CN210431621U - 3 line XGA video signal conversion equipment - Google Patents
3 line XGA video signal conversion equipment Download PDFInfo
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- CN210431621U CN210431621U CN201921432484.1U CN201921432484U CN210431621U CN 210431621 U CN210431621 U CN 210431621U CN 201921432484 U CN201921432484 U CN 201921432484U CN 210431621 U CN210431621 U CN 210431621U
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Abstract
The utility model relates to a video signal conversion technology field specifically discloses a 3 line XGA video signal conversion equipment, wherein, include: the input connector comprises a first connecting end and a second connecting end, the first connecting end is used for outputting a first XGA video signal, the first XGA video signal is an XGA video signal containing a line field signal in an RGB signal, the second connecting end is used for outputting a second XGA video signal, and the second XGA video signal is an XGA video signal with a single line field signal; the input end of the first conversion chip is connected with the first connecting end, the input end of the second conversion chip is connected with the second connecting end, the first output end of the first conversion chip is connected with the socket, the second output end of the first conversion chip and the output end of the second conversion chip are both connected to the input end of the change-over switch, and the output end of the change-over switch is connected to the socket.
Description
Technical Field
The utility model relates to a video signal conversion technology field especially relates to a 3 line XGA video signal conversion equipment.
Background
The 3-wire XGA video signal conversion technology can convert two different types of XGA into a standard single-ended VGA video signal.
For the XGA video signal containing the line field signal in the RGB signal, the line field signal is separated from the RGB signal by using a conversion chip and is converted into a single-end signal, and the line field signal needs to be output after passing through a driving chip. For the XGA video signal with a single line field signal, the line field signal is converted into a single-ended signal by using a chip and then output.
In the prior art, conversion circuits are required to be separately arranged for conversion of RGB including line field signals and conversion of RGB including line field signals, which is troublesome in use, and therefore, a universal circuit conversion structure which can be applied to both cases is urgently needed.
Disclosure of Invention
The utility model provides a 3 line XGA video signal conversion equipment solves the problem that all need set up converting circuit respectively alone to having the conversion that RGB includes line field signal and has independent line field signal that exists among the correlation technique.
As an aspect of the utility model provides a 3 line XGA video signal conversion device, wherein, 3 line XGA video signal conversion device includes: the input connector comprises a first connecting end and a second connecting end, the first connecting end is used for outputting a first XGA video signal, the first XGA video signal is an XGA video signal containing a line and field signal in an RGB signal, the second connecting end is used for outputting a second XGA video signal, and the second XGA video signal is an XGA video signal with a single line and field signal;
the input end of the first conversion chip is connected with the first connecting end, the input end of the second conversion chip is connected with the second connecting end, the first output end of the first conversion chip is connected with the socket, the second output end of the first conversion chip and the output end of the second conversion chip are both connected to the input end of the change-over switch, and the output end of the change-over switch is connected to the socket;
the first output end of the first conversion chip can output RGB signals, and the second output end of the first conversion chip and the output end of the second conversion chip can both output single-ended horizontal synchronizing signals and single-ended field synchronizing signals.
Furthermore, the 3-wire XGA video signal conversion device further comprises a driving chip, wherein the input end of the driving chip is connected with the second output end of the first conversion chip, and the output end of the driving chip is connected with the input end of the change-over switch.
Further, the driving chip comprises a driving chip with model number SN74LVC8T 245.
Further, the first conversion chip comprises a chip with the model number AD8145 YCPZ-RL.
Further, the second conversion chip comprises a chip with model number DS26LS32 MJ/883.
Further, the 3-wire XGA video signal conversion apparatus further includes three diodes, each of which is disposed between the first output terminal of the first conversion chip and the socket, and R, G, B signals output from the first output terminal of the first conversion chip are input to the socket after passing through the three diodes, respectively.
Further, the socket comprises a standard VGA socket.
Through above-mentioned 3 line XGA video signal conversion equipment, be provided with two conversion chips, these two conversion chips can realize the conversion that contains the XGA video signal of line field signal and the XGA video signal that has independent line field signal in the RGB signal respectively, the realization separates line field signal and RGB signal to the XGA video signal that contains the line field signal in the RGB signal, and convert single-ended signal, the realization becomes single-ended signal output with line field signal conversion to the XGA video signal that has independent line field signal, this kind of 3 line XGA video signal conversion equipment simple structure can realize having RGB and including line field signal and have the conversion of independent line field signal general, need not set up two kinds of circuit conversion structures respectively, have convenient to use and the advantage that the commonality is strong.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic circuit structure diagram of a 3-wire XGA video signal conversion device provided by the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances for purposes of describing the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this embodiment, a 3-line XGA video signal conversion device is provided, fig. 1 is a schematic structural diagram of the 3-line XGA video signal conversion device according to the embodiment of the present invention, as shown in fig. 1, including:
an input connector 110, a first conversion chip 120, a second conversion chip 130, a changeover switch 140, and a socket 150, the input connector 110 including a first connection terminal for outputting a first XGA video signal which is an XGA video signal containing a line and field signal within an RGB signal, and a second connection terminal for outputting a second XGA video signal which is an XGA video signal having a single line and field signal;
the input end of the first conversion chip 120 is connected to the first connection end, the input end of the second conversion chip 130 is connected to the second connection end, the first output end of the first conversion chip 120 is connected to the socket, the second output end of the first conversion chip 120 and the output end of the second conversion chip 130 are both connected to the input end of the switch 140, and the output end of the switch 140 is connected to the socket 150;
the first output terminal of the first conversion chip 120 can output RGB signals, and the second output terminal of the first conversion chip 120 and the output terminal of the second conversion chip 130 can output single-ended horizontal synchronization signals and single-ended vertical synchronization signals.
Through above-mentioned 3 line XGA video signal conversion equipment, be provided with two conversion chips, these two conversion chips can realize the conversion that contains the XGA video signal of line field signal and the XGA video signal that has independent line field signal in the RGB signal respectively, the realization separates line field signal and RGB signal to the XGA video signal that contains the line field signal in the RGB signal, and convert single-ended signal, the realization becomes single-ended signal output with line field signal conversion to the XGA video signal that has independent line field signal, this kind of 3 line XGA video signal conversion equipment simple structure can realize having RGB and including line field signal and have the conversion of independent line field signal general, need not set up two kinds of circuit conversion structures respectively, have convenient to use and the advantage that the commonality is strong.
Specifically, as shown in fig. 1, the 3-wire XGA video signal conversion apparatus further includes a driving chip 160, an input terminal of the driving chip 160 is connected to the second output terminal of the first conversion chip 120, and an output terminal of the driving chip 160 is connected to an input terminal of the switch 140.
Preferably, the driving chip comprises a driving chip with model number SN74LVC8T 245.
Preferably, the first conversion chip comprises a chip with the model number AD8145 YCPZ-RL.
Preferably, the second conversion chip comprises a chip with model number DS26LS32 MJ/883.
Specifically, the 3-wire XGA video signal conversion apparatus further includes three diodes, each of which is disposed between the first output terminal of the first conversion chip and the socket, and the R, G, B signal output from the first output terminal of the first conversion chip is input to the socket after passing through the three diodes, respectively.
Preferably, the socket comprises a standard VGA socket.
In the XGA video signal including the line-field signal in the RBG signal, the RGB signal is separated from the line-field signal by the first conversion chip 120 and converted into the single-ended signal, the RGB signal is output from the standard VGA socket 150 through the diode, and the line-field signal is also output from the same connector through the driver chip 160.
For XGA video signals with separate line-field signals, the line-field signals are converted into single-ended signals using the second conversion chip 130, and output from the same standard VGA socket 150.
It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (7)
1. A 3-wire XGA video signal conversion apparatus, characterized in that the 3-wire XGA video signal conversion apparatus comprises: the input connector comprises a first connecting end and a second connecting end, the first connecting end is used for outputting a first XGA video signal, the first XGA video signal is an XGA video signal containing a line and field signal in an RGB signal, the second connecting end is used for outputting a second XGA video signal, and the second XGA video signal is an XGA video signal with a single line and field signal;
the input end of the first conversion chip is connected with the first connecting end, the input end of the second conversion chip is connected with the second connecting end, the first output end of the first conversion chip is connected with the socket, the second output end of the first conversion chip and the output end of the second conversion chip are both connected to the input end of the change-over switch, and the output end of the change-over switch is connected to the socket;
the first output end of the first conversion chip can output RGB signals, and the second output end of the first conversion chip and the output end of the second conversion chip can both output single-ended horizontal synchronizing signals and single-ended field synchronizing signals.
2. A 3-wire XGA video signal conversion device according to claim 1, further comprising a driver chip having an input terminal connected to the second output terminal of the first conversion chip and an output terminal connected to the input terminal of the changeover switch.
3. The 3-wire XGA video signal conversion device according to claim 2, wherein the driver chip includes a driver chip of model SN74LVC8T 245.
4. The 3-wire XGA video signal conversion apparatus according to claim 1, wherein the first conversion chip comprises a chip of a model AD8145 YCPZ-RL.
5. The 3-wire XGA video signal conversion device according to claim 1, wherein the second conversion chip comprises a chip of a model number DS26LS32 MJ/883.
6. A3-wire XGA video signal conversion device according to any one of claims 1 to 5, further comprising three diodes each disposed between the first output terminal of the first conversion chip and the socket, wherein R, G, B signals output from the first output terminal of the first conversion chip are input to the socket after passing through the three diodes, respectively.
7. A 3-wire XGA video signal conversion device according to claim 1, wherein the socket comprises a standard VGA socket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921432484.1U CN210431621U (en) | 2019-08-30 | 2019-08-30 | 3 line XGA video signal conversion equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921432484.1U CN210431621U (en) | 2019-08-30 | 2019-08-30 | 3 line XGA video signal conversion equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210431621U true CN210431621U (en) | 2020-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921432484.1U Active CN210431621U (en) | 2019-08-30 | 2019-08-30 | 3 line XGA video signal conversion equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210431621U (en) |
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2019
- 2019-08-30 CN CN201921432484.1U patent/CN210431621U/en active Active
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