CN1141556A - Television antenna self-diagnosis apparatus and method therefor - Google Patents
Television antenna self-diagnosis apparatus and method therefor Download PDFInfo
- Publication number
- CN1141556A CN1141556A CN95120885A CN95120885A CN1141556A CN 1141556 A CN1141556 A CN 1141556A CN 95120885 A CN95120885 A CN 95120885A CN 95120885 A CN95120885 A CN 95120885A CN 1141556 A CN1141556 A CN 1141556A
- Authority
- CN
- China
- Prior art keywords
- aft
- channel
- value
- signal
- aft value
- 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.)
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/004—Diagnosis, testing or measuring for television systems or their details for digital television systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/04—Diagnosis, testing or measuring for television systems or their details for receivers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/64—Constructional details of receivers, e.g. cabinets or dust covers
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
The invention provides a television antenna self-diagnosis apparatus, comprising tunner, picture intermediate frequency processor, video processor and automatica fine tunner. The apparatus detects the abnormality of TV antenna system,such as faulty of each cable contactor offsetting of antenna bearing by comparing the reference AFT value of the corresponding channel with channel AFT value and informs the users by video display.
Description
The present invention relates to television set and TV set aerial.Specifically, the present invention has developed and has a kind ofly checked that with automatic fine tuning (AFT) value the abnormal TV set aerial of antenna work is from examining and determine apparatus and method.
TV set aerial occurs contacting with stube cable between the television set such as antenna bad sometimes, or the problem that departs from and so on of antenna direction.
In this case, the television image quality can be quite bad.Yet even antenna has had problem, the user can not find usually.
Therefore, an object of the present invention is to provide a kind of television antenna from the calibrating method, this method utilizes the problem that the AFT value takes place TV set aerial to carry out notifying TV user then from calibrating.
Another object of the present invention provides a kind of generation and is used for the method for TV set aerial from the benchmark AFT value of calibrating.
The 3rd purpose of the present invention is to propose a kind of TV set aerial of carrying out from examining and determine the device of method.
In order to reach above-mentioned first purpose, whether undesired provided by the present invention being used for comprise the following steps: when having channel to require the signal input from the calibrating method from the antenna of calibrating carry out of TV set aerial, relatively the benchmark AFT value and the channel AFT value of a channel; Determine whether channel AFT value has departed from the threshold value scope, or whether have broadcast singal at this channel; When determining that in determining step channel AFT value has departed from the threshold value scope, or when this channel does not have broadcast singal, show that antenna is undesired; When determining that in determining step channel AFT value does not depart from the threshold value scope, and when there is broadcast singal in this frequently, determine whether monitor is in screen display state; When monitor is not in screen display state, finish these steps; And when monitor is in screen display state, finish screen display state.
In order to reach second purpose of the present invention, provided by the present invention be used for producing whether undesired carry out of TV set aerial comprised the following steps: when channel requires the signal input from the method for the benchmark AFT value of calibrating, to a channel execution AFT; And when the AFT execution in step was finished, storage AFT value perhaps was stored in and watches the TV programme phase to use the resulting AFT value of automatic fine tuning.
In order to reach the 3rd purpose of the present invention, proposed by the invention whether undesired carrying out comprises from examining and determine device from the TV set aerial of calibrating to TV set aerial: one is used for selecting a needed signal, the output tuner to the signals selected full tv-if signal that carries out demodulation and obtain according to first control signal from each broadcast singal that send the broadcasting station; One is used for amplifying that full tv-if signal, output separate the signal that has amplified and the picture intelligence that obtains and the visual intermediate frequency processor of audio signal; One is used for exporting by handling the image signal processor that resulting first rgb signal mixes the hybrid RGB signal that produces with second rgb signal with to picture intelligence to the driving of driving display; And one be used for according to channel requirement signal export first control signal, will be from the picture intelligence of corresponding channel detected current AFT value and benchmark AFT value compares, the automatic fine tuning device of abnormal second rgb signal of output marker antenna when current AFT value departs from the threshold value scope.
Above these purposes of the present invention and advantage will be clearer by below in conjunction with accompanying drawing a preferred embodiment of the present invention being elaborated.In these accompanying drawings:
Fig. 1 examines and determine the flow chart of method certainly for illustration TV set aerial proposed by the invention;
Fig. 2 is used for TV set aerial is carried out the flow chart of the method for the benchmark AFT of calibrating certainly for illustration generation proposed by the invention; And
Fig. 3 examines and determine the block diagram of device certainly for TV set aerial proposed by the invention.
As shown in Figure 3, TV set aerial proposed by the invention comprises antenna 60, tuner 62, visual intermediate frequency processor 64, image signal processor 66, cathode ray tube (CRT) driver 74, CRT76 and automatic fine tuning device 78 from examining and determine device.Wherein, automatic fine tuning device 78 comprises input part 80, AFF value detector 82, comparing section 84, controller 86 and screen display portion 88.
At first, the method that produces benchmark AFT value is described, situation is as follows.
The output signal of RGB blender 72 is delivered to the CRT driver 74 that drives display unit (as CRT76).
The AFC value detector 82 of automatic fine tuning device 78 detects the AFT value from the picture intelligence of visual intermediate frequency processor 64 outputs, detected AFT value is exported to controller 86.
For example, the picture intelligence that is received at AFC value detector 82 is in 0 to 5 volt scope, and AFT value detector 82 is under the situation of 4 A-D converters, and the AFT value is subjected to 24 and promptly deposits controller 86 in after 64 layered quantization.
After receiving the AFT value of AFT value detector 82 outputs, whether controller 86 check AFT finish (step 34).If AFT does not also finish, then carry out AFT (step 36) again.That is to say that when AFT did not also finish, controller 36 increased or reduce channel frequency, the channel frequency that tuner 62 outputs by control signal C1 increase or reduced.Tuner 62 carries out AFT (step 36) according to incoming frequency again.After step 36, controller 86 receives the AFT value of AFT value detector 82 outputs, checks AFT whether to finish (step 38) again.In the present invention, when AFT finished, the AFT value that is detected deposited controller 86 in, as the benchmark AFT value of corresponding channel.
Describe TV set aerial proposed by the invention method in detail below in conjunction with Fig. 1 from calibrating.
When channel requires the signal input (step 10), controller 86 receives the current AFT value of user-selected channel, and just channel AFT value and have the benchmark AFT value of the interior corresponding channel of controller 86 is exported to comparing section 84 with these two AFT values then.(step 12), all whether the directive of controller 86 definite channel AFT values and the broadcast singal of corresponding channel (step 14) in the scope of threshold value for these two AFT values that comparing section 84 is relatively received.
Wherein, the benchmark AFT value of the scope of threshold value and corresponding channel is corresponding, is between " height " thresholding and " low " thresholding.When not existing broadcast singal or channel AFT value to depart from the scope of threshold value, device proposed by the invention will be notified the user, antenna undesired (step 16).
In step 16, controller 86 control OSD portions 88 make from OSD portion 88 to abnormal second rgb signal of RGB blender 72 output marker antennas.RGB blender 72 is delivered to CRT driver 74 after first and second rgb signals that received are mixed.
Yet when within the scope of broadcast singal at thresholding, controller 86 just checks monitor whether to be in screen display state (step 18), finishes screen display state (step 20) then.
As mentioned above, when in antenna, abnormality occurring, for example: the cable contact of TV set aerial has fault, or antenna direction departs from etc., TV set aerial proposed by the invention just can show to the user from detect some abnormal conditions that takes place in TV set aerial from examining and determine apparatus and method.
Claims (5)
1. one kind is used for from examining and determine a television antenna whether abnormal antenna is from the calibrating method, it is characterized in that described method comprises the following steps:
When a channel requires the signal input, compare a benchmark AFT value and channel AFT value of a channel;
Determine whether whether described channel AFT value departs from the threshold value scope, perhaps exist a broadcast singal at described channel;
When determining that in described determining step described channel AFT value has departed from described threshold value scope, perhaps when there is not broadcast singal in described channel, shows that described antenna is undesired;
When determining that in described determining step described channel AFT value does not depart from described threshold value scope, and when described channel has broadcast singal, determine whether a monitor is in a screen display state;
When described monitor is not in described screen display state, finish described step; And
When described monitor is in described screen display state, finish described screen display state.
2. one kind is used for producing one from examining and determine the whether method of abnormal benchmark AFT value of a TV set aerial, it is characterized in that described method comprises the following steps:
When a channel requires the signal input, a channel is carried out AFT; And
When the AFT execution in step is finished, store an AFT value, perhaps be stored in and watch resulting AFT value during the TV programme.
3. one kind according to the method that is used for producing a benchmark AFT value that claim 2 proposed, and it is characterized in that wherein said AFT execution in step comprises the following steps:
When described channel requires the signal input, to channel frequency of a tuner output;
By repeating described AFT execution in step, obtain final AFT value until the AFT that finishes described tuner; And
Described AFT value is stored as a channel AFT value.
One kind be used for from examine and determine an antenna whether abnormal TV set aerial it is characterized in that from examining and determine device described device comprises:
A tuner, its effect are to select a needed signal according to one first control signal from each broadcast singal that a broadcasting station sends, to the described signals selected demodulation of carrying out, with a full tv-if signal output that therefore produces;
A visual intermediate frequency processor, its effect are to amplify described full tv-if signal, are separated into a picture intelligence and an audio signal output with described through amplifying signal;
An image signal processor, its effect are the hybrid RGB signals that mixes to produce by first rgb signal that one second rgb signal and a treated described picture intelligence are obtained of driver output that drives a display to; And
An automatic fine tuning device, its effect is to export described first control signal according to a channel requirement signal, with one from the described picture intelligence of a corresponding channel detected current AFT value and a benchmark AFT value compare abnormal described second rgb signal of the output described antenna of indication when described current AFT value has departed from a threshold value scope.
One kind according to TV set aerial that claim 4 proposed from examining and determine device, it is characterized in that wherein said automatic fine tuning device comprises:
An AFT value detector, its effect are to receive described picture intelligence and produce described current AFT value and described benchmark AFT value;
A comparing section, its effect are that described current AFT value and described benchmark AFT value are compared;
An on-screen display circuit, its effect are to export described second rgb signal according to one second control signal; And
A controller, its effect are to export described first control signal according to described channel requirement signal, receive described current AFT value and described benchmark AFT value is exported to described comparing section, and export described second control signal according to the output signal of described comparing section.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR21571/95 | 1995-07-21 | ||
| KR1019950021571A KR0141144B1 (en) | 1995-07-21 | 1995-07-21 | An apparatus for self diagnosis of tv antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1141556A true CN1141556A (en) | 1997-01-29 |
Family
ID=19421203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95120885A Pending CN1141556A (en) | 1995-07-21 | 1995-12-20 | Television antenna self-diagnosis apparatus and method therefor |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR0141144B1 (en) |
| CN (1) | CN1141556A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102200572A (en) * | 2010-03-24 | 2011-09-28 | 鸿富锦精密工业（深圳）有限公司 | Instrument self-detecting system and instrument self-detecting method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8606209B2 (en) | 2009-06-24 | 2013-12-10 | Intel Corporation | Apparatus and methods for efficient implementation of tuners |
-
1995
- 1995-07-21 KR KR1019950021571A patent/KR0141144B1/en not_active IP Right Cessation
- 1995-12-20 CN CN95120885A patent/CN1141556A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102200572A (en) * | 2010-03-24 | 2011-09-28 | 鸿富锦精密工业（深圳）有限公司 | Instrument self-detecting system and instrument self-detecting method |
| CN102200572B (en) * | 2010-03-24 | 2014-04-23 | 鸿富锦精密工业（深圳）有限公司 | Instrument self-detecting system and instrument self-detecting method |
Also Published As
| Publication number | Publication date |
|---|---|
| KR970009318A (en) | 1997-02-24 |
| KR0141144B1 (en) | 1998-06-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |