CN112383732A - Signal transmission system and method with adaptive resolution - Google Patents
Signal transmission system and method with adaptive resolution Download PDFInfo
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- CN112383732A CN112383732A CN202011451282.9A CN202011451282A CN112383732A CN 112383732 A CN112383732 A CN 112383732A CN 202011451282 A CN202011451282 A CN 202011451282A CN 112383732 A CN112383732 A CN 112383732A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
- H04N7/0117—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving conversion of the spatial resolution of the incoming video signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
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Abstract
The invention discloses a resolution self-adaptive signal transmission system and a method, wherein the signal transmission system comprises a control module and a transmission module, and the control module comprises a data acquisition unit and a switching unit; the data acquisition unit is used for acquiring resolution data of the external display equipment; the switching unit is used for selecting and communicating the corresponding signal transmission channel according to the resolution data; the transmission module is used for transmitting a display signal to the display equipment for displaying through the communicated signal output channel. The signal transmission system can automatically switch and communicate different transmission channels according to the resolution ratio of external equipment so as to realize transmission of signals with the resolution ratio, and the scheme can adapt to different external equipment so as to ensure the universality of signal transmission. Preferably, two sets of transmission channels are arranged, when the external equipment is low in resolution, one transmission channel is used for data transmission, and when the external equipment is high in resolution, two transmission channels are used for data transmission.
Description
Technical Field
The invention belongs to the field of signal processing, and particularly relates to a resolution self-adaptive signal transmission system and method.
Background
The MIPI is a display output interface on the android mobile device, most of common displays in the current family or common interfaces of televisions are HDMI interface types, and when MIPI data on the android device need to be displayed on the displays of the HDMI interfaces, a MIPI-to-HDMI device needs to be used.
The existing MIPI-to-HDMI method can only realize the output of single resolution when a group of MIPI signals are converted into HDMI signals by utilizing a video signal conversion chip, namely, if the resolution of an external display is 1080P, the external display can only transmit data with the resolution of 1080P to the external display equipment with the resolution of 1080P, and when the method is applied to the external display equipment with the resolution higher than 1080P, such as 4K resolution, the signal transmission device cannot be adapted.
Disclosure of Invention
The invention provides a resolution self-adaptive signal transmission system and method, aiming at overcoming the defect that a signal transmission device in the prior art cannot be adapted according to the resolution of an external display device.
The invention solves the technical problems through the following technical scheme:
a signal transmission system with self-adaptive resolution comprises a control module and a transmission module, wherein the control module comprises a data acquisition unit and a switching unit;
the data acquisition unit is used for acquiring resolution data of an external display device;
the switching unit is used for selecting and communicating a corresponding signal transmission channel according to the resolution data;
the transmission module is used for transmitting a display signal to the display equipment for displaying through the communicated signal output channel.
Preferably, the signal transmission channel includes a main transmission channel and an auxiliary transmission channel, and the control module further includes a data detection unit;
the data detection unit is used for detecting whether the resolution data is larger than a preset threshold value, if so, the switching unit is called to communicate the main transmission channel and the auxiliary transmission channel, and if not, the switching unit is called to communicate the main transmission channel.
Preferably, the signal transmission system further comprises a signal conversion chip, and the signal conversion chip comprises a DET pin;
the signal conversion chip is used for detecting whether the display equipment is accessed, and if so, the DET pin is switched from a preset low level to a high level;
the signal conversion chip is also used for acquiring and storing resolution data of the display device after the DET pin is switched to a high level;
the data acquisition unit is used for acquiring the resolution data stored by the signal conversion chip.
Preferably, the signal conversion chip further comprises an INT pin, and the control module further comprises a signal detection unit;
the signal conversion chip is used for switching the INT pin from a preset low level to a high level after the resolution data is stored;
and the signal detection unit is used for calling the data acquisition unit to acquire the resolution data stored by the signal conversion chip after detecting that the INT pin is switched to a high level.
Preferably, the signal conversion chip further comprises a first I2C interface and a second I2C interface;
the first I2C interface is connected with the display device, and the second I2C interface is connected with the control module;
the signal conversion chip is used for acquiring resolution data of the display device through the first I2C interface;
the data acquisition unit is used for acquiring the resolution data stored by the signal conversion chip through the second I2C interface;
and/or, the signal transmission system also comprises an HDMI interface;
the HDMI is respectively connected with the display equipment and the signal conversion chip;
the transmission module is used for transmitting the display signal to the signal conversion chip;
the signal conversion chip is further used for converting the display signal into an HDMI format and transmitting the converted display signal to the display device through the HDMI interface.
A resolution-adaptive signal transmission method, the signal transmission method comprising:
acquiring resolution data of an external display device;
selecting and communicating a corresponding signal transmission channel according to the resolution data;
and transmitting a display signal to the display equipment for displaying through the communicated signal output channel.
Preferably, the signal transmission channel includes a main transmission channel and an auxiliary transmission channel, and the step of selecting and communicating the corresponding signal transmission channel according to the resolution data specifically includes:
and detecting whether the resolution data is greater than a preset threshold value, if so, communicating the main transmission channel and the auxiliary transmission channel, and if not, communicating the main transmission channel.
Preferably, the signal transmission method is implemented by using a signal conversion chip, the signal conversion chip includes a DET pin, and the step of acquiring resolution data of an external display device specifically includes:
detecting whether the display equipment is accessed, if so, switching the DET pin from a preset low level to a high level;
the signal conversion chip acquires and stores resolution data of the display equipment;
and acquiring the resolution data stored by the signal conversion chip.
Preferably, the signal conversion chip further includes an INT pin, and after the step of acquiring and storing the resolution data by the signal conversion chip, the signal transmission method further includes:
switching the INT pin from a preset low level to a high level;
the step of acquiring the resolution data stored in the signal conversion chip specifically includes:
and acquiring the resolution data stored by the signal conversion chip after the INT pin is detected to be switched to a high level.
Preferably, the signal conversion chip further comprises a first I2C interface and a second I2C interface;
the step of acquiring and storing the resolution data of the display device by the signal conversion chip specifically comprises:
the signal conversion chip acquires and stores resolution data of the display device through the first I2C interface;
the step of acquiring the resolution data stored in the signal conversion chip specifically includes:
acquiring and storing the resolution data stored by the signal conversion chip through the second I2C interface;
and/or the step of transmitting a display signal to the display device for display through the communicated signal output channel specifically comprises:
transmitting the display signal to the signal conversion chip;
the signal conversion chip converts the display signal into an HDMI format;
and transmitting the converted display signal to the display device.
The positive progress effects of the invention are as follows: the signal transmission system can automatically switch and communicate different transmission channels according to the resolution ratio of external equipment so as to realize transmission of signals with the resolution ratio, and the scheme can adapt to different external equipment so as to ensure the universality of signal transmission. Preferably, two sets of transmission channels are arranged, when the external equipment is low in resolution, one transmission channel is used for data transmission, and when the external equipment is high in resolution, two transmission channels are used for data transmission.
Drawings
Fig. 1 is a block diagram of a resolution adaptive signal transmission system according to embodiment 1 of the present invention.
Fig. 2 is a block diagram of a resolution adaptive signal transmission system according to embodiment 2 of the present invention.
Fig. 3 is a flowchart of a resolution adaptive signal transmission method according to embodiment 3 of the present invention.
Fig. 4 is a flowchart of step 20 of the resolution adaptive signal transmission method according to embodiment 3 of the present invention.
Fig. 5 is a flowchart of step 10 of the resolution adaptive signal transmission method according to embodiment 4 of the present invention.
Fig. 6 is a flowchart of another implementation manner of step 10 in the resolution adaptive signal transmission method according to embodiment 4 of the present invention.
Fig. 7 is a flowchart of step 30 of the resolution adaptive signal transmission method according to embodiment 4 of the present invention.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
Example 1
A resolution adaptive signal transmission system, as shown in fig. 1, the signal transmission system includes a control module 1 and a transmission module 2, the control module 1 includes a data acquisition unit 11 and a switching unit 12;
the data acquisition unit 11 is configured to acquire resolution data of the external display device 3;
the switching unit 12 is configured to select and communicate a corresponding signal transmission channel according to the resolution data;
the transmission module 2 is used for transmitting a display signal to the display device 3 for displaying through the communicated signal output channel.
It should be noted that, the resolution of the display signal in this embodiment is the same as the resolution of the external display device, and after the resolution of the external display device is detected and obtained, the device providing the signal may perform adaptive adjustment on the resolution of the signal.
The signal transmission channel comprises a main transmission channel 21 and an auxiliary transmission channel 22, and the control module 1 further comprises a data detection unit 13;
the data detection unit 13 is configured to detect whether the resolution data is greater than a preset threshold, if so, invoke the switching unit 12 to communicate the main transmission channel 21 and the auxiliary transmission channel 22, and if not, invoke the switching unit 12 to communicate the main transmission channel 21.
In this embodiment, can switch the transmission of the signal in order to realize the same resolution ratio of different transmission channels of intercommunication according to the resolution ratio automatic switching of external equipment, this scheme can the different external device of adaptation to ensure signal transmission's commonality. Preferably, two sets of transmission channels are arranged, when the external equipment is low in resolution, one transmission channel is used for data transmission, and when the external equipment is high in resolution, two transmission channels are used for data transmission.
Example 2
The present embodiment is a further improvement on the basis of embodiment 1, and as shown in fig. 2, the signal transmission system further includes a signal conversion chip 4, where the signal conversion chip 4 includes a DET pin;
the signal conversion chip 4 is used for detecting whether the display device 3 is connected, and if so, the DET pin is switched from a preset low level to a high level;
the signal conversion chip 4 is further configured to obtain and store resolution data of the display device 3 after the DET pin is switched to a high level;
the data obtaining unit 11 is configured to obtain the resolution data stored in the signal conversion chip 4.
In this embodiment, the signal conversion chip 4 further includes an INT pin, and the control module 1 further includes a signal detection unit 14;
the signal conversion chip 4 is used for switching the INT pin from a preset low level to a high level after the resolution data is stored;
the signal detection unit 14 is configured to call the data acquisition unit 11 to acquire the resolution data stored in the signal conversion chip 4 after detecting that the INT pin is switched to a high level.
The signal conversion chip 4 further comprises a first I2C interface and a second I2C interface;
the first I2C interface is connected with the display device 3, and the second I2C interface is connected with the control module 1;
the signal conversion chip 4 is used for acquiring resolution data of the display device 3 through the first I2C interface;
the data acquiring unit 11 is configured to acquire the resolution data stored in the signal conversion chip 4 through the second I2C interface;
in this embodiment, the signal transmission system further includes an HDMI interface 5;
the HDMI 5 is respectively connected with the display device 3 and the signal conversion chip 4;
the transmission module 2 is used for transmitting the display signal to the signal conversion chip 4;
the signal conversion chip 4 is further configured to convert the display signal into an HDMI format, and transmit the converted display signal to the display device 3 through the HDMI interface 5.
In this embodiment, when an external display is inserted into the HDMI interface, the DET pin changes to a high level, the signal conversion chip reads resolution data of the externally-accessed display through the first I2C interface after detecting that the DET pin changes to the high level, then the INT pin is set to the high level, the control module reads resolution information stored inside the signal conversion chip through the second I2C interface after detecting that the INT pin is the high level, if the resolution of the external display is greater than the set threshold value and has a high resolution, for example, 4K, the switching unit of the control module communicates with the main and auxiliary signal transmission channels through the CTRL pin, and then the control module pulls down the RST pin to reset the signal conversion chip, so that the signal conversion chip can output a 4K resolution signal to adapt to the external 4K display; if the resolution of the external display is low resolution such as 1080P, the switching unit of the control module communicates with the main transmission channel through CTRL, the auxiliary transmission channel is closed, then the control module pulls down the RST pin to reset the signal conversion chip, and the signal conversion chip can output a 1080P resolution signal to adapt to the external 1080P display.
Example 3
A resolution adaptive signal transmission method, as shown in fig. 3, the signal transmission method comprising:
and step 30, transmitting a display signal to the display equipment for displaying through the communicated signal output channel.
It should be noted that, the resolution of the display signal in this embodiment is the same as the resolution of the external display device, and after the resolution of the external display device is detected and obtained, the device providing the signal may perform adaptive adjustment on the resolution of the signal.
Specifically, the signal transmission channel includes a main transmission channel and an auxiliary transmission channel, referring to fig. 4, step 20 specifically includes:
and step 203, communicating the main transmission channel.
In this embodiment, can switch the transmission of the signal in order to realize the same resolution ratio of different transmission channels of intercommunication according to the resolution ratio automatic switching of external equipment, this scheme can the different external device of adaptation to ensure signal transmission's commonality. Preferably, two sets of transmission channels are arranged, when the external equipment is low in resolution, one transmission channel is used for data transmission, and when the external equipment is high in resolution, two transmission channels are used for data transmission.
Example 4
This embodiment is a further improvement on the basis of embodiment 3, in which the signal transmission method is implemented by using a signal conversion chip, the signal conversion chip includes a DET pin, as shown in fig. 5, and step 10 specifically includes:
103, acquiring and storing resolution data of the display equipment by the signal conversion chip;
and step 104, acquiring resolution data stored by the signal conversion chip.
In this embodiment, the signal conversion chip further includes an INT pin, fig. 6 shows another specific implementation manner of step 10, and after step 103, the signal transmission method further includes:
105, switching the INT pin from a preset low level to a high level;
step 104 further includes:
and step 1041, acquiring resolution data stored by the signal conversion chip after detecting that the INT pin is switched to the high level.
In this embodiment, the signal conversion chip further includes a first I2C interface and a second I2C interface, and further step 103 specifically includes: the signal conversion chip acquires and stores resolution data of the display device through the first I2C interface;
step 104 specifically includes: acquiring and storing resolution data stored by the signal conversion chip through a second I2C interface;
in this embodiment, referring to fig. 7, step 30 specifically includes:
In this embodiment, when an external display is inserted into the HDMI interface, the DET pin changes to a high level, the signal conversion chip reads resolution data of the externally-accessed display through the first I2C interface after detecting that the DET pin changes to the high level, then sets the INT pin to the high level, the control module reads resolution information stored inside the signal conversion chip through the second I2C interface after detecting that the INT pin is the high level, and if the resolution of the external display is greater than a set threshold and is a high resolution, for example, 4K, the switching unit of the control module communicates with the main and auxiliary two signal transmission channels, that is, a 4K resolution signal can be output to adapt to the external 4K display; if the resolution of the external display is low resolution such as 1080P, the switching unit of the control module connects the main transmission channel and closes the auxiliary transmission channel, i.e. 1080P resolution signal can be output to adapt to the external 1080P display.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (10)
1. The signal transmission system with self-adaptive resolution is characterized by comprising a control module and a transmission module, wherein the control module comprises a data acquisition unit and a switching unit;
the data acquisition unit is used for acquiring resolution data of an external display device;
the switching unit is used for selecting and communicating a corresponding signal transmission channel according to the resolution data;
the transmission module is used for transmitting a display signal to the display equipment for displaying through the communicated signal output channel.
2. The resolution-adaptive signal transmission system according to claim 1, wherein the signal transmission channel includes a main transmission channel and an auxiliary transmission channel, the control module further includes a data detection unit;
the data detection unit is used for detecting whether the resolution data is larger than a preset threshold value, if so, the switching unit is called to communicate the main transmission channel and the auxiliary transmission channel, and if not, the switching unit is called to communicate the main transmission channel.
3. The resolution-adaptive signal transmission system according to claim 1, wherein the signal transmission system further comprises a signal conversion chip, the signal conversion chip comprising a DET pin;
the signal conversion chip is used for detecting whether the display equipment is accessed, and if so, the DET pin is switched from a preset low level to a high level;
the signal conversion chip is also used for acquiring and storing resolution data of the display device after the DET pin is switched to a high level;
the data acquisition unit is used for acquiring the resolution data stored by the signal conversion chip.
4. The adaptive-resolution signal transmission system according to claim 3, wherein the signal conversion chip further comprises an INT pin, and the control module further comprises a signal detection unit;
the signal conversion chip is used for switching the INT pin from a preset low level to a high level after the resolution data is stored;
and the signal detection unit is used for calling the data acquisition unit to acquire the resolution data stored by the signal conversion chip after detecting that the INT pin is switched to a high level.
5. The resolution-adaptive signal transmission system according to claim 3, wherein the signal conversion chip further comprises a first I2C interface and a second I2C interface;
the first I2C interface is connected with the display device, and the second I2C interface is connected with the control module;
the signal conversion chip is used for acquiring resolution data of the display device through the first I2C interface;
the data acquisition unit is used for acquiring the resolution data stored by the signal conversion chip through the second I2C interface;
and/or, the signal transmission system also comprises an HDMI interface;
the HDMI is respectively connected with the display equipment and the signal conversion chip;
the transmission module is used for transmitting the display signal to the signal conversion chip;
the signal conversion chip is further used for converting the display signal into an HDMI format and transmitting the converted display signal to the display device through the HDMI interface.
6. A resolution-adaptive signal transmission method, comprising:
acquiring resolution data of an external display device;
selecting and communicating a corresponding signal transmission channel according to the resolution data;
and transmitting a display signal to the display equipment for displaying through the communicated signal output channel.
7. The resolution-adaptive signal transmission method according to claim 6, wherein the signal transmission channels include a main transmission channel and an auxiliary transmission channel, and the step of selecting and communicating the corresponding signal transmission channels according to the resolution data specifically includes:
and detecting whether the resolution data is greater than a preset threshold value, if so, communicating the main transmission channel and the auxiliary transmission channel, and if not, communicating the main transmission channel.
8. The signal transmission method of claim 6, wherein the signal transmission method is implemented by using a signal conversion chip, the signal conversion chip includes a DET pin, and the step of acquiring the resolution data of the external display device specifically includes:
detecting whether the display equipment is accessed, if so, switching the DET pin from a preset low level to a high level;
the signal conversion chip acquires and stores resolution data of the display equipment;
and acquiring the resolution data stored by the signal conversion chip.
9. The resolution-adaptive signal transmission method according to claim 8, wherein the signal conversion chip further includes an INT pin, and after the step of acquiring and storing the resolution data, the signal transmission method further includes:
switching the INT pin from a preset low level to a high level;
the step of acquiring the resolution data stored in the signal conversion chip specifically includes:
and acquiring the resolution data stored by the signal conversion chip after the INT pin is detected to be switched to a high level.
10. The resolution-adaptive signal transmission method according to claim 8, wherein the signal conversion chip further includes a first I2C interface and a second I2C interface;
the step of acquiring and storing the resolution data of the display device by the signal conversion chip specifically comprises:
the signal conversion chip acquires and stores resolution data of the display device through the first I2C interface;
the step of acquiring the resolution data stored in the signal conversion chip specifically includes:
acquiring and storing the resolution data stored by the signal conversion chip through the second I2C interface;
and/or the step of transmitting a display signal to the display device for display through the communicated signal output channel specifically comprises:
transmitting the display signal to the signal conversion chip;
the signal conversion chip converts the display signal into an HDMI format;
and transmitting the converted display signal to the display device.
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| CN113132539B (en) * | 2021-04-13 | 2023-07-14 | 咪咕音乐有限公司 | Multimedia acquisition method, multimedia playing method, electronic device and storage medium |
| CN116828263A (en) * | 2023-08-30 | 2023-09-29 | 华光影像科技有限公司 | 8K4K film and television making interface switching system |
| CN117676060A (en) * | 2024-02-01 | 2024-03-08 | 深圳市灰度科技有限公司 | Video signal transmission circuit and system |
| CN117676060B (en) * | 2024-02-01 | 2024-06-11 | 深圳市灰度科技有限公司 | Video signal transmission circuit and system |
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| CN112383732B (en) | 2023-08-04 |
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