CN202617293U - Television signal tuning device - Google Patents
Television signal tuning device Download PDFInfo
- Publication number
- CN202617293U CN202617293U CN 201220284155 CN201220284155U CN202617293U CN 202617293 U CN202617293 U CN 202617293U CN 201220284155 CN201220284155 CN 201220284155 CN 201220284155 U CN201220284155 U CN 201220284155U CN 202617293 U CN202617293 U CN 202617293U
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- CN
- China
- Prior art keywords
- signal
- coupled
- tuner
- descrambling
- transmission port
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- 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
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- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
本实用新型为一种电视信号调谐装置，用以连接一显示装置与一解扰装置，以将解扰过的电视射频信号源转换为解调信号输出至显示装置显示。电视信号调谐装置包括有一复合式输出端子耦接至解扰装置。此复合式输出端子提供显示装置的视频反馈信号予解扰装置，即可于特定地区直接通过电视信号调谐装置令显示装置接收电视射频信号。
The utility model is a television signal tuning device, which is used to connect a display device and a descrambling device to convert a descrambled television radio frequency signal source into a demodulated signal and output it to the display device for display. The television signal tuning device includes a composite output terminal coupled to the descrambling device. The composite output terminal provides a video feedback signal of the display device to the descrambling device, so that the display device can directly receive the television radio frequency signal through the television signal tuning device in a specific area.
Description
Technical field
The utility model relates to a kind of signal tuning device, particularly a kind of TV signal tuner in order to couple with display unit and descrambler.
Background technology
Watch TV programme to become the important amusement of most families, the method for general TV reception has two, one, through domestic TV, and the 2nd, through computer system.Domestic TV can directly receive TV RF signals and TV reception, and computer system then must install a TV signal tuner (for example TV card) in addition again additional TV RF signals just is able to TV reception through decoding processing.
And watch and need can TV signal be added some interference through authorizing the TV programme that just can watch for fear of unwarranted user in some particular locality (for example area, continent).The mode of TV signal scrambling is a lot, and one of them is the capable field sync signal adding interference signal with television image.The user then must utilize a descrambler, and the video feed signal descrambling of exporting through the combined type lead-out terminal (AV terminal) of domestic television set just is able to normally watch by the scrambled television program.
So, because the present applied TV card of computer system does not all have the combined type lead-out terminal video feed signal can be provided.Therefore, light possesses TV card and descrambler and still can't utilize computer system to watch by scrambling TV programme later.
The utility model content
In view of this; The utility model provides a kind of TV signal tuner that can couple with display unit and descrambler, has possessed TV card in the prior art and but still can't utilize computer system to watch by the problem of the TV programme after the scrambling with descrambler to solve.This TV signal tuner includes the combined type lead-out terminal and descrambler couples, and the signal transmission interface that couples with display unit.Make video feed signal that display unit can be through the output of this TV signal tuner to descrambler, make descrambler receive this video feed signal and respond the TV RF signals of output descrambling.
For reaching above-mentioned purpose, the utility model provides a kind of TV signal tuner, couples with a display unit and a descrambler, and this TV signal tuner includes:
One processing television signals unit comprises a tuner and a demodulator, and this processing television signals unit is in order to convert the TV RF signals source into restituted signal;
One TV RF signals input is coupled to this processing television signals unit, and in order to couple with this descrambler;
One signal transmission interface includes one first transmit port and one second transmit port, and this first transmit port and this second transmit port are coupled to this display unit; And
One combined type lead-out terminal, this combined type lead-out terminal is coupled to this second transmit port, and in order to couple with this descrambler.
Above-mentioned TV signal tuner wherein also comprises an operational amplifier, is coupled between this second transmit port and this combined type lead-out terminal.
Above-mentioned TV signal tuner; Wherein this second transmit port is in order to receive the video feed signal of this display unit, and this descrambler receives the video feed signal of this display unit through this second transmit port, this operational amplifier and this combined type lead-out terminal and responds the TV RF signals of output descrambling.
Above-mentioned TV signal tuner, wherein this tuner couples this TV RF signals input, and this tuner converts TV RF signals into intermediate-freuqncy signal.
Above-mentioned TV signal tuner, wherein this demodulator couples this tuner, this demodulator demodulation intermediate-freuqncy signal and convert restituted signal into.
Above-mentioned TV signal tuner comprises also that wherein an automatic gain control line is coupled between this signal transmission interface and this processing television signals unit.
According to this novel embodiment, wherein the TV signal tuner more comprise an automatic gain control line be coupled to signal transmission interface and processing television signals unit between.
In sum, the TV signal tuner of the utility model includes signal transmission interface and combined type lead-out terminal.Therefore, the TV signal tuner can directly and display unit couples and couples through combined type lead-out terminal and descrambler.Descrambler receives the video feed signal of display unit and the TV RF signals of descrambling is inputed to the TV signal tuner through the combined type lead-out terminal.
Below in conjunction with accompanying drawing and specific embodiment the utility model is described in detail, but not as the qualification to the utility model.
Description of drawings
Fig. 1 is the system block diagram of TV signal tuner of an embodiment of the utility model.
Wherein, Reference numeral
100 TV signal tuners
110 processing television signals unit
112 tuners
114 demodulators
120 TV RF signals inputs
130 signal transmission interfaces
132 first transmit pories
134 second transmit pories
140 combined type lead-out terminals
160 operational amplifiers
200 descramblers
300 display units
500 sound processing motherboards
530 display unit
A video feed signal
The D restituted signal
The R TV RF signals
S automatic gain control line
Embodiment
Below in conjunction with accompanying drawing the structural principle and the operation principle of the utility model are done concrete description:
Fig. 1 is the system block diagram of an embodiment of the utility model, please with reference to Fig. 1.One TV signal tuner 100 is in order to couple with a display unit 530 and a descrambler 200.Wherein, be coupled in and refer to the direct or indirect means that are electrically connected in this specification.Display unit 530 in the present embodiment comprises a display unit 300 and sound processing motherboard 500.Sound processing motherboard 500 is coupled between display unit 300 and the TV signal tuner 100, carries out decoding processing and is shown on the display unit 300 in order to the TV RF signals that descrambling is crossed.
TV signal tuner 100 includes a processing television signals unit 110, a TV RF signals input 120, a signal transmission interface 130 and a combined type lead-out terminal 140.Wherein processing television signals unit 110 makes that in order to convert the TV RF signals source into restituted signal D sound source signal and the signal of video signal among the sound processing motherboard 500 identification restituted signal D also is output in respectively on loudspeaker and the display unit 300 according to this.
TV RF signals input 120 is coupled to processing television signals unit 110, and in order to couple with descrambler 200.Therefore TV RF signals input 120 can be from the TV RF signals R of descrambler 200 receptions through descrambling.Signal transmission interface 130 couples with display unit 530, and signal transmission interface 130 comprises one first transmit port 132 and one second transmit port 134.Wherein first transmit port 132 is in order to export restituted signal D to the video feed signal A of sound processing motherboard 500, the second transmit pories 134 in order to receiving and displaying device 530.Combined type lead-out terminal 140 is coupled to second transmit port 134, and in order to couple with descrambler 200.
Thus, descrambler 200 can be through second transmit port 134 and the video feed signal A of combined type lead-out terminal 140 receiving and displaying devices 530 and the TV RF signals R of response output descrambling.Wherein, TV signal adjusting device 100 also can comprise an operational amplifier 160 and is coupled between the combined type lead-out terminal 140 and second transmit port 134.
This operational amplifier 160 can be with the power of the video feed signal A of display unit 530 or voltage amplification to provide better video feed signal A intensity.Wherein, in the present embodiment, signal transmission interface 130 is to meet personal computer interface (Personal Computer Interface, coffret PCI).
And in the part embodiment of the utility model; Signal transmission interface 130 can for example be accord with PCI-E, Mini-PCI, Video Graphics Array (Video Graphics Array; VGA), high-definition multimedia interface (High-Definition Multimedia Interface; HDMI), digital video signal interface (Digital Visual Interface, DVI) or universal serial bus (Universal Serial Bus, transmission specification USB).
The video feed signal A of second transmit port 134 that wherein, descrambler 200 can be through TV signal tuner 100, operational amplifier 160 and combined type lead-out terminal 140 receiving and displaying devices 530 also responds the TV RF signals of output descrambling.In certain areas (for example continent) at present, system dealer watches TV programme for fear of not having a user side of legal authorization, can be earlier with TV signal through scrambling process.
Therefore in order to see, must buy descrambler descrambling TV RF signals to the dealer of system by the TV programme of scrambling.And at present the method for scrambled television radiofrequency signal for example have with the picture signal in the TV RF signals, audio signal, row field sync signal and row field blanking signal etc. compress, paraphase or change method such as the deration of signal.Descrambler then need utilize the video feed signal A of display unit output to be modulated into normal TV RF signals output by the TV RF signals of scrambling originally.
Therefore for example in the area, continent, though be TV or installed existing visual tuning device (for example TV card) additional though the computer LCD screen received TV RF signals R also may not TV reception.The TV signal tuner 100 of present embodiment promptly provides one can directly be coupled to the sound processing motherboard 500 of display unit 530 and the coffret of descrambler 200, makes the LCD screen that is used for computer system also be able to watch the TV programme that need through scramble process.And the technology that descrambler 200 utilizes video feed signal descrambling to know for this area person through the method for the TV RF signals of scrambling repeats no more here.
Please continue with reference to figure 1; Wherein the tuner 112 of the processing television signals unit 110 of TV RF device 100 couples the radiofrequency signal output; This tuner 112 converts TV RF signals into intermediate-freuqncy signal, so that this intermediate-freuqncy signal has bigger gain ranging in back-end circuit.
Demodulator 114 couples tuner 112, and this demodulator 114 demodulation intermediate-freuqncy signals and convert restituted signal D into make this restituted signal D in back-end circuit, to be read.Sound processing motherboard 500 can recognize this restituted signal D according to this transmission tone source signal and signal of video signal respectively to for example loudspeaker and screen.
TV signal tuner 100 through with above-mentioned first embodiment is handled, and can the TV RF signals R of descrambling be carried out signal processing through TV signal tuner 100 and sound processing motherboard 500 and be shown on the display unit 300 later.Wherein in the present embodiment, this display unit 300 for example is a computer screen.And in the part embodiment of the utility model, this display unit 300 can for example be the display that mobile computer or flat computer etc. are used for computer system.
In addition, TV signal tuner 100 comprises that also an automatic gain control line S is coupled between signal transmission interface 130 and this processing television signals unit 110.The gain size of this automatic gain control line S may command restituted signal D makes the stable output of restituted signal D.
In sum, the utility model provides a kind of TV signal tuner.This TV signal tuner provides a signal transmission interface to be coupled to display unit and a combined type lead-out terminal is coupled to descrambler, makes that display unit is able to through this TV signal tuner the video feed signal exported in the descrambler.Descrambler receives the TV RF signals that this video feed signal is responded the output descrambling, and this TV signal tuner carries out demodulation process for the sound processing motherboard identification of display unit and be output on the display unit with the TV RF signals of descrambling simultaneously.So the display unit that has coupled this TV signal tuner can be watched by the TV programme of scrambling through descrambler.
Certainly; The utility model also can have other various embodiments; Under the situation that does not deviate from the utility model spirit and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the utility model.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220284155 CN202617293U (en) | 2012-06-14 | 2012-06-14 | Television signal tuning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220284155 CN202617293U (en) | 2012-06-14 | 2012-06-14 | Television signal tuning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202617293U true CN202617293U (en) | 2012-12-19 |
Family
ID=47350959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220284155 Expired - Fee Related CN202617293U (en) | 2012-06-14 | 2012-06-14 | Television signal tuning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202617293U (en) |
-
2012
- 2012-06-14 CN CN 201220284155 patent/CN202617293U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20121219 Termination date: 20170614 |