a control device of a touch display screen.
Background
With the advancement of technology, touch display technology is increasingly applied to various fields, and the requirement for touch display quality is also increasingly high. A conventional touch display panel includes a touch display panel, on which a display panel and a touch panel are integrated, and a control device. In the prior art, Touch and Display Driver Integration (TDDI) technology is adopted to integrate Touch control and Display Driver into one chip, as shown in fig. 1. The touch display system shown in fig. 1 includes a display host 100, a control device 200, and a touch display screen 300, and the control device 200 includes a display driving module 201 and a touch control module 202. The display driving module 201 and the touch control module 202 are respectively used for performing display driving and touch detection on the touch display screen 300, and the touch detection and the display driving are performed in a time-sharing manner, so as to avoid interference of the display driving on the touch detection. That is, when the display driving is performed, the touch detection is suspended; when touch detection is performed, display driving is suspended. This approach typically requires that the touch sensing and display driving be synchronized, with the touch sensing frequency and display frequency being in a fixed proportional relationship. For example, if the display frequency is 60Hz, the touch detection frequency is fixed at 60 or 120 Hz. Due to the need to optimize the display effect, the display frequency needs to be dynamically adjusted, for example, dynamically switched between 30Hz and 90Hz, and then the touch detection frequency also changes dynamically, which has a negative effect on the speed and accuracy of touch detection. Therefore, it is desirable to further improve the control method and the control device of the touch display screen in the prior art to solve the above problems.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a control method and a control device for a touch display screen, in which the frequency of a display scan signal is not correlated with the frequency of a touch scan signal, so that the frequency of the display scan can be dynamically changed according to actual needs, and the frequency of the touch scan is kept unchanged.
According to an aspect of the present invention, there is provided a control method of a touch display screen, including: generating a display synchronization signal and a touch synchronization signal; when the display synchronization signal is in an effective state, providing a display scanning signal to the touch display screen according to the cache data, wherein the touch synchronization signal is kept in an ineffective state; and when the display synchronization signal is in an invalid state, providing a touch scanning signal to the touch display screen according to the touch synchronization signal, wherein the touch synchronization signal is kept in an valid state, and the frequency of the display scanning signal is irrelevant to that of the touch scanning signal.
Preferably, when the display synchronization signal is in an inactive state, the frequency of the touch scan signal is the same as the frequency of the touch synchronization signal.
Preferably, the method further comprises the following steps: and generating a mode switching signal, wherein when the mode switching signal represents a display mode, the display synchronous signal is kept in an effective state, and the touch synchronous signal is kept in an ineffective state.
Preferably, the method further comprises the following steps: when the display synchronization signal is invalid, buffering display data to obtain the buffered data.
Preferably, a buffer parameter is set according to the invalid time of the display synchronization signal and the transmission speed of the display data.
Preferably, the caching parameter comprises a caching depth.
According to another aspect of the present invention, there is provided a control apparatus for a touch display screen, including: the first control module is used for providing a display scanning signal for the touch display screen according to the cache data; the second control module is used for providing a touch scanning signal for the touch display screen according to the touch synchronization signal; and a synchronization signal generation module, configured to send a display synchronization signal to the first control module and send the touch synchronization signal to the second control module, where when the display synchronization signal is in an active state, the first control module is turned on to provide the display scanning signal, and the touch synchronization signal is kept in an inactive state.
Preferably, a frequency of the touch scan signal is the same as a frequency of the touch sync signal.
Preferably, the method further comprises the following steps: the micro control unit is used for providing a mode switching signal for the synchronous signal generation module, when the mode switching signal represents a touch display mode, the synchronous signal generation module generates the touch synchronous signal in an effective state when the display synchronous signal is in an ineffective state, generates the touch synchronous signal in an ineffective state when the display synchronous signal is in an effective state, and when the mode switching signal represents a display mode, the synchronous signal generation module generates the touch synchronous signal in an ineffective state when the display synchronous signal is in an effective state.
Preferably, the method further comprises the following steps: the buffer is connected with the first control module and used for receiving display data and obtaining the buffer data according to the display data, when the display synchronization signal is valid, the buffer receives the display data and obtains the buffer data, the first control module extracts the buffer data from the buffer, and when the display synchronization signal is invalid, the buffer continuously receives and buffers the display data to obtain the buffer data.
Preferably, the buffer comprises a First In First Out (FIFO) memory.
According to the control method and the control device of the touch display screen, the synchronous signal generating module is adopted to respectively provide the display synchronous signal and the touch synchronous signal for the first control module and the second control module, so that when touch detection is required, display driving and touch detection can be alternately carried out. The display scanning signal is provided by the display host, and the touch scanning signal is provided by the synchronous signal generating module, so that the frequency of touch scanning can be kept unchanged, the frequency of display scanning can be dynamically changed according to actual needs, and the problems of inaccurate detection and slow detection caused by the change of the touch scanning frequency due to the change of the display scanning frequency are solved.
Furthermore, according to the control method and the control device of the touch display screen, the buffer is arranged between the display host and the display driving chip, and the buffer continuously receives display data during the stop period of the first control module, so that the operation speed of the first control module is accelerated.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:
fig. 1 illustrates a connection structure diagram of a touch display system according to the related art.
Fig. 2 illustrates an equivalent circuit diagram of a display panel according to an embodiment of the present invention.
Fig. 3 illustrates an equivalent circuit diagram of a touch panel according to an embodiment of the present invention.
Fig. 4 is a schematic view illustrating a connection structure of a touch display system according to an embodiment of the present invention.
Fig. 5 shows a signal timing diagram of a control device according to an embodiment of the invention.
Fig. 6 shows a flow chart of a control method according to an embodiment of the invention.
Description of the reference numerals
100 display host
200 control device
201 display driving module
202 touch control module
210 first control Module
211 buffer
220 second control module
230 synchronous signal generating module
231 micro control unit
300 touch display screen
310 display panel
311 gate driving module
312 source driving module
320 touch panel
321 touch driving module
322 touch sensing module
Detailed Description
Various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Like elements in the various figures are denoted by the same or similar reference numerals. For purposes of clarity, the various features in the drawings are not necessarily drawn to scale.
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples.
A display panel 310 according to an embodiment of the present invention is illustrated in fig. 2 as an example of a liquid crystal display panel. As shown in fig. 2, the display panel 310 includes a gate driving module 311, a source driving module 312, a plurality of thin film transistors T, and a plurality of pixel capacitors C formed between pixel electrodes and a common electrodeLc. The plurality of thin film transistors T form an array. The gate driving module 311 is respectively connected to the gates of the thin film transistors T of the corresponding row via a plurality of gate scan lines G1 to Gm, and is configured to provide gate voltages G1 to Gm in a scanning manner, so as to gate the thin film transistors of different rows in one image frame period. The source driving module 312 is connected to the sources of the tfts T in the corresponding row through a plurality of source data lines S1 to Sn, respectively, and is configured to provide gray scale voltages corresponding to gray scales to the tfts T in each row when the tfts T in each row are turned on. Wherein m and n are natural numbers. The drains of the plurality of thin film transistors T are respectively connected to a corresponding onePixel capacitance CLc. In the edge-on state, the source driver 312 applies a gray-scale voltage to the pixel capacitor C via the source data line and the thin film transistor TLcThe above. Pixel capacitance CLcThe applied voltage acts on the liquid crystal molecules to change the orientation of the liquid crystal molecules to achieve a light transmittance corresponding to a gray scale. To maintain the voltage between the update periods of the pixel, the pixel capacitor CLcThe storage capacitor Cs may be connected in parallel to obtain a longer holding time.
In the embodiment, the liquid crystal display panel is taken as an example to obviously illustrate the internal structure and the connection relationship of the panel, but the display panel of the invention is not limited to the liquid crystal display panel.
Fig. 3 illustrates a touch panel 320 according to an embodiment of the invention by using capacitive touch as an example. As shown in fig. 3, the touch panel 320 includes a touch driving module 321, a touch sensing module 322, and a plurality of sensing capacitances C formed between the excitation electrodes and the sensing electrodes. The plurality of sensing capacitors C form an array. Touch driver module 321 is connected to the excitation electrodes of all rows via scan lines TX1 to TXm for providing excitation signals in a scanning manner, so as to sequentially provide excitation signals to the excitation electrodes of different rows in one touch frame period. The touch sensing module 322 is connected to the sensing electrodes of all columns via the sensing lines RX1 to RXn, so as to receive the touch sensing signals of the corresponding columns. Wherein m and n are natural numbers. The touch driving module 321 generates an ac electrical signal as an excitation signal, for example, and the touch sensing module 322 receives a touch sensing signal in the form of an ac electrical signal, for example, detects a current value according to the touch sensing signal, and further obtains a capacitance value of an intersection of the driving electrode and the sensing electrode according to the magnitude of the current value, so as to determine whether a touch action is generated at the point.
Although m and n are used as examples to describe the number of traces in the display panel and the touch panel, it should be clear to those skilled in the art that the above is only for convenience of description, and the number of traces in the display panel and the touch panel is not necessarily the same in practical applications. In addition, the present embodiment only uses mutual capacitive touch as an example to explain the structure and the operation principle of the touch panel, but it should be clear to those skilled in the art that the above is only an example of the touch panel, and the touch panel of the present invention is not limited thereto.
Fig. 4 is a schematic view illustrating a connection structure of a touch display system according to an embodiment of the present invention.
As shown in fig. 4, the touch display system includes a display host 100, a control device 200, and a touch display screen 300. The display host 100 is connected to the touch display screen 300 via the control device 200.
The display host 100 is used to generate a control signal and display data corresponding to an image to be displayed on the touch display screen 300, and supply the display data and the control signal to the control device 200. The display host 100 serves to transmit display data and control signals to the control device 200 via an interface.
The control device 200 is used to drive the touch display screen 300 based on the control signal and the display data transmitted from the display host 100. The control device 200 may process the display data based on the control signal to generate and transmit an image signal to the touch display screen 300.
The touch display screen 300 includes, for example, a touch panel and a display panel integrated together, and the integration manner may be selected according to needs, such as but not limited to on-cell, in-cell, and so on. The display panel is provided with the thin film transistor, the pixel electrode, the common electrode and corresponding wiring, and the touch panel is provided with the excitation electrode, the induction electrode and corresponding wiring. In alternative embodiments, the touch display screen 300 may include a separate touch panel and display panel.
In this embodiment, the control device 200 includes a display driving system, a touch control system, and a control module.
The display driving system includes a first control module 210 and a buffer 211.
The display host 100 is connected to the first control module 210 via the buffer 211, the display host 100 transmits the display data to the buffer 211 for storage, and the buffer 211 buffers the display data and obtains the buffered data. The first control module 210 is, for example, a display driving module, and the first control module 210 extracts buffer data from the buffer 211 and obtains a control signal from the control module. The control signal includes, for example, a display synchronization signal, and the buffer 211 is, for example, a first-in first-out memory. The first control module 210 is connected to the touch display screen 300 to provide a display scan signal to the touch display screen 300 and drive the touch display screen 300. The display host 100 provides the buffer 211 with display data, the buffer 211 receives the display data and provides the buffer data to the first control module 210 according to the display data, the first control module 210 provides the touch display 300 with a display scan signal according to the buffer data, and the touch display 300 performs display scan according to the display scan signal, so that the display host 100 controls the display scan frequency of the first control module 210.
The buffer 211 is used for extracting the buffer data from the buffer 211 when the display synchronization signal is in an invalid state, and the buffer 211 continues to receive and buffer the display data when the system is in the touch detection mode. The depth of the buffer 211 is determined, for example, based on the maximum time of the one-touch detection validity period and the speed of display data transmitted from the display host to the control device.
The touch control system includes a second control module 220. The second control module 220 is connected to the touch display screen 300, and configured to provide a touch scan signal to the touch display screen 300 to detect a touch action on the touch display screen 300, and receive a touch sensing signal from the touch panel to generate a touch control signal. The second control module 220 is, for example, a touch control module, and the touch control module includes, for example, a touch signal receiving module, a touch information obtaining module, and a display control module. For example, a touch sensor on the touch panel converts a touch action into a touch sensing signal, so that the touch sensing signal is received by the touch signal receiving module. The touch information acquisition module is used for acquiring information related to touch coordinates from the touch sensing signal, for example, coordinate information including gesture information or touch points. The display control module is used for controlling the display screen to display based on the information related to the touch coordinate. In an alternative embodiment, the second control module 220 includes, for example, a touch signal receiving module and a transmitting module, and the transmitting module is used for transmitting the touch sensing signal to the display host.
The control module includes a synchronization signal generation module 230 and a Micro Controller Unit (MCU) 231. The micro control unit 231 is configured to provide a mode switching signal to the synchronization signal generating module 230 to provide the mode switching signal to the synchronization signal generating module 230, where the mode switching signal includes a touch display mode signal and a display mode signal. The synchronization signal generation module 230 is configured to provide the display synchronization signal and the touch synchronization signal to the first control module 210 and the second control module 220, respectively. When the display synchronization signal is in an active state, the first control module 210 is turned on to provide the display scan signal to the touch display screen 300, and the touch synchronization signal remains in an inactive state to turn off the second control module 220. In this embodiment, when the display synchronization signal is invalid and the touch detection signal is valid, the second control module 220 provides the touch scan signal to the touch display screen 300, and the touch display screen 300 performs touch scan according to the touch scan signal, so that the frequency of performing touch scan is the frequency of the touch synchronization signal.
Fig. 5 shows a signal timing diagram of a control apparatus according to an embodiment of the present invention.
At the stage T1, i.e. when the mode switching signal indicates the display mode, for example, after the control device completes the initial power-on or the reset is finished, the display synchronization signal output by the synchronization signal generation module is kept in the active state, and the touch synchronization signal is kept in the inactive state. The display data received by the control device is buffered in the buffer by a certain depth and then transmitted to the first control module.
At the stage T2, that is, when the mode switching signal indicates the touch display mode, the mcu triggers the sync signal generating module to send the display sync signal and the touch sync signal to the first control module and the second control module, respectively. The states of the display synchronization signal and the touch synchronization signal are switched between T21 and T22, and the synchronization signal generation module generates the touch synchronization signal in an active state when the display synchronization signal is in an inactive state.
At stage T21, i.e. during the period when the touch synchronization signal is active, the second control module provides a touch scan signal to the touch display screen to perform touch detection on the touch display screen in full screen or a part of the screen. At the moment, the first control module stops extracting data from the buffer, simultaneously, the transmitted display data is buffered in the buffer, and after the touch validity period is ended, touch detection is stopped.
At stage T22, i.e., during the period when the display synchronization signal is active, the synchronization signal generation module generates the touch synchronization signal in an inactive state when the display synchronization signal is in an active state. And the first control module restarts to extract the cache data from the cache and sends a display scanning signal to the touch display screen, wherein the display scanning signal is obtained from the display data provided by the display host.
It is to be understood that the present invention is not limited thereto, and in this embodiment, the T21 phase and the T22 phase are alternately performed. In an alternative embodiment, there may also be a time interval between the T21 phase and the T22 phase during which both the display sync signal and the touch sync signal remain in an inactive state, the time interval being greater than 0.
It should be noted that fig. 5 is suitable for illustrative explanation, and the sizes, frequencies, and effective times of the touch synchronization signal and the display synchronization signal, and the size proportional relationship and the effective time proportional relationship of the touch synchronization signal and the display synchronization signal cannot be explained accordingly.
Fig. 6 illustrates a flowchart of a touch display control method according to an embodiment of the present invention.
In step S1, it is determined whether touch detection is necessary. If so, go to step S3; if not, step S2 is performed. For example, the overall control system of the device determines whether touch detection is required, and sends the result of the determination to the micro control unit. For example, in the process of starting up the mobile phone, it is determined that touch detection is not needed, and in the process of operating the touch display device, it is determined that touch detection is needed.
In step S2, the display synchronization signal in the active state is continuously generated, and display driving is performed. The micro control unit controls the synchronous signal generation module to provide a display synchronous signal to the first control module, the display synchronous signal is always in an effective state, and the touch synchronous signal is turned off. The first control module extracts the cache data from the cache and provides a display scanning signal for the touch display screen, and the first control module obtains the display scanning signal according to the cache data, so that the frequency of display scanning can be dynamically changed according to the parameters of the cache data.
In step S3, a display synchronization signal and a touch synchronization signal are generated; when the display synchronization signal is in an effective state, providing a display scanning signal to the touch display screen according to the display data, and keeping the touch synchronization signal in an ineffective state; and when the display synchronization signal is in an invalid state, providing a touch scanning signal to the touch display screen according to the touch synchronization signal, and keeping the touch synchronization signal in the valid state. The synchronous signal generating module provides a display synchronous signal and a touch synchronous signal to the first control module and the second control module respectively, so that display scanning and touch scanning are performed alternately. During the touch scanning period, the second control module performs touch detection on the full screen or a part of the screen of the touch display screen, the frequency of the touch scanning of the second control module is determined by the frequency of the touch synchronization signal, and the frequency of the touch synchronization signal is kept fixed, so that the frequency of the touch scanning is also kept fixed. At the moment, the first control module stops extracting the cache data from the cache, and simultaneously the incoming display data is cached in the cache. During the display scanning period, the first control module restarts to extract data from the buffer, the display scanning signal of the first control module is provided by the display host, and the display driving frequency is dynamically changed according to actual needs. The touch display screen respectively performs display scanning and touch scanning according to the display scanning signal and the touch scanning signal, and the frequency of the display scanning signal and the frequency of the touch scanning signal are irrelevant, so that the frequency of performing the display scanning is irrelevant to the frequency of performing the touch detection.
While embodiments in accordance with the invention have been described above, these embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention and various embodiments with various modifications as are suited to the particular use contemplated. The invention is limited only by the claims and their full scope and equivalents.
Claims (11)
1. A control method of a touch display screen is characterized by comprising the following steps:
generating a display synchronization signal and a touch synchronization signal;
when the display synchronization signal is in an effective state, providing a display scanning signal to the touch display screen according to the cache data, wherein the touch synchronization signal is kept in an ineffective state;
providing a touch scanning signal to the touch display screen according to the touch synchronization signal when the display synchronization signal is in an invalid state, the touch synchronization signal being maintained in an valid state,
the frequency of the touch synchronization signal is kept fixed, so that the frequency of the touch scanning signal is also kept fixed, the frequency of the display scanning signal is irrelevant to the frequency of the touch scanning signal, and when the frequency of the display scanning signal is dynamically changed, the frequency of the touch scanning signal is kept unchanged.
2. The control method according to claim 1, wherein when the display synchronization signal is in an inactive state, the frequency of the touch scan signal is the same as the frequency of the touch synchronization signal.
3. The control method according to claim 1, characterized by further comprising:
a mode-switching signal is generated and,
when the mode switching signal represents a display mode, the display synchronization signal is kept in an effective state, and the touch synchronization signal is kept in an ineffective state.
4. The control method according to claim 1, characterized by further comprising:
when the display synchronization signal is invalid, buffering display data to obtain the buffered data.
5. The control method according to claim 4, wherein a buffer parameter is set in accordance with an invalid time of the display synchronization signal and a transmission speed of the display data.
6. The control method of claim 5, wherein the buffer parameter comprises a buffer depth.
7. A control device for a touch display screen, comprising:
the first control module is used for providing a display scanning signal for the touch display screen according to the cache data;
the second control module is used for providing a touch scanning signal for the touch display screen according to the touch synchronization signal; and
a synchronization signal generation module for sending a display synchronization signal to the first control module and sending the touch synchronization signal to the second control module,
wherein when the display synchronization signal is in an active state, the first control module is turned on to provide the display scanning signal, the touch synchronization signal is maintained in an inactive state,
when the display synchronization signal is in an invalid state, the second control module is turned on to provide the touch scanning signal, the touch synchronization signal is kept in an valid state,
the frequency of the touch synchronization signal is kept fixed, so that the frequency of the touch scan signal is also kept fixed, the frequency of the display scan signal is irrelevant to the frequency of the touch scan signal, and the frequency of the touch scan signal is kept unchanged when the frequency of the display scan signal is dynamically changed.
8. The control device of claim 7, wherein a frequency of the touch scan signal is the same as a frequency of the touch sync signal.
9. The control device according to claim 7, characterized by further comprising: a micro control unit for providing a mode switching signal to the synchronization signal generation module,
when the mode switching signal represents a touch display mode, the synchronization signal generation module generates the touch synchronization signal in an active state when the display synchronization signal is in an inactive state, and generates the touch synchronization signal in an inactive state when the display synchronization signal is in an active state,
when the mode switching signal represents a display mode, the synchronization signal generation module generates the touch synchronization signal in an invalid state when the display synchronization signal is in an effective state.
10. The control device according to claim 7, characterized by further comprising:
the buffer is connected with the first control module and used for receiving display data and obtaining the buffer data according to the display data,
when the display synchronous signal is effective, the buffer receives the display data and obtains the buffer data, the first control module extracts the buffer data from the buffer,
when the display synchronization signal is invalid, the buffer continuously receives and buffers the display data to obtain the buffered data.
11. The control device of claim 10, wherein the buffer comprises a first-in-first-out memory.
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| US11287925B2 (en) * | 2019-09-19 | 2022-03-29 | Novatek Microelectronics Corp. | Electronic circuit adapted to drive a display panel with touch sensors and operation method thereof |
| CN111968582B (en) * | 2020-01-14 | 2022-04-15 | Oppo广东移动通信有限公司 | Display screen frequency conversion method, DDIC chip, display screen module and terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103970388A (en) * | 2013-01-28 | 2014-08-06 | 瑞萨Sp驱动器公司 | Touch-display control device and personal data assistant |
| CN108227980A (en) * | 2016-12-13 | 2018-06-29 | 乐金显示有限公司 | Electronic device and its driving method with touch sensor |
| CN108288449A (en) * | 2017-01-09 | 2018-07-17 | 义隆电子股份有限公司 | Touch display system and operation method for touch display system |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103970388A (en) * | 2013-01-28 | 2014-08-06 | 瑞萨Sp驱动器公司 | Touch-display control device and personal data assistant |
| CN108227980A (en) * | 2016-12-13 | 2018-06-29 | 乐金显示有限公司 | Electronic device and its driving method with touch sensor |
| CN108288449A (en) * | 2017-01-09 | 2018-07-17 | 义隆电子股份有限公司 | Touch display system and operation method for touch display system |
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