CN1177476C - Video signal conversion method for computer - Google Patents
Video signal conversion method for computerInfo
- Publication number
- CN1177476C CN1177476C CNB001348132A CN00134813A CN1177476C CN 1177476 C CN1177476 C CN 1177476C CN B001348132 A CNB001348132 A CN B001348132A CN 00134813 A CN00134813 A CN 00134813A CN 1177476 C CN1177476 C CN 1177476C
- Authority
- CN
- China
- Prior art keywords
- signal
- video signal
- video
- computer
- control unit
- 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.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 22
- 230000000007 visual effect Effects 0.000 claims abstract description 5
- 230000000694 effects Effects 0.000 claims description 11
- 230000005236 sound signal Effects 0.000 claims description 7
- 238000013459 approach Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
Images
Landscapes
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention is a video signal conversion method of a computer, mainly before entering the working system after the computer is started, utilize the basic input/output system to judge whether the purpose that users start the machine is to watch TV or computer operation first, when users want to watch TV, direct carry on modulating, search control of the video signal with the modulating unit of the video signal, video signal search unit, video signal control unit of the basic input/output system control, drive the display to display the video signal as the visual image finally. The video signal conversion method of the computer of the invention can make the operation program of the computer watching TV approach to the traditional TV program, the operation process is simple and convenient, and the long waiting time required by entering the operation system can be saved.
Description
(1) technical field
The present invention relates to a kind of video information conversion method of computer, particularly a kind ofly need not enter operating system, just can utilize the video information conversion method of the computer that computer televiews.
(2) background technology
In fashion day by day along with multimedia and the Internet, and the thing followed is widely applied software development, the function of computer is no longer limited to traditional program calculating of what or document processing, but gets involved gradually among the daily life, becomes our life and the indispensable good companion of amusement.Particularly some young scholars or solitary youth more are inclined to what and use merits such as computer replacement TV, video recorder to answer, and purchase the overhead cost of selling household electrical appliances with saving.
The method that tradition utilizes computer to teleview except the mounted video signal card of computer itself (VGA Card), also need be bought an external tuner card (Tuner Card).See also shown in Figure 1, tuner card 20 includes a video signal modulating unit 21 and a video signal retrieval unit 22, wherein cable of cable TV 10 is the video signal modulating units 21 that are connected to tuner card 20, after the video signal V demodulation of cable of cable TV 10 being carried by video signal modulating unit 21, asking for via video signal retrieval unit 22 is a recall signal C again, and by VGA card 30 driving displays of installing in the computer 40 recall signal C is shown as visual image.
Comprise in the above-mentioned method of utilizing computer to teleview that video signal modulating unit 21, video signal retrieval unit 22, video signal card 30 and display 40 all need to control by operating system, therefore when the user wants to utilize computer to teleview, must be introduced into operating systems such as Windows or OS2, restarting the control program of tuner card 20 and video signal card 30 can watch, compare with the operation sequence that tradition televiews, longer by the what stand-by period, comparatively inconvenience in the use.
(3) summary of the invention
The mirror what is above-mentioned to be utilized in the method that computer televiews, the problem of waits for too long, main purpose of the present invention is: a kind of video information conversion method of computer, can not install as yet or not enter as yet under the situation of operating system at computer, directly carry out the video signal conversion with motherboard control video signal demodulation chip, devices such as video signal retrieval chip, video signal control chip and display, so that this kind video signal conversion operations traditional TV service routine of convergence what more, and need not pass through very long wait and operating process.
For reaching above-mentioned purpose, the video information conversion method of computer of the present invention is used what and is installed as yet or do not enter the computer of operating system as yet, and its step includes:
Described computer is obtained a power supply starting signal; Utilize ROM-BIOS to distinguish that described power supply starting signal is that a TV is selected a signal or an operation selection signal; When described power supply starting signal is TV selection signal, described computer initialization one video signal control unit, a video signal modulating unit, a video signal retrieval unit and a sound effect control unit; Obtain a channel by inputting interface and choose signal; Choose signal according to described channel, obtain a video signal and a sound signal by cable of cable TV; By described video signal modulating unit described video signal is demodulated into a restituted signal; By described video signal retrieval unit described restituted signal being asked for is a recall signal; And drive a driving display by described video signal control unit described recall signal is shown as visual image; Present described sound signal by described sound effect control unit drives loudspeaker.
Its method of operation approaches to operate the program that television set televiews when using method of the present invention to teleview with computer, need not pass through very long stand-by period and complicated operations process.Because computer has television function, can reduce the expense of family's expense in addition.
(4) description of drawings
Relevant detailed content of the present invention and technology, conjunction with figs. is described as follows:
Fig. 1: the functional block diagram of existing video information conversion method;
Fig. 2 A: the flow chart of video information conversion method of the present invention;
Fig. 2 B: the flow chart of video information conversion method of the present invention;
Fig. 3: be the functional block diagram of video information conversion method of the present invention.
The graphical sysmbol explanation:
10 ... cable of cable TV
20 ... tuner card
21 ... the video signal modulating unit
22 ... the video signal retrieval unit
30 ... the video signal card
31 ... the video signal control unit
40 ... display
50 ... power supply unit
60 ... basic output/input unit
62 ... hard disk
70 ... the sound effect control chip
80 ... inputting interface
90 ... loudspeaker
A ... sound signal
C ... recall signal
P ... power supply starting signal
S ... channel is chosen signal
T ... restituted signal
V ... video signal
(5) embodiment
Video information conversion method flow chart of the present invention with and functional block diagram, see also shown in Fig. 2 A, the 2B, 3.At first, obtain a power supply starting signal P by power supply unit 50, the power supply of expression computer has been activated (step 101); Wherein, the computer of indication can be PC or notebook computer etc. herein; Secondly, utilize ROM-BIOS (BIOS) 60 to distinguish that power supply starting signal P is that a TV is selected a signal or an operation selection signal (step 102); When power supply starting signal P was an operation selection signal, 60 of ROM-BIOS (BIOS) were carried out the normal boot-strap audit program, and are written into operating system (step 103) by hard disk 62; When power supply starting signal P is TV selection signal, initialization one video signal modulating unit 21, a video signal retrieval unit 22, a video signal control unit 31 and a sound effect control unit 70 (step 104); Wherein, video signal modulating unit 21 can be a video signal modulation chip (TV Tuner Chip), video signal retrieval unit 22 can be video signal retrieval chip (Capture Chip), video signal control unit 31 can be a video signal control chip (VGA Chip), and sound effect control unit 70 can be a sound effect control chip (Audio Chip); Then obtain a channel and choose signal S (step 105) and choose signal S, obtain a video signal V and a sound signal A (step 106) by cable of cable TV 10 according to channel by inputting interface 80; By video signal modulating unit 21 video signal V being demodulated into that a restituted signal T (step 107) asks for restituted signal T by video signal retrieval unit 22 is a recall signal C (step 108): start zoom video port (the ZV port: Zoomed Video port) (step 109) between video signal retrieval unit 22 and the video signal control unit 31; By zoom video (ZV) port recall signal C is sent to video signal control unit 31 (step 110); By video signal control unit 31, drive a display 40 recall signal C is shown as visual image (step 111); At last, drive loudspeaker 90 by sound effect control unit 70 and present sound signal A (step 112).
Claims (7)
- The video information conversion method of 1 one kinds of computers, the application what is installed as yet or is not entered the computer of operating system as yet, it is characterized in that its step comprises:Described computer is obtained a power supply starting signal;Utilize ROM-BIOS to distinguish that described power supply starting signal is that a TV is selected a signal or an operation selection signal;When described power supply starting signal was TV selection signal, described computer initialization was installed on a video signal control unit, a video signal modulating unit, a video signal retrieval unit and the sound effect control unit in the described computer;Obtain a channel by inputting interface and choose signal;Choose signal according to described channel, obtain a video signal and a sound signal by cable of cable TV;By described video signal modulating unit described video signal is demodulated into a restituted signal;By described video signal retrieval unit described restituted signal being asked for is a recall signal; AndDrive a driving display by described video signal control unit described recall signal is shown as visual image;Present described sound signal by described sound effect control unit drives loudspeaker.
- The video information conversion method of 2 computers as claimed in claim 1 is characterized in that its step also comprises: when described power supply starting signal is an operation selection signal, be written into the operating system of described computer.
- The video information conversion method of 3 computers as claimed in claim 1, it is characterized in that by described video signal retrieval unit described restituted signal being asked for is that the step of a recall signal also comprises:Start the zoom video port between described video signal retrieval unit and the video signal control unit;By described zoom video port described recall signal is sent to described video signal control unit.
- 4 video information conversion methods as claimed in claim 1 is characterized in that described video signal control unit is a video signal control chip.
- The video information conversion method of 5 computers as claimed in claim 1 is characterized in that described video signal modulating unit is a video signal modulation chip.
- The video information conversion method of 6 computers as claimed in claim 14 is characterized in that described video signal retrieval unit is a video signal retrieval chip.
- The video information conversion method of 7 computers as claimed in claim 1 is characterized in that described sound effect control unit is a sound effect control chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001348132A CN1177476C (en) | 2000-12-01 | 2000-12-01 | Video signal conversion method for computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001348132A CN1177476C (en) | 2000-12-01 | 2000-12-01 | Video signal conversion method for computer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1355653A CN1355653A (en) | 2002-06-26 |
| CN1177476C true CN1177476C (en) | 2004-11-24 |
Family
ID=4596434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001348132A Expired - Fee Related CN1177476C (en) | 2000-12-01 | 2000-12-01 | Video signal conversion method for computer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1177476C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100507825C (en) * | 2004-12-20 | 2009-07-01 | 建碁股份有限公司 | Computer image system and processing device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050160474A1 (en) * | 2004-01-15 | 2005-07-21 | Fujitsu Limited | Information processing device and program |
-
2000
- 2000-12-01 CN CNB001348132A patent/CN1177476C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100507825C (en) * | 2004-12-20 | 2009-07-01 | 建碁股份有限公司 | Computer image system and processing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1355653A (en) | 2002-06-26 |
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| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20041124 Termination date: 20121201 |