JPH0630987U - Recording / playback device - Google Patents

Abstract

(57) [Summary] [Purpose] It is an object to obtain a recording / reproducing apparatus in which unnecessary recording in the blank skip detection period on the recording side is suppressed to a minimum. [Structure] When performing dubbing from a C cassette tape 1 to a DAT tape 2, a normal period T is set between songs.
At the time of detection of 2, the control signal is recorded on the DAT tape. While the blank skip processing is being performed, the DAT tape 2 is set in the REC PAUSE state at the time of recording the control signal, and when the blank skip is released, the DAT tape 2 is set to D at the beginning of the next music piece.
The recording on the AT side is restarted and the reproduction on the C cassette side is started. According to the present invention, the control circuit executes the blank skip control on the sending side, and by detecting the control signal, the blank recording period on the recording side medium is the minimum period T.
Since the control is performed so as to hold down to about 2, unnecessary recording in the blank skip detection period on the recording side is held down to the minimum.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a recording control device suitable when performing dubbing, for example.

[0002]

[Prior art]

 For example, when duplicating a music signal recorded on a compact cassette (C cassette) tape to another recording medium such as a digital audio tape (DAT tape), a long blank period especially between songs on the C cassette tape. If (silent period) exists, this blank period will be recorded as it is on the DAT tape.

On the other hand, the C cassette tape recorder has a function called a blank skip function. This function is a function to automatically fast-forward the tape when a blank period continues for a certain period during tape playback, detect the beginning of the next song, and re-enter the playback state.

If the C cassette tape recorder equipped with the blank skip function is used on the sending side for dubbing, the DAT tape on the recording side will only need to lose the recording tape during the detection period during the blank skip.

[0005]

[Problems to be solved by the device]

 However, since the DAT tape on the recording side is recorded on the tape even during the blank skip, there is an inconvenience that noise during fast forward reproduction is recorded during that time. It should be noted that the above disadvantage can be solved by controlling the muting of the reproduced sound of the tape recorder on the sending side during the fast-forwarding reproduction, but the recording side still consumes wasteful DAT tape during this period. It will be.

The present invention has been made to solve such a conventional problem, and provides a recording / reproducing apparatus in which unnecessary recording in the blank skip detection period on the recording side is suppressed to a minimum. With the goal.

[0007]

[Means for Solving the Problems]

 The recording / reproducing apparatus of the present invention firstly has a reproducing means for reproducing the first recording medium on which a plurality of programs are recorded. The first recording medium is a C cassette tape or DAT tape.

Next, a recording / reproducing device for recording / reproducing the second recording medium is provided. The second recording medium is a C cassette tape, a DAT tape, a recordable optical disc, or the like.

Further, blank period detection means for detecting continuous blank periods T1 and T2 (T1> T2) of the reproduction signal of the first recording medium output from the reproduction means, and first reproduction period output from the reproduction means. One program recording means for detecting the head of each recorded program from the reproduction signal of one recording medium. These detecting means are composed of a comparator for comparing the level of the reproduced signal with a predetermined value, a timer circuit for measuring the level continuation time, and the like.

Further, when the blank period detecting means detects the period T1, the first recording medium is reproduced at high speed in the forward direction until the beginning of the next program is detected by the program detecting means, and then the first recording is performed again. The recording medium has a first control means for controlling the medium to a normal reproduction state, controls the recording / reproducing means to record the reproduction signal of the first recording medium on the second recording medium, and the blank period detecting means therebetween. During the period T2 is detected, the control signal is recorded in the second recording medium, and during the period T1, the recording state of the second recording medium is released and reproduced in the reverse direction, and the second recording medium is detected when the control signal is recorded. In a recording pause state, and has a second control means for controlling the second recording medium to the recording state again when the first control means shifts to the normal reproduction state after the beginning of the next program is detected. . These control means are composed of, for example, a CPU operated by a microprogram.

[0011]

According to the present invention, the first control means executes the blank skip control on the sending side, and the second control means detects the control signal to reduce the blank recording period to the second recording medium to the minimum period T2. Control to hold down. Therefore, unnecessary recording during the blank skip detection period on the recording side can be suppressed to a minimum.

[0012]

【Example】

 An embodiment of the present invention using a C cassette tape as the first recording medium and a DAT tape as the second recording medium will be described in detail below with reference to FIGS. 1 to 3.

FIG. 1 shows a block diagram of a recording / reproducing apparatus. Reference numeral 1 is a C cassette tape on the sending side, and reference numeral 2 is a DAT tape on the recording side. It is assumed that a plurality of pieces of music are recorded on the C cassette tape 1 through blanks between songs (silent portions between songs). The signal recorded on the C cassette tape 1 is reproduced by the reproducing head 11 and amplified by the reproducing amplifier 12. This reproduction signal is sent to the switch S1 and also to the comparator 13.

The comparator 13 compares the level of the input reproduction signal with a reference level. This reference level is set slightly higher than hiss noise, and outputs a high level (binary logic level 1) when the reproduced signal is below the reference level, and a low level (binary logic level 0) when the reproduced signal is above the reference level. To do. Therefore, the output of the comparator 13 makes it possible to know whether the current tape reproduction state is between songs or during songs. The output of the comparator 13 is output to the control unit 30 and the timer circuit 14. While the input signal is at a high level, the timer circuit 14 detects the length of the blank period by clock counting, and outputs the signal c to the control unit 30 when the period T1 is detected and the signal d to the control unit 30 when the period T1 is detected. To do. This period T1 is a period in which the operation of the blank skip function is started, and is set to about 10 seconds. Further, the period T2 is set to a usual desired time between songs of about 3 seconds.

Further, the control unit 30 drives and controls the C cassette mechanism unit 15 according to the operation of the key input unit 31, and the C cassette mechanism unit 15 detects an increase in tape tension and controls the tape end signal. Output to 30.

On the other hand, on the DAT tape 2, the reproduction signal of the C cassette given through the terminal a of the switch S1 is converted into a digital signal by the input processing unit 21, and converted into a DAT format signal by the signal processing unit 22. After being constructed, it is amplified by the recording / reproducing circuit 23 and recorded by the rotary head 24. The signal recorded on the DAT tape 2 is reproduced by the rotary head 24, processed by the signal processing unit 22 such as error correction, and further converted into an analog signal by the output processing unit 25 to be applied to the terminal a of the switch S2. Sent. Further, the control unit 30 drives and controls the DAT mechanism unit 26 according to the operation of the key input unit 31, and sends a control signal to the signal processing unit 22.

The key input section 31 includes operation keys for the C cassette tape 1 and the DAT tape 2, and a dubbing key for instructing dubbing from the C cassette tape 1 to the DAT tape 2. . The control unit 30 sets the switch S1 to the b terminal side and the switch S2 to the b terminal side when the reproduction operation of the C cassette tape 1 is performed by the key input unit 31, and the output of the reproduction amplifier 12 is led to the power amplifier 32. In this way, the C cassette tape 1 is reproduced from the speaker 33. Further, the control unit 30 sets the switch S2 to the a terminal side when the DAT tape 2 is reproduced by the key input unit 31, and the output of the output processing unit 25 is led to the power amplifier 32. , The DAT tape 2 is reproduced from the speaker 33. When the dubbing key is operated, the switch S1 is set to the a terminal side so that the reproduction signal of the C cassette tape 1 is led to the DAT tape 2 side, and the C cassette tape 1 is in the reproduction state, DAT. The tape 2 is put in a recording state.

Next, the operation of this embodiment having the above configuration will be described with reference to FIGS. 2 and 3.

First, as shown in FIG. 3 (1), the C cassette tape 1 has a first song from P1 to P2, a second song from P3 to P4, a third song from P5 to P6, and a fourth song from P7 onward. Has been recorded, the period from P2 to P3 is about 2 seconds, the period from P4 to P5 is longer than usual, about 5 seconds, and the period from P6 to P7 is 15 seconds, which is considerably longer. The period is about the same.

When dubbing the recorded contents of the C cassette tape 1 to the DAT tape 2, the dubbing key is operated in the key input section 31. At this time, the control unit 30 executes the control operation of the flowchart shown in FIG. First, the switches S1 and S2 are set to the a terminal side, and the path where the reproduction signal of the C cassette tape 1 is led to the DAT side is set. Then, a control signal is sent to each part to set the C cassette side to the reproducing state and the DAT side to the recording state (step G1 in FIG. 2). The signal reproduced by the reproducing head 11 and amplified by the reproducing amplifier 12 is sent to the input processing section 21 on the DAT side via the switch S1, recorded on the DAT tape 2, and sent to the comparator 13. The comparator 13 outputs an inter-track detection signal which becomes a high level between tracks and sends it to the timer circuit 14 and the control section 30. The timer circuit 14 counts the period between songs based on the song detection signal, and outputs a signal d when the blank period between songs is 3 seconds (period T2) and 10 seconds (period T1).

During this dubbing, the control unit 30 determines the output of the timer circuit 14 (step G2), and when the signal d is detected, a process for recording the SK-ID (skip-ID) on the DAT tape 2 is performed. Perform (step G3). This SK-ID is a control signal for automatically fast-forwarding to the beginning of the next song when the SK-ID is detected during playback in the DAT standard, but in this embodiment, the period between songs during dubbing is changed. It is used as a control signal to keep it almost constant.

When the signal c is detected, the control unit 30 executes the blank skip processing of the C cassette tape 1, cancels the recording state of the DAT tape 2 and rewinds, and outputs the signal d When the SK-ID recorded at the time of detection is detected, a process of making a rec pose (recording pause) is executed at that time (step G4). The blank skip process is a process in which when the signal c (period T1) is detected during playback, C cassette tape 1 is fast-forwarded, and the playback state is resumed at the fall of the inter-track detection signal (the beginning of the next song). is there . After this step G4, the control section 30 determines the beginning of the next music piece of the C cassette tape 1 by detecting the trailing edge of the inter-track detection signal (step G5), and at the time of the beginning of this next music piece, the C cassette tape 1 is accurately detected. At the same time as detecting the beginning of the tune and reproducing it, a process (step G6) of canceling the recpose on the DAT side and starting recording (recording) is executed.

That is, in the case of the C cassette tape 1 recorded in the state shown in FIG. 3A, the C cassette side is reproduced (Q1 in FIG. 3B) and the DAT side is recorded (FIG. 3C). Then, the dubbing process is started. Then, the dubbing of the first song is completed (Q2, R2), and the first inter-track state is established. Since the interval P2 to P3 is 2 seconds, there is no detection signal from the timer circuit 14, and the dubbing state is continued. Next, the dubbing of the second song ends (Q5, R4), and the next song interval P4 to P5 is reached. Since this interval is 5 seconds, the period T2 is reached at the time of R5 in FIG. 3 (3), and the SK-ID is recorded on the DAT tape 2. Since this period is less than the period T1, the signal c is not output.

Next, when the dubbing of the third music is completed (Q8, R7 in FIG. 3), the intervals P6 to P7 are reached. The interval between songs is 15 seconds, during which the signal d and the signal c are sequentially output. First, on the DAT side, the SK-ID is recorded according to the signal d at the time of FIG. 3R8, the period T1 is reached at the time of FIG. 3R9, the signal c is output, and the recording state is rewound. If the SK-ID recorded previously is detected during this rewinding (FIG. 3R10), the state shifts to the recpos state.

On the other hand, on the C cassette side, nothing changes at the time of the period T2, and at the time of detection of the signal c of the period T1 (FIG. 3Q9), the state shifts to the blank skip state. This is when the beginning of the next song is detected (Q10 in Fig. 3), it is slightly rewound from the overrun time (Q11) in the fast-forwarding state, and accurate cueing is performed at Q12 (2) in Fig. 3 and the forward playback condition is resumed. Shift to the state. In synchronization with the transition to the reproduction state, the rec pose on the DAT side is released and the DAT side also shifts to the recording state.

When the end of the C cassette tape 1 is detected (step G7 in FIG. 2), both the C cassette and DAT are stopped, and the series of dubbing processing is completed (step G7). Step G8).

The tune of the DAT tape 2 dubbed in this way is made uniform over a period T2 (3 seconds in this embodiment), and the conventional blank skip operation period is recorded as it is. Disappears.

The medium on the reproducing side and the medium on the recording side are not limited to those in the above-described embodiment, and the control signal to be recorded on the medium on the recording side is not limited to SK-ID and may be any specific control signal. Good. In this case, it is more effective to provide a function of automatically fast-forwarding to the next music head by detecting a control signal when reproducing the medium obtained by dubbing.

[0029]

[Effect of device]

 As described above, according to the present invention, the first control means executes the blank skip control on the sending side, and the second control means detects the control signal to minimize the blank recording period on the second recording medium. Since the control is performed so that the blanking skip detection period is about T2, unnecessary recording during the blank skip detection period on the recording side is suppressed to the minimum.

[Brief description of drawings]

FIG. 1 is a block circuit diagram of an embodiment of the present invention.

FIG. 2 is a flowchart for explaining the operation of FIG.

FIG. 3 is a time chart for explaining the operation control of FIG.

[Explanation of symbols]

 1 C cassette tape (first recording medium) 2 DAT tape (second recording medium) 13 comparator 14 timer circuit 30 controller

Claims (1)

[Scope of utility model registration request] 1. A reproducing means for reproducing a first recording medium on which a plurality of programs are recorded, a recording / reproducing means for recording / reproducing a second recording medium, and a first recording medium output from the reproducing means. A blank period detecting means for detecting continuous blank periods T1 and T2 (T1> T2) of the reproduced signal, and a head of each recorded program are detected from the reproduced signal of the first recording medium outputted from the reproducing means. At the time of detecting the period T1 by the program detecting means and the blank period detecting means, the first recording medium is reproduced at high speed in the forward direction until the beginning of the next program is detected by the program detecting means, and then the first recording medium is again reproduced. A first control means for controlling a normal reproduction state; and controlling the recording / reproduction means to record the reproduction signal of the first recording medium onto the second recording medium, and The control signal is recorded on the second recording medium when the period T2 is detected by the blank period detection means during the period, and the recording state of the second recording medium is released and reproduced in the reverse direction and recorded when the period T1 is detected. A second control means for setting the second recording medium to a recording pause state when a signal is detected, and for controlling the second recording medium to the recording state again when shifting to the normal reproduction state after the start of the next program in the first control means is detected. A recording control device characterized by: