CN1667568A - Interface arrangement and display card - Google Patents
Interface arrangement and display card Download PDFInfo
- Publication number
- CN1667568A CN1667568A CN 200410028296 CN200410028296A CN1667568A CN 1667568 A CN1667568 A CN 1667568A CN 200410028296 CN200410028296 CN 200410028296 CN 200410028296 A CN200410028296 A CN 200410028296A CN 1667568 A CN1667568 A CN 1667568A
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- display
- vision signal
- port
- connectivity port
- signal
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Abstract
The invention relates to an interface arrangement, which comprises the first splicing port, the second splicing port, the third splicing port and a switching unit.The first splicing port is connected to the first input port of a display and the second splicing port is connected to the second output port of display, while the third input port is connected to a display card to receive video signal and control signal from display card and a switching unit is seperately connected to the first, the second and the third splicing port to decide video signal mode and output video signal into the first or the second input port of display. The invention supplies a display card with interface arrangement function to input different mode video signal to input port of the same mode display.
Description
Technical field
The present invention particularly writes a kind of interface arrangement and the display card of the input port of display relevant for a kind of error in data that prevents relevant for a kind of interface arrangement and display card.
Background technology
Traditional monitor, for example LCD (LCD monitor) or cathode-ray tube display (CRTmonitor), in manufacture process, all must use display card that display data passage (DDC) data are write the input port of display, make the display after the shipment be able to normal receiving video signals.
Generally for dual input display (Dual input monitor), Video Graphics Array (Video Graphics Array is arranged on the display, VGA) input port, digital picture interface (DigitalVisual Interface is also arranged, DVI)) input port is in order to receive VGA and DVI signal respectively.Fig. 1 represents that conventional DDC data write the calcspar of display.The DDC data writing mode of existing dual input display as shown in Figure 1, a display card 10 is via a VGA connectivity port C
V1Output has the vision signal S of one first form (for example VGA form)
V1Or the vision signal S of second form (for example DVI form)
V2Desire is with the vision signal S of first form
V1Write the VGA input port C of a display 30
V2The time, vision signal need be passed through a VGA-VGA (VGA to VGA) transmission line L
V1-V2Transmit; When will having the vision signal S of second form
V2Write the DVI input port C of display 30
D1The time, vision signal need be passed through a VGA-DVI (VGA to DVI) transmission line L
V1-D1Transmit.Yet this mode is write fashionablely carrying out vision signal, may cause write error, for example the vision signal S of first form
V1Via VGA-DVI transmission line L
V1-D1, be written to the DVI input port C of display 30
D1, or the vision signal S of second form
V2Via VGA-VGA transmission line L
V1-V2, be written to the VGA input port C of display 30
V2, this mistake writes and will cause the display can't normal operation, even causes the waste of manufacturing cost.
Summary of the invention
In view of this, fundamental purpose of the present invention particularly writes a kind of interface arrangement and the display card of the input port of display relevant for a kind of error in data that prevents for a kind of interface arrangement and display card are provided.
For achieving the above object, the present invention proposes a kind of interface arrangement.Interface arrangement comprises one first, second, third connectivity port and a switching unit.First and second connectivity port connects first and second input port of a display respectively, the 3rd connectivity port connects a display card, in order to receive a vision signal and a control signal, switch unit is judged the form of vision signal according to control signal, wherein, when vision signal is the vision signal of one first form, switch unit is sent to the vision signal of first form first input end mouth of display via first connectivity port, in addition, when vision signal is the vision signal of one second form, switch unit then is sent to the vision signal of second form second input port of display via second connectivity port, whereby in order to the vision signal of different-format is inputed to predetermined display input port according to the connectivity port of this form, so that display is normally received the vision signal of different-format.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, some preferred embodiments cited below particularly, and conjunction with figs. are described in detail as follows.
Description of drawings
Fig. 1 represents that conventional DDC data write the calcspar of display;
Fig. 2 represents the calcspar of interface arrangement of the present invention and peripherals;
Fig. 3 represents the circuit diagram of switch unit of the present invention;
Fig. 4 represents the calcspar of display card of the present invention and peripherals;
Symbol description
The 10-display card, 20-interface arrangement, 30-display, 40-switch unit, 50-multiplexer, 60-data processing unit, S
V-vision signal, S
C-control signal, S
V1The vision signal of-the first form, S
V2The vision signal of-the second form, C
1-the first connectivity port, C
2-the second connectivity port, C
3-Di three connectivity ports, I
1-first input end mouth, I
2-the second input port, L
1-logical signal, R-resistance, Q
1-transistor, C
V1-VGA connectivity port, C
V2-VGA input port, C
D1-DVI input port, L
V1-V2-VGA-VGA (VGA to VGA) transmission line, L
V1-D1-VGA-DVI (VGA to DVI) transmission line.
Embodiment
Embodiment one:
Fig. 2 represents the calcspar of interface arrangement of the present invention and peripherals.As shown in Figure 2, an interface arrangement 20 is connected between a display card 10 and the display 30, and interface arrangement 20 comprises one first connectivity port C
1, the second connectivity port C
2, the 3rd connectivity port C
3, and one switch unit 40.
The principle of work of present embodiment interface arrangement is as described below.The first connectivity port C
1(VGA connectivity port) connects a first input end mouth I of display
1(VGA input port), the second connectivity port C
2(DVI connectivity port) connects one second input port I of display
2(DVI input port), and the 3rd connectivity port C
3(VGA connectivity port) connects display card 10, in order to receive a vision signal S
VAn and control signal S
CSwitch unit 40 is according to control signal S
C, judge vision signal S
VThe form of (data that meet the DDC standard) is the vision signal S of first form
V1The vision signal S of (VGA data) or second form
V2(DVI data); When switch unit 40 is judged vision signal S
VBe the vision signal S of first form
V1The time, switch unit 40 is about to the vision signal S of first form
V1Via the first connectivity port C
1, be sent to the first input end mouth I of display 30
1, make first input end mouth I
1Has the vision signal S that can receive first form
V1Function.In addition, as switch unit 40 judgement vision signal S
VBe the vision signal S of second form
V2The time, 40 vision signal S of switch unit with second form
V2Via the second connectivity port C
2, be sent to the second input port I of display 30
2, make the second input port I
2Has the vision signal S that can receive second form
V2Function.
Please consult Fig. 3 again, Fig. 3 represents the circuit diagram of switch unit of the present invention.As shown in Figure 3, a transistor Q
1According to control signal S
C, in order to judge vision signal S
VForm, and export a logical signal L
1One multiplexer 50 is according to logical signal L
1, in order to decision vision signal S
VBy the first connectivity port C
1Or the second connectivity port C
2Output.For example, as control signal S
CWhen being in high level (high level), transistor Q
1The logical signal L of output
1Be low level (low level) that this moment, multiplexer 50 was according to this low level logical signal L
1, export the vision signal S of first form
V1, the anti-vision signal S that then exports second form
V2
Embodiment two:
Fig. 4 represents the calcspar of display card of the present invention and peripherals.As shown in Figure 4, a display card 10 connects a display 30, and display card 10 comprises a data processing unit 60, one first connectivity port C
1(VGA connectivity port), one second connectivity port C
2(DVI connectivity port) and one switches unit 40.
The principle of work of present embodiment display card is as described below.Data processing unit 60 is in order to export a vision signal S
V(data that meet the DDC standard) and a control signal S
C, the first connectivity port C
1A first input end mouth I who connects display
1(VGA input port), and the second connectivity port C
2The one second input port I that connects display
2(DVI input port).Switch unit 40 connects data processing unit 60, and according to control signal S
C, judge vision signal S
VForm be the vision signal S of first form
V1The vision signal S of (VGA data) or second form
V2(DVI data).When switch unit 40 is judged vision signal S
VBe the vision signal S of first form
V1The time, switch unit 40 is about to the vision signal S of first form
V1Via the first connectivity port C
1, be sent to the first input end mouth I of display 30
1, make first input end mouth I
1Has the vision signal S that can receive first form
V1Function; When switch unit 40 is judged vision signal S
VBe the vision signal S of second form
V2The time, 40 vision signal S of switch unit with second form
V2Via the second connectivity port C
2, be sent to the second input port I of display 30
2, make the second input port I
2Has the vision signal S that can receive second form
V2Function.
In sum; though the present invention with two preferred embodiments openly as above; right its is not in order to limit the present invention; any those skilled in the art; under the situation that does not break away from the spirit and scope of the present invention; can carry out various changes and modification, so protection scope of the present invention is as the criterion when looking the claim restricted portion that is proposed.
Claims (14)
1. interface arrangement, between a display card and a display, this display has a first input end mouth and one second input port, and to receive the signal of one first form and one second form respectively, this interface arrangement comprises:
One first connectivity port connects this first input end mouth of this display;
One second connectivity port connects this second input port of this display;
One the 3rd connectivity port connects this display card, in order to receive a vision signal and a control signal;
One switches the unit, connects this first, second, third connectivity port, and this switch unit is judged the form of this vision signal according to this control signal;
When this vision signal had this first form, this switch unit via this first connectivity port, was sent to this first input end mouth of this display with this vision signal; And
When this vision signal had this second form, this switch unit via this second connectivity port, was sent to this second input port of this display with this vision signal.
2. interface arrangement as claimed in claim 1, wherein, this this vision signal with this first form is Video Graphics Array data.
3. interface arrangement as claimed in claim 1, wherein, this this vision signal with this second form is a digital picture interface data.
4. interface arrangement as claimed in claim 1, wherein, this vision signal is one to meet the data of display data passage (DDC) standard.
5. interface arrangement as claimed in claim 1, wherein, this switch unit comprises:
One transistor according to this control signal, is judged the form of this vision signal, and exports a logical signal;
One multiplexer is according to this logical signal, to determine this vision signal by this first connectivity port or the output of this second connectivity port.
6. interface arrangement as claimed in claim 1, wherein, this first input end mouth, the first and the 3rd connectivity port are a VGA connecting port.
7. interface arrangement as claimed in claim 1, wherein, this second input port and second connectivity port are a digital picture interface connectivity port.
8. a display card is connected with a display, and this display has a first input end mouth and one second input port, and to receive the signal of one first form and one second form respectively, this display card comprises:
One data processing unit is in order to export a vision signal and a control signal;
One first connectivity port connects this first input end mouth of this display;
One second connectivity port connects this second input port of this display;
One switches the unit, connects this first, second connectivity port and this data processing unit, and this switch unit is judged the form of this vision signal according to this control signal;
When this vision signal had this first form, this switch unit via this first connectivity port, was sent to this first input end mouth of this display with this vision signal; And
When this vision signal had this second form, this switch unit via this second connectivity port, was sent to this second input port of this display with this vision signal.
9. display card as claimed in claim 8, wherein, this this vision signal with this first form is Video Graphics Array data.
10. display card as claimed in claim 8, wherein, this this vision signal with this second form is a digital picture interface data.
11. display card as claimed in claim 8, wherein, this vision signal is one to meet the data of display data passage (DDC) standard.
12. display card as claimed in claim 8, wherein, this switch unit comprises:
One transistor according to this control signal, is judged the form of this vision signal, and exports a logical signal;
One multiplexer is according to this logical signal, to determine this vision signal by this first connectivity port or the output of this second connectivity port.
13. display card as claimed in claim 8, wherein, this first input end mouth and second connectivity port are a VGA connecting port.
14. display card as claimed in claim 8, wherein, this second input port and second connectivity port are a digital picture interface connectivity port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410028296 CN1667568A (en) | 2004-03-09 | 2004-03-09 | Interface arrangement and display card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410028296 CN1667568A (en) | 2004-03-09 | 2004-03-09 | Interface arrangement and display card |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1667568A true CN1667568A (en) | 2005-09-14 |
Family
ID=35038681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410028296 Pending CN1667568A (en) | 2004-03-09 | 2004-03-09 | Interface arrangement and display card |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1667568A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100517460C (en) * | 2007-05-15 | 2009-07-22 | 四川长虹电器股份有限公司 | Adaptive method for display screen to different interface type |
| CN101446889B (en) * | 2007-12-31 | 2011-08-17 | 旭上绘图股份有限公司 | Method and system for supporting multiple display devices |
| CN102387331A (en) * | 2010-08-31 | 2012-03-21 | 宏碁股份有限公司 | Playing device and playing method |
| CN102695023A (en) * | 2011-03-23 | 2012-09-26 | 宏碁股份有限公司 | Video signal processing system and method |
| CN101470510B (en) * | 2007-12-26 | 2013-03-06 | 微星科技股份有限公司 | Main unit apparatus capable of saving energy consumption of drawing card, and computer system |
| CN103365422A (en) * | 2012-03-30 | 2013-10-23 | 宏正自动科技股份有限公司 | Digital/analog video switching device and method and keyboard/screen/mouse switching device and method |
| CN105117362A (en) * | 2006-05-31 | 2015-12-02 | 创世纪微芯片公司 | Connecting AC-coupled systems and DC-coupled systems |
-
2004
- 2004-03-09 CN CN 200410028296 patent/CN1667568A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105117362A (en) * | 2006-05-31 | 2015-12-02 | 创世纪微芯片公司 | Connecting AC-coupled systems and DC-coupled systems |
| CN100517460C (en) * | 2007-05-15 | 2009-07-22 | 四川长虹电器股份有限公司 | Adaptive method for display screen to different interface type |
| CN101470510B (en) * | 2007-12-26 | 2013-03-06 | 微星科技股份有限公司 | Main unit apparatus capable of saving energy consumption of drawing card, and computer system |
| CN101446889B (en) * | 2007-12-31 | 2011-08-17 | 旭上绘图股份有限公司 | Method and system for supporting multiple display devices |
| CN102387331A (en) * | 2010-08-31 | 2012-03-21 | 宏碁股份有限公司 | Playing device and playing method |
| CN102695023A (en) * | 2011-03-23 | 2012-09-26 | 宏碁股份有限公司 | Video signal processing system and method |
| CN103365422A (en) * | 2012-03-30 | 2013-10-23 | 宏正自动科技股份有限公司 | Digital/analog video switching device and method and keyboard/screen/mouse switching device and method |
| CN103365422B (en) * | 2012-03-30 | 2016-04-13 | 宏正自动科技股份有限公司 | Digital/analog video switching device and method and keyboard/screen/mouse switching device and method |
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