JPH0664899B2 - Program cue signal reproduction device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a video tape recorder (hereinafter referred to as VTR).
The present invention relates to a program cue signal reproducing device that can be used in magnetic recording / reproducing devices such as

2. Description of the Related Art In a VTR or the like, searching for the first tape position where the program to be played is recorded is called cueing.

Conventionally, the program cueing method in a VTR is such that when recording a program, a full width erasing head records a 30 Hz signal for 1 second as a cueing signal at the beginning of the program and It counts the number and searches for the beginning of the desired program.

An example of the conventional program cueing method described above will be described below with reference to the drawings.

FIG. 7 is a schematic plan view of the tape running system during recording running, and FIG.
The figure is a schematic plan view of the tape running system during fast-forwarding and rewinding. 1 is a cassette case, 2 is a take-up reel, 3 is a supply reel, 4,7,10,11,13,14,16,17,18. , 20 are posts, 5 is a capstan, 6 is a pinch roller, 8 is an AC head, 9 is an impedance roller, 12 is a cylinder, 15 is a full width erasing head, 19 is a tape, and 21 is a cue signal reproducing head. VT
When R is set to the recording mode, the tape running system shown in FIG. 7 is obtained. When the recording of the program is started, the full-width erasing head 15 records a 30 Hz signal at the beginning of the program on the tape 19 as a cue signal for 1 second. The full-width erasing head 15 has a function of erasing the previously recorded signal by recording the signal of the normal recording mode time + KHz or more on the tape, but the head portion of the program is the same as described above. It also has the role of recording the outgoing signal. When the program cue mode is set, the tape running system shown in FIG. 8 is set to the fast forward or rewind mode, and the cue signal recorded on the tape 19 is detected by the cue signal reproducing head 21. The tape running system shown in FIG. 8 is in a state in which the tape 19 is pulled out partway by the post 20 (hereinafter, this state will be referred to as a sub-loading state), and the tape 19 has the AC head 8 and the cue reproducing head 21. The fast-forwarding and rewinding mode is performed in the state of contact with the tape. However, in the fast-forwarding and rewinding mode, the sub-loading state is not required as long as the cue reproducing head 21 is in contact with the tape 19.

FIG. 9 is a principal block diagram showing the configuration of an embodiment of a conventional program cue signal recording apparatus, and 15 is a full-width erasing head,
Reference numeral 19 is a tape, 41 is a running control means for controlling the running of the tape 19, 42 is a cue signal producing means, and 43 is an erasing signal producing means.

The operation of the conventional program cue signal recording apparatus configured as described above will be described below.

First, when the VTR is set to the recording mode, the tape 19 becomes the tape running system shown in FIG. 7 by the running control means 41. When the signal for indicating that the tape running system shown in FIG. 7 has been entered from the running control means 41, the cue signal creating means 42 generates a 30 Hz signal as a cue signal for only one second, and the erase signal creating means. The 43 generates a signal of several tens KHz or more as an erase signal while the VTR is in the recording mode. The cue signal and the erase signal are recorded on the tape 19 via the full-width erase head 15. By this operation, a 30 Hz signal is recorded at the beginning of each program on the tape 19 as a cue signal for 1 second.

FIG. 10 is a block diagram of a main part showing an example of the configuration of a conventional program cue signal reproducing device. 2 is a take-up reel, 3 is a supply reel, and 19 is a program cue signal recorded at the beginning of each program. The tape 21, which is a cue signal reproducing head, is attached at the position shown in FIGS. 7 and 8. 31 is a cue signal detecting means for detecting a cue signal from the signal reproduced by the cue signal reproducing head 21, 32 is a take-up reel motor,
33 is a supply reel motor, 34 is a switch (hereinafter referred to as SW) for setting a program number to be cueed, 35a is a SW for starting cueing by fast forward, 35b is a SW for starting cueing by rewinding, 36 is SW34 To set the program number you want to cue, and then cue mode setting means to start cueing when SW35a or SW35b is pressed, 37 is the program number you want to cue out set by cueing mode setting means 36 When a signal indicating the start of cueing is received from the cueing mode setting means 36, the display section 38 displays the cueing signal detected by the cueing signal detecting means 31 for fast-forwarding or rewinding the tape 19 and cueing. Traveling control means for searching for a program to be searched for which is set by the mode setting means 36, 39 is a take-up reel motor drive means, and 40 is a supply reel motor drive means.

The operation of the conventional program cue signal reproducing device configured as described above will be described below.

First, if you want to show the beginning of a program, enter the program number with SW34. At this time, since the present embodiment is an embodiment of the relative address cueing system, the program number is designated such that the program one before and the program two behind are based on the program at the current position. The cue mode setting means 36 sets the relative number of the program to be cueed by the input from the SW 34, and displays the number on the display unit 37. After setting the number, the cue mode setting means 36 sends a signal for starting the cue in the fast-forward mode when the SW 35a is pressed and a signal for starting the cue in the rewind mode when the SW 35b is pressed to the traveling control means 38. It also sends the set number information to the traveling control means 38. The traveling control means 38 follows the take-up reel motor drive means 39 and the supply reel motor drive means 40 according to the signal indicating the fast forward or the rewind sent from the cueing mode setting means 36, and the take-up reel motor 32 and the supply reel motor. 33 is driven to fast forward or rewind the tape 19, and the cue signal detection means
The number of cue signals recorded on the tape 19 detected by 31 is counted, and when the number information sent by the cue mode setting means 36 matches the count number, the search for the beginning of the desired program is terminated.

Problems to be Solved by the Invention However, in the above-mentioned configuration, since the relative program number is input, when setting the number, the program number at the current tape position and the number of the program to be cueed are changed. It must be calculated and set by the user each time, and the program number setting at the time of cueing in the rewind mode is the cueing signal before the current tape position is the cueing signal of the current program. Therefore, when it is desired to find the beginning of the previous program, it is necessary to set the preceding cue signal, which is very troublesome for setting the program number. Moreover, since the conventional cueing signal is recorded over the entire width of the tape by the full width erasing head, when the portion where the cueing signal is recorded is reproduced, band-shaped noise is generated on the screen, which adversely affects the video signal. I will end up.

In the above-mentioned conventional program cueing signal reproducing apparatus, the relative address cueing system has been described. However, if the conventional cueing signal is used to perform absolute address cueing, the current address when the tape is first inserted is used. In order to know what the program number is, there is no other way than to find out how many cue signals are recorded at the tape position before the current tape position, so at the beginning of the first program, up to the beginning of the tape Since it is necessary to rewind and count the cueing signal from the beginning of the tape, it takes a very long time to search for the desired program, and the cueing is performed in a mode in which the tape running speed is slow such as slow playback and frame advance playback. Since the cue signal must be counted even when passing the position where the signal is recorded, a magnetic flux response type head is required for the cue signal reproducing head.
Even if the cue signal recorded for a second is reproduced many times with a very long time interval, or when the tape running direction changes while the cue signal is being reproduced, the current position However, there is a problem in that a very complicated process must be performed to realize the absolute address cueing using the conventional cueing signal.

In view of the above problems, the present invention simplifies the duty change of a control signal and a signal group in which the program number itself is data-recorded by duty-modulating the signal by using the control head instead of recording the cue signal by the full-width erasing head. By recording a signal group that can be configured by various circuits as a cue signal, a program cue signal reproducing device having a simple structure, a short program search time, and no influence on a video signal is provided.

Means for Solving the Problems In order to solve the above problems, the program cue signal reproducing device of the present invention records the signal on the first traveling control means for controlling the traveling of the recording medium. Head, program number setting means for setting the program number, information 0 and information 2
A signal l of information 1 (provided that
A header having a structure in which at least 1 bit of information 0 is added before and after l ≧ 5) bits and the program number set by the program number setting means is a BCD code of m (where m ≧ 1) digits The first code signal group obtained by repeating the program number code set in step n (where n ≧ 1) times and the second code signal group in which the information 0 is k (where k ≧ 1) bits are combined. Program cueing signal coding means for coding as a cueing signal, and means for outputting a recording signal to the head when the recording medium is running in the recording mode by the first running means, and the program cueing The cueing signal coded by the signal coding means is sequentially set to information 0 from the most significant bit or the least significant bit.
In the recording mode other than that, the duty of the output signal is modulated to the first state, when the information is 1, the duty of the output signal is modulated to the second state, and the cue signal is recorded. Is configured to reproduce information recorded by a program cueing signal recording device having recording signal generating means for outputting a signal having a duty other than the first state or outputting no signal. In the case of performing the absolute address system program cueing, a reproducing head for reproducing the cueing signal when the recording medium is in the fast-forwarding or rewinding state, and a signal reproduced by the reproducing head, Program number detecting means for reading a program number code, cue mode setting means for setting a program number to be cueed and starting a program cue search, and program cueing from the cue mode setting means When a signal indicating that the program is being searched for is input, the recording medium is rewound or fast-forwarded, and a signal indicating a program number from the cue mode setting means indicating a program number to be searched and a program number from the program number detecting means. Is compared with the signal indicating that the recording medium is fast forwarded or rewound to search the position of the recording medium on which the program number to be searched for is recorded, and the program number detecting means detects the recording medium. And a traveling control means for outputting a signal indicating the traveling direction. Further, when performing a program cue at each station stop, an amplification circuit for amplifying a signal reproduced by the reproduction head, and a waveform shaping circuit for obtaining a square wave from the positive edge and the negative edge of the output signal of the amplification circuit, An integrating circuit for integrating the square wave obtained by the waveform shaping circuit,
When a reference voltage creating circuit that obtains a reference voltage, a comparison circuit that compares the output voltage of the integrating circuit and the reference voltage obtained by the reference voltage creating circuit, and a program cueing mode is set and the program cueing mode is set. In addition, the recording medium is fast-forwarded or rewound, and when the output of the comparison circuit becomes an output obtained by detecting the signal of the information 0, the running control means for ending the program cueing is provided.

Operation According to the present invention, the first code signal group in which the program number itself is data-recorded is used when an absolute address program is cued, and the second code having a signal duty different from that in normal recording is used. Cue for the signal group to stop at each station (search for a cue signal one before or after the current tape position to play or stop the VTR)
Or, when using relative address program cueing, when performing absolute address program cueing, instead of counting the number of cueing signals as in the conventional case, the set program number to be cueed and the playback cue Since it is possible to search for a program by directly comparing the program number in the output signal, it is not necessary to return to the beginning of the tape without a malfunction with a simple structure, and it is possible to find the program in a short time. At the beginning of the address program, the difference in signal duty can be discriminated by a simple integrating circuit composed of a resistor and a capacitor, resulting in a very simple configuration. Further, since the cue signal is generated by changing the duty of the control pulse, there is no adverse effect on the video signal.

Embodiment A program cue signal reproducing device according to an embodiment of the present invention will be described below with reference to the drawings.

First, the cue signal handled in this embodiment will be described. In the VTR, controller pulses are recorded on tape to control the capstan motor and cylinder motor so that the video signal at the time of recording the program is not disturbed. Control pulse is 1 for saturation recording of N pole and S pole on the tape.
One cycle of 33.3 msec is recorded, and the positive edge of the control pulse during reproduction is used to control each motor, and the negative edge is irrelevant to the control of each motor. That is, whatever value the duty of the control pulse at the time of recording is, it has nothing to do with the basic operation of the VTR. In the present embodiment, utilizing this fact, the duty of the control pulse is modulated to produce the cue signal.

FIG. 3 is a diagram showing a waveform of a control pulse according to the embodiment of the present invention. FIG.
The figure (b) shows the positive edge waveform of the control pulse, the figure (c) shows the waveform of the negative edge of the control pulse, and the figure (d) shows the flip-flop set at the positive edge of the control pulse and the flip-flop at the negative edge. 3 is a waveform showing control data created by resetting. Third
As shown in the figure, the control pulse duty is 50%
If it exceeds 50%, the information is 1, and if it is less than 50%, the information is 0.

FIG. 4 is a diagram showing a code of a cue signal in the embodiment of the present invention, which is composed of a signal group of a control pulse showing 1 information and a control pulse showing 0 information shown in FIG. There is. In FIG. 4, (A) is a block code, (B) is a head code, (C) is a program number code, (D) is an absolute address cue signal, and (E) is (E). ) Is a cue number for stopping each station, and (F) in the figure is a cue signal. Block code (A) is
A head code (B) recorded as 0111110 and a program number code (C) that is made up of a two-digit binary coded decimal (abbreviated as BCD code) and indicates the number of the program from the beginning. Composed of. The reason why the head code (B) is 0111110 is that in a multi-digit BCD code, 1 can be entered up to 4 times consecutively between 0s (for example, if decimal 79 is expressed by BCD code, 01111001).
This is because no matter which position on the tape is run in the forward direction or the reverse direction, if 0111110 is detected, it can be immediately recognized as the head code. This block code (A) is repeated three times to find the absolute address cue signal (D) and the station stop cue signal (E) in which a control pulse indicating 0 information continues 10 times. It is recorded as the output signal (F), and thereafter, the control pulse indicating the information of 1 is recorded. In the present embodiment, the head code (B) is formed such that 1's continue 5 times in succession, but it may be any number of times 5 or more, and the number of 0's added before and after the continuous 1's code is also once. Any number of times is acceptable as long as it is above. The block code (A) may be recorded any number of times instead of three times, and the program number code (C) may be any number of BCD codes instead of two. Also, the cue signal (E) for stopping each station is not in the form of 0 consecutive 10 times, and may be any bit as long as it can be detected by the integrating circuit used in the program cue signal reproducing apparatus of each station stopping method of the present invention described later. . In addition, when the head code (B) is added once at the end of the absolute address cue signal (D),
By detecting the head code (B) added when the cue signal is detected by running the tape in the reverse direction, the last recorded program number code can be made effective data.

FIG. 5 is a principal block diagram showing a configuration example of a program cue signal recording apparatus which is effective in combination with the present invention. In the figure, 8 is an AC head for recording a control pulse, 19 is a tape, 60 is a running control means for setting the mode of the whole VTR (not shown) and controlling the running of the tape 19 to generate a control pulse, and 61 is SW for setting the program number to be recorded, 62 is program number setting means for inputting SW61 to set the program number, and 63 is a cue signal shown in FIG. 4 from the program number set by the program number setting means 62. The program cueing signal coding means for creating the code of 64, 64 is a control means according to the cueing signal generated by the program cueing signal coding means 63 when a signal indicating that the recording mode has been entered from the running control means 60.
Reference numeral 60 is a recording signal creating means for modulating the duty of the control pulse input from the output, and 65 is a control pulse driver. A microcomputer 66 has a program number setting means 62, a program cueing signal coding means 63, and a recording signal generating means 64 inside.

Next, the operation of this embodiment will be described. FIG. 6 is a flowchart showing a part of the processing operation of the microcomputer 66. Step 101 and step 102 are the program number creating means 62, and when the SW 61 is pressed, the program number is set. When the VTR is set to the recording mode after the program number is set, the information is notified to the microcomputer 66 from the running control means 60, passes through the step 103, and is set in the step 102 by the processing of the program cueing signal coding means 63 in the step 104. It is encoded into the cue signal shown in FIG. 4 on the basis of the broadcast program number. Recording signal generation means 6 from step 105 onward
In the processing of 4, if the rising edge of the control pulse input from the traveling control means 60 is detected in step 105, step 10
The control pulse output is set to H level at 6 and the control pulse is recorded on the tape 19 via the driver 65 and the AC head 8. In the processing for setting the duty of the control pulse to be recorded in steps 107 to 113, the H level is less than 50% when the information is 0 according to the code of the cue signal shown in FIG. The internal timer of the microcomputer 66 is used so that the H level will exceed 50%. During the recording mode in step 114, recording of the control pulse is repeated, and when the recording mode is stopped, the process ends.

A method of cuing a program using the cuing signal recorded as described above will be described below.

FIG. 1 is a block diagram of essential parts showing a configuration of an absolute address system program cue signal reproducing apparatus according to an embodiment of the present invention. In the figure, 2 is a take-up reel, 3 is a supply reel, 8 is an AC head mounted at the position shown in FIGS. 7 and 8, and 19 is the aforementioned cue signal recorded at the beginning of each program. Tape, 32 is a take-up reel motor, 33 is a supply reel motor, 39 is a take-up reel motor drive means, 40 is a supply reel motor drive means, 51 is a program number from a control pulse reproduced by the AC head 8. Program number detecting means for detecting, 52 is a SW for setting a program number to be cued, 53 is a SW for starting cuing, 54 is a switch for inputting the program number to be cued by inputting SW52 and SW53, and cuing is started. Cue mode setting means for making 55, a display section for displaying the program number to be cueed and the current program number, 56 is a cue mode setting means 54
Numeral 57 is a running control means for fast-forwarding or rewinding the tape 19 in accordance with a signal from the program number detecting means 51 and a signal from the program number detecting means 51.

The operation of the absolute address system program start signal reproducing apparatus of the present embodiment configured as described above will be described below.

If you want to show the beginning of a program, use SW52 to specify the program number. At this time, since the absolute address is displayed, the program number at the current tape position is irrelevant, and the number indicating the program number from the beginning may be directly input. The cue mode setting means 54 sets the number according to the input of SW52, and after setting
When SW53 is pressed, the mode is changed to the cue mode and the travel control means 56
The program number information set in and the number indicating the cue mode are sent. The set number is displayed on the display unit 55.
When the traveling control means 56 receives the signal indicating the cue mode, the traveling control means 56 compares the set program number information with the detected program number information sent from the program number detecting means 51, and the winding reel motor driving means. 39 and supply reel motor drive means 40
The tape 19 is fast forwarded or rewound. At the beginning of the first cueing, the program number detecting means 51
Since there is no detected program number information from the tape, the tape is rewound, and when the tape start end sensor 57 detects the tape start end, it is set to the fast-forward state and the cue signal recorded on the tape is searched. When the program number is detected by the program number detecting means 51, if the detected program number is smaller than the set program number, it is fast-forwarded, if it is larger, it is rewound, and if they match, the cueing is completed, and the VTR is stopped or the playback mode. To The detected program number information is the running control means.
The current program number is corrected via 56 and displayed on the display unit 55. If the program number, which is the rewinding method, is detected, it means that the program number has passed through the program of the number and becomes the previous program, so the detected number is minus 1. It means to let. The program number detecting means 51 discriminates the duty of the control pulse reproduced by the AC head 8 in the tape running system shown in FIG. 8, detects the cue signal described above, and reads the program number code. The method of determining the duty of the control pulse is that the tape speed during fast forward / rewind is not constant, but the tape length during one cycle of the control pulse is extremely short, so the tape speed during one cycle can be made almost constant. The time of the H level period and the L level period of the signal shown in FIG. 3D is detected respectively, and from the two results, 1 information or 0 is detected.
It is a method of reading information. It should be noted that since the tape traveling direction is opposite between the fast-forwarding and the rewinding, the method of discriminating 1 information and 0 information is different, but the traveling control means 56
The method is changed by the signal sent from the tape which indicates the tape running direction. In the method of detecting the program number from the information read from the control duty, the cue signal shown in FIG. 4 is recorded at the beginning of the program. Therefore, when the information read from the control duty is 0111110, this is the head code (B ), And the subsequent 8 bits are detected as the program number code (C). When in this case is also fast-forward rewind, detection of the head code (B) is the same, but the program number code (C) when the order of detected fast forward to A ₀ from A _7, when rewinding from A ₀ since to a ₇ to detect the program number and the correction. If the program number code has the same value twice in a row so as not to be detected by mistake, the code may be validated. Incidentally, the program number detecting means 51, the cue mode setting means 54, the traveling control means 56
If it is configured by using a one-chip microcomputer, the configuration is very simple and each processing can be made very easily.

FIG. 2 is a block diagram of essential parts showing a program cue signal reproducing apparatus of each station stop system which is another embodiment of the present invention. In the figure, 2 is a take-up reel, 3 is a supply reel, 8 is an AC head, 19 is a tape, 32 is a take-up reel motor, 33 is a supply reel motor, 39 is a take-up reel motor driving means, and 40 is a supply reel. The motor driving means has the same structure as that shown in FIG. Reference numeral 70 is an amplification circuit for amplifying the control pulse reproduced by the AC head 8. Reference numeral 71 is a waveform shaping circuit for producing a control data waveform shown in FIG. 3D from the control pulse amplified by the amplification circuit 70. Comprised of two comparators for detecting a positive edge and a negative edge and a BS flip-flop, 72 is an integrating circuit for integrating the waveform created by the waveform shaping circuit 71, which is composed of, for example, a resistor and a capacitor, and 73 is a reference The voltage generating circuit is composed of, for example, two resistance division voltages, and 74 is an integrating circuit 72.
Of the output voltage of the reference voltage creating circuit 73 and a comparison circuit for comparing the output voltage of the reference voltage generating circuit 73, 75 for starting the cue in the forward direction of the tape running, 76 for starting the cue in the reverse direction of the tape running
SW and 77 are running control means for fast-forwarding or rewinding the tape 19 when SW75 or SW76 is input.

The operation of the station stop system program cue signal reproducing apparatus of the present embodiment configured as described above will be described below.

First, if you want to show the beginning of the program at the current tape position, SW
Press 76 to start cueing in the rewind direction. If you want to find the beginning of the next program at the current tape position, press SW75 to start the beginning of the fast forward direction. Travel control means 77
When SW75 or SW76 is pressed, the tape 19 is brought into the fast-forwarding or rewinding state via the take-up reel motor drive means 39, the supply reel motor drive means 40, the take-up reel motor 32, and the supply reel motor 33. When the tape 19 is in the fast-forward or rewind state, the control pulse recorded on the tape 19 is reproduced by the AC head 8 and the amplifier circuit 70,
A voltage proportional to the duty of the control pulse is input to the comparison circuit 74 via the waveform shaping circuit 71 and the integration circuit 72. The output voltage of the integrating circuit 72 becomes a high voltage when fast-forwarding or rewinding the tape position where information of 1, that is, a state where the duty of the control pulse exceeds 50% is continuously recorded, and becomes 0, The voltage is low when fast-forwarding or rewinding the tape position where information is continuous. The output voltage of the reference voltage generating circuit 73 is an integrating circuit 72 when the duty of the control pulse is exactly 50%.
If it is made equal to the output voltage of the above, it can be detected from the output signal of the comparison circuit 74 that the tape position where the information of 1 is continuous is moved to the tape position where the information of 0 is continuous. As a result, the cue signal (E) for stopping each station shown in FIG. 4 can be detected, and when the comparison circuit 74 detects this signal, the running control means 77 stops or plays the tape 19 and finishes the cueing of the program. To do. Note that the station stop cue signal (E) shown in FIG. 4 has a form in which 0 information is continuous for 10 bits, but what if the comparison circuit 74 changes from 1 information to 0 information? Bid is okay. The comparison circuit 74 is 0
If it is configured to detect that the information of 1 is even 1 bit, it will be detected by the absolute address cue signal (D) shown in FIG. 4, but this absolute address cue signal (D) is recorded. Since there is a short distance between the tape position of the actual program and the tape position of the head of the real program, there is no problem. When the absolute address cue signal (D) is formed by the block code (A) that is repeated tens of times, the number of consecutive 0s in the absolute address cue signal (D) is limited. Therefore, it suffices that the number of bits of the cue signal for each station stop (E) is increased so as to give a difference, and the comparison circuit 74 can be configured to detect only the cue signal for each station stop (E).

The relative address type program cue signal reproducing device is provided with a program number setting means and a means for counting the number of station stop cue signals (E) in the station ceasing program cue signal reproducing device shown in FIG. Since it may be provided, description thereof is omitted here.

As described above, the cue signal is made into two signal groups, a cue signal group for stopping at each station and a cue signal group for absolute addresses. Can be searched, and at the beginning of the program at each station, it can be constructed with a very simple circuit without using a microcomputer.

In this embodiment, the VTR control pulse is used, but an audio signal or the like may be used instead of the control pulse.

EFFECTS OF THE INVENTION As described above, according to the present invention, since the program cueing is performed by using the duty of the control pulse of the VTR, the video signal is not adversely affected, and the recording and reproduction of the cueing signal can be performed. Therefore, it can be configured without adding a special dedicated head. In addition, since a signal that is a combination of an absolute address cue signal that directly records the program number and a station cue signal that can detect the duty change of the control pulse with an integrator circuit with a simple configuration is used as the cue signal,
When using the absolute address method to cue a program, it is easy to set the desired program number, and it is not necessary to go to the beginning of the tape and count the cue signal without malfunctioning. When performing the program cueing at each station stop system, it is only necessary to detect the duty change of the control pulse without reading the program number recorded in the data, so it is possible to configure with a simple circuit. You can

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of essential parts showing an absolute address system program cue signal reproducing device according to an embodiment of the present invention, and FIG. 2 is a stop at each station according to another embodiment of the present invention. FIG. 3 is a block diagram of a main part of a system program cue signal reproducing apparatus, FIG. 3 is a waveform diagram of control pulses in the embodiment of the present invention, and FIG. 4 is a code configuration diagram of a cue signal for handling the embodiment of the present invention. FIG. 5 is a block diagram of a main part showing a configuration example of a program cue signal recording apparatus which is effective in combination with the present invention. FIG. 6 is a flowchart showing a part of processing operation of a microcomputer.
FIG. 8 is a schematic plan view of the tape traveling system during recording traveling, FIG. 8 is a schematic plan view of the tape traveling system during fast forward and rewind, and FIG.
FIG. 1 is a block diagram of essential parts showing a configuration example of a conventional program cueing signal recording device, and FIG. 10 is a block diagram of essential parts showing a configuration example of a conventional program cueing signal reproducing device. 2 ... Take-up reel, 3 ... Supply reel, 8 ... AC head, 19 ... Tape, 32 ... Take-up reel motor, 33 ... Supply reel motor, 39 ... Take-up reel motor drive means, 40
...... Supply reel motor drive means, 51 …… Program number detection means, 52,53 …… SW, 54 …… Cue mode setting means, 55 ・ ・ ・
Display unit, 56 traveling control means, 57 tape start sensor, 70 amplification circuit, 71 waveform shaping circuit, 72 integration circuit, 73 reference voltage generation circuit, 74 comparison circuit , 7
5,76 ... SW, 77 ... Run control means, 60 ... Run control means, 61 ... SW, 62 ... Program number setting means, 63 ... Program cue signal coding means, 64 ... Record signal Creating means, 65 ...
… Driver, 66… Microcomputer.

Claims (2)

[Claims] 1. A first traveling control means for controlling traveling of a recording medium, a head for recording a signal on the recording medium, a program number setting means for setting a program number, and binary numbers of information 0 and information 1. And is set by the program number setting means and a header having a structure in which at least 1 bit of the information 0 signal is added before and after the signal 1 (1 ≧ 5) bits of the information 1 A first code signal group formed by repeating a program number code that is a BCD code of m (where m ≧ 1) digits n (where n ≧ 1) and information 0 is k (where k ≧ 1). 1) Program cueing signal coding means for coding a combination of a second code signal group of bits as a cueing signal, and for outputting a recording signal to the head when the recording medium is running in a recording mode. And The cue signal coded by the program cue signal coding means is sequentially modulated from the most significant bit or the least significant bit to the first state when the information is 0, and is output when the information is 1. In the recording mode other than the one in which the duty of the signal is modulated and output in the second state and the cueing signal is recorded, the output signal outputs the signal in the state other than the first state, or outputs no signal. A device for reproducing information recorded by a program cueing signal recording device comprising a recording signal creating means for outputting, a reproducing head for reproducing the cueing signal when the recording medium is in a fast-forward or rewind state, A program number detecting means for reading the program number code from the signal reproduced by the reproducing head, and a cue mode for starting a program cue search by setting a program number to cue. A program to be cued from the cued mode setting means by rewinding or fast-forwarding the recording medium when a signal indicating that a program cuing search is being performed is input from the cuing mode setting means. The position of the recording medium on which the program number to be searched for by fast-forwarding or rewinding the recording medium is recorded by comparing the signal indicating the number with the signal indicating the program number from the program number detecting means. And a second running control means for outputting a signal indicating the running direction of the recording medium to the program number detecting means, and a program cue signal reproducing device. 2. A traveling control means for controlling traveling of a recording medium, a head for recording a signal on the recording medium, a program number setting means for setting a program number, and a binary number of information 0 and information 1. And the signal 1 of information 1 (however,
A header having a structure in which at least 1 bit of information 0 is added before and after l ≧ 5) bits and the program number set by the program number setting means is a BCD code of m (where m ≧ 1) digits The first code signal group formed by repeating the program number code set to n (where n ≧ 1) times and the second code signal group in which the information 0 is k (where k ≧ 1) bits are combined. And a program cueing signal coding means for coding as a cueing signal, which outputs a recording signal to the head when the recording medium is running in a recording mode, and is coded by the program cueing signal coding means. The converted cueing signal is sequentially modulated from the most significant bit or the least significant bit when the information is 0, the duty of the output signal is modulated to the first state, and when the information is 1, the duty of the output signal is changed to the second state. And a recording signal generating means for outputting a signal having a duty other than that in the first state or outputting no signal in a recording mode other than recording the cueing signal. A device for reproducing information recorded by a program cueing signal recording device, comprising a reproducing head for reproducing the cueing signal when the recording medium is in a fast-forwarding or rewinding state, and a signal reproduced by the reproducing head. An amplification circuit for amplifying, a waveform shaping circuit for obtaining a square wave from positive and negative edges of the output signal of the amplification circuit, an integration circuit for integrating the square wave obtained by the waveform shaping circuit, and a reference voltage for obtaining a reference voltage. Creating circuit,
A comparison circuit for comparing the output voltage of the integrator circuit with a reference voltage obtained from the reference voltage generation circuit, and a program cueing mode is set. When the program cueing mode is set, the recording medium is fast forwarded or rewound. A program cueing signal reproducing device comprising a running control means for ending the program cueing when the output of the comparison circuit becomes an output in which the signal of the information 0 is detected.