CN1123835C - Computer system and method for outputting television analog signals therewith - Google Patents
Computer system and method for outputting television analog signals therewith Download PDFInfo
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- CN1123835C CN1123835C CN 00102221 CN00102221A CN1123835C CN 1123835 C CN1123835 C CN 1123835C CN 00102221 CN00102221 CN 00102221 CN 00102221 A CN00102221 A CN 00102221A CN 1123835 C CN1123835 C CN 1123835C
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- analog signals
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Abstract
The present invention relates to a computer system and a method for outputting a television analog signal thereof, and the computer system comprises a playing device, an image display control device, a television analog signal output interface and a signal output control interface, wherein the image display control device provides a signal protecting program, and the signal output control interface is connected with playing software and the television analog signal output interface. The method for outputting a television analog signal of the computer system comprises the following steps: a computer is turned on; the playing device is started; when a movie is played, the signal protecting program is started; before a playing process is finished, the television analog signal output interface is firstly closed, and then the display process of the DVD movie is finished. The computer system and the method for outputting a television analog signal thereof can ensure that the playing content can not be easily copied.
Description
Technical field
The method of relevant a kind of computer system of the present invention and output television analog signals therewith thereof, using this method can the DVD playing back film; Be used to guarantee that Macrovision (its regulation defence program without legal authorization pirate dvd content of preventing for being formulated by DVD association) resist technology has more integrality on computer system is used.
Background technology
Along with digitized video development of technology and multimedia in vogue, PC (desktop or notebook computer) collocation has DVD playing device (or DVD-ROM) also to become a kind of trend.With reference to Fig. 1, it is the composition synoptic diagram of DVD movie system in a computer system, and other unit of computer system are not shown among the figure.Among the figure, DVD playing device 10a reads the data of DVD film under the driving of DVD playout software 10b; The data of being read by display 14 output image signal of computer system, also can export television analog signals therewith to TV (not shown) display by a TV signal output interface 16 again through the processing of an image display control device 12a.At this; above-mentioned image display control device 12a; can be the VGA control device that comprises the VGA control wafer; the VGA control wafer of supporting TV output is arranged now, the image defence program of supporting Macrovision is arranged, more so among Fig. 1; when DVD playout software 10b driving DVD playing device 10a reads the DVD film; generally speaking the Macrovision defence program should be started, so that television analog signals therewith is carried out coding protection, in order to avoid copyright is invaded.
Yet, the Macrovision defence program is started by the DVD playout software, because each supplier, designed DVD playout software is not quite similar, if the DVD playout software does not start or can't start the Macrovision defencive function that the VGA control wafer is provided, television analog signals therewith is not subjected to coding protection and then is subject to pirate; This computer system promptly loses the defencive function of Macrovision and to the integrality of copyright protection.
Summary of the invention
The object of the present invention is to provide the method for a kind of computer system and output television analog signals therewith thereof; be applicable to the DVD Play System (this computer system has the VGA control device of supporting the TV output function) that is arranged on the computer system; so that make the computer system that contains the DVD Play System; only when the DVD playing back film, can export television analog signals therewith to TV; and the television analog signals therewith of being exported all passes through the processing of Macrovision defence program, to strengthen the integrality of DVD film copyright protection.
For the present invention that achieves the above object takes following measure:
A kind of computer system of the present invention comprises: a DVD playing device, an image display control device and a television analog signals therewith output interface.
The DVD playing device is in order to read and to export the data of DVD film, and image display control device connects the DVD playing device, and the television analog signals therewith output interface connects image display control device;
It is characterized in that: also comprise a signal output control interface.
Image display control device provides the signal protection program and controls the demonstration of image data;
Signal output control interface connects DVD playout software and television analog signals therewith output interface; Signal output control interface is for the open and close of DVD playing device with control television analog signals therewith output interface;
Wherein, DVD playing device one starts, and by signal output control interface, the television analog signals therewith output interface is opened simultaneously; When the DVD playing device begins the DVD playing back film, enabling signal defence program simultaneously then, the image simulation signal of being exported via the television analog signals therewith output interface can obtain specific coding protection; Before the DVD playing device is play end, by signal output control interface, carry out the control of closing television analog signal output interface earlier, afterwards, stop the broadcast of DVD film again.
Wherein: described image display control device is the VGA control device, the Macrovision defence program that described signal protection program is provided for the VGA control device.
Wherein: BIOS interrupt call or cmos switch that described signal output control interface is a computer system are set the control that described television analog signals therewith output interface is opened and closed according to its default program.
The method of a kind of computer system output television analog signals therewith of the present invention comprises the steps:
With computer system boot-strap, utilize signal output control interface to close its television analog signals therewith output interface;
Start the DVD playing device, afterwards, the DVD playing device by signal output control interface, is opened control to the television analog signals therewith output interface simultaneously;
When DVD Play System DVD playing back film at the beginning, then enabling signal defence program simultaneously makes the image simulation signal of television analog signals therewith output interface output obtain specific coding protection;
Before above-mentioned DVD played finishes, by signal output control interface, the television analog signals therewith output interface is carried out closing control earlier, afterwards, finish the broadcast of DVD film again.
Wherein: described signal output control interface is set for the BIOS interrupt call or the cmos switch that additionally increase and be set in the computer system, according to its default program described television analog signals therewith output interface is opened and closed control.Wherein: the Macrovision defence program that described signal protection program is provided for described VGA control device.
Reaching embodiment in conjunction with the accompanying drawings is described in detail as follows specific structural features of the present invention and method feature:
Description of drawings:
Fig. 1: in computer system, the composition synoptic diagram of DVD movie system.
Fig. 2: the circuit block diagram of the computer system embodiment that the present invention can the DVD playing back film;
In the control method of Fig. 3 television analog signals therewith output of the present invention, the DVD playing device is from starting the process flow diagram that finishes to playing.
Embodiment
As shown in Figures 2 and 3, Fig. 2 represents the circuit block diagram of the computer system that the present invention can the DVD playing back film, and in the control method of Fig. 3 for television analog signals therewith output of the present invention, the DVD playing device is from starting the schematic flow sheet that finishes to playing.In the present embodiment, other unit of computer system are omitted for the purpose of interest of clarity.
As shown in Figure 2, computer system of the present invention comprises at least as lower unit: DVD playing device 10a, via the driving of DVD playout software 10b, to read the data of DVD film; An image display control device 12a for comprising the VGA control device of VGA control wafer, gives above-mentioned computer system in order to support the TV output function in this embodiment, and Macrovision defence program 12b is provided and controls the demonstration of image data; A TV signal output interface 16: and TV signal output control interface 18 offers above-mentioned DVD playing device, with the unlatching of control television analog signals therewith output interface 16 or close; In this embodiment, signal output control interface 18 is that the BIOS interrupt call or the cmos switch of computer system set the control of television analog signals therewith output interface 16 being opened or closing according to its default program.
Of the present invention can the DVD playing back film computer system (Fig. 2) and the difference of existing system (Fig. 1), be mainly collocation television analog signals therewith output control method proposed by the invention, a TV signal output control interface 18 is provided in addition, when making computer system of the present invention, promptly in advance required control program is write among the BIOS in the said system or among the CMOS of system, make the mode that DVD playout software 10b can call out or cmos switch is set by BIOS, and realize control above-mentioned television analog signals therewith output interface 16.
Television analog signals therewith output control method of the present invention comprises the steps:
At first, make after the computer system boot-strap, promptly close its television analog signals therewith output interface 16, and cut off all possible simulating signal output.
Provide a signal output control interface to above-mentioned DVD Play System 10a, in order to the unlatching of controlling above-mentioned television analog signals therewith output interface 16 or close, the control that also is about to above-mentioned television analog signals therewith output interface 16 is given DVD Play System 10a (or playout software 10b).Signal output control interface 18, as setting for the BIOS interrupt call or the cmos switch that are set in advance in the computer system, and the control of television analog signals therewith output interface 16 being opened or closing according to its default program.
As shown in Figure 3, it is that the DVD playing device is from starting to playing between tailend the control flow chart of television analog signals therewith output of the present invention.
Setting up procedure 30 starts DVD playing device 10a; Then, carry out step 31, BIOS interrupts or CMOS configuration switch (that is by signal output control interface 18) via calling out to open DVD playing device 10a, and television analog signals therewith output interface 16 is opened.
Carry out defence program 32, the DVD playing device is play (play) DVD film at the beginning, and Macrovision defence program (or other the possible defence programs) 12b that is provided among the VGA image display control device 12a then is provided the DVD playout software simultaneously.Playout software 10b drives; the DVD film data is exported to the display 14 of computer system by image display control device 12a, and will add Macrovision protected data (user can need be coupled to TV with the shadow simulating signal according to it and view and admire) via the image simulation signal that television analog signals therewith output interface 16 is exported.
Before the DVD playing device is play and is finished, must be earlier via calling out BIOS interruption or CMOS configuration switch (that is by signal output control interface 18), television analog signals therewith output interface 16 is closed, i.e. step 33 stops the playback action of DVD film afterwards again.
Compared with prior art, the present invention has following effect:
From the above, the control method of television analog signals therewith output of the present invention makes the computer system that contains the DVD playing device, only just the output of VGA signal of video signal can be delivered to TV by television analog signals therewith output interface 16 when the DVD playing back film; In addition, the DVD playout software must start the Macrovision defence program, so if there is the people to want the image simulation signal is copied with recording device, because the image simulation signal is subjected to the event of Macrovision protection, so can't successfully copy.Like this, can guarantee Macrovision ... Deng resist technology, in the application of computer system, have more integrality.In addition, computer system of the present invention can fully be used the control method of above-mentioned television analog signals therewith output, thus be can complete copyright protection the computer Play System.
More than narration is to borrow embodiment that architectural feature of the present invention is described, is not to be used to limit protection scope of the present invention.
Claims (6)
1, a kind of computer system comprises: a DVD playing device, an image display control device and a television analog signals therewith output interface;
The DVD playing device is in order to read and to export the data of DVD film; Image display control device connects the DVD playing device, and the television analog signals therewith output interface connects image display control device;
It is characterized in that: also comprise a signal output control interface;
Image display control device provides the signal protection program and controls the demonstration of image data;
Signal output control interface connects DVD playing device and television analog signals therewith output interface;
Signal output control interface is for the open and close of DVD playing device with control television analog signals therewith output interface;
Wherein, DVD playing device one starts, and by signal output control interface, the television analog signals therewith output interface is opened simultaneously; When the DVD playing device begins the DVD playing back film, enabling signal defence program simultaneously then, the image simulation signal of being exported via the television analog signals therewith output interface can be protected; Before the DVD playing device is play end, by signal output control interface, carry out the control of closing television analog signal output interface earlier, afterwards, stop the broadcast of DVD film again.
2, computer system according to claim 1 is characterized in that: described image display control device is the VGA control device, the Macrovision defence program that described signal protection program is provided for the VGA control device.
3, computer system according to claim 1, it is characterized in that: described signal output control interface is that BIOS interrupt call or the cmos switch that is used for the controlling computer system set the control that described television analog signals therewith output interface is opened and closed according to its default program.
4, a kind of method of computer system output television analog signals therewith comprises the steps:
After the computer system boot-strap, utilize signal output control interface to close its television analog signals therewith output interface;
Start the DVD playing device, afterwards, the DVD playing device by signal output control interface, is opened control to the television analog signals therewith output interface simultaneously;
When DVD playing device DVD playing back film at the beginning, then enabling signal defence program simultaneously is protected the image simulation signal of television analog signals therewith output interface output;
Before above-mentioned DVD playing device is play end, by signal output control interface, the television analog signals therewith output interface is carried out closing control earlier, afterwards, finish the broadcast of DVD film again.
5, method according to claim 4, it is characterized in that: described signal output control interface opens and closes control according to its default program to described television analog signals therewith output interface for additionally increasing and be used for being controlled at the B10S interrupt call or the cmos switch setting of computer system.
6, method according to claim 4 is characterized in that: described signal protection program is the Macrovision defence program.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00102221 CN1123835C (en) | 2000-02-12 | 2000-02-12 | Computer system and method for outputting television analog signals therewith |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00102221 CN1123835C (en) | 2000-02-12 | 2000-02-12 | Computer system and method for outputting television analog signals therewith |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1309363A CN1309363A (en) | 2001-08-22 |
| CN1123835C true CN1123835C (en) | 2003-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00102221 Expired - Fee Related CN1123835C (en) | 2000-02-12 | 2000-02-12 | Computer system and method for outputting television analog signals therewith |
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| Country | Link |
|---|---|
| CN (1) | CN1123835C (en) |
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- 2000-02-12 CN CN 00102221 patent/CN1123835C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1309363A (en) | 2001-08-22 |
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| C14 | Grant of patent or utility model | ||
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Owner name: YINGTEWEI DIGITAL TECH CO., LTD. Free format text: FORMER OWNER: SHENJI SCIENCE AND TECHNOLOGY CO.,LTD. Effective date: 20040924 |
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Effective date of registration: 20040924 Address after: Taiwan, China Patentee after: Yingte Digital Tech Co., Ltd. Address before: Taiwan, China Patentee before: Shenji Science & Technology Co., Ltd. |
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Owner name: COREL CORPORATION Free format text: FORMER NAME OR ADDRESS: YINGTEWEI DIGITAL TECH CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: Taiwan, China Patentee after: Corel Corporation Address before: Taiwan, China Patentee before: Yingte Digital Tech Co., Ltd. |
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Owner name: SHENJI SCIENCE AND TECHNOLOGY CO.,LTD. Free format text: FORMER OWNER: COREL CORPORATION Effective date: 20091120 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Effective date of registration: 20091120 Address after: Taiwan, Hsinchu, China Science and Industry Park, Hsinchu County Rd two, No. 4, building 1 Patentee after: Shenji Science & Technology Co., Ltd. Address before: Taiwan, China Patentee before: Corel Corporation |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20031008 Termination date: 20170212 |