KR0137078B1 - VSR's Digest Playback Voice Control - Google Patents

Abstract

The present invention relates to a digest audio playback apparatus for searching for a desired screen by speech in a V-Cal. In particular, it is possible to adjust an image match and a length of the speech played back from a digest head, thereby minimizing the inconsistency between the video and the audio and reproducing a unit playback time. The purpose of the present invention is to solve the problem of interruption of voice during still operation.

The object of the present invention is to install a digest head for reproducing the voice according to the playback search mode in addition to the existing audio head at the front end of the audio head by a tape traveling distance of 6 seconds based on the reproduction 1x speed, and increase the number of memory to two. This can be achieved by controlling the voice reproduced from the digest playhead according to the search mode.

Description

VSR's Digest Playback Voice Control

1 is a block diagram of a conventional voice regeneration device

2 is a block diagram for explaining the first FIG.

3 is a block diagram of the digest reproduction speech control device of the present invention VRC

4 is a block diagram for explaining the third

5 is a flowchart for explaining FIG.

Brief description of the main parts of the drawing

1: supply reel 2: full width cleaning head

3: head drum 4: video playback head

5: take-up reel 6: voice playback head

7: digest head 10: voice playback control unit

50: first storage unit 60: second storage unit

The present invention relates to a digest voice playback apparatus for searching a desired screen by voice in a V-Cal. In particular, it is possible to adjust an image match and a length of a speech reproduced from a digest head, thereby minimizing inconsistency between the video and the audio and reproducing a unit playback time. The purpose of the present invention is to solve the problem of interruption of voice during still operation.

1 is a main configuration diagram of a V-AL audio reproducing apparatus currently in use, and erases the recording sound of the supply reel 1 for supplying the mounted tape and the tape supplied from the supply reel 1. A video recording and reproducing head mounted at an angle of 180 degrees to the upper cylinder of the head drum 3 for reproducing the image of the tape supplied through the full width erasing head 2 and the full width erasing head 2). 4) and an audio playback head portion 6 for sound reproduction of a tape wound on the take-up reel 5 past the head drum 3, and the audio reproduction head portion 6 includes an image and an audio. The head of the lower end of the tape for the synchronous control of the voice and the sound control head for sound muting at the time of dubbing are integrated.

2 is a block diagram of an audio processing apparatus for explaining a process of being reproduced and outputted from the audio reproducing apparatus, wherein the analog / digital converting unit converts the reproduced and input analog audio signal into a digital signal ( 30) and a voice reproduction control unit for digitally converting the digital audio signal stored in the storage unit 40 under the control of the microcomputer 20 under the control of the microcomputer 20 according to the search mode. 10) and a digital / analog converter 50 for converting a digital voice signal stored in the storage unit 40 into an analog signal and outputting the analog signal under the control of the voice reproduction control unit 10.

In the above configuration, the digest function separates the video and the audio so that the sound is properly output from the fast screen, the slow screen as well as the still picture, so that the user can comfortably find the inconvenience of finding the desired scene with the sound.

The conventional digest voice output device configured as described above is capable of reproducing voice in modes (i.e., still, 1/2, 2, and fast cues) except for reverse fast search (Rev.). Through the head 6, the analog audio signal read in the unit of 6x at the 1x speed and 5 seconds at the time of Rev is input, and digitally converted by the analog / digital converter 30, and then the storage unit 40 ), Which is again controlled by the voice reproduction control unit 10 and analog-converted by the digital / analog converter 50 and outputted as a 1x voice signal.

However, this conventional technique is such that video and audio coincide at the beginning of the period of digest playback in double speed playback and cue playback modes, and in still and half speed modes, In contrast, video and audio are synchronized at the end of the digest playback cycle.

Therefore, the time difference between the video and audio becomes deeper toward the opposite side, so that the video and audio output are different by 6 seconds at the time of play, 3 seconds at the 1/2 speed, 6 seconds at the 2 times playback, and 24 seconds in the cue mode. There was a problem that could be.

In addition, in still mode, as the voice is repeated every 6 seconds, the part of the part that you want to listen to repeatedly is cut off. Especially, when the Super Caption is applied, the contents of the subtitle cannot be repeatedly repeated in 6 seconds. There was a problem.

Therefore, in the present invention, the above problem is solved by using a digest reproduction sound adjusting device configured by adding a digest dedicated head and a second memory.

The object of the present invention is a digest voice head located before the head drum with respect to the distance and the tape driving direction in a predetermined distance from the voice playback head,

Digital conversion means for converting each of the analog audio signals output from the voice reproduction head and the digest voice head into a digital voice signal;

A first storage unit for storing the digital audio signal of the voice reproduction head converted by the digital conversion means;

A second storage unit for storing the digital voice signal of the digest voice head converted by the digital change means;

Voice output control means for controlling the output of the digital audio signal by controlling the reading and reading timing of the digital audio signal stored in the first and second storage units in accordance with the current playback speed in the digest audio output mode;

It can be achieved by including an analog conversion means for converting the digital audio signal of the first and second storage units output by the voice output control means into an analog signal and outputting the analog signal.

3 is a configuration diagram of the digest reproduction sound adjusting device according to the present invention, wherein the supply reel 1 for supplying the mounted tape and the full width for erasing the recording sound of the tape supplied from the supply reel 1 are provided. An image recording and reproducing head 4 mounted at an angle of 180 degrees to the upper cylinder of the head drum 3 for reproducing the image of the tape fed through the erasing head 2 and the full width erasing 2 head; And a voice reproducing head 6 for voice reproducing or voice reproducing during the dubbing of the tape wound on the take-up reel 5 past the head drum, and for reproducing the voice during the stop replay, the fast forward search, and the fast reverse search. It consists of a digest voice head (7) for.

Explaining the relationship between the audio playback head and the digest dedicated voice head, the tape length X 6 seconds movable at constant driving speed (1x speed) is 33.35mm / sec X 6 sec = 200.1 between the audio playback head and the digest audio head. mm (20.1 cm).

The digest voice head (7) is located at a distance of 20.1 cm from the voice play head (6). In the general VCR, the position between the voice play head (6) and the video head (right head of 4) on the drum (3) is shown. The separation distance is about 8cm, the diameter of the drum is 6cm, and the tape is wound 180 degrees on the drum. The length of the tape wound on the drum is about 9cm. Therefore, the distance between the digest audio heads 7 is about 2 cm from the left side of the drum.

4 is a block diagram of a voice processing apparatus for explaining a process of being reproduced and outputted from the digest audio playback apparatus. The microcomputer 20 outputs a control signal according to a user's selection mode. And a voice reproduction control unit 10 for controlling the operation of the control target system in response to the control signal of the microcomputer 20, and the analog input reproduced from the digest audio head 7 when the reproduction mode of the microcomputer is a special reproduction. An analog / digital converter 30 for digitally converting a signal, a first storage unit 60 for storing a digest reproduced audio signal digitally converted from the analog / digital converter, and data of the first storage unit for a predetermined time. A second storage unit 70 for reading and storing after a delay, and a digital / analog conversion for reading and converting the data stored in the second storage unit for analog conversion. It consists of an affected part 50.

The operation of the present invention digest voice control device configured as described above will be described with reference to FIGS. 3 to 5.

The operation of the present invention according to each search mode will be described.

In still picture mode (Still mode), the Digest audio head 7 is located in front of the video head (drum) and the audio head is located behind the video head. The die head may be read and stored in the second storage unit 70.

Therefore, the audio corresponding to the current image may be read and output from the audio signal of the first storage unit 60 that has already been read and stored from the audio head, and the audio corresponding to the image after the current still image may be output from the digest audio head 7. Since the first storage unit 70 reads the second storage unit 70, the second storage unit 70 may be read and output.

However, when the first storage unit 60 and the second storage unit 70 can store the audio signal for 6 seconds, respectively, the first storage unit 60 and the second storage unit 70 read out the middle of the audio signals stored in the first storage unit (which takes 3 seconds) and then store the second signal. By reading the first to the middle of the audio signals stored in the negative part, the voice output is possible for 3 seconds with the still picture before and after the still picture (still).

Therefore, it is possible to reproduce the voice more correlated with the still picture.

In the 1x speed playback, the audio also needs to be output normally, so the playback output of the existing voice head is output immediately.

However, since the normal still mode is selected in the 1x speed state, the audio output of the digest voice head is continuously updated and stored in the first storage unit 60 in preparation for the selection of the seattle mode at 1x speed.

If Still mode is selected, it operates as described above.

In the case of 1/2 times, if the reproduction is performed for 6 seconds at 1/2 times, the actual amount of 3 seconds is reproduced, and the audio signal is stored for 3 seconds in the first and second storage units, respectively.

Therefore, in order to correlate the audio signal stored for three seconds with the playback video at low speed, the read timing of the first storage unit 60 is delayed by 1.5 seconds and the output is completed for 3 seconds (total time: 4.5 seconds). When reading out the storage unit 70 and outputting for 1.5 seconds, the total required time becomes 6 seconds, so that the video playback time and the required time match, while minimizing the uncorrelation between the voice and the video by the low speed playback.

At double speed, 12 seconds of video is played back in 6 seconds, and the audio signal of the video signal being reproduced is stored in a state of 6 seconds missing in the first storage unit 60, and then 12 seconds of video signal to be played back. The corresponding voice signal is stored in the second storage unit 70 in a state of 6 seconds missing.

As the audio signals of the first and second storage units stored as described above are continuously reproduced, the audio signals closer to the video signals reproduced at double speed can be reproduced and output.

In CUE mode (when playing more than 2 times speed)

Since the playback speed is fast, the voice signal output control is not effective. Therefore, the voice is also output immediately.

In REV (reverse playback)

As it is reverse playback, it is output only to the voice head.

As described above, the present invention allows the user to determine the unit playback time to 6 seconds and 12 seconds, and to reduce the time difference between the video and the audio in half compared to the conventional case. Not only can you hear the voices before and after, you can also hear the voice for 12 seconds.

Claims (1)

A digest voice head located before the head drum based on a distance and a tape driving direction sound at a predetermined distance from the sound play head, Digital conversion means for converting each of the analog audio signals output from the voice reproduction head and the digest voice head into a digital voice signal; A first storage unit for storing the digital audio signal of the voice reproduction head converted by the digital change means; A second storage unit for storing the digital audio signal of the digest voice head converted by the digital conversion means; Voice output control means for controlling the output of the digital audio signal by controlling the reading and the read dimming of the digital audio signal stored in the first and second storage units in accordance with the current playback speed in the digest audio output mode; And a digital conversion unit for converting and outputting a digital audio signal of the first and second storage units output by the voice output control unit to an analog signal.