CN201374765Y - Weak signal detection system of multi-media advertisement player - Google Patents
Weak signal detection system of multi-media advertisement player Download PDFInfo
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- CN201374765Y CN201374765Y CN200820231866U CN200820231866U CN201374765Y CN 201374765 Y CN201374765 Y CN 201374765Y CN 200820231866 U CN200820231866 U CN 200820231866U CN 200820231866 U CN200820231866 U CN 200820231866U CN 201374765 Y CN201374765 Y CN 201374765Y
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Abstract
The utility model discloses a weak signal detection system of a multi-media advertisement player, which comprises a hard disk for storing video information, a card reader for reading the video information, a TV signal receiving unit for receiving the video information, a digital TV main control unit for processing the video information sent by the hard disk, the card reader and the TV signal receiving unit, and a display unit for displaying the video information processed by the digital TV main control unit, and is characterized in that the digital TV main control unit is also used for detecting the strength of the signal input by a tuner; when the digital TV program signal sent back by the TV signal receiving unit is weaker than a set value, the digital TV main control unit automatically reads the video information in the hard disk or the card reader, and displays same through the display unit. The system can effectively avoid the problems that no program is output or program mosaics are too many to effect watching, has simple structure, is convenient to produce, and is very suitable for the wide application to the multi-media advertisement players.
Description
Technical field
The utility model relates to a kind of detection system, relate in particular to that a kind of when mosaic or demonstration occurring and not having signal, system can automatically switch and play the multimedia advertising machine Testing of Feeble Signals system of the content in hard disk or the card reader when the digital television program signal is more weak.
Background technology
At present, along with the development of science and technology and all trades and professions, advertisement is ubiquitous, and TV programme also can in all case can be watched.As building television advertising machine, elevator television advertising machine or the like, but because these places relatively disperse, the program receiving environment also varies in different localities, when the digital television program signal that certain time receives more weak, when program mosaic or demonstration occur and does not have signal, advertisement machine has just lost effect originally, light then influence the time that advertisement is play, heavy then influence advertising company's image, if (per as shown in Figure 21 all needs 1 staff all to need this moment staff people manually to switch to the content of playing in hard disk and the card reader, observe the digital signal program when weak, when program mosaic or demonstration occur and do not have signal, be manually switched to the content of playing in hard disk or the card reader), it is cumbersome to operate like this, and the staff can not monitor this phenomenon whether occurs always, and poor effect is bound to.
Summary of the invention
The utility model is at the proposition of above problem, and develop a kind of when the digital television program signal is more weak, the multimedia advertising machine Testing of Feeble Signals system of automatic switchover play content.The technological means that the utility model adopts is as follows:
A kind of multimedia advertising machine Testing of Feeble Signals system comprises hard disk, is used for store video information; Card reader is used to read video information; The TV signal receiving element is used for receiver, video information; The Digital Television main control unit is used for the video information that hard disk, card reader and TV signal receiving element place bring is handled; Display unit is used for Digital Television main control unit processed video information is shown;
It is characterized in that:
Also comprise tuner, be used for the input intermediate-freuqncy signal of TV signal receiving element is carried out the A/D sampling;
Described TV signal receiving element is connected with tuner, and described Digital Television main control unit is connected with tuner; Above-mentioned Digital Television main control unit is connected reading video information wherein with hard disk or card reader, and shows by the display unit that is connected with it.
Described Digital Television main control unit and tuner adopt the IIC communication modes to communicate.
Because it is conspicuous that the multimedia advertising machine Testing of Feeble Signals system that has adopted technique scheme, the utility model to provide compares its advantage with prior art, its concrete advantage is:
1, on the basis of existing matured product national standard digital television machine, hard disc player, functions of card reader advertisement machine, only by revising software, it is more weak just can to realize working as the digital television program signal, when program mosaic or demonstration occurred and do not have signal, system can automatically switch to the content of playing in hard disk or the card reader.
2,, can select whether to open this function according to the application scenario.
3, can the expanding system function.As long as the Digital Television master chip still has resource (I/O mouth) available, just can expand other system.
4, portable good, as develop and need to add this function in the new product, only need simple the adjustment, make a small amount of software alteration, just can on other products, realize said function.
To sum up this system can effectively prevent from not have program output or program mosaic too much the influence phenomenon of watching take place, in addition, this system simple in structure, be convenient to produce, be very suitable for being extensive use of at the multimedia advertising machine.
Description of drawings
The utility model comprises three width of cloth accompanying drawings:
Fig. 1 is a structured flowchart of the present utility model;
Fig. 2 is not for using multimedia advertising machine working method schematic diagram of the present utility model;
Fig. 3 is for adopting the utility model multimedia advertising machine working method schematic diagram.
Embodiment
The multimedia advertising machine Testing of Feeble Signals system that provides of the utility model as shown in Figure 1, this multimedia advertising machine is integrated in the advertisement machine by national standard digital television machine, hard disc player, card reader and constitutes; Hard disk is used for store video information; Card reader is used to read video information; The TV signal receiving element is used for receiver, video information; The Digital Television main control unit is used for the video information that hard disk, card reader and TV signal receiving element place bring is handled; Display unit is used for Digital Television main control unit processed video information is shown.Wherein hard disk is a hard disc player, and Digital Television main control unit and display unit are two formants in the national standard digital television machine in the present embodiment, and the national standard digital television machine can be watched GB DMBTH digital signal.
Usually radio frequency rf signal locks through tuner, the output of formation medium-frequency IF, tuner is controlled by the I2c bus, finish high-frequency tuning and export intermediate-freuqncy signal, channel demodulator is according to the intermediate-freuqncy signal amplitude, regulate the intermediate-freuqncy signal amplitude of tuner output by the AGC signal, it is stabilized within certain scope, the intermediate-freuqncy signal output amplitude is less usually, need to send into demodulator then, after demodulator is received intermediate-freuqncy signal through intermediate frequency amplifier, it is carried out analog-to-digital conversion, carry out demodulation then step by step.Channel demodulator can directly carry out the A/D sampling to the input intermediate-freuqncy signal, the gain of AGC Signal Regulation intermediate-freuqncy signal is provided, the Digital Television main control unit is realized the various controlled function of operating system, detect the intensity of TUNER input signal simultaneously, when the digital television program signal more weak, when program mosaic or demonstration occur and does not have signal, the content in hard disk or the card reader is play in the automatic switchover of Digital Television main control unit control system, prevent from not have program output or program mosaic too much to influence the phenomenon of watching, wherein the main control unit of national standard digital television machine and tuner TUNER adopt the IIC communication modes.
According to the application scenario, advertisement machine is specified the content of watching in national standard digital television program or broadcast hard disk or the card reader, when the digital television program signal more weak, when program mosaic or demonstration occur and does not have signal, system can automatically switch and play content in hard disk or the card reader, prevents from not have the too much influence phenomenon of watching of program output or program mosaic.
Use the multimedia advertising machine of native system as shown in Figure 3, all machines only need 1 staff, digital signal program is set when weak, switch to the content of playing in hard disk or the card reader, later on more weak when the digital television program signal, when program mosaic or demonstration occurred and do not have signal, system can automatically switch and play content in hard disk or the card reader, prevent from not have program output or program mosaic too much to influence the phenomenon of watching, save manpower greatly.
The above; it only is the preferable embodiment of the utility model; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to replacement or change according to the technical solution of the utility model and inventive concept thereof, all should be encompassed within the protection range of the present utility model.
Claims (2)
1, a kind of multimedia advertising machine Testing of Feeble Signals system comprises:
Hard disk is used for store video information;
Card reader is used to read video information;
The TV signal receiving element is used for receiver, video information;
The Digital Television main control unit is used for the video information that hard disk, card reader and TV signal receiving element place bring is handled;
Display unit is used for Digital Television main control unit processed video information is shown;
It is characterized in that:
Also comprise tuner, be used for the input intermediate-freuqncy signal of TV signal receiving element is carried out the A/D sampling;
Described TV signal receiving element is connected with tuner, and described Digital Television main control unit is connected with tuner; Above-mentioned Digital Television main control unit is connected reading video information wherein with hard disk or card reader, and shows by the display unit that is connected with it.
2, multimedia advertising machine Testing of Feeble Signals according to claim 1 system is characterized in that described Digital Television main control unit and tuner adopt the IIC communication modes to communicate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820231866U CN201374765Y (en) | 2008-12-17 | 2008-12-17 | Weak signal detection system of multi-media advertisement player |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820231866U CN201374765Y (en) | 2008-12-17 | 2008-12-17 | Weak signal detection system of multi-media advertisement player |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201374765Y true CN201374765Y (en) | 2009-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200820231866U Expired - Fee Related CN201374765Y (en) | 2008-12-17 | 2008-12-17 | Weak signal detection system of multi-media advertisement player |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201374765Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103220570A (en) * | 2013-05-14 | 2013-07-24 | 无锡北斗星通信息科技有限公司 | Terminal for receiving and playing digital television signal |
-
2008
- 2008-12-17 CN CN200820231866U patent/CN201374765Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103220570A (en) * | 2013-05-14 | 2013-07-24 | 无锡北斗星通信息科技有限公司 | Terminal for receiving and playing digital television signal |
| CN103220570B (en) * | 2013-05-14 | 2016-01-06 | 海安常大技术转移中心有限公司 | The terminal that receiving digital television signal carrying out is play |
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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: 20091230 Termination date: 20171217 |