TWI679895B - Electronic device and image synchronization method - Google Patents

Abstract

An image synchronization method suitable for a TV wall system includes: generating a first counting time point and a second counting time point; and sending a first control signal to a first time point with a first time parameter at the first counting time point. An image switching device to enable the first image switching device to switch the image data source according to the first time parameter; and sending a second control signal with a second time parameter to a second image switching at the second counting time point A device so that the second image switching device switches the image data source according to the second time parameter; wherein the first image switching device and the second image switching device synchronize and correspondingly output respective image data after switching the image data source to A first display group and a second display group of the video wall system.

Description

Electronic device and image synchronization method

This case relates to an electronic device and an image synchronization method. Specifically, this case relates to an electronic device and a video synchronization method related to a video wall.

With the development of electronic technology, display devices have been widely used in people's lives.

In some applications (such as a video wall), multiple display devices need to perform image operations (such as image switching or starting image display) simultaneously. However, when the number of display devices increases, it becomes extremely difficult for these display devices to perform image operations synchronously due to conditions such as delivery delay or processing delay. Therefore, a solution should be proposed.

An embodiment of the present invention relates to an electronic device. According to an embodiment of the present invention, the electronic device is suitable for a TV wall, and the TV wall includes multiple Displays including a first display group and a second display group. The electronic device includes a counter, a transmission interface, and a processing element. The counter generates a first counting time point and a second counting time point. The processing element is coupled to the counter and the transmission interface, and sends a first control signal having a first time parameter to a first controlled device through the transmission interface at the first counting time point, and at the second counting time, At the counting time point, a second control signal having a second time parameter is sent to a second controlled device through the transmission interface. The first controlled device and the second controlled device synchronously and correspondingly output a first image data and a second image data to the first display group according to the first time parameter and the second time parameter, respectively. And the second display group.

Another aspect of the present invention relates to an electronic device. According to an embodiment of the present invention, the electronic device is suitable for a TV wall. The TV wall includes a plurality of displays. The displays include a first display group and a second display group. The electronic device includes a first input terminal, a second input terminal, a plurality of output terminals, a matrix switching element, a counter, a transmission interface, and a processing element. The first input terminal receives a first image data. The second input terminal receives a second image data. The plurality of output terminals selectively output the first image data and the second image data to the first display group. The matrix switching element is coupled to the first input terminal, the second input terminal, and the output terminals. The counter generates a first counting time point and a second counting time point. The processing element generates a first control signal with a first time parameter at the first counting time point to control the matrix switching element, and at the second counting time point will have a second control signal with a second time parameter Via this The transmission interface is sent to a controlled device, and the controlled device outputs a third image data to the second display group according to the second time parameter. The processing element controls the matrix switching element to switch according to the first time parameter so that the output terminals switch the first image data output to the first display group to the second image data, and the second image data And the third image data is output to the first display group and the second display group synchronously and correspondingly.

Another aspect of the present invention relates to an image synchronization method. According to an embodiment of the present invention, the image synchronization method is applicable to a TV wall system. The TV wall system includes a TV wall, a first video switching device, and a second video switching device. The TV wall includes multiple displays. The display includes a first display group and a second display group. The image synchronization method includes: generating a first counting time point and a second counting time point; and sending a first time at the first counting time point. A first control signal of a parameter to the first image switching device so that the first image switching device switches an image data source according to the first time parameter; and sends a second time parameter having a second time parameter at the second counting time point. A second control signal is sent to the second image switching device, so that the second image switching device switches the image data source according to the second time parameter. The first image switching device and the second image switching device synchronously and correspondingly output respective image data to the first display group and the second display group after switching the image data source.

By applying the above embodiment, the first controlled device and the second controlled device can output image data to different display groups synchronously. In this way, different monitors in different monitor groups can synchronize The data is displayed.

10‧‧‧ electronic system

20, 40‧‧‧ controlled devices

20a‧‧‧Electronic device

DWL‧‧‧TV Wall

GP1, GP2‧‧‧ Display Group

DP1-DP6‧‧‧ Display

100, 100a‧‧‧ electronic device

110, 210‧‧‧ processing elements

120, 220‧‧‧Memory

130, 230‧‧‧ counters

140, 240‧‧‧ transmission interface

CTL1, CTL2‧‧‧Control signals

T1, T2‧‧‧Time parameters

t1, t2‧‧‧‧ counting time point

tout‧‧‧output time

IMD1-IMD3‧‧‧Image data

SW‧‧‧ Matrix Switching Element

IP1, IP2‧‧‧ Input

OP1, OP2‧‧‧ output

300‧‧‧ Method

S1-S3‧‧‧ Operation

FIG. 1 is a schematic diagram of an electronic device according to an embodiment of the present invention; FIG. 2 is a flowchart of an operation method according to an embodiment of the present invention; and FIG. 3 is a flowchart of the operation method according to an embodiment of the present invention. FIG. 4 is a schematic diagram of an electronic device according to another embodiment of the present invention; and FIG. 5 is a flowchart of an image synchronization method according to an embodiment of the present invention.

The following will clearly illustrate the spirit of the present disclosure with diagrams and detailed descriptions. Any person with ordinary knowledge in the technical field who understands the embodiments of the present disclosure can be changed and modified by the techniques taught in the present disclosure. It does not depart from the spirit and scope of this disclosure.

As used herein, "coupling" may refer to two or more components making direct physical or electrical contact with each other, or indirectly making physical or electrical contact with each other, and "coupling" may also refer to two or more The elements operate or act on each other.

Regarding the "first", "second", ..., etc. used herein, they do not specifically mean the order or order, nor are they used to limit the present invention. They are only used to distinguish elements described in the same technical terms or operating.

The terms "including", "including", "having", "containing" and the like used in this article are all open-ended terms, which means including but not limited to.

As used herein, "and / or" includes any and all combinations of the things described.

Regarding the terms used in this article, unless otherwise specified, each term usually has the ordinary meaning of being used in this field, the content disclosed here, and the special content. Certain terms used to describe this disclosure are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art on the description of this disclosure.

Regarding the terms "approximately" and "approximately" etc. used herein, they are generally used to refer to any numerical value or range that is close to the stated value or range, and this value or range will vary according to the different techniques involved, And its scope of interpretation is consistent with the broadest scope of interpretation of what ordinary people in the field can do to cover all variants or similar structures. In some embodiments, the range of minor variations or errors modified by such terms is 20%, 10% in some preferred embodiments, and 5% in some more preferred embodiments. In addition, the numerical values mentioned in this article all mean approximate values. Unless otherwise stated, the meanings of "approximately" and "about" are implied.

FIG. 1 is a schematic diagram of an electronic system 10 according to an embodiment of the present invention. In this embodiment, the electronic system 10 includes a video wall DWL, controlled devices 20 and 40, and an electronic device 100. The video wall DWL includes a plurality of displays DP1-DP6. The displays DP1-DP6 are divided into a first display group GP1 and a second display group GP2. In this embodiment, the controlled device The device 20 performs wired or wireless communication with the displays DP1-DP4 of the first display group GP1, and the controlled device 40 performs wired or wireless communication with the displays DP5-DP6 of the second display group GP2. In this embodiment, the electronic device 100 performs wired or wireless communication with the controlled devices 20 and 40. It should be noted that the numbers of the above-mentioned controlled devices, display groups, and displays are merely examples, and other numbers are also within the scope of this case. In addition, the number of displays in the first display group GP1 and the second display group GP2 may be the same as each other, and is not limited to the foregoing embodiment.

In one embodiment, the controlled devices 20 and 40 are, for example, image switching devices, but the present invention is not limited thereto. In one embodiment, the controlled devices 20 and 40 are, for example, video matrix switches, but the present invention is not limited thereto. In one embodiment, the electronic device 100 is, for example, a central control device that is independent of the controlled devices 20 and 40, but the present invention is not limited thereto. In one embodiment, the electronic device 100 can also be integrated into the controlled device 20 or the controlled device 40.

In this embodiment, the electronic device 100 includes a processing element 110, a memory 120, a counter 130, and a transmission interface 140. In this embodiment, the processing element 110 is coupled to the memory 120, the counter 130, and the transmission interface 140.

In an embodiment, the processing element 110 may be implemented by, for example, a central processing unit (CPU), a digital signal processor (DSP), and / or a microprocessor (MCU) and other components having signal processing capabilities. This is the limit. In one embodiment, the memory 120 may include one or more memory devices, wherein each memory device or a plurality of memory devices includes a computer-readable recording medium. The memory 120 may include a read-only memory Memory, flash memory, floppy disks, hard disks, CD-ROMs, pen drives, magnetic tapes, databases that can be accessed by the Internet, or those who are familiar with this technology can easily think of a computer-readable recording medium with the same functions. In one embodiment, the counter 130 may be implemented by a counting circuit or a counting program, but is not limited thereto. In an embodiment, the counter 130 may also be integrated as a part of the processing element 110, but not limited thereto. In an embodiment, the transmission interface 140 may be implemented by a wired transmission interface (such as an RS232 or RS485 interface) or a wireless transmission interface (such as a Bluetooth or WiFi interface), but the present invention is not limited to the above.

In one embodiment, the processing element 110 can run or execute various software programs and / or instruction sets stored in the memory 120 to perform various functions of the electronic device 100.

In one embodiment, the counter 130 is configured to generate a first counting time point and a second counting time point, and provide the first counting time point and the second counting time point to the processing element 110. The processing element 110 is configured to send the first control signal having the first time parameter to the controlled device 20 through the transmission interface 140 at the first counting time point, and pass the second control signal having the second time parameter to the second counting time point via The transmission interface 140 is sent to the controlled device 40.

In an embodiment, the controlled devices 20 and 40 respectively receive the first image data and the second image data (not shown), and output the first image synchronously and correspondingly according to the first time parameter and the second time parameter, respectively. The data and the second image data are sent to the displays DP1-DP4 in the first display group GP1 and the displays DP5-DP6 in the second display group GP2.

In this way, the display DP1-DP4 and the display DP5-DP6 can perform display operations synchronously and correspondingly (such as image switching or starting image display).

In order to make the description easy to understand, the following paragraphs will provide some operation examples with Figures 2 and 3, but this case is not limited to these operation examples.

Referring to FIG. 2, in the first operation example, the counter 130 generates a first counting time point t1 and a second counting time point t2, where the second counting time point t2 (for example, the 10th millisecond) is later than the first counting time point t1 (for example, the 5th millisecond). In this operation example, the processing element 110 sends the first control signal CTL1 and the second control signal CTL2 to the controlled devices 20 and 40 respectively and sequentially according to the first counting time point t1 and the second counting time point t2.

Specifically, in this operation example, the processing element 110 sends the first control signal CTL1 having the first time parameter T1 to the controlled device 20 via the transmission interface 140 at the first counting time point t1, so that the controlled device 20 The first image data IMD1 is output to the displays DP1-DP4 in the first display group GP1 according to the first time parameter T1, so that the displays DP1-DP4 perform a display operation according to the first image data IMD1.

In addition, the processing element 110 sends the second control signal CTL2 with the second time parameter T2 to the controlled device 40 through the transmission interface 140 at the second counting time point t2, so that the controlled device 40 outputs the first time signal according to the second time parameter T2. The second image data IMD2 to the display DP5-DP6 in the second display group GP2, so that the display DP5-DP6 performs a display operation according to the second image data IMD2.

In this operation example, the second time parameter T2 (for example, 295 milliseconds) is smaller than the first time parameter T1 (for example, 300 milliseconds), and the first time The difference between the parameter T1 and the second time parameter T2 (such as 300 milliseconds-295 milliseconds = 5 milliseconds) and the difference between the first counting time point t1 and the second counting time point t2 (such as the 10th millisecond-5th millisecond = 5 Milliseconds) is about the same. Therefore, even if the first control signal CTL1 and the second control signal CTL2 are transmitted at different time points, the controlled devices 20 and 40 can still output the first image data IMD1 and the second image data IMD2 to the first display in synchronization and correspondingly. The displays DP1-DP4 in the group GP1 and the displays DP5-DP6 in the second display group GP2.

For example, the controlled device 20 receives a first control signal CTL1 with a first time parameter T1 (for example, 300 milliseconds) at a first counting time point t1 (for example, 5 milliseconds), so the controlled device 20 is approximately outputting At the time point tout (such as the 305th millisecond (equivalent to the sum of the first count time point t1 and the first time parameter T1)), the output of the first image data IMD1 is performed. In other words, the processing element 110 notifies the controlled device 20 to output image data after 300 milliseconds by using the first time parameter T1.

The controlled device 40 receives the second control signal CTL2 with the second time parameter T2 (for example, 295 milliseconds) at the second counting time point t2 (for example, the 10th millisecond). Therefore, the controlled device 40 is about the output time point Tout (such as the 305th millisecond (equivalent to the sum of the second counting time point t2 and the second time parameter T2)) outputs the second image data IMD2. In other words, the processing element 110 notifies the controlled device 40 to output image data after 295 milliseconds by using the second time parameter T2.

Therefore, in this operation example, the processing element 110 considers the delay in transmission of the first control signal CTL1 and the second control signal CTL2. The corresponding first time parameter T1 and the second time parameter T2 are set according to time, so even if the controlled devices 20 and 40 receive their respective control signals at different counting time points, they can still synchronize and correspondingly perform the first image data and Output of second image data.

Referring to FIG. 3, in the second operation example, the counter 130 generates a first counting time point t1 and a second counting time point t2, wherein the second counting time point t2 (for example, the 5th millisecond) and the first counting time point t1 (For example, the 5th millisecond) is almost the same. In this operation example, the processing element 110 sends the first control signal CTL1 and the second control signal CTL2 to the controlled devices 20 and 40 respectively and synchronously according to the first counting time point t1 and the second counting time point t2.

Specifically, in this operation example, the processing element 110 sends the first control signal CTL1 having the first time parameter T1 to the controlled device 20 via the transmission interface 140 at the first counting time point t1, so that the controlled device 20 The first image data IMD1 is output to the displays DP1-DP4 in the first display group GP1 according to the first time parameter T1, so that the displays DP1-DP4 perform a display operation according to the first image data IMD1.

In addition, the processing element 110 sends the second control signal CTL2 having the second time parameter T2 to the controlled device 40 at the second counting time point t2, so that the controlled device 40 outputs the first The second image data IMD2 to the display DP5-DP6 in the second display group GP2, so that the display DP5-DP6 performs a display operation according to the second image data IMD2.

In this operation example, the second time parameter T2 (for example, 300 milliseconds) and the first time parameter T1 (for example, 300 milliseconds) are substantially the same. borrow In this way, the controlled devices 20 and 40 can output the first image data IMD1 and the second image data IMD2 to the displays DP1-DP4 in the first display group GP1 and the displays in the second display group GP2 synchronously and correspondingly. DP5-DP6.

For example, the controlled device 20 receives a first control signal CTL1 with a first time parameter T1 (for example, 300 milliseconds) at a first counting time point t1 (for example, 5 milliseconds), so the controlled device 20 is approximately outputting At the time point tout (such as the 305th millisecond (equivalent to the sum of the first count time point t1 and the second time parameter T1)), the output of the first image data IMD1 is performed. The controlled device 40 receives the second control signal CTL2 with the second time parameter T2 (for example, 300 milliseconds) at the second counting time point t2 (for example, 5 milliseconds). Therefore, the controlled device 40 is at the output time point. Tout (such as the 305th millisecond (equivalent to the sum of the second counting time point t2 and the second time parameter T2)) outputs the second image data IMD2. Thereby, the controlled devices 20 and 40 output the first image data IMD1 and the second image data IMD2 synchronously and correspondingly.

In the second operation example, the transmission interface 140 may have a function of multicast or broadcast.

In an embodiment of the present case, when the controlled devices 20 and 40 complete the output preparation of the first image data and the second image data, the controlled devices 20 and 40 may return a ready completion signal. In an embodiment, the processing element 110 may determine whether to reset (eg, shorten) the first time parameter and the second time parameter according to the ready completion signal returned by the controlled device 20, 40, so that the controlled device 20, 40 Synchronously and correspondingly output the first image data and the second image data to the first display group GP1 according to the reset time parameters The displays DP1-DP4 in the middle and the displays DP5-DP6 in the second display group GP2.

In this way, the controlled devices 20 and 40 can accelerate the output of the first image data and the second image data.

For example, in the aforementioned first operation example (for example, corresponding to FIG. 2), if the processing element 110 has received the preparation completion signal from the controlled device 20 and 40 at the 50th millisecond, the processing is performed. The component 110 can accordingly decide whether to reset the first time parameter T1 to the third time parameter T3 (for example, 100 milliseconds) and reset the second time parameter T2 to the fourth time parameter T4 (for example, 95 milliseconds), so that the controlled device 20 outputs the first image data IMD1 according to the third time parameter T3, and causes the controlled device 40 to output the second image data IMD2 according to the fourth time parameter T4. The fourth time parameter T4 is smaller than the third time parameter T3, and the third time parameter T3 is smaller than the second time parameter T2.

For another example, in the foregoing second operation example (for example, corresponding to FIG. 3), if at the 50th millisecond, the processing element 110 has received the preparation completion signal from the controlled device 20, 40, then The processing element 110 can accordingly decide whether to reset the first time parameter T1 and the second time parameter T2 to the third time parameter T3 (for example, 100 milliseconds), so that the controlled devices 20 and 40 respectively output the first time parameter according to the third time parameter T3. An image data IMD1 and a second image data IMD2. The third time parameter T3 is smaller than the second time parameter T2.

In addition, in the above embodiment, the counter 130 may also generate a third counting time point and a fourth counting time point for the processing element 110 to send the third and fourth time points having the third and fourth time parameters via the transmission interface 140, respectively. Control signal. About the third and fourth counting time points and the third and fourth control points The details of the signal are substantially the same as the first and second counting time points and the first and second control signals, so they will not be repeated here.

It should be noted that the specific time values in the above-mentioned embodiments and operation examples are merely illustrative for description, and this case is not limited thereto.

FIG. 4 is a schematic diagram of an electronic system 10a according to another embodiment of the present invention. In this embodiment, the electronic system 10 a includes a video wall DWL, an electronic device 20 a, and a controlled device 40. In this embodiment, the TV wall DWL and the controlled device 40 are substantially the same as the TV wall DWL and the controlled device 40 of the electronic system 10 described above, so related details are not described herein.

In this embodiment, the electronic device 20a performs wired or wireless communication with the displays DP1-DP4 of the first display group GP1.

It should be noted that the number of controlled devices, display groups, and displays are only examples, and other numbers are also within the scope of this case. In addition, the number of displays in the first display group GP1 and the second display group GP2 may be the same as each other, and is not limited to the foregoing embodiment.

In one embodiment, the electronic device 20a is, for example, an image switching device, but the present invention is not limited thereto. In an embodiment, the electronic device 20a is, for example, a matrix video switcher, but the present invention is not limited thereto.

In this embodiment, the electronic device 20a includes a processing element 210, a memory 220, a counter 230, a transmission interface 240, a matrix switching element SW, a first input terminal IP1, a second input terminal IP2, and output terminals OP1-OP4. In this embodiment, the processing element 110 is coupled to the memory 120, the counter 130, the transmission interface 140, and the matrix switching element SW. In this embodiment, the matrix switching element SW is coupled to the first input terminal IP1 and the second input terminal. IP2, and output terminals OP1-OP4.

In an embodiment, the processing element 210 may be implemented by, for example, a central processing unit, a digital signal processor (DSP), and / or a microprocessor having a signal processing capability, but is not limited thereto. In one embodiment, the memory 220 may include one or more memory devices, where each memory device or a plurality of memory devices includes a computer-readable recording medium. The memory 220 may include a read-only memory, a flash memory, a floppy disk, a hard disk, a compact disk, a flash drive, a magnetic tape, a database accessible by a network, or a person skilled in the art can easily think about the same function The computer can read the recording media. In one embodiment, the counter 230 may be implemented by a counting circuit or a counting program, but is not limited thereto. In an embodiment, the counter 230 may also be integrated as a part of the processing element 210, but is not limited thereto. In one embodiment, the transmission interface 240 may be implemented by a wired transmission interface (such as an RS232 or RS485 interface) or a wireless transmission interface (such as a Bluetooth or WiFi interface), but the present invention is not limited to the above. In one embodiment, the matrix switching element SW may be implemented by a switching circuit or a switching program, but is not limited thereto. In one embodiment, the matrix switching element SW may also be integrated as a part of the processing element 210, but is not limited thereto.

In one embodiment, the processing element 210 can run or execute various software programs and / or instruction sets stored in the memory 220 to perform various functions of the electronic device 20a.

In one embodiment, the electronic device 20a receives the first image data IMD1 by using the first input terminal IP1, and receives the second image data IMD2 by using the second input terminal IP2. In one embodiment, the controlled device 40 receives the third image. Like information IMD3.

In one embodiment, the counter 230 is configured to generate a first counting time point and a second counting time point, and provide the first counting time point and the second counting time point to the processing element 210. The processing element 210 is configured to generate a first control signal with a first time parameter at a first counting time point, to control the matrix switching element SW to switch according to the first time parameter, so that the output terminals OP1-OP4 will output to the first display group. The first image data IMD1 of the displays DP1-DP4 in the group GP1 is switched to the second image data IMD2.

On the other hand, the processing element 210 is configured to send the second control signal with the second time parameter to the controlled device 40 via the transmission interface 240 at the second counting time point. The controlled device 40 receives the second control signal and outputs the third image data to the displays DP5-DP6 in the second display group GP2 according to the second time parameter.

Thereby, the second image data IMD2 and the third image data IMD3 can be synchronized and correspondingly output to the displays DP1-DP4 in the first display group GP1 and the displays DP5-DP6 in the second display group GP2, so that the display DP1-DP4 and display DP5-DP6 perform display operations synchronously and correspondingly (such as image switching and / or starting image display).

In order to make the description easy to understand, the following paragraphs will again provide some operation examples with Figures 2 and 3, but this case is not limited to these operation examples.

Referring to FIG. 2, in a third operation example, the counter 230 generates a first counting time point t1 and a second counting time point t2, where the second counting time point t2 (for example, the 10th millisecond) is later than the first counting time point t1 (e.g. 5 ms).

Initially, the processing element 210 can control the matrix switching element SW to provide the first image data IMD1 received by the first input terminal IP1 to the displays DP1-DP4. After the processing element 110 receives the first counting time point t1 and the second counting time point t2 generated by the counter 230, the processing element 110 can respectively generate a first time parameter according to the first counting time point t1 and the second counting time point t2. A first control signal CTL1 of T1 and a second control signal CTL2 having a second time parameter T2.

Specifically, in this operation example, the processing element 110 provides the first control signal CTL1 to the matrix switching element SW at the first counting time point t1, so that the matrix switching element SW will be provided to the display DP1 according to the first time parameter T1. -The first image data IMD1 of the DP4 is switched to the second image data IMD2 received by the second input terminal IP2, so that the display DP1-DP4 performs a display operation according to the second image data IMD2.

In addition, the processing element 110 provides a second control signal CTL2 to the controlled device 40 at the second counting time point t2, so that the controlled device 40 outputs the third image data IMD3 to the second display group GP2 according to the second time parameter T2. The display DP5-DP6, so that the display DP5-DP6 performs a display operation according to the third image data IMD3.

In this operation example, the second time parameter T2 (for example, 295 ms) is smaller than the first time parameter T1 (for example, 300 ms), and the difference between the first time parameter T1 and the second time parameter T2 (for example, 300 ms- 295 milliseconds = 5 milliseconds) and the difference between the first counting time point t1 and the second counting time point t2 (eg, 10th millisecond-5th millisecond = 5 milliseconds). With this, even if the first control The signal CTL1 and the second control signal CTL2 are sent to the matrix switching element SW and the controlled device 40 at different time points. The second image data IMD2 and the third image data IMD3 can still be synchronized and correspondingly output to the first display group GP1. The displays DP1-DP4 in the middle and the displays DP5-DP6 in the second display group GP2.

For example, the matrix switching element SW receives a first control signal CTL1 having a first time parameter T1 (for example, 300 milliseconds) at a first counting time point t1 (for example, 5 milliseconds), so the matrix switching element SW is approximately outputting The time point tout (such as the 305 millisecond (equivalent to the sum of the first counting time point t1 and the first time parameter T1)) switches the output first image data IMD1 to the second image data IMD2. The controlled device 40 receives the second control signal CTL2 with the second time parameter T2 (for example, 295 milliseconds) at the second counting time point t2 (for example, the 10th millisecond). Therefore, the controlled device 40 is approximately at the output time point. Tout (such as the 305th millisecond (equivalent to the sum of the second counting time point t2 and the second time parameter T2)) outputs the third image data IMD3. Thereby, the second image data IMD2 and the third image data IMD3 can be output synchronously and correspondingly.

Referring to FIG. 3, in the fourth operation example, the counter 230 generates a first counting time point t1 and a second counting time point t2, wherein the second counting time point t2 (for example, the 5th millisecond) and the first counting time point t1 (For example, the 5th millisecond) is almost the same.

Initially, the processing element 210 can control the matrix switching element SW to provide the first image data IMD1 received by the first input terminal IP1 to the displays DP1-DP4. The first count generated by the counter 230 is received at the processing element 110 After counting the time point t1 and the second counting time point t2, the processing element 110 can generate the first control signal CTL1 having the first time parameter T1 and the second time signal according to the first counting time point t1 and the second counting time point t2. The second control signal CTL2 of the parameter T2.

Specifically, in this operation example, the processing element 210 provides the first control signal CTL1 to the matrix switching element SW at the first counting time point t1, so that the matrix switching element SW will be provided to the display DP1 according to the first time parameter T1. -The first image data IMD1 of the DP4 is switched to the second image data IMD2 received by the second input terminal IP2.

In addition, the processing element 210 provides a second control signal CTL2 to the controlled device 40 at the second counting time point t2, so that the controlled device 40 outputs the third image data IMD3 to the second display group GP2 according to the second time parameter T2. The display DP5-DP6, so that the display DP5-DP6 performs a display operation according to the third image data IMD3.

In this operation example, the second time parameter T2 (for example, 300 milliseconds) and the first time parameter T1 (for example, 300 milliseconds) are substantially the same. Thereby, the second image data IMD2 and the third image data IMD3 can be synchronized and correspondingly output to the displays DP1-DP4 in the first display group GP1 and the displays DP5-DP6 in the second display group GP2.

For example, the matrix switching element SW receives a first control signal CTL1 having a first time parameter T1 (for example, 300 milliseconds) at a first counting time point t1 (for example, 5 milliseconds), so the matrix switching element SW is approximately outputting Time point tout (such as the 305th millisecond (equivalent to the sum of the first counting time point t1 and the first time parameter T1)) cuts the output first image data IMD1 Change to the second image data IMD2. The controlled device 40 receives the second control signal CTL2 with the second time parameter T2 (for example, 300 milliseconds) at the second counting time point t2 (for example, 5 milliseconds). Therefore, the controlled device 40 is at the output time point. Tout (such as the 305th millisecond (equal to the sum of the second counting time point t2 and the second time parameter T2)) outputs the second image data. Thereby, the second image data IMD2 and the third image data IMD3 can be output synchronously and correspondingly.

In the fourth operation example, the transmission interface 240 may have a function of multicast or broadcast.

In an embodiment of the present case, when the controlled device 40 completes the output preparation of the third image data IMD3, the controlled device 40 may return a ready completion signal. In an embodiment, the processing element 210 may determine whether to reset (eg, shorten) the first time parameter and the second time parameter according to the ready completion signal returned by the controlled device 40, so that the second image data IMD2 and the first image data The three image data IMD3 are synchronized and correspondingly output to the displays DP1-DP4 in the first display group GP1 and the displays DP5-DP6 in the second display group GP2 according to the reset time parameters, respectively.

In this way, the output of the second image data IMD2 and the third image data IMD3 can be accelerated.

For example, in the foregoing third operation example (for example, corresponding to FIG. 2), if the processing element 210 receives the preparation completion signal returned from the controlled device 40 at the 50th millisecond, the processing element 210 may respond accordingly To determine whether to reset the first time parameter T1 to the third time parameter T3 (for example, 100 milliseconds) and reset the second time parameter T2 to the fourth time parameter T4 (for example, 95 milliseconds) to The matrix switching element SW is caused to switch the first image data IMD1 provided to the display DP1-DP4 to the second image data IMD2 according to the third time parameter T3, and the controlled device 40 outputs the third image data IMD3 according to the fourth time parameter T4. . The fourth time parameter T4 is smaller than the third time parameter T3, and the third time parameter T3 is smaller than the second time parameter T2.

For another example, in the foregoing fourth operation example (for example, corresponding to FIG. 3), if the processing element 210 receives a preparation completion signal returned from the controlled device 40 at the 50th millisecond, the processing element 210 may Accordingly, it is determined whether to reset the first time parameter T1 and the second time parameter T2 to the third time parameter T3 (for example, 100 milliseconds), so that the matrix switching element SW will provide the first time parameter T1 to the first time of the display DP1-DP4 according to the third time parameter T3. An image data IMD1 is switched to the second image data IMD2, and the controlled device 40 is caused to output the third image data IMD3 according to the third time parameter T3. The third time parameter T3 is smaller than the second time parameter T2.

In addition, in the above embodiment, the counter 230 may also generate a third counting time point and a fourth counting time point for the processing element 210 to transmit third and fourth control signals having third and fourth time parameters, respectively. The details about the third and fourth counting time points and the third and fourth control signals are substantially the same as the first and second counting time points and the first and second control signals, so they are not repeated here.

It should be noted that the specific time values in the above-mentioned embodiments and operation examples are merely illustrative for description, and this case is not limited thereto.

The image synchronization method in FIG. 5 is provided below to provide more specific details of this case, but this case is not limited to the following embodiments.

It should be noted that this image synchronization method can be applied to electronic systems having the same or similar structure as shown in FIG. In order to make the description simple, the following describes the operation method according to an embodiment of the present invention using the electronic device 10 in FIG. 1 as an example, but the present invention is not limited to this application.

In addition, this image synchronization method can also be implemented as a computer program and stored in a non-transitory computer-readable recording medium, so that a computer or an electronic device can read the recording medium and execute a virtual reality method. Non-transitory computer-readable recording media can be read-only memory, flash memory, floppy disks, hard disks, optical disks, flash drives, magnetic tapes, databases that can be accessed by the network, or those skilled in the art can easily think And non-transitory computer with the same function can read the recording medium.

In addition, it should be understood that the operations of the image synchronization method mentioned in this embodiment can be adjusted according to actual needs, except for those specifically described in order, and can even be performed simultaneously or partially simultaneously.

Moreover, in different embodiments, these operations may be adaptively added, replaced, and / or omitted.

Referring to FIGS. 1 and 5, the image synchronization method 300 includes the following operations.

In operation S1, the electronic device 100 uses the counter 130 to generate a first counting time point and a second counting time point.

In operation S2, the processing element 110 sends a first control signal with a first time parameter to the first image switching device (such as the controlled device 20) at the first counting time point. In this embodiment, the controlled device 20 is used to switch different image data sources. For example, the controlled device 20 may receive a plurality of image data and output one of them to the display of the first display group GP1. DP1-DP4.

In an embodiment, the processing element 110 may send a first control signal to the controlled device 20, so that the controlled device 20 switches the source of the image data according to the first time parameter, and outputs the other of the received image data to The displays DP1-DP4 of the first display group GP1.

For specific details of the controlled device 20, reference may be made to the foregoing embodiment, and therefore will not be repeated here.

In operation S3, the processing element 110 sends a second control signal with a second time parameter to the first image switching device (such as the controlled device 40) at the second counting time point. In one embodiment, the controlled device 40 is used to switch different image data sources. For example, the controlled device 40 may receive a plurality of pieces of image data and output one of them to the displays DP5-DP6 of the second display group GP2.

In an embodiment, the processing element 110 may send a second control signal to the controlled device 40, so that the controlled device 40 switches the image data source according to the second time parameter, and outputs the other of the received image data to The displays DP5-DP6 of the second display group GP2.

For specific details of the controlled device 40, reference may be made to the foregoing embodiment, and thus will not be repeated here.

With the above operations, after the controlled devices 20 and 40 switch the image data source, they can simultaneously and correspondingly output their respective image data to the displays DP1-DP4 of the first display group GP1 and the displays of the second display group GP2. DP5-DP6. For example, the controlled devices 20 and 40 both output the switched image data at the 305 millisecond.

In one embodiment, the image synchronization method 300 further includes, before performing operations S2 and S3, adjusting the counters (not shown) in the controlled devices 20 and 40 to the same counting cycle. For example, the processing element 110 may respectively send instructions to the controlled devices 20 and 40 to set the counting period of the counters in the controlled devices 20 and 40 to 1 millisecond (ie, the counting frequency is 1000 Hz). Therefore, it is possible to avoid that the image data output is not synchronized due to different counting periods of the counters in the controlled devices 20 and 40.

In an embodiment, the second counting time point is later than the first counting time point, so that the first control signal and the second control signal are sequentially and correspondingly sent to the controlled devices 20, 40, and the second time parameter is less than The first time parameter is such that the controlled devices 20 and 40 switch the image data source synchronously. For details about this embodiment, reference may be made to the above-mentioned first operation example, so details are not described herein.

In another embodiment, the first counting time point and the second counting time point may be the same as each other, so that the first control signal and the second control signal are synchronously and correspondingly sent to the controlled devices 20, 40, and the first time The parameters and the second time parameters are the same as each other, so that the controlled devices 20 and 40 switch the image data source synchronously. For details about this embodiment, reference may be made to the above-mentioned second operation example, so it is not repeated here.

Furthermore, the processing element 110 may determine whether to reset (eg, shorten) the first time parameter and the second time parameter according to the ready completion signal returned by the controlled devices 20 and 40. For details about this embodiment, reference may be made to the previous paragraphs, and therefore will not be described here.

In summary, the present invention controls a plurality of controlled devices with the same counting period to output shadows at a predetermined time point by setting time parameters. Image data, so that different controlled devices can output image data synchronously, thereby improving the user's viewing experience.

Although the present invention has been disclosed as above by way of example, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and retouches without departing from the spirit and scope of the present invention. Therefore, the protection of the present invention The scope shall be determined by the scope of the attached patent application.

Claims (18)

An electronic device is suitable for a TV wall. The TV wall includes a plurality of displays. The displays include a first display group and a second display group. The electronic device includes a counter to generate a first count time. Point and a second counting time point; a transmission interface; and a processing element coupled to the counter and the transmission interface, at the first counting time point, a first control signal having a first time parameter is transmitted through the transmission The interface is sent to a first controlled device, and a second control signal with a second time parameter is sent to a second controlled device via the transmission interface at the second counting time point; wherein the first controlled device The device and the second controlled device respectively synchronously and correspondingly output a first image data and a second image data to the first display group and the second display according to the first time parameter and the second time parameter Group. The electronic device according to claim 1, wherein the first counting time point is the same as the second counting time point, and the first time parameter is the same as the second time parameter, so that the processing element sends the processing element through the transmission interface. The first control signal and the second control signal are sent to the first controlled device and the second controlled device simultaneously. The electronic device according to claim 2, wherein the processing element determines whether to reset the first time parameter and the second time according to a preparation completion signal returned by the first controlled device and the second controlled device. The time parameter becomes a third time parameter, so that the first controlled device and the second controlled device respectively synchronize and correspondingly output the first image data and the second image data to the third time parameter according to the third time parameter. For the first display group and the second display group, the third time parameter is smaller than the second time parameter. The electronic device according to claim 1, wherein the second counting time point is later than the first counting time point, and the second time parameter is smaller than the first time parameter, so that the processing element separately sets the processing element via the transmission interface. The first control signal and the second control signal are sequentially sent to the first controlled device and the second controlled device. The electronic device according to claim 4, wherein a difference between the first counting time point and the second counting time point is the same as a difference between the first time parameter and the second time parameter. The electronic device according to claim 4, wherein the processing element determines whether to reset the first time parameter and the second time according to a preparation completion signal returned by the first controlled device and the second controlled device. The time parameter becomes a third time parameter and a fourth time parameter, so that the first controlled device and the second controlled device synchronize and correspondingly output the according to the third time parameter and the fourth time parameter, respectively. The first image data and the second image data to the first display group and the second display group, the fourth time parameter is smaller than the third time parameter, and the third time parameter is smaller than the second time parameter. An electronic device is suitable for a television wall. The television wall includes a plurality of displays. The displays include a first display group and a second display group. The electronic device includes a first input terminal for receiving a first An image data; a second input terminal for receiving a second image data; a plurality of output terminals for selectively outputting the first image data and the second image data to the first display group; a matrix switching element, coupled Connected to the first input terminal, the second input terminal and the output terminals; a counter to generate a first counting time point and a second counting time point; a transmission interface; and a processing element at the first count A first control signal with a first time parameter is generated at a time point to control the matrix switching element, and a second control signal with a second time parameter is sent to a receiver via the transmission interface at the second counting time point. A control device that outputs a third image data to the second display group according to the second time parameter; wherein the processing element controls the matrix The switching element is switched according to the first time parameter so that the output terminals switch the first image data output to the first display group to the second image data, and the second image data and the third image data Is synchronized and correspondingly output to the first display group and the second display group. The electronic device according to claim 7, wherein the first counting time point is the same as the second counting time point, and the first time parameter is the same as the second time parameter. The electronic device according to claim 8, wherein the processing element determines whether to reset the first time parameter and the second time parameter to a third time parameter according to a preparation completion signal returned by the controlled device, Furthermore, the matrix switching element is controlled to switch according to the third time parameter so that the output terminals switch the first image data output to the first display group to the second image data, and the controlled device according to the third Time parameters to output the third image data to the second display group, the second image data and the third image data are simultaneously and correspondingly output to the first display group and the second display group, the The third time parameter is smaller than the second time parameter. The electronic device according to claim 7, wherein the second counting time point is later than the first counting time point, and the second time parameter is smaller than the first time parameter. The electronic device according to claim 10, wherein a difference between the first counting time point and the second counting time point is the same as a difference between the first time parameter and the second time parameter. The electronic device according to claim 10, wherein the processing element determines whether to reset the first time parameter and the second time parameter to a third time parameter according to a preparation completion signal returned by the controlled device, and A fourth time parameter, further controlling the matrix switching element to switch according to the third time parameter, so that the output terminals switch the first image data output to the first display group to the second image data, and the receiver The control device outputs the third image data to the second display group according to the fourth time parameter, and the second image data and the third image data are synchronized and correspondingly output to the first display group and the first display group; Two display groups, the fourth time parameter is smaller than the third time parameter, and the third time parameter is smaller than the second time parameter. An image synchronization method is applicable to a TV wall system. The TV wall system includes a TV wall, a first video switching device, and a second video switching device. The TV wall includes multiple displays, and the displays include a first A display group and a second display group, the image synchronization method includes: generating a first counting time point and a second counting time point; and sending a first counting time point with a first time parameter at the first counting time point A control signal to the first image switching device so that the first image switching device switches an image data source according to the first time parameter; and sending a second control signal with a second time parameter to the second counting time point to The second image switching device causes the second image switching device to switch the image data source according to the second time parameter; wherein the first image switching device and the second image switching device synchronize and correspondingly output after switching the image data source. Respective image data is sent to the first display group and the second display group. The image synchronization method according to claim 13, before sending the first control signal and the second control signal, further comprising: adjusting the counters in the first image switching device and the second image switching device to be the same Count cycle. The image synchronization method according to claim 14, wherein the first counting time point and the second counting time point are the same so that the first control signal and the second control signal are synchronized and correspondingly sent to the first image switch Device and the second image switching device, and the first time parameter and the second time parameter are the same so that the first image switching device and the second image switching device switch the image data source synchronously. The image synchronization method according to claim 14, wherein the second counting time point is later than the first counting time point so that the first control signal and the second control signal are sequentially and correspondingly sent to the first image The switching device and the second image switching device, and the second time parameter is smaller than the first time parameter so that the first image switching device and the second image switching device switch the image data source synchronously. The image synchronization method according to claim 16, wherein a difference between the first counting time point and the second counting time point is the same as a difference between the first time parameter and the second time parameter. The image synchronization method according to claim 13, wherein before the source of the image data is switched, whether to determine the first image switching device according to a ready completion signal generated by at least one of the first image switching device and the second image switching device A time parameter and the second time parameter are adjusted to a third time parameter, and the third time parameter is smaller than the first time parameter and the second time parameter.