JPH08153350A - Switch signal generation device, reproducing device and tv receiver - Google Patents

Abstract

PURPOSE: To automatically switch from a fast-feeding state to a regular reproducing state while reproducing when a chance scene comes on in sport relay broadcasting. CONSTITUTION: A band limit part 3 transmits only a component of a frequency band of an audience's cheer from a sound signal reproduced and demodulated from a magnetic tape, and a level detection part 5 detects the level of the sound output. A mean level calculation part 7 calculates the mean value of the output level of the level detection part 5. A level comparison part 9 outputs a signal when the output of the level detection part 5 is larger than the mean value of the mean level calculation part 7, and a switch signal generation part 11 generates a switch signal based on the signal to supply it to a reproducing speed variable circuit 13. The reproducing speed variable circuit 13 controls a reproducing system 15, and switches from the fast-feeding state to the regular reproducing state automatically while reproducing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention shortens the viewing time and watches only important portions (such as chance scenes and score scenes) when a program such as sports broadcasting is recorded on a magnetic recording / reproducing apparatus. Or a request to switch the image of the parent-child screen or the source of the audio output in an important scene when listening to a sports broadcast on the child screen of a parent-child screen television receiver, for example. The present invention relates to a switching signal generating device that satisfies the above conditions, a reproducing device including the switching signal generating device, and a television receiver.

[0002]

2. Description of the Related Art In a conventional magnetic recording generator, the reproduction speed is manually switched. Also, in a television receiver having a parent-child screen, the parent-child screens are replaced and the audio output supply destination is manually selected.

[0003]

For example, when it is desired to listen to a recorded program such as a sports broadcast in a shorter time, the program is fast-forwarded or rewound while being reproduced, and manually reproduced at an appropriate place. Had returned. Therefore, for example, there is a risk of missing important scenes such as chance scenes and score scenes.

Also, for example, when listening to a sports broadcast on the child screen, if the parent and child screen is not replaced in the above-mentioned important scene, the child screen must be watched as it is, and the voice is also earphones. Or you can only listen with headphones. Therefore, the present invention, in the state of fast-forwarding or rewinding while playing the playback device,
It is an object of the present invention to provide a switching signal generation device that generates a switching signal that enables automatic switching to a normal reproduction state when an important scene is reached.

Further, according to the present invention, when the image of the child screen becomes an important scene in the television receiver, the images of the parent and child screens are automatically replaced, or the earphones or the output destination of the audio output to the headphone and the speaker. It is an object of the present invention to provide a switching signal generation device that generates a switching signal that allows automatic switching of the switching signals.

A further object of the present invention is to provide a reproducing apparatus, a television receiver and a recording / reproducing apparatus equipped with the switching signal generating device.

[0007]

[Means for Solving the Problems]

(First switching signal generation device) In the switching signal generation device for generating a switching signal for switching the reproduction device in the special reproduction state in which the reproduction is performed at a speed faster than usual to the normal reproduction state, the audio signal reproduced from the recording medium. Is inputted, the level detecting means for detecting the level of the audio signal, the average level calculating means for calculating the average value of the levels detected by the level detecting means, the output of the average level calculating means, and the level detecting means. Level comparison means for performing level comparison of the outputs of the above and the comparison result of this level comparison means are input, and the output of the level detection means is larger than the output of the average level calculation means by a predetermined value N (N> 0) or more. And a switching signal generating means for generating a switching signal when indicated.

(Second Switching Signal Generating Device) In a switching signal generating device for generating a switching signal for switching a parent screen image and a child screen image of a television receiver, an audio signal corresponding to the child screen image signal is generated. Input level detection means for detecting the audio signal level,
An average level calculating means for calculating the average value of the levels detected by the level detecting means, a level comparing means for comparing the output of the average level calculating means with the output of the level detecting means, and a comparison of the level comparing means. And a switching signal generating means for generating a switching signal when the result is input and the output of the level detecting means is larger than the output of the average level calculating means by a predetermined value N (N> 0) or more.

(Third Switching Signal Generating Device) In the switching signal generating device for generating the switching signal for switching the supply of the audio output to the speaker of the television receiver and the earphone terminal or the headphone terminal, the earphone terminal or the An audio signal output to the headphone terminal is input, level detection means for detecting the level of this audio signal, average level calculation means for calculating an average value of the levels detected by this level detection means, and this average level The level comparison means for performing level comparison between the output of the calculation means and the output of the level detection means and the comparison result of this level comparison means are input, and the output of the level detection means is a predetermined value N from the output of the average level calculation means. (N>
0) or more and a switching signal generating means for generating a switching signal when it indicates that it is greater than 0).

(Fourth Switching Signal Generating Device) In the switching signal generating device for generating a switching signal for automatically switching the recording / reproducing device from the special reproduction state in which the recording / reproducing device is reproduced at a speed faster than usual to the normal reproducing state, The audio signal to be recorded in is input to the level detecting means for detecting the level of the audio signal, the average level calculating means for calculating the average value of the levels detected by the level detecting means, and the output of the average level calculating means. The level comparison means for comparing the levels of the outputs of the level detection means and the comparison result of the level comparison means are input, and the output of the level detection means is a predetermined value N (N
> 0) or more, and a switching signal generating means for generating a switching signal when it indicates that it is greater than 0.

[0011]

In the present invention, the level of the audio signal is low when there is no excitement in, for example, a program of sports broadcasting, but the cheering of the audience and the live condition of the announcer are active in the opportunity scene and the scoring scene. Take advantage of the higher points.

The level detecting means detects the level of the input audio signal. The average level calculating means calculates an average value of the levels detected by the level detecting means. The level comparison means compares the output of the level detection means with the output of the average level calculation means, and the output of the level detection means is a predetermined value N from the average value calculated by the average level calculation means.
A signal is output when (N> 0) or greater. The switching signal generation means receives the output from the level comparison means,
Generate a switching signal. This switching signal is utilized as follows.

First, in the reproducing apparatus, when the switching signal is generated, the special reproduction state in which reproduction is performed at a speed faster than usual is switched to the normal reproduction state.

Secondly, in the television receiver, when the switching signal is generated, the parent screen image and the child screen image are automatically switched.

Thirdly, in the television receiver, when the switching signal is generated, the supply of the audio output to the speaker and the earphone terminal or the headphone terminal is automatically switched.

Fourthly, in the recording / reproducing apparatus, the switching signal is recorded at the same time as the recording, and the normal reproduction is performed when the recording portion of the switching signal comes from the special reproduction state in which the reproduction is performed at a speed faster than usual. Switch to state automatically.

[0017]

FIG. 1 shows a first embodiment of the switching signal generator of the present invention. This embodiment is an example in which the present invention is applied to a magnetic recording / reproducing apparatus, and it is assumed that a program such as a sports broadcast has already been recorded. The magnetic recording / reproducing apparatus is in a fast-forwarding or rewinding state while reproducing. At this time, the voice is also reproduced from the magnetic tape, further AM demodulated or FM demodulated and supplied to the input terminal 1.

The band limiting unit 3 passes only the frequency band of the cheer of the audience or the voice of the announcer, for example (100HZ to 8KHZ), from the voice signal from the input terminal 1.
The level detection unit 5 detects the level of the audio output of the band limiting unit 3.

The average level calculator 7 calculates the average value of the levels detected by the level detector 5. Level comparison unit 9
Compares the output of the level detection unit 5 with the output of the average level calculation unit 7, and the output of the level detection unit 5 shows the average level calculation unit 7
A signal is output when it is larger than the average value calculated in step 3 by more than 3 decibels. The switching signal generation unit 11 receives the signal from the level comparison unit 9 and generates, for example, a pulsed switching signal.

The reproducing speed varying circuit 13 receives the switching signal and controls the reproducing system 15 to automatically switch to the normal reproducing state. The reproduction speed variable circuit 13 is used not only for inputting the switching signal but also for normal manual operation such as PL
An instruction signal such as AY or REC may be input.

As described above, it is possible to shorten the listening time of sloppy scenes, and to automatically reproduce normal scenes when a chance scene, a score scene, or the like is reached.

When the switching signal arrives, the reproduction speed variable circuit 13 controls the reproduction system 15 to rewind for a few seconds and then switches to the normal reproduction state. This allows you to watch the chance and score scenes from the beginning.

FIG. 2 shows a second embodiment of the switching signal generator of the present invention. The present embodiment is an example in which the present invention is applied to a television receiver for parent-child screens, and it is assumed that a program such as sports broadcast is displayed on the child screen. Therefore, the input terminal 1 is supplied with an audio input corresponding to the small screen image.

The band limiting unit 3, the level detecting unit 5, the average level calculating unit 7, the level comparing unit 9, and the switching signal generating unit 11 in the next stage perform the same operations as in FIG.

The pulse-shaped switching signal generated by the switching signal generation unit 11 controls the switching operation of the screen switching circuit 17, and outputs the first and second video inputs to the parent screen video output and the child screen video. Swap the output.

As a result, for example, when a chance scene or a score scene is reached, the sub-picture image is replaced with the main picture, so that those scenes can be fully enjoyed.

FIG. 3 shows a third embodiment of the switching signal generator of the present invention. This embodiment is an example in which the present invention is applied to, for example, a television receiver such as a parent-child screen, and it is assumed that sound such as sports relay is output to an earphone terminal or a headphone terminal. So input terminal 1
The audio signal supplied to the earphone terminal or the headphone terminal is input to.

The band limiting unit 3, the level detecting unit 5, the average level calculating unit 7, the level comparing unit 9, and the switching signal generating unit 11 in the next stage perform the same operations as in FIG.

The pulse-shaped switching signal generated by the switching signal generation unit 11 controls the switching operation of the audio output switching circuit 19 and outputs the first and second audio inputs to the speaker and the earphone terminal or the headphone terminal. Replace the supply.

Thus, for example, when a chance scene or a score scene is reached, the sports relay can be heard through the speaker, and a powerful voice can be heard.

FIG. 4 shows a fourth embodiment of the switching signal generator of the present invention. This embodiment is an example in which the present invention is applied to a magnetic recording / reproducing apparatus as in the case of FIG. 1, and a program such as sports broadcast is already recorded. The magnetic recording / reproducing apparatus is in the fast-forwarding or rewinding state while reproducing as in FIG. At this time, the sound is also reproduced from the magnetic tape,
Further, it is subjected to AM demodulation or FM demodulation and input to the input terminal 1. The same components as those in FIG. 1 are designated by the same reference numerals, and their operations are the same, so the description of those operations will be omitted and only the added portions will be described.

The timer circuit 21, when supplied with a switching signal in the form of a pulse from the switching signal generator 11, starts a measuring operation and outputs a signal when a predetermined time is measured. Then, the timer circuit 21 outputs the signal, or outputs the signal and returns to the initial value after a predetermined time has elapsed. The reset circuit 23 receives a signal from the timer circuit 21 and supplies, for example, a pulsed reset signal to the reproduction speed varying circuit 13.

The reproduction speed variable circuit 13 directly receives, for example, a pulsed switching signal from the switching signal generator 11 to control the reproduction system 15 to switch to the normal reproduction state.
Upon receiving the input of the reset signal, the reproduction system 15 is controlled, and this time the normal reproduction state is automatically returned to the fast-forward or rewind state while performing the original reproduction.

As a result, the normal reproduction is performed only in the scenes in which excitement such as chance scenes and score scenes occur, and the listening time in other sloppy scenes can be shortened.

FIG. 5 shows a fifth embodiment of the switching signal generator of the present invention. This embodiment is an example in which the present invention is applied to a parent-child screen television receiver as in FIG. 2, and it is assumed that sound such as sports relay is output to an earphone terminal or a headphone terminal. So input terminal 1
The audio signal supplied to the earphone terminal or the headphone terminal is input to.

Since the respective components such as the timer circuit 21 and the reset circuit 23 perform the same operations as in FIG. 4, the same reference numerals are given and the description thereof will be omitted.

The pulse-shaped switching signal generated by the switching signal generator 11 is also supplied to the screen switching circuit 17, which controls the switching operation of the screen switching circuit 17 to input the first and second video signals. Switch between the parent screen video output and the child screen video output. For example, a pulse-shaped reset signal generated by the reset circuit 23 controls the switching operation of the screen switching circuit 17, and this time the first and second video inputs are the parent screen video output and the child screen video output. Put back the original one.

As a result, only the exciting scenes such as chance scenes and score scenes can be viewed on the main screen.

FIG. 6 shows a sixth embodiment of the switching signal generator of the present invention. This embodiment is an example in which the present invention is applied to a television receiver such as a parent-child screen as in the case of FIG. 3, and it is assumed that sound such as sports relay is output to an earphone terminal or a headphone terminal. Therefore, the audio signal supplied to the earphone terminal or the headphone terminal is input to the input terminal 1.

Since the respective components such as the timer circuit 21 and the reset circuit 23 perform the same operations as in FIG. 4, the same reference numerals are given and the description thereof will be omitted.

The pulse-shaped switching signal generated by the switching signal generator 11 is also supplied to the audio output switching circuit 19, controls the switching operation of the audio output switching circuit 19, and controls the first and second switching operations. Swap the audio input to the speaker and earphone or headphone jack. For example, a pulse-shaped reset signal generated by the reset circuit 23 controls the switching operation of the audio output switching circuit 19, and this time supplies the first and second audio inputs to the speaker and the earphone terminal or the headphone terminal. Put back.

As a result, the sports broadcast can be heard through the speaker only when the chance scene, the score scene, or the like rises.

FIG. 7 shows a seventh embodiment of the switching signal generator of the present invention. This embodiment is an example in which the present invention is applied to a magnetic recording / reproducing apparatus as in the case of FIG. 4, and a program such as a sports broadcast is already recorded. As in the case of FIG. 4, it is in the state of fast-forwarding or rewinding while reproducing. At this time,
Audio is also reproduced from magnetic tape, and AM demodulation or F
M is demodulated and input to the input terminal 1. The same components as those in FIG. 4 are designated by the same reference numerals and their operations are the same, so the description of those operations will be omitted and only the added functions will be described.

The reset circuit 23 monitors the output of the level comparing section 9, and when the measurement signal is supplied from the timer circuit 21, the output of the level detecting section 5 is changed to the average level calculating section 7
When the output is larger than the output of, for example, 3 dB or more, the generation of the reset signal is stopped and the control signal is supplied to the timer circuit 21. The timer circuit 21 receives the control signal and returns the measurement operation to the initial value, and repeats the measurement operation from the beginning.

As a result, normal reproduction is carried out as long as the scenes that are exciting, such as chance scenes and score scenes, continue.

FIG. 8 shows an eighth embodiment of the switching signal generator of the present invention. This embodiment is an example in which the present invention is applied to a parent-child screen television receiver as in FIG. 5, and it is assumed that sound such as sports relay is output to an earphone terminal or a headphone terminal.

Since the respective components such as the timer circuit 21 and the reset circuit 23 perform the same operations as in FIG. 7, the same reference numerals are given and the description of their operations is omitted.

As described with reference to FIG. 7, when the output of the level detector 5 is larger than the output of the average level calculator 7 by, for example, 3 decibels or more when the measurement signal is supplied from the timer circuit 21, the reset signal Stop the occurrence of.

For this reason, as long as the scenes of interest, such as chance scenes and score scenes, continue, the sports broadcast can be viewed on the parent screen.

FIG. 9 shows a ninth embodiment of the switching signal generator of the present invention. This embodiment is an example in which the present invention is applied to a television receiver such as a parent-child screen as in the case of FIG. 6, and it is assumed that sound such as sports relay is output to an earphone terminal or a headphone terminal. Therefore, the audio signal supplied to the earphone terminal or the headphone terminal is input to the input terminal 1.

Since the respective components such as the timer circuit 21 and the reset circuit 23 perform the same operations as those in FIG. 7, the same reference numerals are given and the description of their operations is omitted.

As described with reference to FIG. 7, when the output of the level detector 5 is larger than the output of the average level calculator 7 by, for example, 3 decibels or more when the measurement signal is supplied from the timer circuit 21, the reset signal Stop the occurrence of.

For this reason, as long as the scenes of interest, such as chance scenes and score scenes, continue, the sports relay can be heard through the speaker.

In the above-mentioned first, fourth and seventh embodiments, the example of the magnetic recording / reproducing apparatus is shown, but a reproducing only apparatus without a recording function may be used. Further, the recording medium for supplying the audio signal to the input terminal 1 is not limited to the magnetic tape, but may be an optical disk, a semiconductor memory or the like. In this case, the device provided with the switching signal generating device of the present invention is a reproducing device for reproducing an image or sound from the optical disk player semiconductor memory or the like.

FIG. 10 shows a tenth embodiment of the switching signal generator of the present invention. The present embodiment is an example in which the present invention is applied to recording a program such as a sports broadcast by a magnetic recording / reproducing apparatus. Specifically, in a sports broadcast or the like, a switching signal is generated and recorded on, for example, an audio track of a magnetic tape when an exciting scene such as a chance scene or a score scene is reached. Then, when fast-forwarding or rewinding during reproduction, when the switching signal is recorded, it is possible to switch to normal reproduction.

The audio signal recorded on the magnetic tape is input to the input terminal 1. The input audio signal is a signal before being AM-modulated or FM-modulated. The circuit configuration for generating the switching signal from the input audio signal is the same as that of FIG. 1, and the description thereof will be omitted by giving the same reference numerals.

The difference from FIG. 1 is that the switching signal is not limited to a pulsed signal, but is a signal in which the state of once rising continues. Then, this switching signal is supplied to the recording system 31 and recorded on the magnetic tape.

As described above, the sloppy scene during the subsequent reproduction can be fast-forwarded or rewound during the reproduction to shorten the listening time, and when a scene such as a chance scene or a score scene comes up, the scene is recorded first. It is possible to switch to normal reproduction using the switching signal.

FIG. 11 shows an eleventh embodiment of the switching signal generator of the present invention. This embodiment is an improved example of the embodiment of FIG.

The switching signal generator 11 includes a level comparator 9
In response to the signal from, the signal once rises and its state continues.

When the switching signal is supplied from the switching signal generator 11, the timer circuit 21 starts the measuring operation, and outputs the signal after measuring for a certain period of time. And the timer circuit
21 returns to the initial value after outputting a signal or after outputting a signal for a certain period of time. The reset circuit 23 receives a signal from the timer circuit 21 and supplies, for example, a pulsed reset signal to the switching signal generation unit 11. The switching signal generation unit 11 receives the reset signal and stops its operation. This causes the signal supplied to the recording system to fall.

Thus, for example, a switching signal is generated and supplied to the recording system 31 for a certain period of time determined by the timer circuit 21 from the time when the chance scene or the score scene is raised.

FIG. 12 shows a twelfth embodiment of the switching signal generator of the present invention. This embodiment is an improved example of the embodiment shown in FIG.

The reset circuit 23 monitors the output of the level comparing section 9, and when the measurement signal is supplied from the timer circuit 21, the output of the level detecting section 5 changes to the average level calculating section 7
When the output is larger than the output of, for example, 3 dB or more, the generation of the reset signal is stopped and the control signal is supplied to the timer circuit 21. Upon receiving this control signal, the timer circuit 21 returns the measurement operation to the initial value and repeats the measurement operation from the beginning.

As a result, a switching signal is generated and supplied to the recording system 31 while, for example, a chance scene or a score scene is in full swing.

In the tenth, eleventh and twelfth embodiments described above,
The magnetic recording / reproducing apparatus records and reproduces the image, the sound and the switching signal. However, the recording / reproducing apparatus is not limited to this and may be a recording / reproducing apparatus for recording and reproducing on a recording medium such as an optical disk or a semiconductor memory.

[0067]

According to the present invention, it is possible to automatically switch the state of fast-forward or rewind while reproducing in a magnetic recording / reproducing apparatus to a normal reproduction state when an important scene of a program such as sports relay is reached. Becomes Further, when a certain time has elapsed from the normal reproduction state, the original reproduction is performed and the fast-forward or rewind state is automatically returned. Furthermore, as long as the important scene continues, the original reproduction is not performed to return to the fast forward or rewind state.

According to the present invention, in a parent-child screen television receiver, a program such as a sports relay image displayed on the child screen is automatically replaced with the parent screen when an important scene of a program such as a sports relay signal comes to an important scene. It becomes possible. Also, after a certain period of time has passed since the program such as sports broadcast was switched to the parent screen, this time it automatically returns to the original child screen. Furthermore, as long as the important scene continues, it will not return to the original inset screen.

According to the present invention, when it is applied to a television receiver such as a parent-child screen, for example, when an important scene of a program such as sports broadcasting comes, a sound output to an earphone terminal or a headphone terminal is output to a speaker. It is possible to automatically switch to the output to. Also, after a certain period of time has passed since the program such as sports broadcast was replaced with the output to the speaker, the output is returned to the original earphone terminal or headphone terminal. Furthermore, as long as the important scene continues, the output does not return to the earphone terminal or the headphone terminal.

According to the present invention, at the time of recording by the magnetic recording / reproducing apparatus, a switching signal is generated and recorded when an important scene such as sports relay is reached. By recording this switching signal, it becomes possible to automatically switch from the fast-forward or rewind state to the normal playback state during the next playback. Also, the generation of the switching signal is stopped after a certain period of time. Further, as long as the important scene continues, the generation of the switching signal does not stop.

[Brief description of drawings]

FIG. 1 is a diagram showing a first embodiment of a switching signal generation device of the present invention.

FIG. 2 is a diagram showing a second embodiment of the switching signal generation device of the present invention.

FIG. 3 is a diagram showing a third embodiment of the switching signal generation device of the present invention.

FIG. 4 is a diagram showing a fourth embodiment of the switching signal generation device of the present invention.

FIG. 5 is a diagram showing a fifth embodiment of the switching signal generation device of the present invention.

FIG. 6 is a diagram showing a sixth embodiment of the switching signal generation device of the present invention.

FIG. 7 is a diagram showing a seventh embodiment of the switching signal generation device of the present invention.

FIG. 8 is a diagram showing an eighth embodiment of the switching signal generation device of the present invention.

FIG. 9 is a diagram showing a ninth embodiment of the switching signal generation device of the present invention.

FIG. 10 is a diagram showing a tenth embodiment of the switching signal generation device of the present invention.

FIG. 11 is a diagram showing an improved example of the tenth embodiment of the switching signal generation device of the present invention.

FIG. 12 is a diagram showing an improved example of the embodiment of FIG. 11 of the switching signal generation device of the present invention.

[Explanation of symbols]

3 ... Band limiting section, 5 ... Level detecting section, 7 ... Average level calculating section, 9 ... Level comparing section, 11 ... Switching signal generating section, 13
... Playback speed variable circuit, 15 ... Playback system, 17 ... Screen switching circuit, 19 ... Audio output switching circuit, 21 ... Timer circuit, 23 ...
Reset circuit, 31 ... Recording system.

Claims (17)

[Claims] 1. A switching signal generation device for generating a switching signal for switching a reproduction device in a special reproduction state which reproduces at a speed faster than usual to a normal reproduction state, in which an audio signal reproduced from a recording medium is inputted, Level detecting means for detecting the level of the audio signal, average level calculating means for calculating the average value of the levels detected by the level detecting means, output of the average level calculating means, and level of the output of the level detecting means. The level comparison means for comparison and the comparison result of this level comparison means are input, and switching is performed when the output of the level detection means is larger than the output of the average level calculation means by a predetermined value N (N> 0) or more. A switching signal generation device comprising: a switching signal generation means for generating a signal. 2. The switching signal generation device according to claim 1, wherein the level detection means limits the input audio signal to a predetermined frequency band and detects the level of the restricted audio signal. . 3. A switching signal generation device for generating a switching signal for switching a parent screen image and a child screen image of a television receiver, wherein an audio signal corresponding to the child screen image is input, and a level of the audio signal. Detecting means, an average level calculating means for calculating the average value of the levels detected by the level detecting means, and a level comparing means for comparing the output of the average level calculating means with the output of the level detecting means. And a switching signal for generating a switching signal when the comparison result of the level comparing means is inputted and the output of the level detecting means is larger than the output of the average level calculating means by a predetermined value N (N> 0) or more. A switching signal generation device comprising: a generation unit. 4. The switching signal generation device according to claim 3, wherein the level detection means limits the input audio signal to a predetermined frequency band and detects the level of the restricted audio signal. . 5. A switching signal generating device for generating a switching signal for switching the supply of audio output to a speaker of a television receiver and an earphone terminal or a headphone terminal, the signal being output to the earphone terminal or the headphone terminal. Level detection means for detecting the level of the audio signal, an average level calculation means for calculating an average value of the levels detected by the level detection means, an output of the average level calculation means and the level The level comparison means for comparing the levels of the outputs of the detection means and the comparison result of the level comparison means are input, and the output of the level detection means is larger than the output of the average level calculation means by a predetermined value N (N> 0) or more. And a switching signal generating means for generating a switching signal when indicating that That switching signal generating device. 6. The switching signal generation device according to claim 5, wherein the level detection means limits the input voice signal to a predetermined frequency band and detects the level of the limited voice signal. . 7. The switching signal generated by the switching signal generation device according to claim 1 or 2 is input, and the switching signal causes the special reproduction state to transition to a state before reproduction for a predetermined time, and thereafter a normal reproduction state. Playback device that switches to. 8. A timer signal for inputting a switching signal from the switching signal generating means and measuring a fixed time after the switching signal is input, and a reset for generating a reset signal according to the measurement result of the timer means. And a switching signal generator according to claim 1 or 2, further comprising: means for returning from the normal reproduction state to the special reproduction state by the reset signal. 9. A timer signal for inputting a switching signal from the switching signal generating means and measuring a fixed time after the switching signal is input, and a reset for generating a reset signal according to the measurement result of the timer means. 5. A television receiver, comprising: the switching signal generation device according to claim 3 or 4, further comprising: means for returning to a state before the parent screen image and the child screen image are replaced by the reset signal. 10. A timer signal for inputting a switching signal from the switching signal generating means and measuring a fixed time after the switching signal is input, and a reset for generating a reset signal according to the measurement result of the timer means. 7. The switching signal generating device according to claim 5 or 6, further comprising means for returning to a state before switching the audio output to the speaker and the earphone terminal or the headphone terminal by the reset signal. Television receiver. 11. The reset means monitors the comparison result of the level comparing means, and even if the output of the timer means is input, the output of the level detecting means is more than the output of the average level calculating means at that time. 9. The reproducing apparatus according to claim 8, wherein when the predetermined value N (N> 0) or more is large, the generation of the reset signal is stopped and the measurement operation of the timer means is returned to the initial value. 12. The reset means monitors the comparison result of the level comparing means, and even if the output of the timer means is input, the output of the level detecting means is greater than the output of the average level calculating means at that time. 10. The television receiver according to claim 9, wherein the generation of the reset signal is stopped and the measurement operation of the timer means is returned to the initial value when the value is larger than the predetermined value N (N> 0). 13. The reset means monitors the comparison result of the level comparison means, and even if the output of the timer means is input, the output of the level detection means is more than the output of the average level calculation means at that time. 11. The television receiver according to claim 10, wherein the generation of the reset signal is stopped and the measurement operation of the timer means is returned to the initial value when the value is larger than the predetermined value N (N> 0). 14. A switching signal generating device for generating a switching signal for switching from a special reproduction state in which a recording / reproducing device is reproduced at a speed faster than usual to a normal reproduction state, in which an audio signal to be recorded on a recording medium is input. Level detecting means for detecting the level of the audio signal, average level calculating means for calculating an average value of the levels detected by the level detecting means, and a level comparison between the output of the average level calculating means and the output of the level detecting means. And the comparison result of this level comparison means is input, and when the output of the level detection means is larger than the output of the average level calculation means by a predetermined value N (N> 0) or more, a switching signal And a switching signal generating means for generating a switching signal generating device. 15. The switching signal generation device according to claim 14, wherein the level detection means limits the input voice signal to a predetermined frequency band and detects the level of the limited voice signal. . 16. A timer signal for inputting a switching signal from the switching signal generating means and measuring a fixed time after the switching signal is input, and a reset for generating a reset signal according to a measurement result of the timer means. 16. The switching signal generation device according to claim 14, further comprising: means for stopping the operation of the switching signal generation means by the reset signal. 17. The reset means monitors the comparison result of the level comparison means, and even if the output of the timer means is input, the output of the level detection means is greater than the output of the average level calculation means at that time. 17. The switching signal generation device according to claim 16, wherein when the value is larger than a predetermined value N (N> 0), generation of the reset signal is stopped and the measurement operation of the timer means is returned to an initial value.