JP3138168B2 - Magnetic recording / reproducing device with speech speed conversion function - Google Patents

Abstract

PURPOSE: To reproduce audio signal within a set speech speed range even when the speech speed range is not reset at a reproducing time by recording a VASS signal corresponding to the set speech speed range from a video recording start spot to a video recording end spot even when the speech speed is set on the way of video recording a program. CONSTITUTION: When the speech speed range is set by operating a setting key 30 of a remote controller 14 on the way of video recording the program, a microcomputer 12 records the VASS signal added with a VASS code corresponding to the speech speed range on a magnetic tape 22. When the video recording of the program ends, the microcomputer 12 rewinds the magnetic tape 22 to the video recording start spot, and it fast-forwards the magnetic tape 22 from the video recording start spot to the spot setting the speech speed. Then, during this time, the VASS signal added with the VASS code corresponding to the speech speed range is continued to be recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic recording / reproducing apparatus, and more particularly to, for example, setting a speech speed when recording voice so that a speech speed setting signal recorded together with an audio signal on a magnetic tape is reproduced when reproducing the magnetic tape. Detect and output a voice whose pitch (pitch) does not change at the speech speed.
The present invention relates to a magnetic recording / reproducing device with a speech speed conversion function.

[0002]

2. Description of the Related Art Conventional video tape recorder (VTR)
A VTR with a speech speed conversion function using a speech speed conversion device disclosed in Japanese Patent Application No. 6-253929 filed on Oct. 19, 1994 is widely known. In this VTR, when an operator sets a speech speed range when recording a program, a VISS (Video Index Search System) to which a code corresponding to the speech speed range is added at the time of setting.
m) The signal is recorded on magnetic tape. When the speech speed conversion function is turned on when the recorded program is played back by fast-forward playback, this VISS signal is detected, and as a result, sound whose pitch (pitch) does not change is reproduced.

[0003]

However, in such a conventional technique, the VISS signal is recorded only when the speech speed range is set. Therefore, if the speech speed is set at the same time as the start of recording and the fast-speed playback function is turned on from the beginning, the sound can be heard within the speech speed range set at the time of recording, but normal playback will be performed halfway. If the operator does not reset the speech speed range, the VISS signal is not detected in the middle of the playback. I could not watch the program. Also, if the speech speed range is set during recording, and the user wants to view a program in a desired speech speed range from the start of recording to the setting of the speech speed range, the speech speed range is reset. Needed.

Therefore, a main object of the present invention is to provide a magnetic recording / reproducing apparatus with a speech speed conversion function capable of reproducing an audio signal in the speech speed range set at the time of recording without resetting the speech speed range. To provide.

[0005]

According to the present invention, a speech speed setting signal recorded together with an audio signal on a magnetic tape is detected during reproduction of the magnetic tape by setting a speech speed range when recording an audio signal. Pitch (pitch)
A magnetic recording / reproducing apparatus with a speech speed conversion function for outputting a voice whose speech does not change in a speech speed range, wherein a speech corresponding to the speech speed range from a point at which recording of an audio signal starts to a point at which recording of an audio signal ends. A magnetic recording / reproducing apparatus having a speech speed conversion function, comprising a signal recording means for recording a speed setting signal.

[0006]

For example, when the speech speed range is set by the speech speed range setting means at the start of recording of a program, for example,
The speech speed setting signal is recorded on the magnetic tape from the speech speed range setting to the end of recording by the setting signal recording means. When the recording is completed, whether or not the speech speed range has been set in the middle of the recording is determined by, for example, the determination unit. According to the determination result, the magnetic tape is rewound to the recording start point by, for example, the rewinding unit. Thereafter, a speech speed setting signal is recorded from the recording start point to the set point of the speech speed range, for example, by the second signal recording means.

[0007]

According to the present invention, since the speech speed setting signal is recorded from the point where the recording of the audio signal is started to the point where the recording of the audio signal is completed, the speech speed conversion function is turned on during the reproduction. Even in this case, the audio signal can be reproduced in the speech speed range set at the time of recording without resetting the speech speed range.

The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

[0009]

Referring to FIG. 1, a video tape recorder 10 having a speech speed conversion function according to this embodiment includes a microcomputer 12. The microcomputer 12 responds to a key input signal from the remote controller 14 with a VISS (Video Index Search System) signal or a V
The control signal CTL to which an ASS (Video Address Search System) signal is added is output. That is, by adjusting the duty ratio of the control signal CTL according to the time counter 16 included in the microcomputer 12, "1" or "0" is generated, and the VISS signal or the VA signal is generated.
The control signal CTL taking into account the SS signal is output. Here, as shown in FIG. 3A, “1” is provided after “0”, and then “0” is 2
"0" and "1" are 50 to
This signal is provided with 80 bits and "0" is provided continuously for 2 bits thereafter. The VASS signal is
As shown in FIG. 3B, the signal is a signal in which 16-bit data representing a 4-digit address is surrounded by an 11-bit header. The control signal CTL output from the microcomputer 12 is supplied to the control head 20 via the recording amplifier 18 and is written on the magnetic tape 22 by the control head 20.

As shown in FIG. 2, the control signal CTL written on the magnetic tape 22 is reproduced by the control head 20 at the time of reproduction, and given to the microcomputer 12 via the reproduction amplifier 24. The microcomputer 12 outputs “0” provided in the last two bits of the VISS signal.
The microcomputer 12 recognizes that this signal is a VASS signal when it detects 0 ″ and recognizes this signal as a VASS signal when it recognizes 16-bit data surrounded by two headers. Is the VISS signal or V
A predetermined process is performed based on the ASS signal and a key input signal from the remote controller 14, a speech speed range setting signal is output to a speech speed conversion processing circuit 26, and a switching signal is output to an audio signal processing circuit 28. I do. The audio signal recorded on the magnetic tape 22 is reproduced by a reproduction amplifier 32.
The signal is supplied to a speech speed conversion processing circuit 26 via an amplifier 34, and after undergoing a speech speed conversion process in accordance with a speech speed range setting signal, is supplied to an audio signal processing circuit 28. The audio signal output from the amplifier 32 is
, To the audio signal processing circuit 28. The audio signal processing circuit 28 processes and outputs the audio signal output from the speech speed conversion processing circuit 26 or the audio signal output from the amplifier 36 according to the switching signal.

The remote control 14 includes a speech speed range setting key 30 as shown in FIG. When recording the program, the operator operates the setting key 30 according to the content of the program to set a desired speech speed range. As a result, the VISS signal or the VISS signal corresponding to the set speech speed range
A control signal CTL taking into account the ASS signal is created. That is, the drama key 30a, the sports key 30
b, press any one of the movie key 30c and the news key 30d, or press the speech speed key 30e, then press any of the numeric keys 30f from "1" to "15", and then press the transfer key 30g. For example, as shown in FIG. 5, the VISS assigned to each key
The code and the VASS code are respectively added to 51 to 59 bits, which are empty bits of the VISS signal, and to the tens place and the ones place of the address data of the VASS signal.
Then, the control signal CTL to which the VISS signal and the VASS signal are added is written on the magnetic tape 22 according to the algorithm shown in FIGS. The VISS signal and the VASS signal are read from the magnetic tape 22 according to the algorithm shown in FIG.
An audio signal is output in a speech speed range corresponding to the SS signal and the VASS signal and the reproduction mode.

Therefore, for example, if a news key 30d is pressed when recording a news program, a VISS signal and a VASS signal corresponding to the news key 30d are recorded on the magnetic tape 22. When the playback mode is set to 2 × speed when playing this news program,
An audio signal is output in a speech speed range of 0 to 2.0 times.

Referring to FIG. 6 and FIG. 7, a process of recording a VISS signal and a VASS signal at the time of recording a program will be described. First, in step S1, the operation keys 30
Judge whether a key input signal corresponding to is given,
If "YES", a VISS code and a VASS code corresponding to the key input signal are set as input codes in step S3. If "NO", a VISS code and a VASS code corresponding to the movie key 30c are set in step S5. Set as initial code. When the code is set in step S3 or S5, it is determined in step S7 whether or not the recording has been started. If not, the process returns to step S1. The VISS code set in S3 or S5 is added and recorded.
VASS set in step S3 or S5 for SS signal
Record with the code added.

Subsequently, in step S13, it is determined whether or not a key input signal corresponding to the setting key 30 has been input. If "NO", the process proceeds to step S15.
If "YES", in step S17, the count value of the counter 38 at this time is written in the RAM 40. Thereafter, in step S19, an input code corresponding to the key input signal is set, and in step S21, V is set.
The VASS code set in step S19 is added to the ASS signal and recorded. Subsequently, the flag 42 is set in step S23, and the process proceeds to step S15.

In step S15, it is determined whether or not the recording has been completed. If not completed, the process returns to step S11.
It is determined whether or not 2 is set. Here, if the flag 42 is not set, the process is terminated. If the flag 42 is set, the flag 42 is reset in step S27 and the magnetic tape 22 is rewound in step S29. Next, step S3
It is determined in step 1 whether or not the VISS signal has been searched. If the VISS signal is searched, the VISS signal set in step S19 is added to the VISS signal in step S33, and then the magnetic tape 22 is fast-forwarded in step S35. Subsequently, in step S37, the VASS signal is added with the VASS code set in step S19 and recorded, and in step S39, the current counter 32
Then, it is determined whether or not the count value coincides with the count value written in the RAM 40. If they do not match, the process returns to step S37, but if they match, the process ends. Step S35 may not be fast forward.

Next, the processing of the microcomputer 12 when reproducing the recorded program will be described with reference to FIG.
First, in step S41, it is determined whether double-speed or single-speed reproduction of a program has been started. If reproduction has been started, it is determined in step S43 whether or not the speech speed conversion function has been set. If "NO" here, in step S45, reproduction without speech speed conversion processing is performed, that is, the audio signal processing circuit 28
A switching signal is output so as to process the audio signal from, and the process proceeds to step S57. Step S43
If "YES" in step S47, it is determined whether a VISS signal has been detected in step S47. If "YES", the VISS code included in the VISS signal is read in step S49. On the other hand, if “NO” in the step S47, the VAS is determined in a step S51.
It is determined whether an S signal has been detected. If “NO”, the process proceeds to a step S45. If “YES”, a VASS code included in the VASS signal is read in a step S49.

Subsequently, in step S53, a setting signal corresponding to the read VISS code or VASS code and the current reproduction mode is supplied to the speech speed conversion processing circuit 26, and the audio signal processing circuit 28 By setting a speech speed range by outputting a switching signal so as to select an output from the speaker 26. Subsequently, in step S55, it is determined whether or not a key input signal corresponding to the setting key 30 has been given.
If "O", it is determined whether or not the reproduction of the program has ended in step S57.Here, if "NO", the process returns to the step S43, but if "YES", the process ends. If "YES" in S55, in step S59, a speech speed range is set by outputting a key input signal, a setting signal corresponding to the current reproduction mode, and a desired switching signal, and then in step S61. It is determined whether or not a VISS signal has been detected, and if a VISS signal has been detected, the process returns to step S49 assuming that reproduction of another recorded program has been disclosed, but if no VISS signal has been detected, the process proceeds to step S63. It is determined whether or not a key input signal of the setting key 30 has been given, and “YES”.
If it is, the process returns to step S59, but if "NO",
In step S65, it is determined whether or not the reproduction of the program has ended. If "NO", the process returns to the step S61, but if "YES", the process is ended.

As described above, since the microcomputer 12 performs processing,
If the speech speed range is set by the input of a key input signal corresponding to the setting key 30 from the remote controller 14 before the start of recording, the VIS corresponding to the speech speed range is set at the start of recording.
The S code is added to the VISS signal, and the VISS signal is recorded on the magnetic tape 22. Also, a VASS code corresponding to the speech speed range is added to the VASS signal,
The S signal is continuously recorded on the magnetic tape 22 from the start of recording to the end.

On the other hand, when the speech speed range is set by the setting key 30 after the start of recording, an initial code is first set immediately before the start of recording. Then, at the start of recording, VI
A VISS code included in the initial code is added to the SS signal, and this VISS signal is recorded.
VAS to which the VASS code included in the initial code is added from the start of recording until the speech speed range is set
The S signal continues to be recorded. When the speech speed range is set, the count value of the counter 38 at this time is written to the RAM 40, and a VASS code corresponding to the speech speed range is added from the time the speech speed range is set until the end of recording. The recorded VASS signal continues to be recorded. When the recording is completed, the magnetic tape 22 is not changed until the VISS signal is recorded.
Is rewound and the VISS signal is recorded.
A VISS signal to which a VISS code corresponding to the reset speech speed range is added is recorded. And the RAM 40
The magnetic tape 22 is fast-forwarded to a position corresponding to the count value written in the VAS, while the VAS corresponding to the speech speed range is
The VASS signal to which the S code is added continues to be recorded.

At the time of reproduction, if the speech speed conversion function is not set, an audio signal whose pitch (pitch) is not controlled is output or muted, but if the speech speed conversion function is set, A speech speed range is set according to the VISS code or VASS code included in the VISS signal or VASS signal reproduced from the magnetic tape 22 and the current reproduction mode, and the audio signal is reproduced in this speech speed range. If a key input signal corresponding to the setting key 30 is given from the remote controller 14 during playback,
A speech speed range corresponding to the key input signal and the current reproduction mode is set, and an audio signal is reproduced in the speech speed range.

According to this embodiment, not only when the speech speed range is set by operating the remote controller 14 before the recording is started, but also when the speech speed range is set during recording, the recording start point is set. VA from the time until the recording end point
Since the SS signal is written, the audio signal can be reproduced in the speech speed range set during recording without resetting the speech speed range during reproduction.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention.

FIG. 2 is a block diagram showing a part of the embodiment in FIG. 1;

FIG. 3A is an illustrative view showing a VISS signal;
(B) is an illustrative view showing a VASS signal;

FIG. 4 is an illustrative view showing a part of the embodiment in FIG. 1;

FIG. 5 is an illustrative view showing a part of the embodiment in FIG. 1;

FIG. 6 is a flowchart showing a part of the operation of the embodiment in FIG. 1;

FIG. 7 is a flowchart showing a part of the operation of the embodiment in FIG. 1;

FIG. 8 is a flowchart showing a part of the operation of the embodiment in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Video tape recorder with a speech speed conversion function 12 ... Microcomputer 14 ... Remote control 20 ... Control head 26 ... Speech speed conversion processing circuit 28 ... Audio signal processing circuit

Claims (5)

(57) [Claims] 1. A speech speed setting signal recorded together with an audio signal on a magnetic tape is set at the time of reproducing the magnetic tape by setting a speech speed range when an audio signal is recorded, and a pitch (pitch) does not change. A magnetic recording / reproducing apparatus with a speech speed conversion function for outputting voice in the speech speed range, wherein a speech corresponding to the speech speed range is recorded from a point at which recording of an audio signal is started to a point at which recording of the audio signal is terminated. A magnetic recording / reproducing apparatus with a speech speed conversion function, comprising a signal recording means for recording a speed setting signal. 2. The voice speed conversion function according to claim 1, further comprising a voice speed setting means, wherein said signal recording means records a voice speed setting signal corresponding to a voice speed range set by said voice speed setting means. With magnetic recording and reproducing device. 3. The speech system according to claim 2, wherein said speech speed setting unit includes a content designation unit for designating the content of the video signal, and a speech speed range determination unit for determining a speech speed range according to the designated content. Magnetic recording / reproducing device with speed conversion function. 4. The magnetic recording / reproducing apparatus with a speech speed conversion function according to claim 2, wherein said speech speed setting means includes a speech speed setting key and a number key. 5. The signal recording means comprises: first setting signal recording means for recording the speech speed setting signal from a point at which the speech speed range is set to a point at which recording of the audio signal ends; and recording the audio signal. Determining means for determining whether the speech speed range has been set during the recording, rewinding means for rewinding the magnetic tape to a recording start point after recording according to the determination result, and 2. The apparatus according to claim 1, further comprising second setting signal recording means for recording the speech speed setting signal up to a point where a speed range is set.
5. The magnetic recording / reproducing device with a speech speed conversion function according to any one of claims 4 to 4.