CN113747201A - Image playing system and image data transmission device and method with synchronous data transmission mechanism - Google Patents
Image playing system and image data transmission device and method with synchronous data transmission mechanism Download PDFInfo
- Publication number
- CN113747201A CN113747201A CN202010461164.XA CN202010461164A CN113747201A CN 113747201 A CN113747201 A CN 113747201A CN 202010461164 A CN202010461164 A CN 202010461164A CN 113747201 A CN113747201 A CN 113747201A
- Authority
- CN
- China
- Prior art keywords
- data transmission
- primary
- image data
- timing
- time difference
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 251
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims description 20
- 208000032370 Secondary transmission Diseases 0.000 claims abstract description 25
- 208000032369 Primary transmission Diseases 0.000 claims abstract description 20
- 238000010586 diagram Methods 0.000 description 8
- 230000008054 signal transmission Effects 0.000 description 7
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000002372 labelling Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/23602—Multiplexing isochronously with the video sync, e.g. according to bit-parallel or bit-serial interface formats, as SDI
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
- H04N21/4307—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
An image data transmission device with a synchronous data transmission mechanism. The primary image data transmission circuit transmits a primary alignment signal and receives a secondary alignment signal at primary transmission and reception time points, respectively, to calculate a primary time difference, and makes a primary timing of the primary alignment signal as a primary data transmission timing. The secondary image data transmission circuit transmits a secondary alignment signal and receives a primary alignment signal at secondary transmission and reception time points, respectively, to calculate a secondary time difference, and makes a secondary timing of the secondary alignment signal adjusted by a timing adjustment amount, which adjusts the primary and secondary time differences to be equal, as a secondary data transmission timing. The primary and secondary image data transmission circuits perform synchronous image data transmission with the image data receiving device according to the primary and secondary data transmission timings.
Description
Technical Field
The present invention relates to image transmission technology, and more particularly, to an image playing system, and an image data transmission device and method with a synchronous data transmission mechanism.
Background
Some consumer electronics products, such as televisions and smart phones, are increasingly popular with consumers due to their entertainment properties, and therefore have increasingly higher specification requirements. Taking liquid crystal television as an example, the size of televisions in recent years has gradually grown from 50 inches to over 70 inches, as televisions with large screens can provide a better viewing experience.
On such a large-sized television, a plurality of image data transmission chips are often required to provide image data corresponding to different panel areas to the panel for playing. However, such a design requires that the image data transmission chip transmits the image data to the panel for playing in a synchronous manner. Therefore, a precise synchronous data transmission mechanism must be provided between the image data transmission chips, so that the panel can correctly receive and play the image data transmitted by the image data transmission chips.
Disclosure of Invention
In view of the foregoing, it is an object of the present invention to provide an image playing system and an image data transmission device and method with a synchronous data transmission mechanism, so as to improve the prior art.
An object of the present invention is to provide an image data transmission apparatus with a synchronous data transmission mechanism, wherein an embodiment of the image data transmission apparatus comprises: a primary image data transmission circuit and a secondary image data transmission circuit. The main image data transmission circuit is configured to: generating and transmitting a primary alignment signal at a primary transmission time point and receiving a secondary alignment signal at a primary reception time point; calculating a primary time difference between a primary transmission time point and a primary reception time point; and making the main timing of the main alignment signal as the main data transfer timing. The secondary image data transmission circuit is coupled to the primary image data transmission circuit and configured to: generating and transmitting a secondary alignment signal at a secondary transmission time point and receiving a primary alignment signal at a secondary reception time point; calculating a secondary time difference between the secondary transmission time point and the secondary reception time point; and adjusting the secondary timing of the secondary alignment signal by a timing adjustment amount to serve as the secondary data transmission timing, wherein the timing adjustment amount is configured to adjust the primary time difference and the secondary time difference to be equal. The primary image data transmission circuit and the secondary image data transmission circuit perform synchronous image data transmission with the image data receiving device according to the primary data transmission timing sequence and the secondary data transmission timing sequence respectively, so that the image data receiving device plays images accordingly.
Another objective of the present invention is to provide an image playing system, which includes: an image data receiving device and an image data transmitting device. The image data transmission device is coupled with the image data receiving device and comprises: a primary image data transmission circuit and a secondary image data transmission circuit. The main image data transmission circuit is configured to: generating and transmitting a primary alignment signal at a primary transmission time point and receiving a secondary alignment signal at a primary reception time point; calculating a primary time difference between a primary transmission time point and a primary reception time point; and making the main timing of the main alignment signal as the main data transfer timing. The secondary image data transmission circuit is coupled to the primary image data transmission circuit and configured to: generating and transmitting a secondary alignment signal at a secondary transmission time point and receiving a primary alignment signal at a secondary reception time point; calculating a secondary time difference between the secondary transmission time point and the secondary reception time point; and adjusting the secondary timing of the secondary alignment signal by a timing adjustment amount to serve as the secondary data transmission timing, wherein the timing adjustment amount is configured to adjust the primary time difference and the secondary time difference to be equal. The primary image data transmission circuit and the secondary image data transmission circuit perform synchronous image data transmission with the image data receiving device according to the primary data transmission timing sequence and the secondary data transmission timing sequence respectively, so that the image data receiving device plays images accordingly.
Another object of the present invention is to provide an image data transmission method with a synchronous data transmission mechanism, which is applied to an image data transmission device, and the embodiment includes: enabling the primary image data transmission circuit to generate and transmit a primary alignment signal at a primary transmission time point and receive a secondary alignment signal at a primary reception time point; the main image data transmission circuit calculates the main time difference between the main transmission time point and the main receiving time point; making the main image data transmission circuit to make the main time sequence of the main alignment signal as the main data transmission time sequence; enabling the secondary image data transmission circuit to generate and transmit a secondary alignment signal at a secondary transmission time point and receive a primary alignment signal at a secondary reception time point; making the secondary image data transmission circuit calculate the secondary time difference between the secondary transmission time point and the secondary reception time point; making the secondary image data transmission circuit make the secondary timing of the secondary alignment signal as the secondary data transmission timing after being adjusted by the timing adjustment amount, wherein the timing adjustment amount is configured to adjust the primary time difference and the secondary time difference to be equal; and enabling the primary image data transmission circuit and the secondary image data transmission circuit to perform synchronous image data transmission with the image data receiving device according to the primary data transmission timing sequence and the secondary data transmission timing sequence respectively, so that the image data receiving device plays images accordingly.
The features, operation and functions of the present invention will be described in detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of an image playback system according to an embodiment of the present invention;
FIG. 2A is a timing diagram illustrating the transmission of primary alignment signals and secondary alignment signals between primary and secondary video data transmission circuits according to one embodiment of the present invention;
FIG. 2B is a timing diagram illustrating the transmission of the primary alignment signal and the secondary alignment signal between the primary video data transmission circuit and the secondary video data transmission circuit according to another embodiment of the present invention;
FIG. 2C is a timing diagram illustrating the transmission of the primary alignment signal and the secondary alignment signal between the primary image data transmission circuit and the secondary image data transmission circuit according to another embodiment of the present invention; and
FIG. 3 is a flowchart illustrating a method for transmitting image data with a synchronous data transmission mechanism according to an embodiment of the present invention.
Description of the symbols:
100: image playing system
110: image data transmission device
120: image data receiving device
130A to 130B: image data transmission circuit
300: image data transmission method
S310 to S370: step (ii) of
ALA: primary alignment signal
ALB: secondary alignment signal
DL: delay time
PD: major time difference
PR: primary reception time point
PT: main transmission time point
SD: minor time difference
SR: secondary reception time point
ST: secondary transmission time point
Detailed Description
The embodiments are described in detail below with reference to the drawings, but the embodiments are only for explaining the invention and are not intended to limit the invention, and the description of the structural operation is not intended to limit the execution sequence thereof, and any structure resulting from the rearrangement of components and having equivalent functions is within the scope of the present application.
An object of the present invention is to provide an image playing system and an image data transmission device and method having a synchronous data transmission mechanism, which can determine a timing difference between a primary image data transmission circuit and a secondary image data transmission circuit through signal transmission and time difference between the two circuits, and further adjust the timing of the secondary image data transmission circuit to align the timing of the primary image data transmission circuit, thereby achieving the purpose of synchronous data transmission.
Please refer to fig. 1. Fig. 1 is a schematic diagram of an image playback system 100 according to an embodiment of the present invention. The video playback system 100 includes a video data transmission device 110 and a video data reception device 120.
In one embodiment, the video playback system 100 is, for example, but not limited to, a television. The image data transmission device 110 is a circuit configured to provide image data, and the image data reception device 120 is a panel configured to receive and play image data.
Under the trend of increasing panel size, the image data transmission device 110 often transmits a plurality of image data (not shown) to the image data receiving device 120 for displaying through different internal circuits and corresponding channels. Different image data correspond to different panel display regions, and may be received by different circuits and corresponding channels inside the data receiving device 120. Therefore, the image data transmission device 110 needs to have a synchronous data transmission mechanism, so that the image data receiving device 120 can receive and simultaneously display a plurality of image data signals according to a correct timing sequence to generate a correct picture.
The synchronous data transmission mechanism of the image data transmission device 110 will be described in more detail below.
The image data transmission device 110 includes: a primary video data transmission circuit 130A and a secondary video data transmission circuit 130B. The primary image data transmission circuit 130A is configured to generate and transmit a primary alignment signal ALA to the secondary image data transmission circuit 130B. The secondary image data transmission circuit 130B is configured to generate and transmit a secondary alignment signal ALB to the primary image data transmission circuit 130A. It should be understood that the terms "primary" and "secondary" are used herein only to distinguish between different circuits and signals transmitted thereby, and do not refer to differences in importance or quality of the circuits or signals themselves.
Please refer to fig. 2A. FIG. 2A is a timing diagram illustrating the transmission of the primary align signal ALA and the secondary align signal ALB between the primary video data transmission circuit 130A and the secondary video data transmission circuit 130B according to one embodiment of the present invention.
The primary alignment signal ALA and the secondary alignment signal ALB corresponding to the primary video data transmission circuit 130A are indicated by a bracket 130A in fig. 2, and the primary alignment signal ALA and the secondary alignment signal ALB corresponding to the secondary video data transmission circuit 130B are indicated by a bracket 130B in fig. 2.
The primary image data transmission circuit 130A is configured to generate and transmit a primary alignment signal ALA at a primary transmission time point PT and receive a secondary alignment signal ALB at a primary reception time point PR. Therefore, the main image data transmission circuit 130A can calculate the main time difference PD between the main transmission time point PT and the main reception time point PR.
Similarly, the secondary video data transmission circuit 130B is configured to generate and transmit the secondary alignment signal ALB at the secondary transmission time ST, and receive the primary alignment signal ALA at the secondary reception time SR. Therefore, the secondary video data transmission circuit 130B can calculate the secondary time difference SD between the secondary transmission time ST and the secondary reception time SR accordingly.
It should be noted that, since there is a delay in the signal transmission path between the primary video data transmission circuit 130A and the secondary video data transmission circuit 130B, there is a delay time DL between the primary transmission time point PT of the primary alignment signal ALA transmitted by the primary video data transmission circuit 130A and the secondary reception time point SR received by the secondary video data transmission circuit 130B. Generally, the delay time DL is determined by the distance of the signal transmission path. Similarly, the delay time DL is also provided between the secondary transmission time ST of the secondary alignment signal ALB transmitted by the secondary video data transmission circuit 130B and the primary reception time PR received by the primary video data transmission circuit 130A.
In the present embodiment, as shown in fig. 2A, the time point (primary transmission time point PT) when the primary image data transmission circuit 130A generates the primary alignment signal ALA is earlier than the time point (secondary transmission time point ST) when the secondary image data transmission circuit 130B generates the secondary alignment signal ALB.
In such a case, the primary time difference PD between the primary transmission time PT and the primary reception time PR is greater than the secondary time difference SD between the secondary transmission time ST and the secondary reception time SR.
Therefore, when the primary time difference PD is greater than the secondary time difference SD, it can be determined that the timing of the primary image data transmission circuit 130A for generating the primary alignment signal ALA (hereinafter referred to as primary timing) is earlier than the timing of the secondary image data transmission circuit 130B for generating the secondary alignment signal ALB (hereinafter referred to as secondary timing). Therefore, the secondary timing corresponding to the secondary alignment signal ALB can be aligned with the primary timing corresponding to the primary alignment signal ALA by a timing adjustment amount adjusted in advance. In one embodiment, the timing adjustment is the difference between the main time difference PD and the delay time DL.
Please refer to fig. 2B. FIG. 2B is a timing diagram of the transmission of the primary align signal ALA and the secondary align signal ALB between the primary video data transmission circuit 130A and the secondary video data transmission circuit 130B according to another embodiment of the present invention.
The labeling manner and relationship between signals and circuits in fig. 2B are the same as those in fig. 2A, and therefore are not repeated. In the present embodiment, as shown in fig. 2B, the time point (primary transmission time point PT) when the primary image data transmission circuit 130A generates the primary alignment signal ALA is later than the time point (secondary transmission time point ST) when the secondary image data transmission circuit 130B generates the secondary alignment signal ALB.
If the signal transmission paths have the same delay time DL, the primary time difference PD between the primary transmission time PT and the primary reception time PR is smaller than the secondary time difference SD between the secondary transmission time ST and the secondary reception time SR.
Therefore, when the primary time difference PD is smaller than the secondary time difference SD, it can be determined that the primary timing of the primary alignment signal ALA is later than the secondary timing of the secondary alignment signal ALB. Therefore, the secondary timing corresponding to the secondary alignment signal ALB can be aligned with the primary timing corresponding to the primary alignment signal ALA by a timing adjustment amount adjusted later. In one embodiment, the timing adjustment is the difference between the secondary time difference SD and the delay time DL.
Please refer to fig. 2C. FIG. 2C is a timing diagram of the transmission of the primary align signal ALA and the secondary align signal ALB between the primary video data transmission circuit 130A and the secondary video data transmission circuit 130B according to another embodiment of the present invention.
The labeling manner and relationship between signals and circuits in fig. 2C are the same as those in fig. 2A, and therefore are not described again. In the present embodiment, as shown in fig. 2C, the time point (primary transmission time point PT) when the primary image data transmission circuit 130A generates the primary alignment signal ALA is equal to the time point (secondary transmission time point ST) when the secondary image data transmission circuit 130B generates the secondary alignment signal ALB.
If the signal transmission paths will have the same delay time DL, in such a case, the primary time difference PD between the primary transmission time point PT and the primary reception time point PR will be equal to the secondary time difference SD between the secondary transmission time point ST and the secondary reception time point SR.
Therefore, when the condition that the primary time difference PD is equal to the secondary time difference SD occurs, it can be determined that the primary timing of the primary alignment signal ALA is equal to the secondary timing of the secondary alignment signal ALB. Therefore, the timing adjustment amount will be 0 without adjusting the secondary timing corresponding to the secondary alignment signal ALB.
In one embodiment, the comparison between the primary time difference PD and the secondary time difference SD and the calculation of the timing adjustment are performed by the primary video data transmission circuit 130A.
In more detail, the primary video data transmission circuit 130A is configured to receive the secondary time difference SD from the secondary video data transmission circuit 130B, calculate a timing adjustment amount according to the primary time difference PD and the secondary time difference SD, and control the secondary video data transmission circuit 130B to adjust the secondary timing according to the timing adjustment amount.
In another embodiment, the comparison between the primary time difference PD and the secondary time difference SD and the calculation of the timing adjustment are performed by the secondary video data transmission circuit 130B.
In more detail, the secondary video data transmission circuit 130B is configured to receive the primary time difference PD from the primary video data transmission circuit 130A, to calculate a timing adjustment amount according to the primary time difference PD and the secondary time difference SD, and to adjust the secondary timing according to the timing adjustment amount.
Then, the main image data transmission circuit 130A sets the main timing of the main alignment signal ALA as the main data transmission timing. The secondary video data transmission circuit 130B uses the secondary timing of the secondary alignment signal ALB as the secondary data transmission timing after the timing adjustment.
Therefore, the primary video data transmission circuit 130A and the secondary video data transmission circuit 130B perform synchronous video data transmission with the video data receiving device 120 according to the primary data transmission timing and the secondary data transmission timing, respectively, so that the video data receiving device 120 plays the video according to the two synchronous video data.
It should be noted that, in the above embodiments, a secondary image data transmission circuit is taken as an example for illustration. In other embodiments, the image data transmission device 110 may include a plurality of secondary image data transmission circuits, and each secondary image data transmission circuit may exchange alignment signals with the primary image data transmission circuit, and adjust the timing according to the relationship between the primary and secondary time differences after calculating the primary and secondary time differences according to the transmission time point and the reception time point. When the number of the primary image data transmission circuits and the secondary image data transmission circuits is N, the N image data transmission circuits and the primary image data transmission circuit can synchronously transmit the N image data. In addition, in the above embodiments, an example of the internal circuit of the image data receiving apparatus 120 is described. In other embodiments, the image data receiving device 120 may include a plurality of image data receiving circuits respectively coupled to a plurality of image data transmitting circuits of the image data transmitting device 110 through independent channels, so as to perform synchronous transmission of image data. In other words, the timing sequence can be aligned between the video data receiving circuits of the video data receiving apparatus 120 by a similar method to perform synchronous video data receiving.
Therefore, the image data transmission device of the invention can determine the time sequence difference between the primary and secondary image data transmission circuits through the signal transmission and the time difference calculation between the primary and secondary image data transmission circuits, and further adjust the time sequence of the secondary image data transmission circuit to align the time sequence of the primary image data transmission circuit, thereby achieving the purpose of synchronous data transmission.
Please refer to fig. 3. Fig. 3 is a flowchart of an image data transmission method 300 with a synchronous data transmission mechanism according to an embodiment of the present invention.
In addition to the aforementioned apparatuses, the present invention further discloses an image data transmission method 300 with a synchronous data transmission mechanism, which is applied to, for example, but not limited to, the image data transmission apparatus 110 included in the image playing system 100 of fig. 1. One embodiment of a method 300 for transmitting image data is shown in FIG. 3, comprising the steps of:
in step S310: the main image data transmission circuit 130A generates and transmits the main alignment signal ALA at the main transmission time PT and receives the sub alignment signal ALB at the main reception time PR.
In step S320: the main image data transmission circuit 130A calculates a main time difference PD between the main transmission time point PT and the main reception time point PR.
In step S330: the main image data transmission circuit 130A makes the main timing of the main alignment signal ALA be the main data transmission timing.
In step S340: the secondary video data transmission circuit 130B generates and transmits the secondary alignment signal ALB at the secondary transmission time ST, and receives the primary alignment signal ALA at the secondary reception time SR.
In step S350: the secondary video data transmission circuit 130B calculates a secondary time difference SD between the secondary transmission time ST and the secondary reception time SR.
In step S360: the secondary video data transmission circuit 130B makes the secondary timing of the secondary alignment signal ALB as the secondary data transmission timing after being adjusted by the timing adjustment amount, wherein the timing adjustment amount is configured to adjust the primary time difference PD and the secondary time difference SD to be equal.
In step S370: the primary video data transmission circuit 130A and the secondary video data transmission circuit 130B perform synchronous video data transmission with the video data receiving device 120 according to the primary data transmission timing and the secondary data transmission timing, respectively, so that the video data receiving device 120 plays the video accordingly.
It should be noted that the above embodiments are only examples. In other embodiments, modifications can be made by one of ordinary skill in the art without departing from the spirit of the invention.
In summary, the image playing system and the image data transmission device and method with the synchronous data transmission mechanism of the present invention can determine the timing difference between the primary and secondary image data transmission circuits through the signal transmission and the time difference between the two circuits, and further adjust the timing of the secondary image data transmission circuit to align the timing of the primary image data transmission circuit, thereby achieving the purpose of synchronous data transmission.
Although the embodiments of the present invention have been described above, these embodiments are not intended to limit the present invention, and those skilled in the art can make changes and modifications to the technical features of the present invention according to the contents explicitly or implicitly included in the present invention, but all changes and modifications can be made within the scope of the present invention.
Claims (10)
1. An image data transmission device with a synchronous data transmission mechanism, the image data transmission device comprising:
a primary image data transmission circuit configured to:
generating and transmitting a primary alignment signal at a primary transmission time point and receiving a secondary alignment signal at a primary reception time point;
calculating a primary time difference between the primary transmission time point and the primary reception time point; and
causing a primary timing of the primary alignment signal to be a primary data transfer timing;
a secondary image data transmission circuit, coupled to the primary image data transmission circuit, configured to:
generating and transmitting the secondary alignment signal at a secondary transmission time point and receiving the primary alignment signal at a secondary reception time point;
calculating a secondary time difference between the secondary transmission time point and the secondary reception time point; and
adjusting a secondary timing of the secondary alignment signal by a timing adjustment amount to serve as a secondary data transmission timing, wherein the timing adjustment amount is configured to adjust the primary time difference and the secondary time difference to be equal;
the primary image data transmission circuit and the secondary image data transmission circuit perform synchronous image data transmission with an image data receiving device according to the primary data transmission timing sequence and the secondary data transmission timing sequence, so that the image data receiving device plays images accordingly.
2. The apparatus of claim 1, wherein the timing adjustment is performed by forward adjusting the secondary timing as the secondary data transmission timing when the primary time difference is greater than the secondary time difference;
when the primary time difference is smaller than the secondary time difference, the timing adjustment amount is to adjust the secondary timing backward as the secondary data transmission timing; and
when the primary time difference is equal to the secondary time difference, the timing adjustment does not adjust the secondary timing to directly make the secondary timing as the secondary data transmission timing.
3. The image data transmission device according to claim 1, wherein the image data transmission device comprises a plurality of the secondary image data transmission circuits.
4. The image data transmission device of claim 1, wherein the primary image data transmission circuit is further configured to receive the secondary time difference from the secondary image data transmission circuit, to calculate the timing adjustment according to the primary time difference and the secondary time difference, and to control the secondary image data transmission circuit to adjust the secondary timing according to the timing adjustment.
5. The image data transmission device of claim 1, wherein the secondary image data transmission circuit is further configured to receive the primary time difference from the primary image data transmission circuit, to calculate the timing adjustment according to the primary time difference and the secondary time difference, and to adjust the secondary timing according to the timing adjustment.
6. An image playing system, comprising:
an image data receiving device; and
the image data transmission device, coupled to the image data receiving device, includes:
a primary image data transmission circuit configured to:
generating and transmitting a primary alignment signal at a primary transmission time point and receiving a secondary alignment signal at a primary reception time point;
calculating a primary time difference between the primary transmission time point and the primary reception time point; and
causing a primary timing of the primary alignment signal to be a primary data transfer timing;
a secondary image data transmission circuit, coupled to the primary image data transmission circuit, configured to:
generating and transmitting the secondary alignment signal at a secondary transmission time point and receiving the primary alignment signal at a secondary reception time point;
calculating a secondary time difference between the secondary transmission time point and the secondary reception time point; and
adjusting a secondary timing of the secondary alignment signal by a timing adjustment amount to serve as a secondary data transmission timing, wherein the timing adjustment amount is configured to adjust the primary time difference and the secondary time difference to be equal;
the primary image data transmission circuit and the secondary image data transmission circuit perform synchronous image data transmission with the image data receiving device according to the primary data transmission timing sequence and the secondary data transmission timing sequence, respectively, so that the image data receiving device plays images accordingly.
7. An image data transmission method with a synchronous data transmission mechanism is applied to an image data transmission device, and is characterized in that the image data transmission method comprises the following steps:
enabling the primary image data transmission circuit to generate and transmit a primary alignment signal at a primary transmission time point and receive a secondary alignment signal at a primary reception time point;
causing the primary video data transmission circuit to calculate a primary time difference between the primary transmission time point and the primary reception time point;
making the main image data transmission circuit to make the main timing of the main alignment signal as a main data transmission timing;
enabling a secondary image data transmission circuit to generate and transmit the secondary alignment signal at a secondary transmission time point and receive the primary alignment signal at a secondary reception time point;
causing the secondary video data transmission circuit to calculate a secondary time difference between the secondary transmission time point and the secondary reception time point;
causing the secondary video data transmission circuit to adjust a secondary timing of the secondary alignment signal by a timing adjustment amount configured to adjust the primary time difference and the secondary time difference to be equal, as a secondary data transmission timing; and
and enabling the primary image data transmission circuit and the secondary image data transmission circuit to perform synchronous image data transmission with an image data receiving device according to the primary data transmission timing sequence and the secondary data transmission timing sequence respectively, so that the image data receiving device plays images accordingly.
8. The method according to claim 7, wherein the timing adjustment is forward adjusting the secondary timing as the secondary data transmission timing when the primary time difference is greater than the secondary time difference;
when the primary time difference is smaller than the secondary time difference, the timing adjustment amount is to adjust the secondary timing backward as the secondary data transmission timing; and
when the primary time difference is equal to the secondary time difference, the timing adjustment does not adjust the secondary timing to directly make the secondary timing as the secondary data transmission timing.
9. The method for transmitting image data according to claim 7, wherein the method for transmitting image data further comprises:
causing the primary video data transmission circuit to receive the secondary time difference from the secondary video data transmission circuit; and
and enabling the primary image data transmission circuit to calculate the timing adjustment amount according to the primary time difference and the secondary time difference, and controlling the secondary image data transmission circuit to adjust the secondary timing according to the timing adjustment amount.
10. The method for transmitting image data according to claim 7, wherein the method for transmitting image data further comprises:
causing the secondary video data transmission circuit to receive the primary time difference from the primary video data transmission circuit; and
and enabling the secondary image data transmission circuit to calculate the timing adjustment amount according to the primary time difference and the secondary time difference so as to adjust the secondary timing according to the timing adjustment amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010461164.XA CN113747201B (en) | 2020-05-27 | 2020-05-27 | Image playing system and image data transmission device and method with synchronous data transmission mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010461164.XA CN113747201B (en) | 2020-05-27 | 2020-05-27 | Image playing system and image data transmission device and method with synchronous data transmission mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113747201A true CN113747201A (en) | 2021-12-03 |
| CN113747201B CN113747201B (en) | 2024-01-12 |
Family
ID=78723862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010461164.XA Active CN113747201B (en) | 2020-05-27 | 2020-05-27 | Image playing system and image data transmission device and method with synchronous data transmission mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113747201B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6658579B1 (en) * | 2000-05-20 | 2003-12-02 | Equipe Communications Corporation | Network device with local timing systems for automatic selection between redundant, synchronous central timing systems |
| CN101115129A (en) * | 2006-07-28 | 2008-01-30 | 奇美电子股份有限公司 | Plane display having multi-channel data transmission interface and image transmission method |
| US20100097358A1 (en) * | 2008-10-16 | 2010-04-22 | Sony Corporation | Drive circuit for display panel, display panel module, display device, and method for driving display panel |
| US20100302214A1 (en) * | 2009-06-02 | 2010-12-02 | Samsung Electronics Co., Ltd. | Method of synchronizing a driving device and display apparatus for performing the method |
| CN102789778A (en) * | 2011-05-18 | 2012-11-21 | 瑞昱半导体股份有限公司 | Image processing device and image processing method |
| US20140118514A1 (en) * | 2012-10-26 | 2014-05-01 | Raytheon Company | Method and apparatus for image stacking |
| CN105245759A (en) * | 2015-11-23 | 2016-01-13 | 广东威创视讯科技股份有限公司 | Method and device for realizing image synchronous display |
| CN105549933A (en) * | 2015-12-16 | 2016-05-04 | 广东威创视讯科技股份有限公司 | Video card signal synchronizing method and system |
| US9510044B1 (en) * | 2008-06-18 | 2016-11-29 | Gracenote, Inc. | TV content segmentation, categorization and identification and time-aligned applications |
| US20170263204A1 (en) * | 2014-09-17 | 2017-09-14 | Sharp Kabushiki Kaisha | Display device and method for driving same |
-
2020
- 2020-05-27 CN CN202010461164.XA patent/CN113747201B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6658579B1 (en) * | 2000-05-20 | 2003-12-02 | Equipe Communications Corporation | Network device with local timing systems for automatic selection between redundant, synchronous central timing systems |
| CN101115129A (en) * | 2006-07-28 | 2008-01-30 | 奇美电子股份有限公司 | Plane display having multi-channel data transmission interface and image transmission method |
| US9510044B1 (en) * | 2008-06-18 | 2016-11-29 | Gracenote, Inc. | TV content segmentation, categorization and identification and time-aligned applications |
| US20100097358A1 (en) * | 2008-10-16 | 2010-04-22 | Sony Corporation | Drive circuit for display panel, display panel module, display device, and method for driving display panel |
| US20100302214A1 (en) * | 2009-06-02 | 2010-12-02 | Samsung Electronics Co., Ltd. | Method of synchronizing a driving device and display apparatus for performing the method |
| CN102789778A (en) * | 2011-05-18 | 2012-11-21 | 瑞昱半导体股份有限公司 | Image processing device and image processing method |
| US20140118514A1 (en) * | 2012-10-26 | 2014-05-01 | Raytheon Company | Method and apparatus for image stacking |
| US20170263204A1 (en) * | 2014-09-17 | 2017-09-14 | Sharp Kabushiki Kaisha | Display device and method for driving same |
| CN105245759A (en) * | 2015-11-23 | 2016-01-13 | 广东威创视讯科技股份有限公司 | Method and device for realizing image synchronous display |
| CN105549933A (en) * | 2015-12-16 | 2016-05-04 | 广东威创视讯科技股份有限公司 | Video card signal synchronizing method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113747201B (en) | 2024-01-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10091399B2 (en) | Multiple camera synchronization system | |
| CN108366283B (en) | Media synchronous playing method among multiple devices | |
| TWI690878B (en) | Synchronous playback system and synchronous playback method | |
| TW202119814A (en) | Video transmission method with adaptive adjustment bandwidth and system thereof | |
| US11743421B2 (en) | Device for secure video streaming | |
| TW201715379A (en) | Data transfer device of display equipment and data transfer method | |
| TWI739437B (en) | Image display system and image data transmission apparatus and method thereof having synchronous data transmission mechanism | |
| US20220094994A1 (en) | Transmission control system of multi-media signal, transmitter control circuit and receiver control circuit | |
| CN113747201B (en) | Image playing system and image data transmission device and method with synchronous data transmission mechanism | |
| US8229272B2 (en) | Video apparatus capable of changing video output mode of external video apparatus according to video input mode of the video apparatus and control method thereof | |
| US8238445B2 (en) | Video and audio synchronization method and related apparatus for a multimedia interface | |
| CN110213626B (en) | Video processing method and terminal equipment | |
| CN111385590A (en) | Live broadcast data processing method and device and terminal | |
| US11087657B2 (en) | Display panel driving apparatus | |
| CN111309274B (en) | Synchronization system of spliced screen | |
| US20070127045A1 (en) | Arrangement for data transmission between an image source and an image reproducing system | |
| TWI733373B (en) | Image display system and image data transmission apparatus and method thereof having synchronous data transmission mechanism | |
| US10460646B2 (en) | Display system, display device, electronic apparatus, and image signal transmission method for displaying an original image based on combining divided image signals | |
| JP7330928B2 (en) | Digital video signal generation circuit and system | |
| US10504409B2 (en) | Display synchronization | |
| CN214014367U (en) | HDMI signal output device and electronic equipment | |
| TWI660628B (en) | Method for playback synchronization of media among devices | |
| CN101202868B (en) | Image and sound data synchronization method for multimedia interface and related device | |
| JP2016046734A (en) | Video signal processing circuit, display device, and video signal processing method | |
| TW201546794A (en) | Data driver of display device and output data synchronization method of the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |