JP3536854B2 - Digital signal recording device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital recording / reproducing apparatus (digital VTR) for signals such as video and audio.

[0002]

2. Description of the Related Art Conventionally,
Japanese Patent Application Laid-Open No. 3-217179 discloses a digital VTR in which data relating to the recorded contents of a tape is recorded at the beginning of the tape. The arrangement of the recording format on the magnetic tape and the recording area of each recording signal on the entire magnetic tape according to the conventional example will be described below with reference to FIGS.

FIG. 1 shows the arrangement of recording signals in one track on a magnetic tape. The recording signal is divided into video data, audio data, servo pilot signals, and subcode areas in order from the track start part. The subcode area is further divided into a data detection synchronization area (SYNC), a track number and other areas (ID), a figure and character data and other areas (additional data), and an error correction code recording area (parity). Have been.

FIG. 2 shows the arrangement of recording areas for each recording signal on the entire tape, which are (P1), (P2), and (P1).
n) is a recording area for n video and audio programs,
(A1), (A2) to (An) are recording areas for the additional data of the n programs. The tape has an area for recording video data and audio data in the width direction (S1).
And an area for recording additional data (S2), and is divided into an area (A) for collecting and recording additional data of each program in the length direction and a normal recording area other than the area. At the time of reproduction, information of recorded contents is obtained by obtaining additional data from the area (A).

Similarly, as a conventional embodiment for recording data relating to the recorded contents of a tape at the beginning of the tape, there is the following in a VHS analog VTR. That is, one screen of the reproduced video signal is converted into digital data by an A / D converter and is stored in a memory.
Each screen is reduced to fit the screen, and then displayed as a multi-screen, which is inserted and recorded at the beginning of the tape. At the time of reproduction, the screen on which the insert recording is performed is reproduced to obtain information of the recorded contents.

Further, a method easily recalled from the above two conventional examples, that is, a part of the video data and audio data of each program recorded on the tape in the digital VTR is recorded at the beginning of the tape with the recording format of each program. There is also a method of recording in the same format.

In the case of Japanese Patent Application Laid-Open No. Hei 3-217179, only the additional data can be reproduced at the start of the tape because of the configuration described above, and the video data and audio data recorded on most of the tape are completely lost. It is a problem that it is not possible to confirm the data, and in order to perform these confirmations, it is necessary to play the tape after running the tape to the recording position of the data based on the additional data. Met. Also, in the conventional VHS system, the video signal can be confirmed at the tape start portion, but when the number of screens increases, the screen becomes a reduced screen, and it is difficult to see and the sound cannot be confirmed.

In the method of recording a part of the data of each program in the digital VTR in the same format as the recording format of each program at the beginning of the tape, there is the following problem. That is, in general, the content of a video signal can be sufficiently discriminated in one frame or one field, while the audio signal has the same time as the video signal.
That is, the content cannot be determined at all in 1/30 seconds or 1/60 seconds, and it takes at least several seconds to be able to determine the content. It is also desirable that the data at the tape start end can be checked in as short a time as possible. For this reason, if the recording time is set under the condition that the video signal can be confirmed, the audio signal cannot be confirmed at all. If the recording time is set under the condition that the audio signal can be confirmed, most video signals will not be able to confirm the content. Is also a problem that recording is useless.

Hereinafter, a conventional magnetic recording / reproducing apparatus will be described.
The configuration will be described with reference to FIG. In recent years, the number and contents of programs recorded on a magnetic recording / reproducing apparatus have to be written on a label or the like or stored by a user. Hereinafter, a method of searching for a program in a conventional magnetic recording / reproducing apparatus will be described. First, the operation at the time of recording will be described. At the time of recording, an index signal is recorded at the beginning of a program to be recorded, particularly at a portion to be searched for during reproduction. The index signal is automatically recorded at the start of recording, but can be arbitrarily recorded.

In this case, the recording of the index signal is performed by the user inputting the index signal recording information through the operation unit 51. Operation information from the operation unit 51 is input to the control unit 52, and the control unit 52
Control. The CTL signal processing circuit 53 records an index signal having a different duty ratio of a CTL signal (a control signal at the beginning of each program) for several seconds. In this way, one tape can be divided into a plurality of programs by the index signal.

Next, a search method will be described. The user performs a search by operating a forward / reverse index search key of the operation unit 51. For example, when the index search key in the forward direction is pressed, input information is sent from the operation unit 51 to the control unit 52, and the control unit 52 controls the traveling mechanism unit 55 by the motor drive servo circuit 54 to fast-forward the tape. At this time, the reproduced CTL signal is input to the index discriminating circuit 56, and when an index signal is found, an index discovery signal is sent to the control unit 52. When receiving the index discovery signal, the control unit 52 controls the motor drive servo circuit 54 and the reproduction circuit 58 as follows.

The traveling mechanism 55 stops the fast-forward by the motor drive servo circuit 54 and rewinds to the portion where the index signal is recorded, and then enters the reproduction mode. When the reproduction mode is set, the reproduction circuit 58 amplifies the signal reproduced from the head, returns to the original video signal, and outputs it. This is T
The search is completed by displaying the image on the V receiver 64. Here, if the user presses, for example, the index search key twice from the operation unit 51, the search can be performed until the index signal is found twice. The same applies to the index search in the reverse direction, and the search is performed in the rewind direction.

[0013] In addition to the above, the following retrieval methods are known. One is a method in which the duty ratio of the CTL signal is finely controlled to be address information, the position of each program is represented as an absolute address, and the program can be directly searched by the user by inputting the address information at the time of search. The other is to control the duty ratio of the CTL signal finely and use it as linear time counter information.
In this method, the recording time is recorded on a tape, and at the time of searching, the program can be searched directly by the user inputting the counter value at the beginning of the program.

Since the conventional magnetic recording / reproducing apparatus is configured as described above, when a user searches for a program to be viewed, the contents of the magnetic tape are stored in advance or the contents of the program are recorded on a label or the like. In addition, there is a problem that an operation of performing a search while viewing the information is required, and a burden on a user is large. Also, if the program is configured to directly select a program, C
In order to finely control the duty ratio of the TL signal, encoders and decoders for address information and linear time counter information are required, resulting in a problem that the circuit scale becomes large and the price is high.

In recent years, devices for recording and reproducing image signals, such as video tape recorders, have become widespread in homes and broadcasting stations, and at the same time, cassette tapes, which are recording media, are widely used in ordinary homes. Therefore, there is a need for a simple and convenient method and apparatus capable of checking and searching the recorded contents of a cassette tape. Conventionally, there is a magnetic recording / reproducing apparatus disclosed in Japanese Patent Application Laid-Open No. 63-4478 as an apparatus intended to create a multi-screen from an image signal and check and search recorded contents. It is explained as follows.

FIG. 4 is a block diagram showing the conventional magnetic recording / reproducing apparatus. First, at the start of recording during recording, particularly at the tape position where the tape position is to be detected during reproduction, the address is set by the operation unit 71 and the driving switch is pressed. The control unit 72 inputs switch information and address information from the operation unit 71, and outputs converted data according to the address information to the control recording signal processing circuit 74. The control recording signal processing circuit 74 records the control recording signal on the magnetic tape according to the conversion data from the control unit 72.

Next, at the time of reproduction, the high-speed search button is pressed by the operation unit 71. The control unit 72 inputs the button information from the operation unit 71, and outputs a command to the motor drive servo circuit 76 to bring the traveling mechanism unit 77 into a high-speed traveling state. The traveling mechanism 77 starts high-speed traveling in the sub-loading state. Even during high-speed running, the control signal duty determination circuit 73 performs amplification waveform shaping on the reproduced control signal to determine the duty ratio, and if there is address information, outputs the address information recorded on the magnetic tape to the control unit 72.

When the control unit 72 inputs the address information, the control unit 72 executes a motor drive servo circuit to bring the traveling mechanism unit 77 into a reproducing state.
The command is output to 76 and the reproducing circuit 75. When the traveling mechanism 77 is in the reproducing state, the motor drive servo circuit 76 controls motors such as a capstan motor and a cylinder motor according to the reproducing control signal. The reproduction circuit 75 amplifies the signal reproduced from the head, restores the original video signal, and outputs it to the memory circuit 79. After the image information is output, the control unit 72 outputs a command to the memory control circuit 80 to store the image information and the address information in the memory circuit 79. The memory control circuit 80 controls the memory circuit 79 so that the image information and the address information are thinned out and stored in a part of the memory circuit 79 in accordance with a command from the control unit 72. After regenerating for a certain period of time, the high-speed running state is set again.

The above operation is repeated several times, and the image information of the position where the address information of several places is recorded is stored in the memory circuit 79. One field or one frame memory circuit 79
The control unit 72 detects whether the data is stored in the entirety or whether all of the magnetic tape has been completed, and upon detection, outputs a command to the motor drive servo circuit 76 to return to the beginning of the magnetic tape. When the magnetic tape reaches the start end, the traveling mechanism 77 is brought into the recording state.

A recording signal changeover switch 84 connects the memory circuit 79 and the recording circuit 82 to record the contents stored in the memory circuit 79 on the magnetic tape.
At 83, the recording circuit 82 is connected to the head for recording. Next, when searching for a tape position, the start end of the magnetic tape is displayed on the TV receiver 78 at the same time that the reproduced video signal is projected and stored in the memory, and the next tape position search address is set based on the image information and the address information to run at high speed.

When the set address becomes equal to the address information recorded on the magnetic tape, the control section 72 switches to a reproducing state.
When the playback state is reached, the playback signal changeover switch 81 is switched to allow the video signal output from the playback circuit 75 to be transmitted to the TV receiver 78.
Projected on. When the tape position search is to be performed again, the reproduction signal changeover switch 81 is switched to display the video signal from the memory circuit 79 on the TV receiver 78 to set the address of the tape position search and to run at high speed. The above operation is performed to search for a tape position.

The above-described conventional magnetic recording / reproducing apparatus reproduces an image signal at a place where an index signal is additionally recorded by manual operation on a recorded magnetic tape, thereby producing a multi-screen. In order to make the index signal, it is necessary for the user of the device to record the index signal individually while checking the playback of the video signal in advance.
The work was cumbersome and time consuming.

Also, in another known method, that is, a method of automatically recording an index at the start of recording, and then sequentially reproducing a place where the index is present to form a multi-screen, when a reserved recording is performed, Since a commercial broadcast is usually included before and after the broadcast, most of the places where the index is recorded are commercial broadcasts, so that most of the multi-screen becomes a commercial broadcast screen and cannot be used for search.

As a method of displaying and searching the recorded contents of the cassette tape, an image at an index position of a medium on which an image signal is recorded is stored in a memory, and the image of the memory is displayed on a monitor screen to perform a search. Some are used,
An example is disclosed in JP-A-63-102092 as follows.

FIG. 5 is a block diagram showing the conventional magnetic recording / reproducing apparatus. First, at the tape position where you want to detect the tape position at the start of recording during recording or especially during playback,
Press the 101 cue signal input switch. Operation unit 101
The control unit 102 receives the switch information from the control unit 102 and outputs the start signal to the control recording signal processing circuit 104. The control recording signal processing circuit 104 records a control recording signal having a changed duty ratio on a magnetic tape in accordance with the command.

Next, at the time of reproduction, the high-speed search button is pressed on the operation unit 101. At that time, the counter 112 is reset. The control unit 102 receives the switch information from the operation unit 101 and outputs a command to the motor drive servo circuit 106 to bring the traveling mechanism 107 into a high-speed traveling state. Travel mechanism 107
Starts high-speed running in the sub-loading state. Even during high-speed running, the control signal duty discriminating circuit 103 shapes the reproduced control signal by amplifying the waveform and discriminates the duty ratio. When the cue signal is detected, the control unit 102 outputs the presence / absence of the cue signal.

The control unit 102 inputs the presence / absence of a cue signal, and if there is a cue signal, first stores the tape count value from the counter 112 at that time, and sets a motor drive servo in order to put the traveling mechanism unit 107 in a reproduction state. A command is output to the circuit 106 and the reproduction circuit 105. When the traveling mechanism 107 is in the reproduction state, the reproduction signal changeover switch 111 is set to the reproduction circuit 105.
The motor drive servo circuit 106 controls a motor such as a capstan motor and a cylinder motor in accordance with a reproduction control signal.

The reproduction circuit 105 amplifies the signal reproduced from the head, restores the original video signal, and outputs it to the memory circuit 109. After the image information is output, the control unit 102 instructs the memory control circuit 110 to output the image information and the address information to the memory circuit 109. The memory control circuit 110 is a control unit
The memory circuit 109 is controlled so as to store a reduced image of a large screen at the time of reproduction in a part of the memory circuit 109 in accordance with the instruction of 102.

FIG. 6 is a diagram showing a display pattern on a television receiver. The upper left part ADR. 1 is stored in a part of the memory circuit 109 corresponding to 1. After the writing to the memory circuit 109 is completed, the high-speed running state is set again, and the reproduction signal changeover switch 111 is connected to the memory circuit 109 side.

The above operation is repeated several times, and the reduced image of the large screen at the position where the cue information is recorded is reproduced and sequentially stored in the N divided part of the memory circuit 109. At the same time, the control unit 102 stores the tape count value from the counter 112 at that time. The control unit 10 determines whether the data is stored in the entire memory circuit 109 or whether the entire magnetic tape has been completed.
2 is detected, and if detected, outputs a command to the motor drive servo circuit 106 to stop the magnetic tape. At this time, the reproduction signal changeover switch 111 is connected to the memory circuit 109.
The video signal from the memory circuit 109 is displayed on the television receiver 108 as shown in FIG.

Next, when searching for the tape position, the switch of the ADR number for the next tape position search from the video from the memory circuit 109 displayed on the television receiver 108 is set to the operation unit 10.
Press 1 The tape position is searched based on the switch information of the operation unit 101 and the tape count value stored in the control unit 102. When the reproducing state is entered, the switch 111 is switched to display the signal from the reproducing circuit on the television receiver 108. When the tape position search is to be performed again, the switch 111 is switched to display the video signal as shown in FIG. 6 from the memory circuit 109 on the television receiver 108, read the ADR number shown on the screen, and send this number to the operation unit 101. Perform a search by setting it against.

Since the above-described conventional magnetic recording / reproducing apparatus is configured as described above, in order to actually perform a search, the operation of reading a number having an address of about 1 to 5 digits from the screen and operating the same. The work of inputting into the means is necessary and troublesome. When the number of multi-screens increases, for example, when the number of sub-screens is 16, at least two digits must be read from the screen and input from the operation unit 101, which is troublesome. Because the number of digits increases, there are many invisible parts of the image hidden by the numbers, making it difficult to see, which is not convenient.

As another known example, there is a method of using a plurality of operation buttons corresponding one-to-one to the arrangement of sub-screens as a method of designating a search destination on a multi-screen. When there are many buttons, there is a problem that the number of buttons increases and it becomes difficult to correspond to the screen.

One object of the present invention is to efficiently record video data and audio data representing the characteristics of each program together with additional data at the start of the tape even if long-time recording is performed. It is another object of the present invention to provide a recording / reproducing apparatus capable of realizing a table of contents using so-called images and sounds.

Another object of the present invention is to provide a recording / reproducing apparatus having a small circuit scale and capable of directly selecting a program. Still another object of the present invention is to automatically create a multi-screen for both a program being recorded and a program already recorded, including scheduled recording, without the user's effort and time, and confirm the contents. An object of the present invention is to provide a recording / reproducing apparatus capable of performing a search.

Still another object of the present invention is to perform a simple button operation while looking at characters and symbols superimposed on the screen of the search information, thereby making it possible to correspond to the background image almost without taking your eyes off the TV screen. It is an object of the present invention to provide a recording / reproducing apparatus capable of easily searching and reproducing a recording unit.

[0037]

Means for Solving the Problems A recording apparatus of the present invention, multiple
Recording device that records a number of programs on a recording medium
Each program is distinguished by the index signal
To select one of the programs
Means for recording a list display screen of
The screen is displayed on the screen a predetermined time after the index signal.
It has a scheduled recording function, after the end of the scheduled recording
After operating the means for recording the list display screen,
The source is configured to be turned off. Also multiple
Recording apparatus for recording the program of the present invention on a recording medium,
Each of the programs is distinguished by an index signal.
To select one of the programs
Means for recording the browsing display screen, and
The above list is displayed according to the image when the
And / or the audio mode is predetermined
The index signal changes when the sound mode changes to
It is configured to be provided with a reservation recording function,
After the recording is completed, the means for recording the list display screen is activated.
The power is turned off after the
You. In addition, recording a plurality of programs on a recording medium
In the apparatus, each of the programs is converted to an index signal.
Therefore, one of each program is selected.
Means for recording a list display screen for selecting
If the temporal correlation of the signal is less than the predetermined value,
A list display screen is configured and / or the image signal
When the temporal correlation of the index is equal to or less than a predetermined value,
Signal, and has a scheduled recording function.
After the scheduled recording is completed, the list display screen is recorded.
The power supply is turned off after operating the means.
It is. Also, a plurality of programs can be recorded on a recording medium.
In the recording device, the programs are indexed.
Signals, one of each program
A means for recording a list display screen for selecting one
Time and / or recorded program
And divide the recording time of the
The list display screen is configured by the images for each time period,
And / or the time for performing the scheduled recording and / or
Set the recording time of the recorded program to the number of screens listed above.
The index signal is added at each time equally divided by the number below.
It is configured to be provided. Also, multiple programs
A recording device for recording a program on a recording medium,
Each program is distinguished by the index signal.
List to select one of the programs
Means for recording the display screen,
And / or according to the recording time of the recorded program.
Change the number of representative screens of each program displayed on the display screen.
It is configured to obtain.

[0038]

According to the recording apparatus of the present invention , when a plurality of scheduled recordings are recorded on a cassette tape and an index is recorded at a recording start portion of the reserved recording, the index is fixed from the index when reproducing the multi-screen. By reproducing the tape position after the time and storing it in the memory, a multi-screen that does not include the first commercial image of the broadcast can be created. For this reason, a multi-screen can be created without performing indexing work, thereby facilitating organization and search of cassette tapes. Also, when a relatively long-time broadcast program such as a movie is reserved and recorded, several commercial broadcasts are inserted in the middle of the program, and the audio modes of the movie broadcast and the commercial broadcast are, for example, bilateral audio and stereo audio, respectively. In this case, the index signal is recorded when the broadcast is changed to a predetermined audio mode, that is, in this example, when the broadcast is changed to a bilingual mode. By making it, it is possible to accurately make the image of the start position of the program a multi-screen. It is also possible to record an index and create a multi-screen in parallel with the scheduled recording, and if the data in the image memory is retained, the multi-screen can be immediately displayed from the memory later, which is convenient. Also,
In this case, since the multi-screen is created from the signal to be recorded, there is an advantage that the image signal is less deteriorated and the screen is easier to see than when the multi-screen is created from the reproduction signal. In addition, when performing recording or reproduction, the time correlation of the image signal is obtained, and if this value is smaller than a predetermined value, an index is recorded as a place where the content of the signal has changed greatly and / or the image signal is written on a multi-screen. Thus, a multi-screen can be created from an image of a transition point of a movie scene or a connection point of a cut taken by a camera, so that it is easy to accurately grasp and edit the contents. Also, when recording scheduled broadcast programs ,
When searching for a recorded program, the entire number of screens of a predetermined multi-screen is used for the search. For example, if the number of multi-screens is 12 and the recording time is 1 hour, 1 hour is divided into 12 equal parts. By writing to the multi-screen every 5 minutes, the program and / or already recorded
Since the contents of the recording program are displayed using all of the reduced screens of the multi-screen, the number of screens is the largest, which is easy to understand and easy to search. In addition, when writing to a multi-screen at regular intervals from a program of a pre-recorded broadcast program or a previously recorded program, the number of multi-screens is changed according to the recording time. If the recording time is long, the number of multi-screens can be prevented from becoming insufficient when the recording time is short, and if the recording time is short, the number of multi-screens can be reduced. Easy and easy to search. Change
In addition, in addition to the above, conventionally, after a scheduled recording is performed, a multi-screen is created from a recorded program by a predetermined means in a vacant time when the power is turned off, and if the contents of the memory are retained, it will be later. When using the device, you can use multiple screens immediately. In particular, the time saving effect is great when a multi-screen is created by combining the recording of the scheduled recording and the previous recording, or when the number of screens is large.

[0039]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing the embodiments. Embodiment 1 FIG. Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG.
FIG. 9 is a circuit block diagram of the device of the present invention.
Numeral 11 shows the relationship between the status name, the tape format, and the connection of the switches in the apparatus shown in FIGS.

When recording in the first format,
The analog video signal input from the input terminal 2 in the recording system 1 shown in FIGS. 7 to 9 is converted into a digital signal by the A / D converter 4 and the data amount is reduced by the high-efficiency encoding circuit 3. The error correction code used by the reproduction system 20 is added by the error correction code adding circuit 5 through the switch 45. The analog audio signal input from the input terminal 6 is converted into a digital signal by an A / D converter 8, passed through a switch 46, and added with an error correction code by an error correction code adding circuit 7.

The error correction code adding circuit 9 has additional data,
That is, an analog signal input from the input terminal 10 becomes graphic data converted into a binary image by the binarization circuit 12, a signal whose data amount is reduced by the data compression circuit 13,
At the same time as a character code signal input from the, a signal such as a time code signal input from the input terminal 16, and a signal indicating the format output from the format detection signal generation circuit 38 at the instruction from the format switching circuit 36, A control signal from the changeover switch 11 is sent. Here, the changeover switch 11 selects whether to use data from the data compression circuit 13 and the input terminal 14 or not.

The format switching circuit 36 is a circuit for switching the recording format between the first format and the second format. The format switching circuit 36 switches the data sequence generated by the multiplexer 15 according to the format, and simultaneously generates the format detection signal. Instruct circuit 38 to generate a signal indicating the format. An error correction code is added to these data in an error correction code addition circuit 9, and the output thereof is input to a multiplexer 15 together with an output signal from the error correction code addition circuit 5 and an output signal from the error correction code addition circuit 7. A recording sequence of video data, audio data, and additional data is generated so as to conform to the track format described above, and is converted into a pattern signal to be recorded on a tape by a recording encoding circuit 17, which is amplified by a recording amplifier 19, and The data is recorded on the magnetic tape T by the head 21 via the reproduction switch 18. As shown in FIGS. 10 and 11,
The above state is represented as M1, and the recording format is F1.
1. Both the switch 45 and the switch 46 are connected to the terminal c and the terminal a. The states of the switches 47, 48, 49 and 50 are irrelevant.

In the reproducing mode, in FIG. 7 to FIG. 9, data recorded on the magnetic tape T is first read by the head 21 and input to the head amplifier 25 in the reproducing system 20 via the recording / reproducing switch 18 to be amplified. , Is inputted to a data decoding circuit 27 and is decoded into a digital signal.
In 29, the jitter generated by the recording / reproduction on the tape is removed, and the data is converted into byte-synchronized digital data. The digital data is sent to the video signal error correction circuit 31, the audio signal error correction circuit 33, and the subcode signal error correction circuit 35. Each is entered.

The video signal error correction circuit 31 corrects the error of the video data, restores the signal before compression by the data expansion circuit 32 via the switch 47, and inputs the signal to the superimpose circuit 34. Audio signal error correction circuit 33
In, the error correction of the audio data is performed, and the switch 48
, And is converted into an audio signal by the D / A converter 22 and sent to the output terminal 26.

The sub-code signal error correction circuit 35 corrects the error of the sub-code signal. The additional data is sent to the graphic data decompression circuit 39 or the character generation circuit 41 and the recorded additional data is restored. Will be sent.
The switch 43 is opened and closed by a signal from the switch control signal generation circuit 37, and the superimposition circuit 34 switches whether or not to add the additional signal to the video signal. The output of the superimpose circuit 34 is converted into a video signal by the D / A converter 23 and sent to the output terminal 24.

A signal indicating the reproduced format is sent from the sub-code signal error correction circuit 35 to the format detection circuit 28, and whether the recording on the magnetic tape T is performed in the first format or in the second format is performed. Is sent to the TBC circuit 29, and the byte synchronization of the digital data is automatically switched according to the format. As shown in FIGS. 10 and 11, the above state is represented as M2, the tape format is automatically switched between F1 and F2, and both the switch 47 and the switch 48 are connected to the terminal c and the terminal a. The states of the switches 45, 46, 49, and 50 are irrelevant.

When writing the reproduced video signal and the reproduced audio signal to the memory, the video data output from the video signal error correction circuit 31 is written to the memory 40 via the switch 49 in the reproduction mode shown in FIGS. The audio data output from the audio signal error correction circuit 33 is written to the memory 42 via the switch 50. As shown in FIGS. 10 and 11, the above state is represented by M8, the tape format is automatically switched between F1 and F2, and both the switch 47 and the switch 48 are connected to the terminal c and the terminal a. The terminal c and the terminal b are both connected to the switch 50, and the state of the switches 45 and 46 is irrelevant.

When recording on a tape in the second format, video and audio data written to the memory are read and recorded. However, the following points are different from the ordinary recording mode M1. That is, in FIGS. 7 to 9, the output of the high efficiency encoding circuit 3 is not used, the video data is read from the memory 40, input to the error correction code adding circuit 5 via the switch 45, and the audio signal A The output of the / D converter 8 is not used, and the audio data is read from the memory 42 and input to the error correction code adding circuit 7 via the switch 46. The format switching circuit 36 switches the multiplexer 15 and the format detection signal generating circuit 38 so as to record data in the second format. As shown in FIGS. 10 and 11, the above state is represented by M11, the tape format is F2, and both the switches 45 and 46 are connected to the terminals c and b, and the switches 47, 48, Switch 4
9, and the state of the switch 50 does not matter.

When the video and audio data written to the memory is read and reproduced, the following points are different from the reproduction mode. That is, in FIGS. 7 to 9, the output of the video signal error correction circuit 31 is not used, and the video data is read from the memory 40 and input to the data decompression circuit 32 via the switch 47. The output is not used, and the audio data is read from the memory 42 and input to the D / A converter 22 via the switch 48. As shown in FIGS. 10 and 11, the above state is represented by M14, and the terminals c and b are connected to both the switch 47 and the switch 48 regardless of the tape format. The states of the switches 45, 46, 49 and 50 are irrelevant.

The switch control circuit 44 includes the switch 45,
This is a control circuit for the switches 46, 47, 48, 49 and 50, and connects the terminal c of each switch to either the terminal a or the terminal b according to the state of the device.

FIGS. 10 and 11 show the relationship between the operation mode of the apparatus according to the present embodiment, the state of the switches and the tape format.
In addition to the modes M8, M11 and M14, a mode M3 for writing video data output from the high-efficiency encoding circuit 3 to the memory 40, and a mode M4 for writing audio data output from the audio A / D converter 8 to the memory 42. , A combined mode M5 of M3 and M4, a mode M6 for writing only the reproduced video data to the memory, a mode M7 for writing only the reproduced audio data to the memory, a mode M9 for reading only the video data from the memory and recording on the tape, and a memory for only the audio data There is a mode M10 for reading and recording on a tape, a mode M12 for reading and reproducing only video data in a memory, and a mode M13 for reading and reproducing only audio data in a memory.

FIGS. 12 and 13 show a tape format by the apparatus of this embodiment. FIG. 12A shows a first recording format F1, in which video data, audio data, and servo data are recorded in order from the track start portion. -It is divided into pilot signal and sub-code areas, and the sub-code area is further divided into an area for data detection synchronization (SYNC), an area (ID) such as a track number, an area (graphic data) such as graphics and character data, and an additional area. Recording area (parity) of code for error correction
Is divided into Here, a signal indicating the format F1 is recorded in (ID).

FIG. 12B shows the second recording format F2.
The length of the video data and audio data recording areas is different from that of FIG. 12A, and a signal indicating the format F2 is recorded in (ID). In the second format F2, the ratio of the audio data area to the video data area is set to be larger than that of the first format F1.

Here, when a video signal of one frame is recorded as a characteristic scene of the program, an example of calculating the amount of data of the signal is as follows. The Y, RY, and BY signals are sampled at 13.5 MHz, 6.75 MHz, and 6.75 MHz, respectively.
The data amount when sampling at 8 bits for each z is (13.5M + 6.75M + 6.75M) x 8bit / 30 = 7.20 Mbit

On the other hand, when the audio signal of one channel is sampled at a sampling rate of 48 kHz and 16 bits, the data amount is 48k × 16bit × (1/30) = 25.6 for 1/30 seconds and 5 seconds. kbit 48k × 16bit × 5 = 3.84 Mbit. Considering these numerical values as the data amount, the recording format may be set assuming that the same amount of data can be recorded on the same area of the magnetic tape, and if the ratio of these to the video data is calculated, 7.20: 0.0256 = 281.25: 1 7.20: 3.84 = 1.875: 1.

In the first and second formats, the ratio of the length of the recording area of the video data to the audio data in one track is set to the above numerical value. Here, when the amount of video data is greatly reduced by the high-efficiency encoding circuit 3 or when data is compressed also in the audio system, the ratio of each data amount after applying these is replaced with the above numerical value. It should be applied to

FIG. 13 shows the arrangement of recording areas for recording signals of the entire tape. The tape has an area (A) of the second format F2 in the longitudinal direction and a first format F1 thereafter. Area. At the beginning of (A), there are areas (P1 ') and (A1). (P1') is an area in which a video signal and an audio signal of one scene representing the features of the program (P1) are recorded. A1) is an area in which additional data of characters or graphics corresponding to the program (P1) is recorded. Subsequent areas (Pn '), (An)
The same is true for

Referring to FIG. 13, the case where the area (A) is created by the apparatus of this embodiment will be described. For example, if the first program has been recorded in the area (P1), this is reproduced and the state is set to the mode M8. The video and audio sample data are written to the memory, and insert recording is performed in the M11 state at the start of the tape. At that time, input terminal 10 or input terminal
Input additional data from 14 and record it simultaneously. By applying the above to each program, the area (A) in FIG.
Is recorded.

In the first embodiment, in a VTR capable of recording a long-time signal, a video and audio signal representing each program recorded on the tape from the start of the tape, and confirmation of contents by additional data, Because the search information is obtained, the same great benefits as the table of contents of the book can be obtained.

Embodiment 2 FIG. FIG. 14 shows the configuration of another embodiment of the present invention.
This will be described with reference to FIG. 14, the same parts as those in FIG. 3 are denoted by the same reference numerals. FIG. 15 is an example of a multi-screen display.

The method of dividing one tape into a plurality of programs by an index signal is the same as in the conventional example, and the description is omitted. In this embodiment, first, the beginning of each program on the tape is displayed on a multi-screen. Hereinafter, a method for creating a multi-screen will be described. There are various methods for creating a multi-screen.For example, a search is started from the end of the tape to search for an index signal, the screen at the beginning of the program is reduced by the reproduction circuit 58, and the memory is controlled by the memory control circuit 60. The reduced screen can be stored in the memory 59 by controlling the 59 and repeated until the beginning of the tape. The programs detected at this time are stored in the memory 59 in the order from the end of the tape, and are controlled by the memory control circuit 60 to reverse the order at the point where the start of the tape is detected.

Thus, it is possible to determine the position of each program on the multi-screen from the start of the tape. The multi-screen is recorded, for example, at the beginning of the tape, and the multi-screen can be displayed by reproducing it from the next time. The recording location may be at the beginning or end of the tape, but in reality, most of the programs recorded on the tape start at the beginning of the tape. For example, when only the middle of the tape is recorded Considering that, when a multi-screen is recorded at the end, it is considered that the search time is often longer than that at the start.

Next, the reference point of the tape will be described. The reference point may be a point that exists even when any tape is inserted, for example, the beginning or end of the tape.
In the present embodiment, the starting point is set as the reference point in consideration of the actual recorded contents of the tape as described above. For example, when searching to the beginning of the tape when generating the multi-screen, or when reproducing the multi-screen recorded at the beginning of the tape, the beginning of the tape is detected by the traveling mechanism unit 55, and information is sent to the control unit 52.
52 is now determined to be the reference point for the tape.

Next, the recording operation of the multi-screen will be described. It is the control unit 52 that controls the recording of the multi-screen.
Hereinafter, the control operation of the control unit 52 will be described. The multi-screen stored in the memory 59 is input to the recording circuit 62 by switching the recording switch 61. The recording signal is recorded on the magnetic tape by switching the recording / reproduction switch 57 to the recording side. At this time, the motor drive servo circuit 54 controls the traveling mechanism 55 to control recording from the beginning of the magnetic tape.

Next, the search operation will be described. First, display the multi-screen. Search operation information from the user is input to the control unit 52 from the operation unit 51. The control unit 52 controls the motor drive servo circuit 54, the reproduction circuit 58, and the memory control circuit 60 as follows. The tape is rewound to the beginning by the motor drive servo circuit 54 and reproduced. Playback circuit 58
Transmits this to the memory 59, and the memory 59
Controlled by 60, memorize multi screen. Further, the stored multi-screen is read out from the memory 59, and the TV
It is displayed on the receiver 64.

The user looks at the multi-screen as shown in FIG.
Enter more. The input method may be a number assigned to the reduced screen, or if no number is displayed, the outer frame of the selected reduced screen is specified in a different manner from the others, for example, as shown in program No. 2 in FIG. You may do it.

An example will be described below. For example, it is assumed that program No. 2 has been selected. The selection information is input from the operation unit 51 to the control unit 52, and the control unit 52 enters the index search mode. When the multi screen is displayed, the user is at the start of the tape, which is the reference point. From here, when searching for the program No. 2, it is sufficient to search in the fast-forward direction until the index is found twice. The search method is the same as in the above-described conventional example. In addition, a search can be similarly performed regardless of the program number.

Embodiment 3 FIG. In the second embodiment, when a search is performed, the selected program No. is searched by starting the search from a reference point and counting the reproduced index signals. That is, in order to perform a search, it is necessary to return to the reference point once. In the third embodiment, the control unit 52 determines the number of the program to be reproduced from the reference point of the tape based on the number of detected index signals and the rotation direction of the tape at that time. Thus, once the multi-screen is generated, the program can be located from anywhere on the tape until the tape is taken out, and the program can be caught by the multi-screen any number of times.

An explanation will be given using an example. For example, assume that program No2 has been searched. It is assumed that the user continues to look at the reproduced image and looks halfway through the program No3. At this time, the control unit 52 detects an index signal at the beginning of the program No. 3 during reproduction. The control unit 52 determines that the program has shifted from No. 2 to No. 3 since the index signal is detected when the tape rotates in the forward direction. In addition, program No3
The user performs rewind etc. in the middle of the program N
Suppose that it returned to o1. Since the control unit 52 detects the index signal twice in the reverse rotation, it determines that the program has shifted from No3 to No1. Here the user can
When a search is performed with more multi-screens displayed, for example, if the program No. 4 is selected, the control unit 52 performs the search until the index signal is found three times in the forward direction. As described above, the control unit 52 always determines the position of the program, so that the search can be performed from anywhere on the tape and as many times as necessary.

Embodiment 4 FIG. Hereinafter, a fourth embodiment of the present invention will be described with reference to FIG. 16, the same parts as those in FIGS. 3 and 14 are denoted by the same reference numerals. FIG. 17 shows an example of the contents stored in the linear time counter storage unit 66 according to the fourth embodiment.

The method for generating the multi-screen and the fact that the reference point of the tape is the beginning of the tape are the same as those in the second embodiment, and therefore the description is omitted. In the present embodiment, when a multi-screen is generated, the linear time counter value at the beginning of each program is stored in the linear time counter storage unit 66. At this time, it is important to reset the linear time counter once at the start end which is the reference point of the tape, and then create a multi-screen. As a result, this counter value indicates the recording time from the beginning of the tape.

Hereinafter, the operation of storing the linear time counter value will be described. Multi-screen display operation information from a user is input to the control unit 52 from the operation unit 51. The control unit 52 rewinds the tape of the traveling mechanism unit 55 to the start end by the motor drive servo circuit 54, and the linear time counter display unit 65
Is reset, and a multi-screen is created as in the second embodiment. Here, a counter value when the index signal is detected and the screen at the beginning of the program is reduced is recorded in the linear time counter storage unit 66.

The linear time counter value at the beginning of each program as shown in FIG. 17 is stored in the linear time counter storage section 66 as an example. In this example, the number of programs that can be stored on one tape is seven, but if it is desired to increase the number, it may be changed according to the amount of memory used. In this embodiment, the counter information is stored in the memory. However, the counter information may be recorded at the beginning of the tape simultaneously with the multi-screen, and stored in the linear time counter storage unit 66 when the multi-screen is reproduced.

An existing magnetic recording / reproducing apparatus, DAT
Etc. also performs tape management. This can be dealt with by storing the tape No., the number of programs recorded on the tape, the recording date, and the like as in the addresses 0E and 0F in FIG. In this case, information on the tape number is required for the currently inserted tape itself. As a method for identifying a tape, for example, there is a method of recording tape No. information on a tape, a method of attaching an identification label to a tape and reading it, and the like.

Next, the search operation will be described. In the present embodiment, when displaying the multi-screen, the counter is reset at the same time when the start end which is the reference point of the tape is detected. The method of selecting the program No. to be searched is the same as that of the second embodiment, and the description is omitted. Now, it is assumed that the program No. 2 is selected. The selection information from the operation unit 51 is input to the control unit 52, and the control unit 52 enters the program search mode. The control unit 52 reads the program N from the linear time counter storage unit 66.
The counter value at the beginning of o2 is read. Next, the traveling mechanism 55 is controlled by the motor drive servo circuit 54 to fast-forward the tape.

The linear time counter display section 65 displays the linear time by counting the CTL signal even during fast forward. The counter value is also input to the control unit 52, and the traveling mechanism unit 55 is controlled so that reproduction is started from the point where the counter value at the beginning of the read program No. 2 and the currently counted linear time counter value become the same. The search is completed when playback starts. Program No.
No matter what number is used, the search can be performed in the same manner.

Embodiment 5 FIG. The configuration of the magnetic recording / reproducing apparatus in the fifth embodiment is the same as that of the fourth embodiment shown in FIG. FIG. 18 shows an example of the contents stored in the linear time counter storage unit 66 in the fifth embodiment.

First, the outline of this embodiment will be described. In the present embodiment, a search is made up to the vicinity of the program with the linear time counter value, and then the start is performed by an index signal. In this way, the linear time counter storage unit 66
For example, as shown in FIG. 18, the data stored in the memory can be accurately cueed even when the storage capacity is reduced and the second is set to a unit of 10 seconds. Further, the influence of the skipping of the index signal at the time of high-speed search or the deviation of the linear time counter due to the skipping of the reading of the CTL signal is reduced.

Next, the operation will be described. The method for generating a multi-screen is the same as that in the fourth embodiment, and a description thereof will be omitted. In this embodiment, the counter value stored in the linear time counter storage unit 66 may be a unit of 10 seconds in units of seconds as described above, but the counter value at this time is, for example, always a value before the index signal. Unify.

Next, the search operation will be described. The method of selecting the program No. to be searched is the same as that of the fourth embodiment, and the description is omitted. Now, it is assumed that the program No. 2 is selected. The selection result is transmitted from the operation unit 51 to the control unit 52,
The control unit 52 enters the program search mode. Next, the search operation is started, but this is also the same as that of the fourth embodiment, and a description thereof will be partially omitted.

The control unit 52 has a linear time counter storage unit 66
The traveling mechanism unit 55 is controlled so that the reproduction is started from the point where the counter value read from the counter and the current counter value match. Since the index signal is always recorded after this counter value, there is an index signal within 10 seconds after reproduction. The reproduced CTL signal is input to the index discriminating circuit 56. When the index signal is detected, an index discovery signal is sent to the control unit 52. The control unit 52 sets the reproducing circuit 58 and the output changeover switch 63 to the reproducing mode to complete the search. . In addition, a search can be similarly performed regardless of the program number.

In the present embodiment, the search is performed by the linear time counter up to the unit of 10 seconds. In this case, it takes a maximum of one minute until the index signal is found after the traveling mechanism unit 55 enters the playback mode, and the search time becomes long. Therefore, the current linear time counter value is the same as the counter value of the linear time counter storage unit 66. In this case, the mode is switched to the index search mode while fast-forwarding, and thereafter, the cueing is performed as in the second embodiment.

Embodiment 6 FIG. The configuration of the magnetic recording / reproducing apparatus in the sixth embodiment is as shown in FIG. When recording on a tape, the recording signal selection switch 85 determines whether the input signal is a signal from an external input terminal 91, a signal from a television broadcast receiving circuit 92, or an output signal from an image signal memory circuit 79. But switch 86
Through the superimpose circuit 93, and the output is input to the recording circuit 82, where it is converted into a signal to be recorded on the magnetic tape,
After passing through 83, it is supplied to the head of the traveling control unit 77 and recorded on the tape. The control unit 95 controls the motor drive servo circuit 76 to drive the motor of the running control unit 77 to start recording and running of the tape and to generate a control pulse which is a reference signal for speed control of the running of the tape.

The data of the program data memory circuit 94 and the index signal generated as needed from the control unit 95 are multiplexed in a time series in the data multiplexer 96 and superimposed on the control signal as a change in duty by the control recording signal processing circuit 74 to control the running. It is recorded on the tape by the control head of the unit 77. Here, the data of the program data memory circuit 94 is a cassette tape number, the number of programs, a recording date and time, a broadcast channel, a classification, a recording start address, a character code, and the like. The data multiplexer 96 time-multiplexes a part of the data of the program data memory circuit 94 and the index signal from the control unit 95 in a predetermined format.

In the magnetic recording / reproducing apparatus of this embodiment, immediately after the tape starts recording and running, the control unit 95 generates an index signal and records the index signal on the tape by the above-described method. Since the procedure for the control unit 95 to create a multi-screen for the purpose of search from the tape on which the program is recorded is characteristic in this embodiment,
A diagram showing a control procedure of the control unit 95 as a flowchart.
20 will be described in detail below.

With respect to the tape on which the program has been recorded, the control unit 95 drives the running control unit 77 by the motor drive servo circuit 76, and rewinds the tape to the head of the program or the beginning of the tape (S1). The end of rewinding is performed by detecting an index signal at the head of the program or a leader tape at the beginning of the tape (S2). Thereafter, reproduction or high-speed traveling is performed (S3), and a signal from the control head of the traveling control unit 77 is transmitted to the control signal duty discrimination circuit 73.
, Where the index signal is detected (S
Four).

When the index signal is detected, the control unit 95
Starts the count after resetting the running time timer in the timer circuit 98 (S5). The output t of the travel time timer is compared with a predetermined value a (S6), and when it exceeds the value, the control unit 95 puts the device in the reproduction mode (S7), and the signal from the head of the travel control unit 77 switches between recording and reproduction. A character pattern corresponding to the data from the program data memory circuit 94 is input to a reproduction circuit 75 via a switch 83, converted and output as an image signal here, passed through a switch 86, and passed through a switch 86 as an image signal. It becomes the added signal. This signal is output to the television receiver 78 and stored in the image signal memory circuit 79 (S8).

Here, the constant a sets the time difference on the tape between the index detecting unit and the place where the image stored in the memory is sampled, and its purpose is to create a multi-screen while avoiding commercials. Specifically, considering a case where a multi-screen is created from a tape on which a broadcast program has been pre-recorded, since most of the broadcast program is a commercial image, the index is automatically recorded at the start of recording and the index is detected during playback. The commercial image can be avoided by storing the image signal after the tape has been run for a predetermined time in the memory and creating a multi-screen.

Further, it is possible to make the title image of the program a multi-screen by appropriately setting the value of the constant a in accordance with the broadcast program, so that the indexing work conventionally required becomes unnecessary. The time and effort required to create a multi-screen for search purposes can be greatly simplified. When storing image signals in the memory, the memory control circuit 80
Reduces the image signal by thinning out the write data of the image signal to the memory.

Thereafter, when the index is detected while the tape is running again, the memory control circuit 80 stores the reproduced image signal at a different address of the image signal memory circuit 79 to form a multi-screen. When the image is stored in all of these addresses (S9), when the signal recording section of the tape ends (S10), the control unit 95 rewinds the tape to the head of the program or the beginning of the tape (S11), and the multi-screen Finish creating. Here, the end of the recording section of the tape is performed by a known method such as detecting the presence or absence of a control signal or the presence or absence of a video synchronization signal in a reproduction signal.

The multi-screen created by the above procedure is convenient because, if the data of the image signal memory circuit 79 is non-volatile, it can be immediately displayed and used for searching even if the power of the apparatus is turned off and on. Even in the case of volatile, by recording this at the beginning of the tape, for example, it can be reproduced and used many times. To search for programs from the multi-screen display,
When a screen with a number is designated by a known method, for example, the screen can be easily operated by performing high-speed running from the tape start end to the index in the order of the number.

FIG. 21 is a diagram showing a screen according to the fifth embodiment.
FIG. 21A shows a list of a part of the data in the program data memory circuit 94, in which a part of the data in the memory is displayed in rows for each cassette number, and a cassette containing a desired program from a plurality of cassette tapes. Used to select On the screen, data of four cassettes are displayed, and display items are a cassette number, a recording date, a classification, and character data from the left.

FIG. 21B shows a multi-screen display.
Each of the screen areas numbered from 1 to 12 is a part of the image signal of the program recorded on the cassette tape, and the program is searched by selecting the screen of the desired program from the list display. In the figure, the sixth child screen is selected, and when the search is performed in this state, the tape is fed from the tape start end to the sixth index position. The characters in the lower column are obtained by superimposing a part of the data of the program data memory circuit 94 on the image signal in the superimpose circuit 93, and display the character information in addition to the multi-screen to facilitate the search. .

Embodiment 7 FIG. The configuration of the magnetic recording / reproducing apparatus according to the seventh embodiment is as shown in FIG. 22. When a broadcast signal is recorded on a tape, a recording signal selection switch 88 controls the signal from the television broadcast receiving circuit 92 or the image signal memory circuit. The output signal from 79 is switch 86
Through the superimpose circuit 93, the output of which is input to the recording circuit 82, where it is converted into a signal to be recorded on the magnetic tape, passes through the recording / reproduction switch 83, and passes through the head of the traveling control unit 77. And recorded on the tape. The control unit 95 controls the motor drive servo circuit 76 to drive the motor of the running control unit 77 to start recording and running of the tape and to generate a control pulse which is a reference signal for speed control of the running of the tape.

The data of the program data memory circuit 94 and the index signal generated as needed from the control unit 95 are multiplexed in a time series in the data multiplexer 96, and superimposed on the control signal as a change in duty by the control recording signal processing circuit 74 to control the traveling. It is recorded on the tape by the control head of the unit 77. Here, the data of the program data memory circuit 94 is a cassette tape number, the number of programs, a recording date and time, a broadcast channel, a classification, a recording start address, a character code, and the like. The data multiplexer 96 time-multiplexes a part of the data of the program data memory circuit 94 and the index signal from the control unit 95 in a predetermined format.

The television broadcast receiving circuit 92 demodulates the audio signal simultaneously with the television broadcast image signal. At this time, it detects whether the broadcast audio mode is monaural, stereo, or bilingual. And outputs it to the control unit 95. Broadcast audio modes such as mono for news, stereo for musicals, bilingual for foreign movies, etc. are usually constant within one program, and change only in commentary before and after broadcast or mostly before and after commercial broadcasts. It is. On the other hand, when recording a broadcast for the purpose of time shifting, it is often recorded including a commercial broadcast, so that the image at the start of recording cannot be used for a multi-screen for search purposes. The point in time when the audio mode changes from a mode other than the bilingual mode to the bilingual mode is the start time of the movie program, from which a multi-screen may be created.

During recording or reproduction of the program, the control unit
Since the procedure by which the 95 creates a multi-screen for the purpose of search is characteristic of this embodiment, the control procedure of the control unit 95 will be described in detail below with reference to FIG. Here, three procedures: 1. Record an index and create a multi-screen during recording. 2. Record the index during recording, and create a multi-screen from the playback image at the index position during playback. Recording of an index and creation of a multi-screen are performed during playback. Among them, a method of creating a multi-screen in the second procedure is publicly known, and the other description will be common to FIG.

The first procedure has the advantage that the quality of the image is better than the case where the multi-screen is created from the recording signal because the multi-screen is created from the recording signal. Is convenient when the audio mode of the broadcast is unknown.
In the procedure described above, a program recorded one or more times
Suitable for creating two multi-screens. These can be appropriately selected by the user, and the memory input changeover switch 87 switches between the multi-screen source signal and the recording signal in accordance with the selection.

To create a multi-screen, first, an audio mode for recording an index is set (S21), then recording or reproduction is performed (S22), and a change in the audio mode is detected (S23). The control unit 95 detects the change based on the audio mode signal from the receiving circuit 92 at the time of recording, and detects the change at the time of reproduction by, for example, the change of the audio mode data superimposed and recorded on the control signal. When the audio mode changes to the predetermined mode, the index signal is recorded and / or the image signal is reduced and stored in the memory (S24). Whether the image is stored in all the memories (S25) or whether the signal recording section of the tape ends
(S26) When the recording or reproduction is completed (S27), the control unit
Step 95 ends recording the index and / or reducing and storing the image signal in the memory (S28).

The multi-screen created by the above-described procedure is convenient because if the data of the image signal memory circuit 79 is nonvolatile, it can be immediately displayed and used for searching even when the power of the apparatus is turned off and on. Even in the case of volatile, by recording this at the beginning of the tape, for example, it can be reproduced and used many times. To search for programs from the multi-screen display,
When a screen with a number is designated by a known method, for example, the screen can be easily operated by performing high-speed running from the tape start end to the index in the order of the number.

The display screen of the magnetic recording / reproducing apparatus of the seventh embodiment described above is the same as that shown in FIG. 21 which is the display screen of the magnetic recording / reproducing apparatus of the sixth embodiment, and the configuration and the functions are also the same. is there.

Embodiment 8 FIG. The configuration of the magnetic recording / reproducing apparatus of the eighth embodiment is shown in FIG. 24. When recording is performed on a tape, a recording signal selection switch is used.
According to 85, whether the input signal is a signal from the external input terminal 91, a signal from the television broadcast receiving circuit 92, or an output signal from the image signal memory circuit 79 passes through the switch 86 to the superimpose circuit 93 The output is input to the recording circuit 82, where it is converted to a signal to be recorded on the magnetic tape, passed through the recording / reproduction switch 83, supplied to the head of the travel control unit 77, and recorded on the tape. Is done. The control unit 95 controls the motor drive servo circuit 76 to drive the motor of the running control unit 77 to start recording and running of the tape and to generate a control pulse which is a reference signal for speed control of the running of the tape.

The data of the program data memory circuit 94 and the index signal generated at any time from the control unit 95 are multiplexed in a time series in the data multiplexer 96, and are superimposed on the control signal as a change in duty by the control recording signal processing circuit 74 for running. The data is recorded on the tape by the control head of the control unit 77. Here, the data of the program data memory circuit 94 is a cassette tape number,
The number of programs, recording date and time, broadcast channel, classification, recording start address, character code, and the like. The data multiplexer 96 time-multiplexes a part of the data of the program data memory circuit 94 and the index signal from the control unit 95 in a predetermined format.

The signal selected by the memory input changeover switch 87 is input to the image signal memory circuit 79 and the image correlation detection circuit 97. The image input to the image signal memory circuit 79 is stored in an unrecorded area in the memory, and is output to the image correlation detection circuit 97 after one frame. Image correlation detection circuit
97 obtains a correlation between the same pixel signal on the television screen of the signal from the memory input changeover switch 87 and the signal from the image signal memory circuit 79, and sends the value to the control unit 95.

During recording or reproduction of the program, the control unit
The procedure by which the 95 creates a multi-screen for the purpose of search is characteristic of the present embodiment, and the control procedure of the control unit 95 will be described in detail below with reference to FIG. Here, three procedures: 1. Record an index and create a multi-screen during recording. 2. Record the index during recording, and create a multi-screen from the playback image at the index position during playback. Recording of an index and creation of a multi-screen are performed during playback. Among them, a method of creating a multi-screen in the second procedure is publicly known, and the other description will be common to FIG.

The first procedure is advantageous in that since the multi-screen is created from the recording signal, the quality of the image is better than when the multi-screen is created from the reproduction signal, and no extra time is required for creating the multi-screen. In the procedure, it is possible to create a multi-screen after confirming the presence and location of the index, and this is convenient when the contents of the program are unknown. In the third procedure, one program from one recorded program is recorded multiple times. Suitable for creating multiple screens.

[0107] These can be selected by the user as appropriate, and in accordance with this selection, the switch 87 switches between the recording signal and the reproduction signal for the multi-screen source signal. When a multi-screen is created, the number Nmax of the sub-screens of the multi-screen is set to a predetermined value, and the value N of the sequence number counter of the sub-screen to be written is set to 1 (S31). Next, recording or reproduction is performed (S32), and the signal input to the image signal memory circuit 79 is stored in the Nth child screen of the memory (S33).

The data of the Nth small picture stored in the memory of the picture signal memory circuit 79 is outputted to the picture correlation detecting circuit 97 in synchronization with the timing of the next picture frame. The image correlation detection circuit 97 obtains the correlation between the signal from the memory input changeover switch 87 and the same pixel signal on the television screen of the signal from the image signal memory circuit 79 (S34), and sends the value to the control unit 95. The control unit 95 determines whether the correlation value of the image input from the image correlation detection circuit 97 is equal to or smaller than a predetermined value b (S35), and if so, records an index on the tape and / or stores the subsequent image signal in the memory. It is stored in the Nth child screen (S36), and 1 is added to the sequence number counter N of the child screen (S37), and it is determined whether the counter value at that time is larger than Nmax (S38).

If it is not large, it is determined whether or not it is the tape end (S
39) If it is not the end, it is determined whether the recording or reproduction end operation has been performed (S40). If not, the flow shifts to S33 to continue the multi-screen creation. If the end operation is performed in S40, if the counter value is larger than Nmax in S38, and if the tape is in the end in S39, the tape running is stopped (S41), and the creation of the multi-screen is ended.

The multi-screen created according to the above procedure is convenient because, if the data of the image signal memory circuit 79 is non-volatile, it can be immediately displayed and used for searching even when the power of the apparatus is turned off and on. Even in the case of volatile, by recording this at the beginning of the tape, for example, it can be reproduced and used many times. To search for programs from the multi-screen display,
When a screen with a number is designated by a known method, for example, the screen can be easily operated by performing high-speed running from the tape start end to the index in the order of the number.

The display screen of the magnetic recording / reproducing apparatus according to the eighth embodiment described above is the same as that shown in FIG. 21 which is the display screen of the magnetic recording / reproducing apparatus according to the sixth embodiment, and the configuration and the functions are also the same. is there.

Embodiment 9 FIG. The configuration of the magnetic recording / reproducing apparatus according to the ninth embodiment is as shown in FIG. 26.
According to 85, whether the input signal is a signal from the external input terminal 91, a signal from the television broadcast receiving circuit 92, or an output signal from the image signal memory circuit 79 passes through the switch 86 to the superimpose circuit 93 The output is input to the recording circuit 82, where it is converted to a signal to be recorded on the magnetic tape, passed through the recording / reproduction switch 83, supplied to the head of the travel control unit 77, and recorded on the tape. Is done. The control unit 95 controls the motor drive servo circuit 76 to drive the motor of the running control unit 77 to start recording and running of the tape and to generate a control pulse which is a reference signal for speed control of the running of the tape.

The data of the program data memory circuit 94 and the index signal generated at any time from the control unit 95 are multiplexed in a time series in the data multiplexer 96, and are superimposed on the control signal as a change in duty by the control recording signal processing circuit 74 and run. The data is recorded on the tape by the control head of the control unit 77. Here, the data of the program data memory circuit 94 is a cassette tape number,
The number of programs, recording date and time, broadcast channel, classification, recording start address, character code, and the like.

The data multiplexer 96 time-multiplexes a part of the data of the program data memory circuit 94 and the index signal from the control unit 95 in a predetermined format. The signal selected by the memory input switch 87 is input to the image signal memory circuit 79 and stored therein. When performing scheduled recording, a scheduled recording start time, an end time, and a broadcast channel are input via the operation unit 71, and these are stored in the program data memory circuit 94. Among these, the time data and the time of the timer circuit 98 are compared by the control unit 95, and when they match, predetermined control is performed.

During recording or reproduction of the program, the control unit
Since the procedure by which the 95 creates a multi-screen for the purpose of search is characteristic of the present invention, the control procedure of the control unit 95 will be described in detail below with reference to FIG. Here, there are two procedures: 1. Record an index and create a multi-screen during recording. An index is recorded during recording, and a multi-screen is created from a playback image at the index position during playback. Among them, a method for creating a multi-screen in the second procedure is publicly known. Perform in common.

The first procedure is advantageous in that since the multi-screen is created from the recording signal, the quality of the image is better than when the multi-screen is created from the reproduction signal, and no extra time is required for creating the multi-screen. The procedure is suitable when the image signal memory is volatile. These can be appropriately selected by the user, and the switch 87 switches between the source signal of the multi-screen and the recording signal or the reproduction signal in accordance with the selection.

When a multi-screen is created from a programmed recording broadcast,
Calculate the scheduled recording time from the scheduled recording start time and end time (S
51) Next, (reserved recording time / the number of child screens of the multi-screen) is obtained and set as a cycle T (S52). After waiting for the recording start time (S53), the recording is started (S54), and the index is recorded and / or the image signal is reduced and stored in the unstored portion of the memory (S55).

Here, the output of the timer that outputs t is reset to start the operation of the timer (S56), and t is compared with the T (S57), and if it exceeds T, the process proceeds to S55. Equally spaced indexes and / or multiple screens are configured. If t is less than T, it is determined whether there is an unstored portion of the image memory (S58).
It is determined whether the end time of the scheduled recording has come (S5
9) If not, it is determined whether or not the end of the recording tape has been reached (S60).
Move to When there is no unused memory in S58, when the end time of the scheduled recording is reached in S59, and when the end of the tape is reached in S60, the recording ends (S61).

The multi-screen created according to the above procedure is convenient because, if the data of the image signal memory circuit 79 is non-volatile, it can be immediately displayed and used for searching even if the power of the apparatus is turned off and on. Even in the case of volatile, by recording this at the beginning of the tape, for example, it can be reproduced and used many times. To search for programs from the multi-screen display,
When a screen with a number is designated by a known method, for example, the screen can be easily operated by performing high-speed running from the tape start end to the index in the order of the number.

The display screen of the magnetic recording / reproducing apparatus of the ninth embodiment described above is the same as that shown in FIG. 21 which is the display screen of the magnetic recording / reproducing apparatus of the sixth embodiment, and the configuration and functions are also the same. is there.

Embodiment 10 The configuration of the magnetic recording / reproducing apparatus of Embodiment 10 is the same as that of Embodiment 9 shown in FIG. 26, so that the description of the components having the same functions is omitted, and the configuration having different functions will be described below. Describe the elements.
The control unit 95 generates an index signal immediately after starting the recording of the program, sends it to the data multiplexer 96, time-multiplexes this with the data such as the cassette number from the program data memory circuit 94, and then sends it to the control recording signal processing circuit 74. Input, convert to control recording signal and record on magnetic tape. By the above method, a tape with an index recorded only at the head of the program is created. While the control unit 95 creates a multi-screen during the reproduction of the program, this procedure is characteristic of the present invention, and the control procedure of the control unit 95 will be described in detail below with reference to FIG.

The recorded tape is rewound (S71), and the beginning of the tape or the head of the program is detected (S72). Whether to detect the head of the program or the beginning of the tape can be selected. Here, the head of the program is detected by an index. If detected,
High-speed running is performed (S73), control signals are counted (S74), and the end of the program is detected (S75). When the end is detected (S76), the quotient T is obtained by dividing the integrated count value M of the control signal by the number Nmax of sub-screens of the multi-screen (S77), and the writing sub-screen number counter N is set to Nmax (S78). ) And rewind the tape (S79)
, And simultaneously count the control signal (S80),
The count value is compared with T (S81).

Here, when the count value becomes T or more, the index is recorded and / or the reproduced image is thinned out and stored in the Nth sub-screen of the image signal memory (S82). Reset (S8
3) It is determined whether the value of N is 0 or not (S84). If the value of N is not 0, it is detected whether it is the beginning of the tape or the head of the program (S8).
5) If not detected, the flow shifts to S79 described above. When N is 0 in S84 and when the detection is made in S85, the tape running is stopped (S86), and the creation of the multi-screen is terminated.

In the above S82, the following two cases are as follows: 1. Record the multi-screen simultaneously with recording the index. There are multiple screens to remember. The first case is suitable, for example, when it is desired to confirm and search the contents of a specific program among a plurality of programs, or is also suitable for a tape whose recording contents are unknown and whose index is not recorded. You can create a multi-screen that can. The second case is suitable for a case where a specific program is not searched and only the content is confirmed, and an unnecessary index is not recorded. These are appropriately selected and used.

The multi-screen created according to the above procedure is convenient when the data of the image signal memory circuit 79 is nonvolatile because it can be immediately displayed and used for searching even when the power of the apparatus is turned on and off. Even in the case of volatile, it can be reproduced and used many times by recording it at the beginning of the program, for example. Searching for a program from the multi-screen display can be easily performed by a known method, for example, by specifying a screen with a number display, counting from the start of the program, and running at high speed to the index in the order of the number.

The display screen of the magnetic recording / reproducing apparatus of the tenth embodiment described above is the same as that of FIG. 21 which is the display screen of the magnetic recording / reproducing apparatus of the sixth embodiment, and the configuration and the functions are also the same. is there.

Embodiment 11 The configuration of the magnetic recording / reproducing apparatus of the embodiment 11 is the same as that of the embodiment 9 shown in FIG. 26, so that the description of the components having the same functions is omitted, and the configuration having different functions will be described below. Describe the elements.
When performing scheduled recording, the scheduled recording start time,
An end time and a broadcast channel are input, and these are stored in the program data memory circuit 94. Since the procedure by which the control unit 95 creates a multi-screen for the purpose of search in reserved recording is characteristic of the present invention, the control procedure of the control unit 95 will be described in detail below with reference to FIG.

First, the time period T for storing the multi-screen is set, and the sub-screen counter N of the multi-screen is set to 1.
(S91). The reserved recording time is obtained from the reserved recording start time and the end time (S92), and then (reserved recording time / time period T) is obtained and set to L (S93). The integer part of L indicates the number of times the multi-screen is stored. Furthermore, the minimum Nmax such that L ≦ Nmax
Is selected (S94). Here, Nmax takes values of 4, 9, and 16, respectively, in the case of a small picture as shown in FIG. When L becomes 12.4, for example, Nmax is selected as 16 and FIG.
The multi-screen of (c) is created. After waiting for the recording start time (S95), recording is started (S96),
The index is recorded and / or the image signal is reduced and recorded on the Nth sub-screen of the memory (S97).

Here, the output of the timer that outputs t is reset to start the operation of the timer (S98), and the sub-screen counter N is incremented by 1 (S99). The timer value t is compared with the time period T (S100). If the timer value t becomes longer than the time period T, the process proceeds to S97 to form an evenly spaced index and / or multi-screen. If t is less than T, the sub-screen counter value N is compared with Nmax (S101), and if N ≦ Nmax, it is determined whether or not the end time of the scheduled recording has come (S102). It is determined whether the end of the recording tape has been reached (S103), and if not, the process proceeds to S100. When N> Nmax in S101, when the end time of the scheduled recording is reached in S102, and when the end of the tape is reached in S103, the scheduled recording ends (S104).

In the above S97, the following two cases are as follows: 1. Record the multi-screen simultaneously with recording the index. There are multiple screens to remember. The first case is suitable, for example, when the user wants to check and search the contents of a specific program of the scheduled recording program.
The second case is suitable for a case where only a list of contents is checked without searching for a programmed recording program, and an unnecessary index is not recorded. These are appropriately selected and used.

The multi-screen created according to the above procedure is convenient because if the data of the image signal memory circuit 79 is nonvolatile, it can be immediately displayed and used for searching even if the power of the apparatus is turned off and on. Even in the case of volatile, it can be reproduced and used many times by recording it at the beginning of the program, for example. Searching for a program from the multi-screen display can be easily performed by a known method, for example, by specifying a screen with a number display and running at high speed from the program start end to the index in the order of the number.

The display screen of the magnetic recording / reproducing apparatus of the eleventh embodiment described above changes the number of child screens in accordance with the length of the program for programmed recording and the recording cycle T of the multi-screen as shown in FIG. . As a result, the number of unused multi-screens can be reduced as compared with the case where the number of sub-screens is constant, so that the TV screen can be effectively used. In addition, when the number of storage screens is small, the size of the sub-screen can be increased. There is an advantage that the contents can be easily checked.

Embodiment 12 Since the configuration of a magnetic recording / reproducing apparatus of Embodiment 12 is the same as that of Embodiment 9 shown in FIG. 26, the description of the components having the same functions is omitted, and the configuration having different functions will be described below. Describe the elements.
The control unit 95 generates an index signal immediately after starting the recording of the program, sends it to the data multiplexer 96, time-multiplexes this with the data such as the cassette number from the program data memory circuit 94, and then sends it to the control recording signal processing circuit 74. Input, convert to control recording signal and record on magnetic tape. By the above method, a tape with an index recorded only at the head of the program is created. The control unit 95 creates a multi-screen during the reproduction of the program. Since this procedure is characteristic of the present invention, the control procedure of the control unit 95 will be described in detail below with reference to FIG.

First, a time period T for storing the multi-screen is set (S111), the tape is rewound (S112), and the beginning of the tape or the head of the program is detected (S113). Whether to detect the head of the program or the beginning of the tape can be selected. Here, the head of the program is detected by an index. If it is detected, reset the control pulse counter (S114), perform high-speed running (S115),
The control signal is counted (S116), and the end of the program is detected (S117). Stops when the end is detected (S11
8) Then, a program time is obtained from the count value of the control signal (S119), and then (program time / time period T) is obtained and set to L (S120). The integer part of L indicates the number of times the multi-screen is stored.

Further, the minimum Nmax satisfying L ≦ Nmax is selected (S121). Here, Nmax takes values of 4, 9, and 16, respectively, in the case of a small picture as shown in FIG. L is, for example,
In the case of 12.4, Nmax is selected as 16 and the multi-screen shown in FIG. 30C is created. Subsequently, the sub-screen counter N of the multi-screen is set to an integer part of L, in this example, 12 (S122), and the control pulse counter is reset.
(S123), the tape is rewound (S124), the beginning of the tape or the head of the program is detected (S125), and if not detected, the control signal is counted and the rewind time is obtained from the value (S125).
126), it is determined whether the rewind time is equal to or longer than the time period T (S127),
If so, the index is recorded and / or the image signal is reduced and recorded on the Nth child screen of the memory (S128). Subsequently, the sub-screen counter N is decremented by 1 (S129), the count value of the control signal is reset (S130), and it is determined whether or not the value of the sub-screen counter N is 0 (S131). I do. If the beginning of the tape or the head of the program is detected in S125, or if the small screen counter is 0 in S131, the apparatus is stopped (S132) and the creation of the multi-screen is terminated.

In the above S128, the following two cases are as follows: 1. Record the multi-screen simultaneously with recording the index. There are multiple screens to remember. The first case is suitable, for example, when it is desired to confirm and search the contents of a specific program from among a plurality of recorded programs, and the second case is suitable when only checking the list of contents without performing a search. Is not recorded. These are appropriately selected and used.

The multi-screen created by the above procedure is convenient because, if the data of the image signal memory circuit 79 is non-volatile, it can be immediately displayed and used for searching even if the power of the apparatus is turned off and on. Even in the case of volatile, it can be reproduced and used as many times as it is recorded on the head of the program, for example. To search for programs from the multi-screen display,
When a screen with a number is designated by a known method, for example, the screen can be easily moved by performing high-speed running from the program head to the index in the order of the number.

The number of child screens of the display screen of the magnetic recording / reproducing apparatus of the twelfth embodiment described above changes according to the length of the program for scheduled recording and the recording cycle T of the multi-screen, as shown in FIG. . As a result, the number of unused multi-screens can be reduced as compared with the case where the number of sub-screens is constant, so that the TV screen can be effectively used. In addition, when the number of storage screens is small, the size of the sub-screen can be increased. There is an advantage that the contents can be easily checked.

Embodiment 13 The magnetic recording / reproducing apparatus of Embodiment 13 is different from any of the magnetic recording / reproducing apparatuses of Embodiments 6 to 12 described above in that the magnetic recording / reproducing apparatus has a reservation recording function. Among the multi-screen creation procedures of each control unit 95 of the apparatus, those performed at the time of reproduction are automatically executed, and the configuration thereof is shown in FIG. 19, FIG. 22, FIG. 24 or FIG. 26 used in the description of each embodiment. It is shown. Hereinafter, a case where the thirteenth embodiment is applied to the sixth embodiment will be described with reference to FIG. 19 as an embodiment. However, description of components having the same functions as the sixth embodiment will be omitted, and description of components having different functions will be described below. Do. Since the procedure by which the control unit 95 creates a multi-screen for the purpose of search is characteristic of this embodiment, the control procedure of the control unit 95 will be described in detail below with reference to FIG.

The control unit 95 generates an index signal immediately after the tape starts recording and running at the time of programmed recording.
The data of the program data memory circuit 94 and the index signal generated by the control unit 95 are transmitted to a data multiplexer 96.
Are multiplexed in time series, and are superimposed on the control signal as a change in duty by the control recording signal processing circuit 74 and are recorded on the tape by the control head of the traveling control unit 77.

The above operation is the same as that of the magnetic recording / reproducing apparatus of the sixth embodiment, and a series of control procedures at the time of programmed recording by these control units 95 are indicated by S141 in FIG. Next, the end of the scheduled recording is detected (S142), and when the end is detected, the power of the apparatus is normally turned off.
Move to 43. Here, S143 is a procedure for creating a multi-screen from the reproduction signal. In this example, the control unit 95 in the sixth embodiment is used.
Includes the flow shown in FIG.

After these operations are completed, the power of the apparatus is turned off (S144). When a plurality of scheduled recordings are performed, the process proceeds to S143 when the last scheduled recording is completed. This S143
In the sixth embodiment, the apparatus is executed by the user instructing the apparatus to create a multi-screen when the apparatus is in normal use other than the scheduled recording. Therefore, the waiting until the multi-screen is created is performed. Although time is required, according to the present embodiment, when the apparatus is turned on and normal use is started, the waiting time is unnecessary because the creation of the multi-screen has been completed.

The multi-screen created by the above procedure is convenient when the data of the image signal memory circuit 79 is non-volatile because it can be immediately displayed and used for searching even if the power of the apparatus is turned off and on. Even in the case of volatile, by recording this at the beginning of the tape, for example, it can be reproduced and used many times. To search for programs from the multi-screen display,
When a screen with a number is designated by a known method, for example, the screen can be easily operated by performing high-speed running from the tape start end to the index in the order of the number.

As described above, according to the sixth to thirteenth embodiments, the sub-screens of the multi-screen used for searching the program are automatically selected and stored, so that the program is reproduced and the index is manually entered while confirming the contents. The troublesome work of omitting can be omitted. Also, in the present invention, when a procedure for creating a multi-screen at the time of recording is adopted, there is an advantage that image deterioration of the multi-screen is less than when a multi-screen is created from a reproduction signal. When the procedure for creating a multi-screen is taken during the standby time, the waiting time for creating a multi-screen is eliminated, and as a result, an easy-to-use magnetic recording / reproducing apparatus is obtained.

In the sixth to thirteenth embodiments, an example in which the present invention is applied to a video tape recorder having a control track has been described. However, the present invention can be applied to a video tape recorder capable of recording and reproducing an index signal. The recording method of the signal and the index signal may be either digital or analog, respectively, and is not limited to these examples.

Embodiment 14 When the embodiment 14 is carried out, the recording method of the image signal and the index on the recording medium may be either analog or digital. Therefore, the same applies to the digital video tape recorder and the analog video tape recorder. Applicable to Figure 33
1 is a block diagram of an apparatus when applied to an analog video tape recorder having a control track.

In FIG. 33, when recording is performed, a reception signal is output from the television broadcast receiving circuit 121 and the switch 11
4, the signal is input to a recording circuit 122, where it is converted into a signal to be recorded on a magnetic tape, output and passed through a switch 115 to be recorded on the tape by the video head of the traveling mechanism 107. At the start of recording, the system control unit 102 outputs a write signal of an index signal for program search to the control signal processing unit 123, and the control signal processing unit 123, which receives the signal, changes the duty ratio of the control signal to control. The index signal is superimposed on the signal and output to the traveling mechanism 107, and the traveling mechanism 10
Record on the tape with the control head of 7. The control signal processing unit 123 outputs the integrated number of control pulses from the beginning of the tape to the system control unit 102,
The system control unit 102 that has input this converts it into an address value and stores it in the data memory 124 as address data of the program start position in association with the program number.

During the recording of the program, when the tape running is temporarily stopped by the operation of the operation unit 101, or when the operation of the index recording is performed, the system control unit 10 is operated.
2 outputs a sub-index write signal to the control signal processing unit 123, and the sub-index signal is recorded. In this case, the address value at which the sub-index is recorded is not recorded in the data memory. The number of sub-indexes recorded in the middle of each program is
When the recording of the program is completed, the data is stored in the data memory 124 in correspondence with the program number.

FIG. 34A shows a part of the data items of the data memory 124. The data area of the cassette on which the recording has been performed and the data item area 162 of the cassette and the data item area 163 of the program are stored. The program data item 163 is managed by a memory address 164 corresponding to the program number. FIG. 34 (b) shows an example of data when seven programs are recorded on a cassette numbered 18; a 4-digit numerical value is used for the address; The numerical value of the index is stored. Since there is no data after the eighth program, it remains initialized and is not used for search or other data because the number of cassette data programs is seven. The data memory 124 has the same area as the number of cassettes managed by the apparatus.

When a screen for searching is created from the recording position of the index signal of the cassette on which the program has been recorded, an instruction signal from the operation unit 101 is input to the system control unit 102 in FIG. While running in the mode, the control signal processing section 123 reproduces the control signal and outputs to the system control section 102 the integrated number of control pulses from the beginning of the tape.
The system control unit 102 calculates the running address, reads the start address of the first program from the data in the data memory 124, and reduces the tape running speed when the difference between them is less than a predetermined value. When the running speed of the tape decreases, the control signal processing section 123 determines the duty ratio of the reproduction control signal, detects the index signal, and outputs it to the system control section 102.

When the index at the start of the program is detected, the system control unit 102 puts the apparatus in the reproducing state. The signal is reproduced by the video head of the traveling mechanism 107, passes through a switch 115, is input to a reproducing circuit 105, is converted into an image signal, is output, and is passed through a switch 116.
Enter 125. Here, the character is output without being added, and is input to the television receiver 108 from the signal output terminal 126 of the apparatus and to the image signal memory 109 through the switch 117. In response to a write signal from the system control unit 102, the memory control circuit 110 controls the image signal memory 109 so as to store image signal data at one screen index position.

When the image is stored in the image signal memory 109,
The system control unit 102 rewinds the tape to the start end, and sets the apparatus to the recording mode. The data in the image signal memory 109 is read out and output as an image signal, passes through the switch 116, passes through the character generation display section 125, passes through the switch 114, and is input to the recording circuit 122. The system control unit 102 records an image for searching for the first program at the beginning of the tape and records an index by running the tape of the traveling mechanism unit 107 for a short time.

FIG. 35A shows an image to be recorded on the tape at this time. An image 132 at the index recording position of the first program is displayed in a television screen frame 131. An image for searching for the subsequent programs is also recorded at the beginning of the tape. Here, the portion outside the image 132 is a flat signal, which is added by reading certain data from the image signal memory 109.

FIG. 36 (a) shows each recording area of the tape on which the program and the search image have been recorded in the above procedure. The search image area 15 is located at the beginning of the magnetic tape 151.
2 followed by a first program recording area 153, a second program recording area 154, and so on. The control track of the first program has an index I1 at first.
There are three indexes J1, J2 and J3 on the way
There is. Similarly, control tracks after the second program have indexes.

FIG. 36B is an enlarged view of the search image area 152. After the margin 1520 immediately after the leader tape 150, there is a search image 1521 of the program 1 and the index I1, followed by a search image 1522 and the index I2 of the program 2. The same applies to the following programs, but after the search image 1524 of program 7 and the index I7, there is a recording area 1525 for unrecorded programs.

In the case of searching for a program, the control operation of the control unit 127 for controlling the character generation display unit 125 in FIG. 33 is characteristic of this embodiment. Therefore, before describing the control unit 127, the character generation display unit 125 related to its operation
The configuration example will be described, and then the control unit 127 will be described.

FIG. 37 shows an example of the configuration of the character generation display unit 125. The image signal input from the input terminal 171 is input to the synchronization control circuit 172 and the analog switch 168. The synchronization control circuit 172 separates the horizontal synchronization and the vertical synchronization from the image signal and inputs them to the horizontal position counter 173 and the vertical position counter 174, respectively. The dot clock generator 175 generates a time reference clock for displaying characters on the screen and generates a horizontal position counter.
Enter 173. The counter of the horizontal position counter 173 is reset by horizontal synchronization, performs a count operation with a time reference clock, and displays the count value on the display position detector 176 and the video R.
It is input to the AM read address generator 177.

The vertical position counter 174 outputs a count value corresponding to the scanning line of the image signal and inputs it to the display position detector 176 and the video RAM read address generator 177.
Video RAM read address generator 177 is a video RAM
A read address of 178 is generated and input to the access control unit 179.

FIG. 38 shows a memory arrangement of the video RAM 178. The video RAM 178 has storage units corresponding to rows 191 and columns 192, and each storage unit 193 stores a character designation code. The character designation code is designated by the numbers in the row 194 and column 195 of the address in FIG. 39 showing the data arrangement of the character ROM 180. For example, the character "picture" is represented as "6-1" and the first row of the video RAM 178 is designated. , In the ninth column. Each character of the data in the character ROM 180 is composed of binary data of, for example, 16 × 16 dots, and stores a character 196, a blank (no display) 197, a selection symbol 198, a scale symbol 199, and the like. The display position detector 176 inputs the number of scanning lines from the vertical position counter 174 and the horizontal position count value from the horizontal position counter 173, and designates a read dot address in each character area of the character ROM 180.

The character ROM access control section 181 is a character ROM at the address of the character code input from the video RAM 178.
The dot address data input from the display position detector 176 of the character data
5 is read out at the timing of the dot clock input from the switch 5 and input to the analog switch 168. The analog switch 168 displays a character by switching a part of the image signal input from the input terminal 171 to a black or white level signal according to the character data input from the character ROM access control unit 181, and outputs it to the output terminal 182. Output.

The setting and change of display characters are performed by commands from external control means. For example, when setting display of one character, serial data from external control
183 to the serial / parallel converter 184,
Here, it is converted to parallel data and output to the latch 185,
The latch 185 collectively stores a predetermined number of data on the data bus 186.
And outputs specific bit data to the command decoder 187. The command decoder 187 decodes the instruction of the data transfer destination and the external control means and outputs it to the control bus 188.

Upon receiving a signal from the control bus 188, the video R
The AM write address generator 189 inputs a video RAM address from the data bus 186 and
The address counter 190, which has received the address 0 and outputs it to the access control unit 179, stores and holds the address, and the access control unit 179 sets the character address of the video RAM 178 to a write state. At this time, the video RA
Character code data is input to M178 and stored at a predetermined address.

FIG. 40 shows a part of serial data when characters are set and changed on the screen display.
Reference numeral 201 denotes a "table of contents" on the first line and a series of data for displaying the cursor and "1" on the second line in FIG. 38, and 202 denotes a symbol on the second line and the first column in FIG. And second
This is data for displaying a cursor in the sixth column of the row. Here, the character is erased by storing "3-5" indicating no display in the character data of the video RAM. In FIG. 38,
Although the cursor is displayed at 12 places, it is actually displayed alternatively, and the display position is moved in the procedure of 202.

When searching for a program, the control unit 127
Controls the screen display and outputs an instruction signal to the system control unit 102.On the other hand, the system control unit 102 inputs the instruction signal to control the device, and performs a key input signal from the operation unit 101 and a key input signal from the control signal processing unit 123. Input data and control unit
Output to 127.

FIG. 41 is a flowchart showing the control flow of the control section 127 in this embodiment. When a cassette is mounted on the apparatus, the cassette number is read (S201). Here, a known method such as superimposing and recording the cassette number on the control signal is used. The control unit 127 reads the data of the area of the cassette number in the data memory based on the data of the cassette number (S202), and obtains a position where the cursor can be moved. Fig. 34
(B) is an example of data in the data memory 124, in which the cassette number is 18, the number of programs is 7, the number of sub-indexes of the third program is 3, and the like. From this data, the control unit 127 obtains a position on the screen where the cursor can move (S203).

In FIG. 38, which shows the configuration of the video RAM of the character generation display unit 125, the position where the cursor can be moved when the number of programs is 7 is represented by the coordinates of a matrix.
1, 2-6, 2-11, 2-16, 5-1, 5-6, 5
-11. These coordinate values are used alternatively for displaying a cursor according to the value of a cursor position counter described later. Here, the character display of FIG. 38 corresponds to the multi-screen display of FIG. If the screen display is as shown in FIG.
In the character display of (b), the position where the cursor can be moved has a coordinate value of the twelfth row, and the column changes according to the number of sub-indexes.

The control unit 127 reproduces the beginning of the tape and creates a multi-screen from a plurality of search screens.
An instruction signal is output to 102 (S204). The system control unit 102 that has input this is in the area of the tape start end shown in FIG.
The search screen of the first program recorded in 1521 is reproduced. The reproduction signal is output from the reproduction circuit 105 and the switch 116,
After passing through the character generation display unit 125 and the switch 117, the image data is reduced and stored in the image signal memory 109. For example, in the case of the fourth program, the data in the image signal memory 109 is stored in the screen area shown in FIG.
It is stored in the address corresponding to 141.

Since the eighth program is not recorded on this tape, the screen area 142 and the area without hatching in FIG. When the search screen of the seventh program is reproduced and stored in the image signal memory 109, the creation of the multi-screen is completed and the image signal memory 109 outputs a signal.
(S205).

The control section 127 sets the value of the cursor position counter to the initial value 1 (S206), and controls the character generation display section 125 to superimpose the character display shown in FIG. 42 (b) on the input multi-screen. In FIG. 42 (b), the character 143 is a multi-screen explanatory character, the broken line 144 is an assumed line of a multi-frame image frame on which characters are superimposed, and the cursor 145 is on the left of “6” in the figure, but the initial state is “1”. To the left of The character generation display section 125 is shown in FIG.
The image signal of FIG. 42 (c) in which FIG. 42 (b) is superimposed on FIG. 42 (b) is output, passed through the output terminal 126 of the device, and displayed on the TV receiver 108 (S207).

By checking the display on the TV receiver 108, it is immediately known that seven programs are recorded in the cassette number 18. Check the multi-screen and move the cursor to the sub-screen to be played (S300). This cursor moving means can be variously used. For example, a left / right moving key shown in FIG. 43 (a), an up / down / left / right moving key shown in FIG. 43 (b), an existing receiving channel change key, and a joystick, a mouse, etc. The flow diagram inside the S300 is often changed according to these selections. These cursor moving means are provided in the operation unit 101 or a remote operation unit (not shown). In the case of the key shown in FIG. 43A, it is determined whether the cursor right movement key 146 has been pressed (S301), and if it has been pressed, 1 is added to the cursor counter (S302). Next, it is determined whether the cursor left movement key 147 has been pressed (S303), and if it has been pressed, 1 is subtracted from the cursor counter (S304).

A search can be performed by moving the cursor and selecting a screen. FIG. 42 (c) shows a state in which the sixth program has been selected. Here, it is determined whether the search key has been pressed (S305).
If pressed, search index position (S208),
Play back (S209). The search execution key is a dedicated button,
The button may also be used as the playback button, or the left and right movement buttons may be pressed simultaneously. When the reproduction is performed and the desired program can be confirmed, it is determined whether to stop the apparatus (S210).

In search key input determination S305, no search key is input, and in screen change key input determination S211
When the screen change key is pressed, the program search screen shown in FIG. 35A is displayed on one program screen other than the multi-screen (S212). FIG. 35 (a) shows a display when the screen change key is pressed after selecting the third program with the cursor in FIG. 42 (c). The image signal to be displayed here is reproduced on the search screen 1523 of the third program at the beginning of the tape and is displayed in the pause mode.

The character generation display section 125 changes the screen to the screen shown in FIG. 35 (b), selects the display of the program number 3, the scale display 134 indicating that the number of sub-indexes is 3, and the horizontal position of the scale. The cursor 135 is displayed.
Although the cursor is in the middle of the scale in the figure, the initial value is 1
The position of (first sub-index) is set (S206), and the screen of FIG. 35 (c) in which the image and the character are superimposed is displayed on the TV receiver 108 (S207).

The sub-index in the third program is selected by moving the cursor 135 on the screen display of FIG. 35 (c) with the left / right movement key (S300) and searched (S208). In the figure, there are four marks on the scale 134, which correspond to the program index I3, the first sub-index J1, the second sub-index J2, and the third sub-index J3 from the left side of the screen. By moving the cursor to this position, Figure 36
The corresponding index position in the area 155 shown in FIG. When a sub-index is searched, a high-speed search is performed by address up to the first index position of the program, and after this is detected, a sub-index is searched in the recording area of the program.

As described above, according to the fourteenth embodiment, the image at the index recording position of the program recorded on the tape is displayed as a screen for searching, and the data of the program number and the number of sub-indexes are superimposed on this screen. A control means for displaying, moving a selection symbol on this screen to select, search, and reproduce a program and sub-indexes in the program is provided. , The basic operation of the image recording / reproducing apparatus is greatly facilitated.

[0176]

Effect of the Invention The present onset Ming, because the child screen of multi-screen used to search for the program is automatically selected memory, omitted the tedious task of typing the index manually while checking the contents to play the program it can. Also, in the present invention, when a procedure for creating a multi-screen at the time of recording is adopted, there is an advantage that image deterioration of the multi-screen is less than when a multi-screen is created from a reproduction signal. If you take the procedure to create a multi-screen during the waiting time of, there will be no waiting time when creating a multi-screen,
As a result, a user-friendly recording / reproducing apparatus can be obtained.

[Brief description of the drawings]

FIG. 1 is a diagram showing a conventional tape format.

FIG. 2 is a diagram showing a conventional tape format.

FIG. 3 is a block diagram of a conventional magnetic recording / reproducing apparatus.

FIG. 4 is a block diagram showing a conventional magnetic recording / reproducing apparatus.

FIG. 5 is a block diagram of a conventional magnetic recording / reproducing apparatus.

FIG. 6 is a diagram showing a display pattern on a conventional television receiver.

FIG. 7 is a circuit block diagram of the recording / reproducing apparatus of the present invention.

FIG. 8 is a circuit block diagram of the recording / reproducing device of the present invention.

FIG. 9 is a circuit block diagram of the recording / reproducing device of the present invention.

10 is a table showing the states of the recording / reproducing apparatuses shown in FIGS. 7 to 9 and the correspondence between tape formats and switches.

FIG. 11 is a table showing states of the recording / reproducing apparatuses shown in FIGS. 7 to 9 and correspondences between tape formats and switches.

FIG. 12 is a diagram showing a tape format of the recording / reproducing apparatus shown in FIGS. 7 to 9;

FIG. 13 is a diagram showing a tape format of the recording / reproducing apparatus shown in FIGS. 7 to 9;

FIG. 14 is a block diagram of another magnetic recording / reproducing apparatus of the present invention.

FIG. 15 is a diagram showing a display example of a multi-screen.

FIG. 16 is a block diagram of still another magnetic recording / reproducing apparatus according to the present invention.

FIG. 17 is a diagram illustrating an example of storage contents of a linear time counter storage unit.

FIG. 18 is a diagram illustrating another example of the storage content of the linear time counter storage unit.

FIG. 19 is a block diagram showing a configuration of still another magnetic recording / reproducing device of the present invention.

FIG. 20 is a control flowchart for creating a multi-screen.

FIG. 21 is a diagram showing a screen.

FIG. 22 is a block diagram showing a configuration of still another magnetic recording / reproducing apparatus of the present invention.

FIG. 23 is another control flowchart when creating a multi-screen.

FIG. 24 is a block diagram showing a configuration of still another magnetic recording / reproducing device of the present invention.

FIG. 25 is a further control flowchart when creating a multi-screen.

FIG. 26 is a block diagram showing a configuration of still another magnetic recording / reproducing device of the present invention.

FIG. 27 is a further control flowchart for creating a multi-screen.

FIG. 28 is still another control flowchart when a multi-screen is created.

FIG. 29 is a further control flowchart when creating a multi-screen.

FIG. 30 is a diagram showing a multi-screen.

FIG. 31 is a further control flowchart when a multi-screen is created.

FIG. 32 is still another control flowchart when creating a multi-screen.

FIG. 33 is a block diagram showing a configuration of still another magnetic recording / reproducing device of the present invention.

FIG. 34 is a diagram showing storage contents of a data memory.

FIG. 35 is a diagram showing an example of a screen display.

FIG. 36 is a diagram showing a recording pattern.

FIG. 37 is a block diagram illustrating a configuration of a character generation display unit in FIG. 33.

38 is a data configuration diagram of a video RAM in FIG. 37.

39 is a data configuration diagram of a character ROM in FIG. 37.

FIG. 40 is a diagram illustrating an example of serial data of a control unit in FIG. 33;

FIG. 41 is a flowchart showing a control flow of a control unit in FIG. 33.

FIG. 42 is a diagram showing another example of the screen display.

FIG. 43 is a diagram showing operation buttons.

[Explanation of symbols]

28 Format detection circuit 36 Format switching circuit 38 Format detection signal generation circuit 51 Operation unit 52 Control unit 53 CTL signal processing circuit 56 Index discrimination circuit 58 Regeneration circuit 59 memory 62 Recording circuit 65 Linear time counter display 66 Linear time counter storage 93 Superimpose circuit 94 Program data memory circuit 95 Control unit 97 Image correlation detection circuit 109 Image signal memory 124 data memory 125 character generation display 127 control unit

──────────────────────────────────────────────────続 き Continued on the front page (31) Priority claim number Japanese Patent Application No. 4-289664 (32) Priority date October 1, 1992 (1992.1.10.) (33) Priority claim country Japan (JP) (72) Inventor Keiji Hatanaka 1 Baba Zojo Station, Nagaokakyo-shi, Kyoto Mitsubishi Electric Co., Ltd.Electronic Product Development Laboratories Kihei Ido, inventor, 72 inventor, Baba Zhousho, Nagaokakyo, Kyoto, Japan Mitsubishi Electric Corporation Mitsubishi Electric Corporation (72) Inventor, Ken Takeshi Onishi 1 Baba Zhou, Nagaokakyo, Kyoto, Japan Mitsubishi Electric Corporation Inside the Electronic Product Development Laboratory (72) Inventor Kenji Shiroshita 1 Baba Zoshosho, Nagaokakyo-shi, Kyoto Mitsubishi Electric Corporation Electronic Product Development Laboratory (56) References JP-A-4-11 7686 (JP, A) JP-A-63-244983 (JP, A) JP-A-3-224152 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04N 5 / 76-5 / 956

Claims (7)

(57) [Claims] 1. A recording apparatus for recording a plurality of programs on a recording medium, wherein each of the programs is distinguished by an index signal, and means for recording a list display screen for selecting one of the programs is provided. The list display screen is constituted by a screen after a predetermined time from the index signal , has a scheduled recording function,
Approximately after the end of recording, means for recording the list display screen
A recording apparatus characterized in that the power supply is turned off after the operation . 2. A recording apparatus for recording a plurality of programs on a recording medium, wherein each of the programs is distinguished by an index signal, and a means for recording a list display screen for selecting one of the programs is provided. The list display screen is configured by an image when the broadcast audio mode changes to a predetermined audio mode, and / or the index signal is added when the audio mode changes to the predetermined audio mode. And has a scheduled recording function.
Turn off the power after operating the means for recording the display screen
A recording device characterized by being configured as described above . 3. The recording apparatus according to claim 2, wherein the predetermined audio mode is one of a stereo mode, a monaural mode, and a bilingual mode. 4. A recording apparatus for recording a plurality of programs on a recording medium, wherein each program is distinguished by an index signal, and means for recording a list display screen for selecting one of the programs is provided. The list display screen is configured by an image when the temporal correlation of the image signal is equal to or less than a predetermined value, and / or the index signal is assigned when the temporal correlation of the image signal is equal to or less than a predetermined value. is configured to be, has a reservation recording function, after the timer recording ends, the table
Turn off the power after operating the means for recording the display screen
A recording device characterized by being configured as described above . 5. A recording apparatus for recording a plurality of programs on a recording medium, wherein each of the programs is distinguished by an index signal, and means for recording a list display screen for selecting one of the programs is provided. The list display screen is constituted by images for each time obtained by equally dividing the time for performing the scheduled recording and / or the recording time of the already recorded program by the number equal to or less than the number of the list display screens, and / or The recording device is characterized in that the index signal is added at every time when the time for performing the recording and / or the recording time of the already recorded program is equally divided by the number equal to or less than the number of the list display screens. 6. A recording apparatus for recording a plurality of programs on a recording medium, wherein each of the programs is distinguished by an index signal, and means for recording a list display screen for selecting one of the programs is provided. A recording apparatus characterized in that the number of representative screens of each program displayed on the list display screen is changed in accordance with a time for performing scheduled recording and / or a recording time of a recorded program. 7. A schedule recording function, wherein after the scheduled recording is completed, the power supply is turned off after the means for recording the list display screen is operated.
7. The recording device according to 5 or 6 .