CN1798308A - Method for displaying slow image plane and still image by using video information - Google Patents
Method for displaying slow image plane and still image by using video information Download PDFInfo
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- CN1798308A CN1798308A CN 200410093519 CN200410093519A CN1798308A CN 1798308 A CN1798308 A CN 1798308A CN 200410093519 CN200410093519 CN 200410093519 CN 200410093519 A CN200410093519 A CN 200410093519A CN 1798308 A CN1798308 A CN 1798308A
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Abstract
The method includes: when playing a hi-fidelity video and audio material in a playing speed higher than one time of normal speed, the preset value of hi-fidelity audio optimizing magnetic track is used to compensate to the played material; when playing a video and audio material in a speed slower than the normal speed or playing a still image, the preset value of video optimizing magnetic track is used to compensate to the played material. The invention can remove the noise on the picture by using the video optimal point value and the hi-fi audio optimal point value, when playing a video in a lower or fast speed, or playing a still image.
Description
(1) technical field
The invention relates to displaying video (VIDEO) and high-fidelity (HIFI) audio frequency (AUDIO) information, output best picture and best sound method, especially about for the information of recording with high-fidelity (HIFI) state, show a kind of method of using video information to show slow picture and still frame of optimal audio and optimal images.
(2) background technology
Below, the video of prior art and the player method of HD Audio information are described.
Fig. 1 is existing video packets winding thread (VIDEO Envelope), that is, and and video ENV and audio frequency high-fidelity envelope (HIFI Envelope), that is, and the schematic diagram of the distribution style of audio frequency ENV.
We can find out from figure, the position difference of the optimum of Voice ﹠ Video.
Usually, the magnetic head of video tape recorder can be divided into video head and high-fidelity magnetic head.The error range of above-mentioned video head and audio head is ± 2.
Therefore, on the video optimum, there is the audio frequency optimum.Because it is poor that the error of magnetic head causes producing magnetic track between the audio/video optimum.
Fig. 2 is the flow chart of existing displaying video (VIDEO) and high-fidelity (HIFI) audio frequency (AUDIO) information.
At first, the player method to existing video and HD Audio information roughly illustrates.Existing algorithm is when showing slow picture and still frame, when TRK (Tracking: follow the tracks of) data are monophonic tape (NORMAL tape: in the time of standard reference tape), use the video packets winding thread; When trace information is hi-fi tape, use HD Audio information; When slow picture of display video and still frame, also use above-mentioned high-fidelity information, revisal and output are carried out in tracking.
That is, when trace information is hi-fi tape, utilize the pursuit gain of HD Audio optimum position, carry out ATR (Auto Tracking :), even under the state of slow picture of the demonstration that does not need audio frequency and still frame, also use above-mentioned value from motion tracking.Owing to show slow/still frame, can not find the tram of picture, at show tools--the top and bottom of television set will show noise.
Should there be the optimum of audio pack winding thread in above-mentioned audio pack winding thread optimum and video packets winding thread optimum point-blank in principle on video packets winding thread optimum position.But, because the error of mechanical work causes the two not on same straight line.The RF amount (semaphore) that the video packets winding thread occurs when reading the magnetic track of video tape according to video head shows with DC MAXVCC (5V) form.Therefore, along with video head and the inconsistent degree of magnetic track, the video packets winding thread is also inequality.
Below, the flow chart of existing displaying video of Fig. 2 and HD Audio information is described.
S201, at first, the step of run search trace information.
S202 judges whether to be HD Audio.
S203,204 is when trace information is the tape of HD Audio, from motion tracking (ATR) audio pack winding thread, than the speed of ordinary playing during slow or other state, when for example showing slow picture and still frame, use above-mentioned audio frequency trace information, carry out revisal/broadcast.
S205,206,207, on the other hand, S202 judges, when trace information is standard reference tape (Mono Type: in the time of monophony), from motion tracking (ATR) video packets winding thread, when or other state slower, when for example showing slow picture and still frame than the speed of ordinary playing, use above-mentioned video tracking information, carry out revisal/broadcast.
But, just as explained above, above-mentioned revisal/player method exists when trace information is hi-fi tape, utilize the pursuit gain of HD Audio optimum, carry out ATR (Auto Tracking :), even when slow picture of the demonstration that does not need audio frequency and still frame from motion tracking, also use above-mentioned value, owing to show slow/still frame, can not find the tram of picture, show noise in the lower end and the upper end of show tools-television set.
(3) summary of the invention
The present invention is in order to address the above problem, its objective is to the user and provide a kind of when trace information is hi-fi tape, utilize the pursuit gain of HD Audio optimum position, carry out from motion tracking, when slow picture of the demonstration that does not need audio frequency and still frame, utilize video packets winding thread optimum value, carry out from motion tracking (revisal), lower end and upper end at television set abate the noise, and the use video information of exporting clear picture shows the method for slow picture and still frame.
And another object of the present invention is to show the method for slow picture and still frame for the user provides a kind of use video information of trying to achieve above-mentioned video optimum (Max.) and audio frequency optimum (Max.).
The object of the present invention is achieved like this, use video information of the present invention shows that the method for slow picture and still frame is exactly the method for displaying video and audio-frequency information, feature is: for the information of recording with high-fidelity (HIFI) state, when playing the above-mentioned information of recording with the speed more than 1 times, utilize HD Audio the best magnetic track value of detections/storage to carry out revisal; When showing the above-mentioned information of recording with the slow state of 1 times of less than or inactive state, utilize video the best magnetic track value of detections/storage to carry out revisal.
Effect of the present invention:
Therefore, the application of the invention uses video information to show when the method for slow picture and still frame shows slow picture and still frame, can remove noise on picture, obtains picture clearly, reaches the quality that improves product, strengthens the effect of competitiveness of product.
And, by using best point value of video and the best point value of HD Audio respectively, in fact enlarged the scope of machine error angle, reach the effect of the product disqualification rate that reduces manufacture process.
For further specifying above-mentioned purpose of the present invention, design feature and effect, the present invention is described in detail below with reference to accompanying drawing.
(4) description of drawings
Fig. 1 is the schematic diagram of the distribution style of existing video packets winding thread (VIDEO Envelope) and high-fidelity envelope (HIFI Envelope).
Fig. 2 is the flow chart of existing displaying video (VIDEO) and high-fidelity (HIFI) audio frequency (AUDIO) information.
Fig. 3 be from each starting point of motion tracking audio/video optimum distribution map (A, B, in the time of C), the schematic diagram that each search (Searching) of above-mentioned starting point correspondence is interval.
When Fig. 4 is the slow picture of display video and still frame, the sequential chart of hold part.
Fig. 5 is according to the present invention, tries to achieve an embodiment of the method for audio/video optimum position.
Fig. 6 is according to the present invention, tries to achieve another embodiment of the method for audio/video optimum position.
Fig. 7 is the flow chart of displaying video of the present invention (VIDEO) and high-fidelity (HIFI) audio frequency (AUDIO) information approach.
(5) embodiment
Below with reference to accompanying drawings, use video information to show the method for slow picture and still frame to the present invention
Embodiment is elaborated.
Fig. 3 be from each starting point of motion tracking audio/video optimum distribution map (A, B, in the time of C), the schematic diagram that each search (Searching) of above-mentioned starting point correspondence is interval.
As shown in the figure, X-axis representative be search (Searching) distance for the maximum (optimum) of trying to achieve audio/video, the Y-axis representative be the maximum (V) of above-mentioned audio/video.
And, " a " representative be error-machine error between audio head and the video head.
When being standard,, try to achieve the optimum position of audio/video at region of search retrieval audio pack winding thread with above-mentioned each video packets winding thread.
When Fig. 4 is the slow picture of display video and still frame, the sequential chart of hold part.
In the drawings, V.HSW (VIDEO Head Switch) represents the video head switch, and CTL (Linear Control Signal) represents the straight line control signal, and RVS ' H ' (Reverse High) representative is oppositely high.
And what TX (Tracking Fix) represented is track side's place value, and what BRK (Brake) represented is brake.
In above-mentioned Fig. 4, the A/B/C of TX representative graph 3 point, TRK are represented the corresponding region of search of above-mentioned A/B/C point.
Above-mentioned region of search TRK can enlarge, but can not surpass 1 frame.
And, Slow TRK (slowly follow the tracks of) be video slow/during hold part, in order to obtain the best picture of video, the distance of action from the straight line control signal to the capstan engine brake.
And BRK refers in order to set the best picture of video, the phase place of control.
According to Fig. 3 and Fig. 4, read audio/video optimum position, utilize this information, follow the tracks of, when trace information is a HD Audio, when showing slow picture and still frame, have the video optimum, with best point value output.
Fig. 5 is according to the present invention, tries to achieve an embodiment of the method for audio/video optimum position.
S501, at first, the step of run search trace information.
S502, whether judgement exists the best point value of HD Audio on the track of the video optimum position of Fig. 3.
S503, S504 are when above-mentioned judged result is to exist on the track of video optimum under the situation of HD Audio optimum, when playing the above-mentioned information of recording, for example, when playing with the speed more than 1 times, utilize the best magnetic track value of HD Audio, carry out revisal; When showing the above-mentioned information of recording with the slow state of 1 times of less than or inactive state, utilize the best magnetic track value of video of detections/storage to carry out revisal and also export.
S505 on the other hand, when the judged result of above-mentioned steps S502 is when not having the HD Audio optimum on the track of video optimum, enlarges the video search scope, carries out audio frequency from motion tracking.
Fig. 6 is according to the present invention, tries to achieve another embodiment of the method for audio/video optimum position.
S601, the step of run search trace information.
602, whether judgement exists the best point value of video on the track of the high-fidelity optimum position of Fig. 3.
S603,604 is when above-mentioned judged result is to exist on the track of HD Audio optimum under the situation of video optimum, during the information recorded when ordinary playing is above-mentioned, for example, when playing, utilize the best magnetic track value of HD Audio, carry out revisal with the speed more than 1 times; When showing the above-mentioned information of recording with the slow state of 1 times of less than or inactive state, utilize the best magnetic track value of video to carry out revisal and output.
S605 on the other hand, when the judged result of above-mentioned steps S602 is when having the video optimum on the track of HD Audio optimum, to enlarge above-mentioned audio search scope, carries out from motion tracking.
Fig. 7 is the flow chart of the method for displaying video of the present invention (VIDEO) and high-fidelity (HIFI) audio frequency (AUDIO) information.
S701, the retrieval trace information.
S702 tries to achieve the best point value of the audio/video that shows among at least more than one Fig. 3 by the method for Fig. 5 and Fig. 6.
S703 judges whether trace information is HD Audio.
S704,705,706 when trace information is the tape of HD Audio, during the above-mentioned information of recording of ordinary playing, for example, when playing with the speed more than 1 times, utilizes the best magnetic track value of HD Audio, carries out revisal; When showing the above-mentioned information of recording with the slow state of 1 times of less than or inactive state, utilize the best magnetic track value of video to carry out revisal and output, show best picture.
S707,708,709,710, on the other hand, when trace information is monophonic tape (standard reference tape), the video packets winding thread carries out from motion tracking, when showing the above-mentioned information of recording with the slow state of 1 times of less than or inactive state, utilize the best magnetic track value of video to carry out revisal, and output, best picture shown.
Characteristics of the present invention are: for the information of recording with high-fidelity (HIFI) state, when playing the above-mentioned information of recording with the speed more than 1 times, utilize HD Audio the best magnetic track value of detections/storage to carry out revisal; When being lower than normal speed and inactive state and showing the above-mentioned information of recording, utilize video the best magnetic track value of detections/storage to carry out revisal, demonstration optimal audio and video.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claims of the present invention variation, the modification of the above embodiment.
Claims (4)
1, a kind of method of using video information to show slow picture and still frame is exactly the method for displaying video and audio-frequency information, it is characterized in that comprising:
For the information of recording with the high-fidelity state, when playing the above-mentioned information of recording with the speed more than 1 times, utilize HD Audio the best magnetic track value of detections/storage to carry out revisal;
When the slow or inactive state with 1 times of less than shows the above-mentioned information of recording, utilize video the best magnetic track value of detections/storage to carry out revisal.
2, use video information as claimed in claim 1 shows the method for slow picture and still frame, it is characterized in that:
The method of trying to achieve of described HD Audio information optimum comprises following step:
The step of operation retrieval trace information;
Whether judgement exists the step of above-mentioned HD Audio optimum on the track of video optimum;
When above-mentioned judged result is to have above-mentioned HD Audio optimum on the track of video optimum, when playing the above-mentioned information of recording with the speed more than 1 times, utilize the best magnetic track value of HD Audio to carry out revisal, when showing with the slow state of 1 times of less than or inactive state, the step of utilizing the best magnetic track value of video to carry out revisal.
3, use video information as claimed in claim 1 shows the method for slow picture and still frame, it is characterized in that:
The method of trying to achieve of the optimum of described HD Audio information comprises following step:
The step of operation retrieval trace information;
Whether judgement exists the step of above-mentioned video optimum on the track of HD Audio optimum;
If above-mentioned judged result is to have above-mentioned video optimum on the track of HD Audio optimum, when playing the above-mentioned information of recording with the speed more than 1 times, utilize the best magnetic track value of HD Audio to carry out revisal, when showing with the slow state of 1 times of less than or inactive state, the step of utilizing the best magnetic track value of video to carry out revisal.
4, show the method for slow picture and still frame as claim 2 or 3 described use video informations, it is characterized in that:
When on the track of described HD Audio/video optimum, having video/HD Audio optimum, enlarge video/HD Audio hunting zone, carry out from motion tracking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410093519 CN1798308A (en) | 2004-12-24 | 2004-12-24 | Method for displaying slow image plane and still image by using video information |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410093519 CN1798308A (en) | 2004-12-24 | 2004-12-24 | Method for displaying slow image plane and still image by using video information |
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| CN1798308A true CN1798308A (en) | 2006-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200410093519 Pending CN1798308A (en) | 2004-12-24 | 2004-12-24 | Method for displaying slow image plane and still image by using video information |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104660948A (en) * | 2015-03-09 | 2015-05-27 | 深圳市欧珀通信软件有限公司 | Video recording method and device |
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2004
- 2004-12-24 CN CN 200410093519 patent/CN1798308A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104660948A (en) * | 2015-03-09 | 2015-05-27 | 深圳市欧珀通信软件有限公司 | Video recording method and device |
| CN104660948B (en) * | 2015-03-09 | 2018-01-16 | 广东欧珀移动通信有限公司 | A kind of video recording method and device |
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