JP2582921B2 - Recording and playback device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproduction capable of recording control information such as a program start signal indicating a start position of a program, which is a series of recording information, in a specific area of a recording medium. Related to the device.

2. Description of the Related Art Conventionally, there is a rotary head type magnetic recording / reproducing apparatus called R-DAT as one of the recording / reproducing apparatuses. In this device, a recording signal such as a music signal is transmitted to a PCM (Pulse Code).
e Modulation) and records it in the recording area called the PCM area on the magnetic tape, and records the program start signal, program number, and time information called the subcode in the recording area called the subcode area on the magnetic tape Is done. By reading these subcodes during reproduction of the magnetic tape or during high-speed running, the program number and time can be known, and the start of the program can be performed. Here, the program represents a series of recording information. For example, one piece of music is one program when music is taken as an example.

Usually, the program start signal is automatically recorded at the start of recording when recording a program such as music. Further, by pressing the program start signal recording button during recording of the program, the program is recorded when the button is pressed. Incidentally, there may be a case where it is desired to additionally record a program start signal after recording the program. For example, you may want to split a long program. That is, for example, when a concert is recorded, the recording time is several hours, and a plurality of songs are recorded. Therefore, by recording the program start signal at the beginning of each music piece, it is possible to easily find the desired music piece.

In order to perform additional recording of the program start signal, a recording area called a PCM area in which a program signal such as a music signal is recorded is left as it is, and the program start signal is recorded in a subcode area for a fixed time.
In the conventional R-DAT, the following method is performed when additionally recording a program start signal.

Play around the position where you want to add the program start signal,
Press the program start signal recording button at the desired position,
The program start signal is recorded from the time when the button is pressed.

Play around the position where you want to add the program start signal,
Press the pause button at the position where you want to add, and enter the paused state. Subsequently, when the program start signal recording button is pressed, the program start signal is recorded from the position of the pause state.

Play around the position where you want to add the program start signal,
When the program start signal recording button is pressed at the desired addition position, the reproduction is repeated for a predetermined time from the position where the button is pressed. The repetitive playback section can be moved in the magnetic tape playback direction and in the opposite direction. When the button is pressed again after the movement, a program start signal is recorded from the beginning of the repetition playback section.

Problems to be Solved by the Invention In the R-DAT in which the above-described method is implemented, in the R-DAT, after listening to the recorded content of the desired position, the program start signal recording button is pressed, whereby the program start signal is recorded. In addition, a delay occurs between the actual recording position and the desired position due to a delay in the response time of a human.

Although the program start signal can be accurately recorded from the paused position, it is relatively difficult to pause at a desired position. Further, since the music signal that can be recognized as a continuous signal is stopped, it is difficult to understand the order of the stopped position.

In, each of the above-mentioned problems has been solved by performing repetitive reproduction and moving the repetitive reproduction section. However, since the program start signal is recorded from the head position of the repetitive reproduction section, it is difficult to understand the relationship between the recording start position of the program start signal and the position before it.

An object of the present invention is to set a recording position of control information indicating a main information head position such as a program start signal, and to clearly indicate a front-back relationship of a reference position set as the head position and set the head position. It is an object of the present invention to provide a recording / reproducing apparatus which makes it easier to check a reference position and which can record control information starting from the reference position in a desired recording area simply and accurately.

Means for Solving the Problems The present invention relates to a recording / reproducing apparatus using a recording medium in which the head position of main information is determined by control information, wherein start of head position setting operation, movement of head position, and setting of head position are performed. An instruction means for instructing, when the start position setting operation is instructed by the instruction means during the reproduction of the main information, the reproduction position at the time when the instruction is issued is set as a reference position, and the reference position is sandwiched between the front and rear. A playback control means for repeatedly playing back information of a repetitive playback section for a predetermined period; and during the repetitive playback, when a movement of a head position is instructed by the instruction means, the reference position is moved back and forth within the repetitive playback section. A reference position moving means for moving the reference position to a start position when the instruction means instructs the start position to be set during the repetitive reproduction. The control information is a recording and reproducing apparatus is characterized by providing a recording control means for recording on the recording medium.

According to the present invention, when the start of the head position setting operation is instructed by the instruction means during the reproduction of the main information of the recording medium,
The reproduction position at the time when the instruction is issued is set as a reference position, and the information of the repetitive reproduction section for a predetermined period sandwiching the reference position is repeatedly reproduced. Since the reproduction operation of the repetition reproduction section sandwiching this reference position before and after is repeatedly executed,
The reference position can be easily confirmed. Therefore, for example, when a reference position is set to a blank between music pieces of the preceding and following music signals, it is easy to set the reference position to a position substantially at the center of the blank.

If the reference position does not match the position desired by the operator, the pointing means is operated to move the head position. Even if the head position is moved, the repetitive reproduction section to be reproduced repeatedly does not move back and forth. Thus, the operator can surely move the head position in a state where the main information in the repetitive reproduction section is reproduced.

When the start position is set by the instruction means during the repetitive reproduction, control information with the reference position as the start position is recorded on the recording medium. Thus, the reference position is corrected, and the desired head position can be accurately recorded at the position desired by the operator.

Embodiment FIG. 1 shows a magnetic recording / reproducing apparatus according to an embodiment of the present invention.
21 is a block diagram illustrating a basic configuration of 21. FIG. The analog signal input from the recording input terminal 1 is converted into a digital signal in an analog / digital converter (hereinafter, A / D converter) 2 after passing through a low-pass filter, and is input to a signal processing circuit 3. In the case of digital recording, a digital signal from the digital input terminal 4 is input to the signal processing circuit 3 via the digital interface 5. The signal input to the signal processing circuit 3 is temporarily stored in the memory 6.

The signal processing circuit 3 calculates two parity check codes of C1 and C2 parity for the stored data, and these parity check codes are also written in the memory 6. On the other hand, subcode information such as a program start signal and a program number sent from the control unit 7 is also written in the memory 6. The signal processing circuit 3 includes a rotating drum 9
When the magnetic heads 9a and 9b attached to the memory trace the surface of the magnetic tape 10, the data written in the memory 6 is sequentially read out, and the 8-10 conversion for converting the 8-bit data into the 10-bit data is performed. And then sync signals and ATF (Autom
atic Track Following) Add a signal and output. The output data is amplified by a recording signal amplifier 8 and recorded on a magnetic tape 10 by magnetic heads 9a and 9b provided on a rotating drum 9.

At the time of reproduction, the signals read by the magnetic heads 9a and 9b are amplified by a reproduction signal amplifier 11 and then converted into signals of a signal level "1" and a signal level "0" by a comparator. Circuit 3
Given to. A synchronizing signal is detected from the data signal supplied to the signal processing circuit, and 8-10 inverse conversion for converting 10-bit data into 8-bit data is performed.
Is written to. On the other hand, the ATF signal is provided to the servo circuit 12.

The signal processing circuit 3 performs error detection, error correction, deinterleaving, interpolation, and the like of the acquired data, and outputs the data to a digital / analog converter (hereinafter, D / A converter) 13 and a digital interface 5. The signal that has passed through the D / A converter 13 is converted into an analog signal, and is output from the reproduction output terminal 14 through a low-pass filter and attenuating circuit 22. The attenuation circuit 22 adjusts a signal level based on a control signal from the control unit 7.

The subcode data is provided to the control unit 7, and a program number and a time code are displayed on a display device, and are also used as various control data. ATF signal and drive 15
The detection signals from the various sensors are input to the servo circuit 12 to control various motors. In addition, the drive device 15 performs running control such as reproduction and fast-forward of the magnetic tape 10 based on a control signal from the control unit 7.

A plurality of operation buttons for performing various operations are connected to the control unit 7. In the drawings, the program start signal record button 16, the play button 17,
The rewind button 18 and the fast forward button 19 are shown. Further, a display device is connected to indicate the operating state of the magnetic recording / reproducing device 21. In the drawing, only a program start signal recording indicator (hereinafter, referred to as an indicator) 20 is shown.

The driving device 15 includes the rotating drum 9 to which the magnetic heads 9a and 9b are attached, a plurality of motors for running the tape, various sensors, and the like. Servo circuit 12
Controls the above-described motor to perform various running operations such as reproduction, fast-forward, and rewind of the magnetic tape 10.

FIG. 2 is a diagram showing a track pattern of the magnetic tape 10 recorded by the rotary head type magnetic recording / reproducing apparatus 21. The tracks A0, A1, A2,... Are portions recorded by the magnetic head 9a.
Are read by the magnetic head 9a. Are tracks recorded by the magnetic head 9b, and such tracks B0, B1, B2,... Are read by the magnetic head 9b. Track A0 is in PCM area M
And subcode areas S1 and S2. For example, an audio signal and a frame address as identification information are recorded in the PCM area M, and, for example, a program start signal is recorded in the subcode areas S1 and S2. The frame address is a sequential number recorded by adding, for example, "1" at the time of recording.

The subcode area S1 is divided into a plurality of areas, and the same data is recorded in each area. The subcode area S2 has the same configuration as the subcode area S1. Thus, even if the magnetic tape 10 is run in the normal running direction (the direction of the arrow R1) or in the reverse direction (the direction of the arrow R2) at a running speed several times to several tens times the normal running speed, The areas S1 and S2 can be read. Tracks A1, A2, ... and tracks B0, B
1, B2,... Have the same configuration as the track A0. Track Ai
(I = 0, 1, 2,...) And the track Bi constitute a frame Fi. Hereinafter, the recording area indicates a frame.

FIG. 3 is a flowchart for explaining a recording operation of a program start signal. In step a1, a cassette tape on which a program start signal is to be additionally recorded is set in the magnetic recording / reproducing device 21, and the play button 17 is pressed. Thus, the control unit 7 controls the servo circuit 12 and the drive unit 15 to reproduce the magnetic tape 10. When the magnetic tape 10 enters the reproducing state, the music signal output from the reproducing output terminal 14 is monitored by, for example, a speaker.

In step a2, the program start signal recording button 16 is pressed when the portion where the program start signal is to be additionally recorded is reproduced. In step a3, the control unit 7 sets the recording area being reproduced when the program start signal recording button 16 is pressed as the recording scheduled area which is the reference position of the program start signal, and sets the frame address as the identification information of the recording scheduled area. It is stored in the memory in the control unit 7.

In step a4, the servo circuit 12 and the driving device 15 are operated so that the predetermined number of recording areas including the recording area are repeatedly reproduced, for example, the recording area corresponding to 3 seconds before and after the recording area is repeatedly reproduced. Control. During the repeated reproduction, the control unit 7 reproduces the recording-scheduled area based on the identification information stored in the memory.
The indicator 20 is turned on and turned off at the end of the repetitive playback section. Such a repetitive reproduction operation is repeatedly executed, and the operator can check the recording expected area while monitoring the reproduction signal in the recording expected area and watching the indicator 20.

In step a5, when the set recording scheduled area is the recording area desired by the operator, the process proceeds to step a6, and the program start signal recording button 16 is pressed again. In step a7, the control unit 7 sets the subcode data recording mode, and controls the signal processing circuit 3 and the driving device 15 for recording the subcode data. In step a8, a program start signal is recorded from the recording expected area of the magnetic tape 10 for a predetermined time, that is, over a predetermined number of recording areas.

In step a5, if the set recording area is different from the recording area desired by the operator,
At a9, the recording area is changed. The change of the recording scheduled area can be freely changed within the repetitive reproduction section. For example, to move the recording start signal recording area in the forward direction (the direction indicated by arrow R1),
Press the rewind button 18 during repeated playback. Here, the control unit 7 recognizes the rewind button 18 as a button for setting the movement of the program start signal in the forward direction of the recording scheduled area, and every time the rewind button 18 is pressed once, for a predetermined time, for example, 0.3 seconds. The recording area is shifted forward by the number of corresponding recording areas, and the corresponding identification information is stored in the memory. Therefore, when the rewind button 18 is pressed a plurality of times, it is possible to move for a moving time (here, 0.3 seconds × the number of times) corresponding to the number of times the rewind button 18 is pressed. As a result of the above operation, the recording start area of the program start signal is moved forward and set, and the timing of turning on the indicator 20 is also earlier than before the change.

When the recording start area of the program start signal is to be moved backward (in the direction indicated by the arrow R2), the fast forward button 19 is used. Also in this case, the same operation as when the rewind button 18 is pressed is performed, whereby the recording area can be moved backward.

After the movement of the recording-scheduled area, the process returns to step a4, and the repetitive reproduction is continuously executed, and in step a5, it is confirmed whether or not the area is a desired recording area. In this way, the recording start area of the program start signal can be moved back and forth to match the recording area desired by the operator. Thereafter, by pressing the program start signal recording button 16 in step a6, the program start signal is recorded on the magnetic tape 10 in the same manner as described above.

FIG. 4 is a flowchart for explaining the repetitive reproduction operation of step a4 shown in FIG. When the program start signal recording button 16 is pressed during reproduction of the magnetic tape 10, the indicator 20 is turned on in step n1. In step n2, it is determined whether or not the repetitive playback section has ended. When the end has been completed, the indicator 20 is turned off in step n3.

Thereafter, in step n4, the magnetic tape 10 is rewound. In step n5, it is determined whether or not the current position is the start position of the repetitive reproduction section. If the result is affirmative, the magnetic tape 10 is reproduced in step n6. At step n7, it is determined whether or not the recording area being reproduced is a recording area. If the result is affirmative, the process returns to step n1 to light the indicator 20.

FIG. 5 is a diagram for explaining a recording operation of a program start signal. The additional recording operation of the program start signal described above will be specifically described with reference to FIG. Magnetic tape
10 is reproduced by running in the direction of arrow R1 as shown in FIG. 5 (1). When the recording area T1 to which a program start signal is to be added is reproduced in this reproduction state, the program start signal recording button 16 is pressed. At this time, the button 16 is actually pressed at the time of reproduction of the recording area T2 due to the delay of the response time of the operator, as shown in FIG. Is stored in the internal memory. Thereafter, the recording area TA is located a predetermined number of forward directions (direction indicated by an arrow R1) from the recording area T2, and the recording is located a predetermined number backward (direction indicated by an arrow R2) from the recording area T2. Repetitive reproduction is performed with the area TB.

The position of the recording area T2 is confirmed by the indicator 20 as a recording start area of the program start signal, and it is found that the recording area does not match the recording area desired by the operator, so that it is necessary to perform a correction operation. In this case, the user wants to move the recording scheduled area in the forward direction, so the rewind button 18 is pressed once. As a result, as shown in FIG. 5 (3), the scheduled recording area moves forward by a predetermined number of recording areas,
The recording area T3 is a recording scheduled area. Indicator here
The recording planned area is confirmed by 20. If the moving amount is insufficient, the rewind button 18 is pressed again. As a result, the recording area moves further forward, and the recording area T4 becomes the recording area as shown in FIG. 5 (4).

Here, again, the recording scheduled area is confirmed by the indicator 20, and if the operator agrees with the desired recording area T1, the program start signal recording button 16 is pressed, whereby the program start signal recording button 16 is pressed as shown in FIG. The program start signal is recorded for a predetermined time from the recording area T4.

As described above, according to the present embodiment, when additional recording of the program start signal is performed, the recording areas before and after including the recording scheduled area set when the program start signal recording button 16 is first pressed are set. Since the area to be recorded is repeatedly reproduced and the area to be recorded can be confirmed by the indicator 20, the positional relationship of the area to be recorded on the magnetic tape can be clearly recognized.

This makes it possible to easily correct the planned recording area, and to accurately record the program start signal from the recording area desired by the operator.

In addition, the operation of changing the recording scheduled area can be performed only by operating the rewind button 18 or the fast forward button 19,
The scheduled recording area can be corrected with a simple operation, and the operability and convenience are significantly improved.

FIG. 6 is a flowchart for explaining another embodiment of the present invention. The feature of the present embodiment is that the output level of the reproduction signal is changed at the time of reproducing the recording-scheduled area in the repetitive reproduction operation of step a4 in FIG.

When the program start signal recording button 16 is pressed during the reproduction of the magnetic tape 10, the indicator 20 is turned on in step m1. At step m2, it is determined whether or not the repetitive playback section has been completed. If it has been completed, the indicator 20 is turned off at step m3. Thereafter, in step m4, the magnetic tape 10 is rewound. In step m5, it is determined whether or not the current position is the start position of the repetitive reproduction section. If the result is affirmative, the process proceeds to step m6.

When the magnetic tape 10 is reproduced in step m6, the output level of the reproduced signal is reduced and output in step m7.
At step m8, it is determined whether or not the recording area being reproduced is a recording scheduled area. If the judgment is affirmative, step
At m9, the output level of the reproduction signal is increased to a normal output, and the process returns to step m1 to turn on the indicator 20 again.

Here, the recording operation of the above-described program start signal will be specifically described with reference to FIG. As shown in FIG. 5 (1), the magnetic tape 10 runs in the direction of arrow R1 and is reproduced. The operator presses the program start signal recording button 16 when the recording area T1 in which the program start signal is to be additionally recorded is reproduced. At this time, the operator hears the playback signal and then presses the program start signal recording button 16, so that
A recording area T2 which is later than the recording scheduled area T1 by the response time until the operator presses the button is set as the recording scheduled area, and the identification information of this recording area T2 is stored in the memory in the control unit 7. . After that, the control unit 7 repeatedly reproduces the recording area between the recording area T2 and the recording area TB which is a predetermined number later than the recording area T2 to the recording area TA before the recording area T2.

The recording area T2 is confirmed when the reproduction output level changes or when the indicator 20 is lit, and it can be seen that the recording area T2 does not match the recording scheduled area T1 desired by the operator, so a correction operation is performed. In this case, since the user wants to move the recording area forward, the rewind button 18 is pressed once. As a result, as shown in FIG. 5 (3), the recording area moves forward, and becomes the position of the recording area T3.

Here, the position of the recording area T3 is confirmed again when the reproduction output level changes or the indicator 20 is lit, and if the amount of movement is insufficient, the rewind button 18 is pressed again. As a result, as shown in FIG. 5 (4), the scheduled recording area becomes the recording area T4.

Here, as described above, depending on where the reproduction output level changes or where the indicator 20 lights up,
Check the position of the recording area T4, and if it matches the recording area desired by the operator, press the program start signal recording button.
Press 16. Thereby, as shown in FIG. 5 (5),
A program start signal is recorded from the recording area T4 for a certain period of time.

As described above, according to the present embodiment, when additional recording of the program start signal is performed, the recording areas before and after including the set recording scheduled area are repeatedly reproduced, and the recording scheduled area is indicated by the indicator 20. Since the confirmation is made by the change of the lighting and the reproduction output level, the positional relationship of the recording scheduled area can be clearly recognized. This makes it possible to easily correct the recording-scheduled area, and accurately record the program start signal at a position desired by the operator.

Effect of the Invention According to the present invention, when performing additional recording of control information in which the head position of the main information is determined, the reference position when the start of the head position setting operation is instructed by the instruction means is sandwiched between the front and rear. Since the information of the repeated playback section for the predetermined period is repeatedly played back, the positional relationship before and after the reference position can be clearly recognized.

During the repetitive reproduction of the repetitive reproduction section, the movement of the head position is instructed by the instruction means, and the reference position in the repetitive reproduction section can be moved back and forth. Accordingly, the operator can accurately bring the reference position to a desired position.

Even if the reference position moves forward or backward by the instruction to move the head position, the repetitive playback section does not move back and forth. Therefore, for example, the repeat playback period including a blank between the music pieces of the preceding and following music signals may be repeated. After the setting, excellent operability is achieved in that the reference position within the blank is easily set. In this way, the reference position can be easily corrected, and the reference position can be accurately brought to a position desired by the operator.

When the setting of the head position is instructed by the instructing means, the control information having the reference position as the head position is recorded on the recording medium. Therefore, the start position can be set as described above by an easy operation.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a basic configuration of a magnetic recording / reproducing apparatus 21 according to one embodiment of the present invention, FIG. 2 is a view showing a track pattern of a magnetic tape 10, and FIG. FIG. 4 is a flowchart for explaining a repetitive reproduction operation, FIG. 5 is a diagram for explaining a recording operation of a program start signal, and FIG. 6 is another embodiment of the present invention. It is a flowchart for explaining. 3 ... signal processing circuit, 7 ... control unit, 9 ... rotating drum, 9a, 9b ... magnetic head, 10 ... magnetic tape, 12 ...
Servo circuit, 15 Drive, 16 Program start signal record button, 17 Play button, 18 Rewind button, 19 Fast forward button, 20 Program start signal record indicator, 21 Magnetic Recording / reproducing device, 22 Attenuator circuit

Claims (1)

(57) [Claims] 1. A recording / reproducing apparatus using a recording medium in which a head position of main information is determined by control information, an instruction means for instructing start of a head position setting operation, movement of a head position, and setting of a head position. During the reproduction of the main information, when the start position setting operation is instructed by the above-mentioned instruction means, the reproduction position at the time when the instruction is made is set as a reference position, and the repetition is repeated for a predetermined period sandwiching the reference position back and forth. Playback control means for repeatedly playing back information of a playback section; and reference position movement for moving the reference position back and forth within the repeated playback section when movement of the head position is instructed by the instruction means during the repeated playback. Means for, when the setting of a head position is instructed by the instructing means during the repetitive reproduction, transmitting control information having the reference position as the head position to the recording medium. And a recording control means for recording data on a recording / reproducing apparatus.