JP3477905B2 - Video tape recorder - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention enhances the cueing accuracy by controlling the track-to-track time including the tape start end on the basis of a control signal in the absolute address type silence detection track-to-track search of a karaoke video tape. The present invention relates to a video tape recorder characterized by the following.

[0002]

2. Description of the Related Art In recent years, with the spread of karaoke in China, many karaoke videotapes have been put on the market which are inexpensive and can be easily enjoyed by ordinary households. Chinese soft tape is
VI for cueing by using on the facility of the manufacturer
More than half of them do not have SS signals recorded. Even with such a tape, a large number of karaoke-compatible video tape recorders having a function of detecting a silent portion between songs and cueing have been developed and are in widespread use.

A conventional video tape recorder will be described below. FIG. 3 is a block diagram of a conventional video tape recorder. FIG. 4 is a program chart of a conventional video tape recorder.

In FIG. 3, reference numeral 1 is a karaoke search reservation setting section for setting and executing a reserved tune for karaoke search, 2 is an operation microcomputer controlled by the karaoke search reservation setting section 1, and 3 is a reservation for karaoke search. On-screen display circuit for displaying information such as music number, operation and execution status, 4 is a control amplifier for amplifying control signal, 5 is audio for amplifying output signal of linear track audio head, and correcting reproduction characteristics A reproduction equalizer amplifier, 6 is a detection filter for limiting the detection voice band in order to prevent malfunction of silence detection, and 7 is a signal level that amplifies the audio head output at the time of karaoke search, and determines whether there is sound or no sound. If it is determined that there is a gap between songs by comparing with the set silent period based on the control signal, the silent song Detecting pulse generator between silent tracks for generating detecting pulses, 8 karaoke search song counter for counting absolute song type song numbers, 9 resetting song count when tape is taken out or inserted by the data of operation microcomputer, tape Rewind the tape starting end 1
This is a system control servo microcomputer that controls the entire karaoke search system by starting the song counter, managing the song number in the absolute address system, and controlling the entire song search system. 10 is
This is a mechanism controlled by the system control / servo microcomputer 9.

The operation will be described with reference to the program chart of FIG. First, the karaoke search setting unit 1 starts 21 a song number reservation, and selects a karaoke search setting from a reservation screen selection 22. The reserved song input 23 is used to input the absolute address system song number and a plurality of reserved song numbers. The reservation is set at the reservation end setting 24, and the execution key is input at the search start 25. After the tape is input into the cassette, the tape rewinding 26 is executed to the system control / servo microcomputer at least once to the tape start end. The tape start end is detected 27. When the tape start end is reached, the music number of the music counter 8 is set to 1. Start song counter 2
Along with the step 8, the silent interval detection pulse generating circuit 7 starts the silent interval detection operation 29. The system control / servo microcomputer 9 monitors the song number data of the karaoke search song counter to make a comparison determination 30 as to whether the song number is a reserved song number. If it is a reserved song, the mechanism 10 is controlled by the system control / servo microcomputer 9 to reproduce the reserved song from the beginning (silent portion). When the silence detection operation 32 for determining the song end portion is performed at the time of reproduction and the silence detection pulse is reproduced at the song end portion, the song end determination 33 causes the reproduction to be stopped and the next reserved song to be searched. If it is determined 34 that all the reserved songs have ended, the karaoke search ends 35. In the absolute address method, the error is added to the music piece numbers after the music piece malfunctioning in the karaoke search, and it is required that the cueing accuracy is high.

[0006]

However, with the above-mentioned structure, when the karaoke plural songs are reserved by the absolute address method, the following places on the tape are used for the cue detection between the silences of the video tape. However, there is a problem that there is a karaoke video tape that causes a malfunction.

(1) There is a case where it is judged as a space between songs at a place having a silent part between the introduction part of the song (about 10 seconds to 1 minute) and the body part of the song.

(2) A place where the title part of the maker who created the software is recorded at the beginning of the tape, which is in front of the place where the first tune is recorded (about 5 to 40 seconds if the title is included). There is a case to judge that it is between songs.

(3) In a tape in which system noise is mixed only in a specific music interval due to a problem when creating a soft tape, it may not be determined as the music interval.

If there is a silent part in the middle of the song,
In order to prevent malfunction of the karaoke video tape that has judged that it is between songs, it takes time for the user to play the songs one by one and record the VISS signal between the songs. I had a problem.

The present invention solves the above-mentioned problems by managing the inter-track time including the tape start end with reference to a control signal in the absolute address system silence detection inter-track search of karaoke video tapes. The purpose is to improve the cueing accuracy.

[0012]

In order to achieve this object, the present invention detects a silent portion between songs by comparing the level of a linear track audio head output signal with a set value when performing a karaoke search. Absolute address silent detection song interval consisting of a silent pulse detection pulse generation circuit , karaoke search reservation setting means for reserving and executing multiple songs by absolute address method , operation microcomputer and system control servo microcomputer a video tape recorder having a cue function, during karaoke search, silence detection, including a minimum time and maximum time songs optionally set time conversion playback mode based on the control signal, a videotape beginning the interval between pulses is compared with the time conversion in the reproduction mode based on the controls signal, the song number
By providing a timer for detecting the interval between songs ,
The accuracy can be improved .

[0013] In addition, to videotape the VISS signal is not recorded, the setting means for combining the intro search playback and VISS signal recorded by the silence detection between songs cueing
Further, by providing Rukoto, a VISS signal for cueing it can be conveniently recorded between tracks, in the middle of the song due especially which could not be corrected in a cue <br/> between silence detection songs the generated malfunction, it becomes possible to not execute recording only portions malfunction songs VISS signals, Ru can be modified by <br/> record VISS signal.

[0014]

DETAILED DESCRIPTION OF THE INVENTION The present invention by the above configuration, the silence detection between songs beginning of an absolute address system, and spacing of the silence detection pulses including a leading end in terms of time during reproduction based on the control signal, between songs at is compared with minimum time and maximum time set arbitrarily determined, originating in the middle tape beginning and songs karaoke video tape unique by modifying the count of songs
It is possible to reduce the malfunction of raw to head out.

Further, by utilizing the above-mentioned cueing, intro search and VISS are performed on the tape on which the VISS signal is not recorded.
The VISS signal can be easily recorded by combining the means for recording the signal.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a video tape recorder in this embodiment. FIG. 2 is a program chart of the video tape recorder in this embodiment. Figure 1
In the above, the same components as those of the related art are denoted by the same reference numerals and the description thereof will be omitted. 13, a music time in terms of playback mode time on the basis of the control signal, control
Playback signal time conversion based on the video signal
Compare the minimum and maximum time of the song you played, see Figure 2
Then, it is a music interval detecting timer that corrects the music counter only when the condition described later is satisfied. 14 VI on videotape
In karaoke video tape SS signal is not recorded, and the intro search reproduction by utilizing cue between silence detection tracks, the setting unit which is a combination of an intro search and VISS signal recorded for recording a VISS signal between tracks is there.

The operation of the present embodiment configured as described above will be described with reference to FIG. In FIG. 2 (A), after a plurality of songs are reserved by the song number by the absolute address method, the search start 25 is performed by the execution key. Tape rewinding was 26, was carried out of the discrimination 27 is a tape start end, when the tape beginning, the music number of the music counter is set to 1, the music counter Ru Star toss at 28. As a result, the silent interval detection operation 36 is performed. As an example for performing where control signal reference in playback mode time <br/> conversion calculated to between tracks determined, the music minimum time to 2 min, songs for if you set the song maximum time 8 minutes An operation example of the inter-judgment 37 will be described.

(1) Since the title portion (about 5 seconds to 40 seconds) of the software maker at the beginning of the tape in front of the place where the first song is recorded is less than 2 minutes, there is no sound before and after the title portion. Since the music is not counted by the detection pulse and the silent detection pulse at the beginning of the first song, the interval between the songs becomes 2 minutes or more at the beginning of the second song after the first song, so the song count-up 38 operates and the song number becomes 2.

(2) When the accompaniment part (about 10 seconds to 1 minute) of the music piece has a silent portion between the body part of the music piece, for example, if it is in the middle of the second music piece, about one minute in the middle of the music piece. Since the silent part does not exceed 2 minutes between songs, the song does not count up and no malfunction occurs.

(3) When there is a lot of noise between songs and no silence detection pulse is output, in this case, when two songs continue, if one song is about 4 minutes, it is determined that the interval between songs is 8 minutes or more. It is counted up and can be suppressed by one song deviation. Further, in this case, a mark function for recording a silent portion for about 5 seconds is used for correction between unstoppable tunes as compared with the conventional case. As described above, the reserved music is searched to determine the reserved music number 30, and if it is the reserved music, the reproduction 31 is performed from the beginning of the music.

Here, if there is a silent portion detected between 2 minutes and 8 minutes in the middle of a song, a malfunction occurs.
An example of countermeasures by recording the VISS signal in (B) will be described. A means is provided for combining the introsearch reproduction utilizing the silence detection inter-track search of FIG. 2A and the VISS signal recording. When the execution key is pressed to start 40, rewinding 41 is executed to the start end of the video tape. The music is counted by comparing the silent detection operation and the inter-track detection timer, and when it is judged as the second music, as an example of intro search, the beginning of the music is reproduced for 10 seconds. Unless the correction key (means) for erroneous operation correction is pressed in the judgment 44 within 10 seconds, recording 45 of the VISS signal is executed between the songs. After that, the search for the next song operates. If there is a silent part in the position of 3 minutes in the middle of the third song,
The song is counted at that place and is played as song number 4 for 10 seconds. Then, when the correction key is pressed, the VISS signal is not recorded and is counted down to be music number 3, and is counted up at the place where the next silent detection pulse occurs, and intro search reproduction is performed as music number 4. If there is no problem here, after reproducing for 10 seconds, the VISS number as the music number 4 is recorded in the space between the music.

As described above, according to the present embodiment, by providing the inter-track detection timer, it is possible to reduce malfunctions due to the silent detection pulses generated at the video tape start end and the inter-track, and the absolute address system with higher accuracy can be obtained. Silence can be detected and the beginning of the interval between songs can be realized.

Further, in the case where the above-mentioned method also causes a malfunction, it is possible to correct it by not recording the VISS signal at the malfunctioning place by providing a means for combining the intro search by the silent detection inter-track finding and the VISS signal recording.

[0025]

The present invention as described above, according to the present invention, in the absolute address system silence detection between songs cueing, minimum time songs arbitrarily set on the basis of the control signal at time conversion of the reproduction mode
And the maximum time and the interval between silence detection pulses including the beginning of the video tape are compared and judged with the time conversion in the playback mode based on the control signal to correct the song number.
By providing the interval detection timer, the cueing accuracy can be improved.

Further, by using the above-mentioned cueing, intro search and VI are performed on the tape on which the VISS signal is not recorded.
By combining SS signal recording, VIS can be easily performed.
The S signal can be recorded.

[Brief description of drawings]

FIG. 1 is a block diagram of a video tape recorder according to an embodiment of the present invention.

FIG. 2 is a program chart of a video tape recorder according to an embodiment of the present invention.

FIG. 3 is a block diagram of a conventional video tape recorder.

FIG. 4 is a program chart of a conventional video tape recorder.

[Explanation of symbols]

1 Karaoke search reservation setting section 2 Operation microcomputer 3 On-screen display circuit 4 control amplifier 5 Audio playback equalizer amplifier 6 Detection filter 7 Silent song detection pulse generation circuit 8 Karaoke search song counter 9 System control servo microcomputer 10 Mechanism 11 Control head output terminal 12 Linear track audio head output terminal 13 Track detection timer 14 setting section

Claims (2)

(57) [Claims] 1. A silence inter-song detection pulse generation circuit for detecting a silent portion between songs by comparing the level of a linear track (normal) voice head output signal with a set value at the time of executing the beginning of the song, and an absolute address. A video tape recorder having an absolute address method silent detection inter-track heading function composed of a karaoke search reservation setting means for reserving and executing a plurality of songs by a system, and an operation microcomputer and a system control servo microcomputer. , during karaoke search, the control spacing between silence detection pulses including a minimum time and maximum time songs optionally set time conversion re <br/> raw mode on the basis of the control signal, a videotape beginning Video that is equipped with a timer for song interval detection that compares the time conversion in playback mode based on the signal and corrects the song number Tape recorder. To wherein V ISS signal is not recorded video <br/> tape, further <br/> provided setting means for combining the intro search reproduction and VISS signal recorded by silence detection between songs cueing The video tape recorder according to claim 1, wherein