JPH06168545A - Recording/reproducing device - Google Patents

Abstract

PURPOSE:To provide the summary of the recording content of each program in a short time by recording parts displaying the characteristics of the video and sound signals of each program on an area immediately after a tape is started by a second format. CONSTITUTION:When a recording is made on the tape, whether an input signal is the one from an outside input terminal 91 or the one from a receiving circuit 92 for TV broadcasting and an output signal from an image signal memory circuit 79 is the one passing through a switch 8 and a superimposing circuit 93 or not are selected by a recording signal selecting switch 85, therein outputs are inputted to a recording circuit 82, transformed into a signs for recording on a magnetic tape here, passed through a recording/reproducing changing switch 83, supplied to the head of a travel controlling section 77 and recorded on the tape. The motor drive servo circuit 76 is controlled by a controlling section 95, the motor of the travel controlling section 77 is driven, the record traveling of the tape is started and a controlling pulse is generated.

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, the problems to be solved by the invention
Japanese Laid-Open Patent Publication 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 of the entire magnetic tape according to this 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, which are divided into video data, audio data, servo pilot signals, and subcode areas in order from the track start portion. The subcode area is further divided into a data detection synchronization area (SYNC), a track number area (ID), a graphic area, character data area (additional data), and an error correction code recording area (parity). Has been done.

FIG. 2 shows the arrangement of recording areas of respective recording signals on the entire tape (P1), (P2), to (P2).
n) is a recording area for n video and audio programs,
(A1), (A2) to (An) are recording areas for additional data of the above n programs. Further, the tape has an area for recording video data and audio data in the width direction (S1).
And an area (S2) for recording additional data, and an area (A) for collecting and recording additional data of each program in the length direction and a normal recording area other than that. 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 the data regarding the recorded contents of the tape at the start end portion of the tape, there are the following in the VHS type analog VTR. That is, one screen of a reproduced video signal is converted into digital data by an A / D converter and stored in a memory.
Each screen is shrunk so that it fits in the screen, and then multi-screen display is performed, and this is insert-recorded at the beginning of the tape. At the time of reproduction, this insert-recorded screen is reproduced to obtain information on the recorded contents.

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

In the case of Japanese Unexamined Patent Publication No. 3-217179, since it is configured as described above, only the additional data can be reproduced at the tape start portion, and the video data and the audio data recorded on most of the tape are completely absent. It is a problem that it cannot be confirmed, and in order to make these confirmations, it is necessary to run the tape to the recording position of the data based on the additional data and then reproduce it, which is troublesome and time consuming. Met. 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, which is difficult to see and the voice cannot be confirmed.

Further, the method of recording a part of the data of each program at the beginning of the tape in the same format as the recording format of each program in the digital VTR has the following problems. That is, in general, the content of a video signal can be sufficiently discriminated in one frame or one field, while the content of an audio signal is the same as that of the video signal,
That is, the contents cannot be discriminated at all in 1/30 seconds or 1/60 seconds, and at least several seconds or more are required for the discrimination. Further, it is desirable that the data at the beginning of the tape can be confirmed in the shortest possible time. 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 of the video signals are required to confirm the contents. It is also a problem that is a useless record.

The conventional magnetic recording / reproducing apparatus will be described below.
It will be described with reference to FIG. 3 showing the configuration. In recent years, the number and contents of the programs recorded in the magnetic recording / reproducing apparatus have to be written on a label or the like or stored by a user. A method of searching for a program by the conventional magnetic recording / reproducing apparatus will be described below. First, the operation during recording will be described. At the time of recording, the index signal is recorded at the beginning of the program to be recorded, particularly at the portion to be searched for during reproduction. The index signal is automatically recorded at the start of recording, but it can be arbitrarily recorded.

In this case, the index signal is recorded 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 controls the CTL signal processing circuit 53.
To control. The CTL signal processing circuit 53 records an index signal in which the duty ratio of the CTL signal (control signal at the beginning of each program) is changed 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 the index search keys in the forward and reverse directions of the operation unit 51. For example, when the forward index search key 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. The CTL signal reproduced at this time is input to the index discriminating circuit 56, and when the index signal is found, the index finding signal is sent to the control unit 52. When the control unit 52 receives the index discovery signal, it controls the motor drive servo circuit 54 and the reproduction circuit 58 as follows.

The motor drive servo circuit 54 causes the traveling mechanism 55 to stop fast-forwarding, rewind to the portion where the index signal is recorded, and then enter the reproduction mode. In the reproduction mode, the reproduction circuit 58 amplifies the signal reproduced from the head, restores the original video signal, and outputs the original video signal. This is T
The search is completed by displaying on the V receiver 64. Here, if the user presses 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.

In addition to the above, the following search 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 expressed as an absolute address, and the user can directly search for the program even when searching, by inputting this address information. The other is that the duty ratio of the CTL signal is finely controlled to obtain linear time counter information.
This is a method in which the recording time is recorded on a tape and the user can directly search the program at the time of searching by inputting the counter value at the beginning of the program.

Since the conventional magnetic recording / reproducing apparatus is constructed as described above, when the user searches for a program he or she wants to see, 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 in that it is necessary to perform an operation while looking at it, which imposes a heavy burden on the user. Also, when the program is directly selected, C
In order to finely control the duty ratio of the TL signal, an encoder and a decoder for address information and linear time counter information are required, which increases the circuit scale and is expensive.

In recent years, devices for recording and reproducing image signals, such as video tape recorders, have been widely used in homes or broadcasting stations, and at the same time, cassette tapes, which are recording media, have been widely used in general homes. Therefore, there is a need for a simple and convenient method and apparatus that can confirm and search the recorded contents of a cassette tape. Conventionally, there is a magnetic recording / reproducing apparatus disclosed in Japanese Patent Laid-Open No. 63-4478 as an apparatus for confirming and searching recorded contents by creating a multi-screen from image signals. It is explained as follows.

FIG. 4 is a block diagram showing this conventional magnetic recording / reproducing apparatus. First, at the time of recording, at the start of recording, particularly at the time of recording, the address is set by the operation unit 71 at the tape position where the tape position is to be detected, and the drive 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 on 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 in order to put the traveling mechanism unit 77 into a high-speed traveling state. The traveling mechanism unit 77 starts high-speed traveling in the sub-loading state. The control signal duty discriminating circuit 73 amplifies the reproduced control signal and discriminates the duty ratio even when traveling at a high speed, and if there is address information, outputs the address information recorded on the magnetic tape to the control unit 72.

When the control section 72 inputs the address information, the control section 72 sets the motor drive servo circuit in order to put the traveling mechanism section 77 into the reproduction state.
The command is output to the 76 and the reproduction circuit 75. When the traveling mechanism 77 is in the reproduction state, the motor drive servo circuit 76 controls the motors such as the capstan motor and the cylinder motor according to the reproduction control signal. The reproducing 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 playing for a certain period of time, the high-speed running state is set again.

By repeating the above operation several times, the image information of the positions 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 whole or all of the magnetic tape is finished, and when detected, outputs a command to the motor drive servo circuit 76 so as to return to the start end of the magnetic tape. When the magnetic tape reaches the leading end, the traveling mechanism unit 77 is set in the recording state.

In order to record the contents stored in the memory circuit 79 on the magnetic tape, the memory circuit 79 and the recording circuit 82 are connected by the recording signal changeover switch 84 and the recording / reproduction changeover switch is connected.
At 83, the recording circuit 82 is connected to the head for recording. When the tape position is searched next, the reproduction video signal is displayed on the TV receiver 78 at the same time as the beginning of the magnetic tape is stored in the memory, and the address for the next tape position search is set by the image information and the address information to run at high speed.

When the set address and the address information recorded on the magnetic tape become equal, the control section 72 brings the device into a reproducing state.
When the reproduction state is reached, the reproduction signal changeover switch 81 is changed over so that the video signal output from the reproduction circuit 75 is transmitted to the TV receiver 78.
Projected on. When the tape position is searched again, the reproduction signal changeover switch 81 is switched to display the video signal from the memory circuit 79 on the TV receiver 78, and the address for the tape position search is set to run at high speed. The above operation is performed to search the tape position.

The above-described conventional magnetic recording / reproducing apparatus reproduces an image signal at a position where an index signal is additionally recorded on a recorded magnetic tape by a manual operation, and creates a multi-screen from this, so that a multi-screen is produced. In order to make, 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 troublesome and time consuming.

In another known method, that is, a method of automatically recording an index at the start of recording and then sequentially reproducing a position with the index to make a multi-screen, when a reserved recording is performed, Since commercial broadcasts are usually included before and after the broadcast, most of the places where the indexes are recorded are commercial broadcasts. Therefore, most of the multi-screens are commercial broadcast screens and cannot be used for searching.

Further, as a method for displaying the recorded contents of the cassette tape and performing a search, the image at the index position of the medium on which the image signal is recorded is stored in the memory, and then the image in the memory is displayed on the monitor screen for searching. There is something to use,
As an example, it is disclosed as follows in JP-A-63-102092.

FIG. 5 is a block diagram showing this conventional magnetic recording / reproducing apparatus. First, at the time of recording, at the tape position where you want to detect the tape position at the start of recording or especially at playback,
Press the cue signal driving switch of 101. Operation unit 101
The control unit 102 inputs switch information from the control recording signal processing circuit 104 and outputs a heading signal writing command to the control recording signal processing circuit 104. The control recording signal processing circuit 104 records the control recording signal whose duty ratio is changed on the magnetic tape in accordance with this 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 inputs the switch information from the operation unit 101 and outputs a command to the motor drive servo circuit 106 in order to put the traveling mechanism unit 107 into a high-speed traveling state. Travel mechanism 107
Starts high-speed running in the sub-loading state. Even during high-speed traveling, the control signal duty discrimination circuit 103 amplifies and waveform-shapes the reproduced control signal to discriminate the duty ratio, and when detecting the cue signal, outputs the presence or absence of the cue signal to the control unit 102.

The control unit 102 inputs the presence / absence of a cue signal, and if there is a cue signal, it first stores the tape count value from the counter 112 at that time and stores the tape count value in the motor drive servo in order to bring the traveling mechanism unit 107 into 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 turned on.
The motor drive servo circuit 106 controls a motor such as a capstan motor or a cylinder motor according to a reproduction control signal.

The reproducing circuit 105 amplifies the signal reproduced from the head, restores it to the original video signal, and outputs it to the memory circuit 109. After the image information is output, the control unit 102 issues a command to 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
According to the instruction of 102, the memory circuit 109 is controlled so that a reduced image of a large screen at the time of reproduction is stored in a part of the memory circuit 109.

FIG. 6 is a display pattern diagram on the television receiver. The upper left portion ADR. The data is stored in a part of the memory circuit 109 corresponding to 1. After the writing in 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.

By repeating the above operation several times, the reduced image of the large screen at the time of reproducing the position where the cue information is recorded is 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 all of the magnetic tape is finished.
2 detects and outputs a command to the motor drive servo circuit 106 to stop the magnetic tape when detected. At this time, the reproduction signal selector switch 111 is the memory circuit 109.
, And the video signal from the memory circuit 109 is displayed on the television receiver 108 as shown in FIG.

Next, when the tape position is searched, the switch of the ADR number for the next tape position search is operated from the video from the memory circuit 109 displayed on the television receiver 108 by the operation unit 10.
Press with 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 in the reproduction state, the switch 111 is switched to display the signal from the reproduction circuit on the television receiver 108. When the tape position is searched 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 read this number on the operation unit 101. Search is performed by setting it against.

Since the above-described conventional magnetic recording / reproducing apparatus is configured as described above, in order to actually perform the search, the operation of reading the number of the address of about 1 to 5 digits from the screen and the operation thereof are performed. It was troublesome because the work of inputting to the means was necessary. When the number of multi-screens increases, for example, when the number of sub-screens is 16, it is necessary to read at least a 2-digit number from the screen and input it from the operation unit 101. Since the number of digits increases, there are many hidden parts of the image that are hidden by the numbers, making it difficult to see, which is not convenient.

As another publicly known example, there is a method of using operation buttons that correspond one-to-one to the arrangement of the sub-screens as a method of instructing the search destination on the multi-screen, but a dedicated button is required and the cost is high and the number of screens When there are many, 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 beginning of the tape even if recording is carried out for a long time. However, it is another object of the present invention to provide a recording / reproducing apparatus that can realize a so-called table of contents using 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 and confirm the contents of both the program being recorded and the program already recorded, including reserved recording, without the user's trouble and time. It is to provide a recording / reproducing apparatus capable of performing a search.

Still another object of the present invention is to correspond to an image of the background of the retrieved information by almost simply keeping an eye on the television screen by performing a simple button operation while looking at the characters and symbols superimposed on the screen of the retrieval information. It is an object of the present invention to provide a recording / reproducing device that can easily search for and reproduce a recording unit.

[0037]

According to a first recording / reproducing apparatus of the present invention (claims 1 to 4), a first format which is a normal recording format and audio data or additional data for video data are provided. Means for switching and recording a second format having a different ratio, a signal generating circuit for distinguishing the first format from the second format, and a first format and a second format from the reproduced signal. And a format detection circuit for distinguishing

A second recording / reproducing apparatus of the present invention (claim 5) has index signal recording means for recording the index signal at the beginning of each program at the time of recording, and at the time of retrieval,
Means for judging the order in which each program is recorded from a certain reference point on the tape, means for reducing the first screen of each program on a multi-screen in which one screen is subdivided, and displaying the list, Means for selecting one of the programs displayed on the multi-screen, means for determining the position of the reference point, and means for counting the index signal are provided, and the program selected on the multi-screen is the reference point. It is configured to automatically search by counting the number of index signals from.

According to a third recording / reproducing apparatus of the present invention (claim 6), in the second recording / reproducing apparatus, a tape forward / reverse traveling direction judging means is provided, and a program of which position from the reference point is currently set. Configure to determine if there is.

A fourth recording / reproducing apparatus of the present invention (claim 7) has a linear time counter display means for counting the CTL signal and displaying the recording / reproducing time, and at the time of recording, an index signal is provided at the beginning of each program. Means for storing the linear time counter value at the beginning of each program counted from a certain reference point on the tape at the time of retrieval and one screen at the beginning of each program. A means for reducing and displaying a list on a subdivided multi-screen, a means for selecting one of the programs displayed on the multi-screen, and a means for determining the position of a reference point are provided, and the selection is made on the multi-screen. Automatically search the created program by the linear time counter value from the reference point and the linear time counter value at the beginning of the stored program. To configure.

A fifth recording / reproducing apparatus of the present invention (claim 8) has a linear time counter display means for counting the CTL signal and displaying the recording / reproducing time, and an index signal is provided at the beginning of each program during recording. A means for storing index signal recording means for recording, a means for storing a linear time counter value at the beginning of each program counted from a certain reference point on the tape at the time of retrieval, and a 1 at the beginning of each program.
A means for reducing and displaying a list on a multi-screen in which one screen is subdivided, a means for selecting one of the programs displayed on the multi-screen, and a means for determining the position of a reference point are provided. , The program selected on the multi screen is searched up to near the beginning of the selected program by the value of the linear time counter from the reference point and the value of the linear time counter at the beginning of the stored program, and then the selected program The search is automatically performed by detecting the index signal.

A sixth recording / reproducing apparatus of the present invention (claim 9).
Is a memory means for storing image information of one field or one frame, a memory control means for synthesizing a plurality of image information as a multi-screen by thinning out the image information and writing it in a part of the memory, and reproduction or high-speed running. And a control means for driving the vehicle continuously for a predetermined time after detecting the index signal, and then reproducing image information and storing the image information in the memory.

A seventh recording / reproducing apparatus of the present invention (claim 1
0, 11) memory means for storing image information of one field or one frame, memory control means for synthesizing a plurality of image information as a multi-screen by thinning out the image information and writing it in a part of the memory, audio And a control means for automatically recording the index and / or storing the image signal in the memory when the mode is changed to a predetermined audio mode of stereo, monaural, bilingual and the like.

An eighth recording / reproducing apparatus of the present invention (claim 1
2) Memory means for storing one field or one frame of image information, memory control means for synthesizing a plurality of image information as a multi-screen by thinning out the image information and writing it in a part of the memory, And a control means for calculating the correlation between the data and the data of the image signal to be recorded or reproduced and recording the index and / or storing the image signal in the memory if the correlation is less than a predetermined value.

A ninth recording / reproducing apparatus of the present invention (claim 1
3) Memory means for storing one field or one frame of image information, memory control means for synthesizing a plurality of image information as a multi-screen by thinning out the image information and writing it in a part of the memory, and reserved recording. And a control means for recording the index and / or storing the image signal in the memory at each time when the time to be performed is equally divided by the number of the multi-screens or less.

A tenth recording / reproducing apparatus of the present invention (claim 1
4) Memory means for storing one field or one frame of image information, memory control means for synthesizing a plurality of image information as a multi-screen by thinning out the image information and writing it in a part of the memory, and a recorded program And a control means for recording the index and / or storing the image signal in the memory at every time when the recording time of (1) is approximately equally divided by the number of the multi-screens.

An eleventh recording / reproducing apparatus of the present invention (claim 1
5) Memory means for storing one field or one frame of image information, memory control means for synthesizing a plurality of image information as a multi-screen by thinning out the image information and writing it in a part of the memory, and reserved recording. A control means for setting the number of the multi-screens to be equal to or more than a quotient obtained by dividing the numerical value of the time to be performed by a predetermined time value, and recording the index and / or storing the image signal in the memory at the predetermined time. Prepare

A twelfth recording / reproducing apparatus of the present invention (claim 1
6) Memory means for storing one field or one frame of image information, memory control means for synthesizing a plurality of image information as a multi-screen by thinning out the image information and writing it in a part of the memory, Control means for setting the number of the multi-screens to be equal to or more than a quotient obtained by dividing the numerical value of the recording time of the program by a predetermined time value, and recording the index and / or storing the image signal in the memory at the predetermined time. With.

A thirteenth recording / reproducing apparatus of the present invention (claim 1
7), the sixth to twelfth recording / reproducing apparatus further has a reserved recording function, and is configured to operate a predetermined control means after the reserved recording is completed and thereafter turn off the power.

A fourteenth recording / reproducing apparatus of the present invention (claim 1
8), image signal recording and reproducing means, index recording and reproducing means, field or frame memory, data memory, character generating and displaying means, control microcomputer, etc. A control unit for performing a predetermined operation on the recording unit of the image signal based on the above position data is provided.

A fifteenth recording / reproducing apparatus of the present invention (claim 1
9), image signal recording / reproducing means, index recording / reproducing means, field or frame memory, multi-screen creating means, data memory, character generating / displaying means, control microcomputer, etc. A control unit is provided for performing a predetermined operation on the recording unit of the image signal corresponding to the child screen in the multi-screen based on the position data on the screen of the character superimposed on the image signal.

[0052]

In the first recording / reproducing apparatus, the portion representing the characteristics of the video signal and the audio signal of each program recorded in the area of the first format of the tape is provided in the area immediately after the start of the tape with graphic or character data. At the same time, by recording in the second format, a summary of the recorded contents of each program in the area of the first format can be obtained in a short time.

In the second recording / reproducing apparatus, a list of program contents is displayed using a multi-screen, and the program is searched by selecting it, which has good operability, and a circuit of a search circuit for searching by an index signal. The scale is small and the cost can be reduced.

In the third recording / reproducing apparatus, since it is possible to know which program position on the tape is present once the multi-screen is generated, it is possible to search from any program position on the tape, and any number of times. Since it can be searched, operability is improved.

In the fourth recording / reproducing apparatus, a list of program contents is displayed using a multi-screen, and the program is searched by selecting the list, so that the operability is good and the CTL
Since the linear time counter that counts the signal is used for the search, the search can be performed with extremely high accuracy and the CTL.
Since the search is performed using the value of the linear time counter that counts signals, the circuit scale of the search circuit is small and can be constructed at low cost.

In the fifth recording / reproducing apparatus, a list of program contents is displayed using a multi-screen, and the program is searched by selecting the list, so that the operability is good.
The linear time counter searches near the program, and then the index signal is used to find the beginning of the program.
The influence of the deviation of the linear time counter due to the skip of the reading of the TL signal is reduced, and a very highly accurate search can be performed. Further, since the counter value at the beginning of each program need only be searched up to the neighborhood, the memory of the means for storing the counter value can be saved. Further, since the search is performed using the value of the linear time counter that counts the index signal and the CTL signal, the circuit scale of the search circuit is small and the cost can be reduced.

In the sixth recording / reproducing apparatus, a cassette tape having a plurality of reserved recordings and an index recorded at the recording start portion of the reserved recordings is reproduced from the index when reproducing the multi-screen. By reproducing the tape position after a fixed time and storing it in the memory, it is possible to create a multi-screen that does not include the first commercial image of the broadcast. For this reason, a multi-screen can be created without performing an indexing operation, which facilitates the organization and retrieval of cassette tapes.

In the seventh recording / reproducing apparatus, 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 set. For example, the index signal is recorded when the broadcast is changed to a predetermined audio mode in the case of different sounds such as bilingual sound and stereo sound, that is, when the broadcasting is changed to bilingual mode in this example,
By reproducing the index signal recording location later to create a multi-screen, the image at the program start location can be accurately displayed on the multi-screen. Also, it is possible to record an index and create a multi-screen in parallel with the reserved recording, and if the data in the image memory is held, the multi-screen can be immediately displayed from the memory later, which is convenient. Further, in this case, since the multi-screen is created from the signal to be recorded, there is also 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 the eighth recording / reproducing apparatus, when recording or reproducing is performed, the time correlation of the image signal is obtained, and if this value is smaller than a predetermined value, the index is recorded as a place where the content of the signal greatly changes. Alternatively, by writing the image signal on the multi-screen, the multi-screen can be created from the image at the transition point of the movie scene or the connecting position of the cuts taken by the camera, which facilitates the accurate grasp of the contents and the editing work.

In the ninth recording / reproducing apparatus, when the broadcast program is reserved and recorded, all the predetermined number of multi-screens are used for searching. For example, the number of multi-screens is 12 and the recording time thereof is 12. If it is one hour, by writing on the multi-screen every 5 minutes that divides one hour into 12 equal parts, the contents of the program recorded by the scheduled recording are displayed using the entire reduced screen of the multi-screen, so the number of screens is reduced. It is the largest number and is easy to understand and easy to search.

In the tenth recording / reproducing apparatus, the default number of multi-screen screens is used for the search for the recorded program. For example, the number of multi-screens is 12, and the recorded program 1 if the recording time is 1 hour
By writing to the multi-screen every 5 minutes that divides the time into 12 equal parts, the contents of the recorded program are displayed using the entire reduced screen of the multi-screen, so the number of screens is the largest and it is easy to understand and search. is there.

In the eleventh recording / reproducing apparatus, the number of screens of the multi-screen is changed according to the recording time when writing to the multi-screen from the program of the reserved and recorded broadcast program at regular intervals. When the recording time is long, the shortage of the number of multi-screens can be prevented compared to the case when the recording time is constant. The contents are easy to confirm and the search is easy.

In the twelfth recording / reproducing apparatus, the number of multi-screens is changed according to the time of the program when the recorded program is written in the multi-screen at regular intervals. Compared to the case, if the recording time is long, the number of multi-screen screens can be prevented from running out, and if the recording time is short, the number of multi-screen screens can be reduced, so the reduced screen is relatively large and the recorded content can be confirmed. Easy to search and easy to search.

In the thirteenth recording / reproducing apparatus, conventionally, after the reserved recording is performed, a multi-screen is created from an already recorded program by a predetermined means in a free time when the power is turned off. If you hold it, you can immediately use the multi-screen when using the device later. In particular, the time-saving effect is great when creating a multi-screen by combining the recording of reserved recording and the recording before that, or when there are many screens.

In the fourteenth and fifteenth recording / reproducing apparatuses, when recording an image signal (hereinafter referred to as a program) of one program of television broadcasting, an index for performing a program search is simultaneously recorded at the start of recording the program, In the program, an index (hereinafter referred to as a sub index) for searching a scene is recorded. The position of the index and the number of sub-indexes are stored in the data memory. When creating an image for searching, the image at the index recording position is stored in the memory and recorded at the beginning of the tape. If there are multiple indexes, the corresponding multiple images are recorded at the beginning of the tape. When performing a search, play the beginning of the tape, store the playback image in memory, and display it on the screen.
The data in the data memory is superimposed and displayed as characters on this.

When the screen corresponding to one index is displayed, the same number of characters as the number of sub-indexes in the program are displayed in a line, and one of them is selected by the move button to perform search and reproduction. When the images at multiple index positions are reduced and combined and displayed in a multi-screen, select one by displaying the characters on the sub-screen of the multi-screen and move the characters with the move button to display the sub-screen. Select and search for the desired program to play. In this way, a program search can be easily performed simply by operating the character movement button while looking at the screen. Further, the same operation can be performed when there are a large number of indexes or when there are sub-indexes, and there is no need to increase the number of buttons or the number of digits of the specified address as in the conventional example.

[0067]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing the embodiments thereof. Example 1. An embodiment of the present invention will be described below with reference to the drawings. 7 to 9 are circuit block diagrams of the device of the present invention, and FIGS. 10 and 11 show the relationship between the state name, tape format, and switch connection in the device of FIGS. 7 to 9.

When recording in the first format,
In the recording system 1 of FIGS. 7 to 9, the analog video signal input from the input terminal 2 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, After passing through the switch 45, the error correction code addition circuit 5 adds the error correction code used in the reproduction system 20. The analog voice signal input from the input terminal 6 is converted into a digital signal by the A / D converter 8, passes through the switch 46, and then an error correction code is added by the error correction code adding circuit 7.

In the error correction code adding circuit 9, additional data,
That is, the analog signal input from the input terminal 10 becomes the graphic data binary-coded by the binarization circuit 12, and the data amount of which is reduced by the data compression circuit 13.
At the same time that the character code signal input from, the signal such as the time code signal input from the input terminal 16, and the signal indicating the format output from the format detection signal generation circuit 38 according to the instruction from the format switching circuit 36 are transmitted, A control signal from the changeover switch 11 is sent. Here, the changeover switch 11 selects whether to use the 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, and switches the data series generated by the multiplexer 15 in accordance with the format, and at the same time generates the format detection signal. Circuit 38 directs to generate a signal indicating the format. An error correction code is added to these data in the error correction code addition circuit 9, and the output thereof is input to the multiplexer 15 together with the output signals from the error correction code addition circuit 5 and the error correction code addition circuit 7, and the first type A recording sequence of video data, audio data, and additional data is generated so as to match the track format of, and is converted into a pattern signal recorded on the tape by the recording encoding circuit 17, which is amplified by the recording amplifier 19 and recorded / recorded. Recording is performed on the magnetic tape T by the head 21 through the reproduction switch 18. As shown in Fig. 10 and Fig. 11,
The above state is represented as M1 and the format to record is F
1. In both the switch 45 and the switch 46, the terminal c and the terminal a are connected. Further, the states of the switch 47, the switch 48, the switch 49, and the switch 50 do not matter.

In the reproducing mode, as shown in FIGS. 7 to 9, first, the data recorded on the magnetic tape T is read by the head 21 and is inputted to the head amplifier 25 in the reproducing system 20 via the recording / reproducing switch 18 and amplified. , Is input to the data decoding circuit 27 and decoded into a digital signal, and the TBC circuit
At 29, the jitter generated during recording / reproduction on the tape is removed and the data is byte-synchronized to be digital data, which is supplied 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, and the data decompression circuit 32 passes through the switch 47 to restore the uncompressed signal to the superimposing circuit 34. Audio signal error correction circuit 33
Error correction of voice data is performed in the switch 48
Is converted into an audio signal by the D / A converter 22 and sent to the output terminal 26.

In the subcode signal error correction circuit 35, error correction of the subcode signal is performed, and the additional data is sent to the graphic data expansion circuit 39 or the character generation circuit 41 to restore the recorded additional data and the switch 43 is restored. Be sent.
The switch 43 is opened / closed by the signal from the switch control signal generating circuit 37, and switching is performed as to whether or not the additional signal is added to the video signal in the superimposing circuit 34. The output of the superimposing circuit 34 is converted into a video signal by the D / A converter 23 and sent to the output terminal 24.

Further, a signal indicating the reproduced format is sent from the subcode signal error correction circuit 35 to the format detection circuit 28, and whether the magnetic tape T is recorded in the first format or the second format. And the result is sent to the TBC circuit 29 to automatically switch the byte synchronization of digital data 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 switch 45, the switch 46, the switch 49, and the switch 50 do not matter.

When the reproduced video signal and the reproduced audio signal are written in the memory, the video data output from the video signal error correction circuit 31 in the reproduction mode shown in FIGS. 7 to 9 is written in the memory 40 via the switch 49. The voice data output from the voice signal error correction circuit 33 is written in 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 and to the switch 49. The terminals c and b are both connected to the switch 50, and the states of the switches 45 and 46 are irrelevant.

When recording on the tape in the second format, the video and audio data written in the memory is read out and recorded, but the following points differ from the normal 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, is 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 voice 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 in the second format. As shown in FIGS. 10 and 11, the above state is represented as M11, the tape format is F2, and the switch 45 and the switch 46 are both connected to the terminal c and the terminal b. Switch 4
The state of switch 9 and switch 50 is irrelevant.

When the video and audio data written in the memory is read out 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, but the video data is read from the memory 40, input to the data expansion circuit 32 via the switch 47, and output from the audio signal error correction circuit 33. The output is not used, and the voice 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 as M14, and regardless of the tape format, both the switch 47 and the switch 48 are connected to the terminal c and the terminal b. Further, the states of the switch 45, the switch 46, the switch 49 and the switch 50 do not matter.

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

10 and 11 show the relationship between the operation mode of the apparatus of this embodiment, the state of the switch, and the tape format. Mode M1, mode M2,
In addition to mode M8, mode M11, and mode M14, mode M3 for writing the video data output from the high-efficiency encoding circuit 3 to the memory 40, mode M4 for writing the audio data output from the audio A / D converter 8 to the memory 42 , A mixed mode M5 of M3 and M4, a mode M6 for writing only reproduced video data to the memory, a mode M7 for writing only reproduced audio data to the memory, a mode M9 for reading only video data from the memory and recording it on the tape, an audio data only memory There is a mode M10 for reading out and recording on a tape, a mode M12 for reading out and reproducing only video data in the memory, and a mode M13 for reading out and reproducing only audio data in the memory.

12 and 13 show the tape format by the apparatus of the present embodiment. FIG. 12 (a) shows the first recording format F1, which is video data, audio data, servo in order from the track start portion. The pilot signal and the subcode are divided into respective areas, and the subcode area further includes a data detection synchronization area (SYNC), a track number area (ID), a figure, character data area (additional data), and Recording area for error correction code (parity)
Is divided into Here, a signal representing the format F1 is recorded in (ID).

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

Here, when a video signal of one frame is recorded as a characteristic scene of a program, an example of calculation of the amount of data of the signal is shown below. Sample rate of Y signal, RY signal and BY signal is 13.5MHz, 6.75MHz, 6.75MH, respectively.
The amount of data when sampling at 8 bits for z is (13.5M + 6.75M + 6.75M) x 8bit / 30 = 7.20Mbit

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 48 k × 16 bits × (1/30) = 25.6 when the time is 1/30 seconds and 5 seconds, respectively. kbit 48k × 16bit × 5 = 3.84 Mbit. Considering these values as the amount of data, it is sufficient to set the recording format assuming that the same amount of data can be recorded on the same area of the magnetic tape. If the ratio of these to the video data is taken, 7.20: 0.0256 = 281.25: 1 7.20: 3.84 = 1.875: 1.

In the first and second formats, the ratio of the lengths of the recording areas of video data and audio data in one track is set to the above numerical values. Here, when the amount of video data is significantly reduced by the high-efficiency encoding circuit 3, or when data compression is also performed in the audio system, the ratio of each data amount after applying these is replaced by the above numerical value. Can be applied to.

FIG. 13 shows the arrangement of recording areas of respective recording signals on the entire tape. The tape has an area (A) of the second format F2 in the length direction and a first format F1 thereafter. It is divided into two areas. Although there are areas (P1 ') and (A1) at the beginning of (A), (P1') is an area in which a video signal and an audio signal of one scene representing the characteristics of the program (P1) are recorded. A1) is an area in which additional data in characters or figures corresponding to the program (P1) is recorded. Subsequent areas (Pn '), (An)
Is also the same.

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

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

Example 2. Hereinafter, another embodiment of the present invention will be described with reference to FIG. 14 showing the configuration thereof. 14, the same parts as those in FIG. 3 are designated by the same reference numerals. Also, in FIG.
Is an example of a multi-screen display.

The method of dividing one tape into a plurality of programs by the index signal is the same as the conventional example, and the description thereof will be omitted. In this embodiment, first, the beginning of each program on the tape is displayed on the multi-screen. Hereinafter, a method of creating a multi-screen will be described. There are various possible methods for creating a multi-screen. For example, the search is started from the end of the tape, the index signal is searched, the screen at the beginning of the program is reduced by the playback circuit 58, and the memory control circuit 60 stores the memory. It can be created by controlling 59 and storing this reduced screen in the memory 59 and repeating this process until the tape starts. The programs detected at this time are stored in the memory 59 in order from the end of the tape, but the memory control circuit 60 controls so that the order is reversed at the point where the beginning of the tape is detected.

With this, it is possible to judge how many programs on the multi-screen hit the tape start end. This multi-screen can be displayed, for example, by recording it at the beginning of the tape and reproducing it from the next time. The recording location may be the beginning or end of the tape, but in reality, the first program recorded on the tape is mostly the beginning of the tape. For example, when the tape is recorded only halfway. Considering that, when a multi-screen is recorded at the end, the search time is often longer than that at the start.

Next, the reference point of the tape will be described. The reference point can be a point that exists 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 in the above. For example, when the tape start end is searched when the multi-screen is generated, or when the multi-screen recorded at the tape start end is reproduced, the tape start end is detected by the running mechanism unit 55, information is sent to the control unit 52, and the control unit
52 is now judged 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.
The control operation of the control unit 52 will be described below. 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 / reproducing changeover switch 57 to the recording side. At this time, the motor drive servo circuit 54 controls the traveling mechanism section 55 so that recording is performed from the start end 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 controller 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 start end and reproduced by the motor drive servo circuit 54. Playback circuit 58
Sends this to memory 59, which is the memory control circuit.
Controlled by 60, remember multi screen. Further, the stored multi-screen is read out from the memory 59 and the TV is displayed.
Display on the receiver 64.

The user looks at the multi-screen as shown in FIG. 15, selects the reduced screen of the program he wants to see, and operates the operation unit 51.
Enter more. The input method may be the number assigned to the reduced screen, or if the number is not displayed, the outer frame of the selected reduced screen is specified differently from the others, such as program No. 2 in FIG. 15, and selected. It may be done.

An example will be described below. For example, assume that the program No. 2 is selected. The selection information is input to the control unit 52 from the operation unit 51, and the control unit 52 enters the index search mode. If you display the multi screen now, you are at the beginning of the tape, which is the reference point. When searching for program No. 2 from here, the search may be performed in the fast-forward direction until the index is found twice. The search method is the same as that of the conventional example described above. In addition, the search can be similarly performed regardless of the program number.

Example 3. In the second embodiment, when the search is performed, the search is started from the reference point and the selected program No. is searched by counting the reproduced index signals. In other words, in order to perform a search, you must always return to the reference point. In the third embodiment, the control unit 52 determines which program is being reproduced from the reference point of the tape according to the number of detected index signals and the rotating direction of the tape at that time. With this, once a multi-screen is generated, the program can be cueed from anywhere on the tape until the tape is ejected, and any number of times with the multi-screen.

An example will be described. For example, it is assumed that the program No. 2 is searched now. It is assumed that the user continues to look at the reproduced image, and sees the program halfway through. At this time, the control unit 52 detects the index signal at the beginning of the program No. 3 during reproduction. The control unit 52 determines that the program has moved from No2 to No3 because the tape detected the index signal in the forward rotation. Also, program No3
The user rewinds in the middle of
Suppose that you have returned to o1. Since the control unit 52 detects the index signal twice in the reverse rotation, it determines that the program has moved from No3 to No1. Here the user has memory 59
When the multi-screen is displayed and the search is performed, for example, if program No. 4 is selected, the control unit 52 performs the search in the forward direction until the index signal is found three times. In this way, the control unit 52 can always search the tape from any place and many times by always judging the position of the program.

Example 4. Embodiment 4 of the present invention will be described below with reference to FIG. 16 showing the configuration thereof. 16, the same parts as those in FIGS. 3 and 14 are designated by the same reference numerals. Also,
FIG. 17 is a linear time counter storage unit according to the fourth embodiment.
It is an example of the stored contents of 66.

The method of generating a multi-screen and the reference point of the tape being the start end of the tape are the same as those in the second embodiment, and the description thereof will be omitted. In this 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, what is important is to reset the linear time counter once at the beginning, which is the reference point of the tape, and then create a multi-screen. As a result, this counter value displays the recording time from the beginning of the tape.

The operation of storing the linear time counter value will be described below. Multi-screen display operation information from the 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, the 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.

As an example, the linear time counter storage unit 66 stores the initial linear time counter value of each program as shown in FIG. In this example, the number of programs that can be stored in one tape is 7, but if it is desired to increase the number, it may be changed according to the amount of memory used. In the present embodiment, the counter information is stored in the memory, but it may be recorded at the beginning of the tape at the same time as the multi-screen and stored in the linear time counter storage unit 66 at the time of reproducing the multi-screen.

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

Next, the search operation will be described. In this embodiment, when displaying the multi-screen, the counter is reset at the same time when the starting 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 in the second embodiment, so the explanation 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 stores the program N from the linear time counter storage unit 66.
The counter value at the beginning of o2 is read. Next, the motor drive servo circuit 54 controls the running mechanism 55 to fast forward the tape.

The linear time counter display section 65 displays the linear time by counting the CTL signal even during fast-forwarding. The counter value is also input to the control unit 52, and the traveling mechanism unit 55 is controlled so that the reproduction is started from the point where the initial counter value of the read program No. 2 and the current linear time counter value become the same. The search is completed when the playback starts. Also, the program number
You can do the same search regardless of the number.

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

First, the outline of this embodiment will be described. In the present embodiment, the linear time counter value is searched up to the vicinity of the program, and then the index signal is used to find the beginning. In this way, the linear time counter storage unit 66
The data stored in can be accurately cued even if the storage capacity is reduced and the unit of seconds is 10 seconds as shown in FIG. Further, the influence of the skip of the index signal during the high-speed search or the shift of the linear time counter due to the skip of the CTL signal is reduced.

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

Next, the search operation will be described. The method of selecting the program No. to be searched is the same as that in the fourth embodiment, and the description thereof will be 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, a search operation is started, but this is also the same as that of the fourth embodiment, so a part of the description is omitted.

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

In the present embodiment, the linear time counter was searched up to the unit of 10 seconds, but the same effect can be obtained by using the unit of minute, for example. In this case, it takes a maximum of one minute until the index signal is found after the traveling mechanism unit 55 enters the reproduction 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. Even if it becomes, the mode is switched to the index search mode with fast-forwarding, and after that, the indexing is performed as in the second embodiment.

Example 6. The structure of the magnetic recording / reproducing apparatus in Example 6 is as shown in FIG. When recording on a tape, whether the input signal is the signal from the external input terminal 91 by the recording signal selection switch 85, the signal from the receiving circuit 92 for television broadcasting, or the output signal from the image signal memory circuit 79. Passes through switch 86 and superimpose circuit 93
Is selected, and its output 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 changeover switch 83, and is supplied to the head of the running control unit 77 to be recorded on the tape. Will be recorded. The control unit 95 controls the motor drive servo circuit 76 to drive the motor of the running control unit 77 to start the tape recording running and generate a control pulse which is a reference signal for speed control of the tape running.

The data of the program data memory circuit 94 and the index signal generated from the control section 95 at any time are time-sequentially multiplexed in the data multiplexer 96, and superimposed on the control signal as a change in duty in the control recording signal processing circuit 74 to control the traveling. It is recorded on the tape by the control head of part 77. Here, the data of the program data memory circuit 94 is the cassette tape number, the number of programs, the recording date and time, the broadcast channel, the classification, the recording start address, the 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, the controller 95 generates an index signal immediately after the tape starts recording and recording, and records on the tape by the above method. Since the control unit 95 makes a multi-screen for the purpose of searching from the tape on which the program is recorded is characteristic in this embodiment,
Diagram showing the control procedure of the control unit 95 as a flowchart
20 will be used in combination and will be described in detail below.

With respect to the tape on which the program is recorded, the controller 95 drives the running controller 77 by the motor drive servo circuit 76 to rewind the tape to the head of the program or the beginning of the tape (S1). The rewinding is completed by detecting the index signal at the head of the program or the leader tape at the beginning of the tape (S2). After that, reproduction or high-speed traveling is performed (S3), and the signal from the control head of the traveling control unit 77 causes the control signal duty discrimination circuit 73
, And the index signal is detected here (S
Four).

When the index signal is detected, the controller 95
Resets the running time timer in the timer circuit 98 and then starts counting (S5). The output t of the running time timer is compared with a predetermined value a (S6), and when it exceeds the predetermined value, the control unit 95 puts the device in the reproduction mode (S7), and the signal from the head of the running control unit 77 is switched between recording and reproducing. It is inputted to the reproduction circuit 75 via the switch 83, converted into an image signal and outputted there, and passed through the switch 86, and a character pattern corresponding to the data from the program data memory circuit 94 in the superimpose circuit 93 is used 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 between the index detection section and the place where the image stored in the memory is sampled on the tape, and its purpose is to avoid commercials and create a multi-screen. Specifically, considering the case where a multi-screen is made from a tape with a broadcast program reserved, most of the commercial images are at the start of the broadcast program, so the index is automatically recorded at the beginning of recording and the index is detected during playback. Even after that, 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, the title image of the program can be set to a multi-screen by appropriately setting the value of the constant a in accordance with the broadcasting program. Therefore, the work of entering the index, which has been conventionally required, becomes unnecessary, This can greatly simplify the trouble of creating a multi-screen for the purpose of searching. When storing the image signal 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.

After that, when the index is detected again while the tape is running, the memory control circuit 80 stores the reproduced image signal in a different address of the image signal memory circuit 79 to form a multi-screen. When the image is stored at all of these addresses (S9) or 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), multi-screen Finish creating. Here, the recording section of the tape is terminated 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 the reproduction signal.

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

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

FIG. 21B shows a multi-screen display.
Each of the screen areas numbered 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 sub-screen is selected, and if a 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 superimposing circuit 93, and for convenience of retrieval by displaying character information in addition to the multi-screen. .

Example 7. The structure of the magnetic recording / reproducing apparatus of the seventh embodiment is as shown in FIG. 22, and when recording a broadcast signal on a tape, the signal from the receiving circuit 92 for television broadcasting is used by the recording signal selection switch 88 or the image signal memory circuit. Output signal from 79 passes switch 86 and superimpose circuit
The signal that has passed through 93 is selected, and the output 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 changeover switch 83, and is supplied to the head of the traveling control unit 77 and recorded on the tape. To be done. The control unit 95 controls the motor drive servo circuit 76 to drive the motor of the running control unit 77 to start the tape recording running and generate a control pulse which is a reference signal for speed control of the tape running.

The data of the program data memory circuit 94 and the index signal generated at any time from the control section 95 are time-sequentially multiplexed in the data multiplexer 96, and superimposed on the control signal as a duty change in the control recording signal processing circuit 74 to control traveling. It is recorded on the tape by the control head of part 77. Here, the data of the program data memory circuit 94 is the cassette tape number, the number of programs, the recording date and time, the broadcast channel, the classification, the recording start address, the 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 receiving circuit 92 for television broadcasting demodulates the audio signal simultaneously with the image signal of the television broadcasting. 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 mode For example, news is monaural, musical is stereo, foreign movies are bilingual, etc. are usually constant in one program, and most of them change before and after broadcasting or before and after commercial broadcasting. Is. On the other hand, when recording broadcasts for the purpose of time shift, it is often recorded including commercial broadcasts, so the image at the start of recording cannot be used for the multi-screen for search purposes. The time when the audio mode is changed from a mode other than the bilingual mode to the bilingual mode is the start time of the movie program, and a multi-screen may be created from here.

Control unit during recording or reproduction of program
Since the procedure for creating a multi-screen for retrieval by 95 is characteristic of this embodiment, the control procedure of the control unit 95 will be described in detail below with reference to FIG. Here are three steps: 2. Record index and create multi-screen during recording. 2. The index is recorded during recording and a multi-screen is created from the playback image at the index position during playback. There is a case where an index is recorded and a multi-screen is created during reproduction, of which a method for creating a multi-screen in the second procedure is publicly known, and the other description is commonly given in FIG.

The first procedure has the advantage that the quality of the image is better than that of the reproduction signal because the multi-screen is created from the recording signal, and the second procedure is the multi-screen after checking the presence and location of the index. It is convenient if you can create the
In the procedure of 1 from the program recorded multiple times
Suitable for making two multi-screens. It is assumed that the user can appropriately select these, and the memory input selector switch 87 switches between the source signal of the multi-screen and the reproducing signal in accordance with the selection.

When creating a multi-screen, first the audio mode for recording the 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 by the audio mode signal from the receiving circuit 92 at the time of recording, and at the time of reproduction, for example, by the change of the audio mode data superposed on the control signal and recorded. When the audio mode changes to a predetermined mode, the index signal is recorded and / or the image signal is reduced and stored in the memory (S24). Whether images are stored in all the memory (S25), or whether the signal recording section of the tape ends
(S26), when recording or playback is completed (S27), control unit
95 finishes recording the index and / or reducing and storing the image signal in the memory (S28).

The multi-screen created by the above procedure is convenient because it can be immediately displayed and used for searching when the power of the apparatus is turned off and on when the data of the image signal memory circuit 79 is non-volatile, Even if it is volatile, it can be reproduced and used any number of times by recording it at the beginning of the tape. To search for programs from the multi-screen display,
This can be easily performed by a known method, for example, when a screen with a number display is designated, high speed running is performed 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 of FIG. 21, which is the display screen of the magnetic recording / reproducing apparatus of the sixth embodiment, and the description of its structure and function is also the same. is there.

Example 8. The structure of the magnetic recording / reproducing apparatus of the eighth embodiment is shown in FIG. 24. When recording on a tape, the input signal is the signal from the external input terminal 91 by the recording signal selection switch 85, It is selected whether the signal is from the receiving circuit 92 or the output signal from the image signal memory circuit 79 is the signal passing through the switch 86 and the superimposing circuit 93, and the output is input to the recording circuit 82. Then, the signal is converted into a signal to be recorded on the magnetic tape, passes through the recording / reproducing switch 83, is supplied to the head of the traveling control unit 77, and is 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 the tape recording running and generate a control pulse which is a reference signal for speed control of the tape running.

The data of the program data memory circuit 94 and the index signal generated at any time from the control unit 95 are time-sequentially multiplexed in the data multiplexer 96, and superimposed on the control signal as a change in duty in the control recording signal processing circuit 74 to 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 the 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 selector 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 output to the image correlation detection circuit 97 one frame later. Image correlation detection circuit
Reference numeral 97 obtains the correlation between the signal from the memory input changeover switch 87 and the signal from the image signal memory circuit 79 for the same pixel signal on the television screen, and sends the value to the control unit 95.

Control unit during recording or playback of the program
The procedure by which 95 creates a multi-screen for the purpose of searching is characteristic of this embodiment, and the control procedure of the control unit 95 will be described in detail below with reference to FIG. Here are three steps: 2. Record index and create multi-screen during recording. 2. The index is recorded during recording and a multi-screen is created from the playback image at the index position during playback. There is a case where an index is recorded and a multi-screen is created during reproduction, of which the method for creating a multi-screen in the second procedure is known, and the other description is commonly given in FIG.

The first procedure has the advantage that the image quality is better than that of the reproduction signal because the multi-screen is created from the recording signal, and no extra time is required to create the multi-screen. In the procedure, it is possible to create a multi-screen after checking the presence and location of the index, which is convenient when the contents of the program are unknown. In the third procedure, one program can be selected from programs recorded multiple times. Suitable for making multiple screens.

It is assumed that the user can appropriately select these, and the switch 87 switches the source signal of the multi-screen to the recording signal or the reproducing signal in accordance with the selection. When creating a multi-screen, the number Nmax of 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 sub screen of the memory (S33).

The data of the Nth child screen stored in the memory of the image signal memory circuit 79 is output to the image correlation detection circuit 97 at the timing of the next image frame. The image correlation detection circuit 97 obtains the correlation between the signal from the memory input selector switch 87 and the signal from the image signal memory circuit 79 for the same pixel signal on the television screen (S34), and sends the value to the control unit 95. The control unit 95 determines whether or not the correlation value of the image input from the image correlation detection circuit 97 is less than or equal to a predetermined value b (S35). In the following case, the index is recorded on the tape and / or the subsequent image signal is stored in the memory. It is stored in the Nth child screen (S36), 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 judged whether it is the tape end (S
39) If it is not the end, then it is determined whether or not the recording or reproduction end operation has been performed (S40), and if it is not done, then the flow shifts to S33 and the multi-screen creation is continued. If the ending operation is performed in S40, the counter value is larger than Nmax in S38, or the tape end is in S39, the tape running is stopped (S41), and the multi-screen creation is finished.

The multi-screen created by the above procedure is convenient because it can be immediately displayed and used for searching when the power of the apparatus is turned off and on when the data of the image signal memory circuit 79 is non-volatile, Even if it is volatile, it can be reproduced and used any number of times by recording it at the beginning of the tape. To search for programs from the multi-screen display,
This can be easily performed by a known method, for example, when a screen with a number display is designated, high speed running is performed 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 eighth 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 description of the configuration and the function is also the same. is there.

Example 9. The configuration of the magnetic recording / reproducing apparatus of the ninth embodiment is shown in FIG. 26. When recording on a tape, the input signal is the signal from the external input terminal 91 by the recording signal selection switch 85, It is selected whether the signal is from the receiving circuit 92 or the output signal from the image signal memory circuit 79 is the signal passing through the switch 86 and the superimposing circuit 93, and the output is input to the recording circuit 82. Then, the signal is converted into a signal to be recorded on the magnetic tape, passes through the recording / reproducing switch 83, is supplied to the head of the traveling control unit 77, and is 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 the tape recording running and generate a control pulse which is a reference signal for speed control of the tape running.

The data of the program data memory circuit 94 and the index signal generated at any time from the control unit 95 are time-sequentially multiplexed by the data multiplexer 96 and superimposed on the control signal by the control recording signal processing circuit 74 as a change in duty to 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 the 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 stored therein. When performing reserved recording, the reserved recording start time, end time, and broadcast channel are input through the operation unit 71, and these are stored in the program data memory circuit 94. Of these, the time data and the time of the timer circuit 98 are compared by the control unit 95, and if they match, predetermined control is performed.

Control unit during recording or playback of program
The procedure by which 95 creates a multi-screen for the purpose of search is characteristic of the present invention, and therefore the control procedure of the control unit 95 will be described in detail below with reference to FIG. Here are two steps: 2. Record index and create multi-screen during recording. An index is recorded during recording, and a multi-screen is created from the playback image at the index position during playback. Of these, the method for creating a multi-screen in the second procedure is known, and other explanations are given in FIG. Do it in common.

The first procedure has the advantage that the image quality is better than that of the reproduction signal because the multi-screen is created from the recording signal, and no extra time is required to create the multi-screen. The procedure is suitable when the image signal memory is volatile. It is assumed that the user can appropriately select these, and the switch 87 switches whether the source signal of the multi-screen is a recording signal or a reproduction signal in accordance with the selection.

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

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

The multi-screen created by the above procedure is convenient because it can be immediately displayed and used for searching when the power of the apparatus is turned off and on when the data of the image signal memory circuit 79 is non-volatile, Even if it is volatile, it can be reproduced and used any number of times by recording it at the beginning of the tape. To search for programs from the multi-screen display,
This can be easily performed by a known method, for example, when a screen with a number display is designated, high speed running is performed 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 of FIG. 21, which is the display screen of the magnetic recording / reproducing apparatus of the sixth embodiment, and the description of its structure and function is also the same. is there.

Embodiment 10 Since the configuration of the magnetic recording / reproducing apparatus of the tenth embodiment is the same as that of the ninth embodiment shown in FIG. 26, the explanation of the components having the same functions will be omitted, and the configurations having different functions will be described below. Describe the element. Immediately after the recording of the program is started, the controller 95 generates an index signal and sends it to the data multiplexer 96, which sends it to the program data memory circuit.
After time-multiplexed with data such as a cassette number from 94, it is input to a control recording signal processing circuit 74, converted into a control recording signal and recorded on a magnetic tape. With the above method,
Only the head of the program will have a tape with an index recorded. 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 is shown as a flowchart in FIG.
Will be described in detail below.

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 the index. If detected,
It runs at high speed (S73), counts control signals (S74), and detects the end of the program (S75). When the end is detected, the operation is stopped (S76), the integrated count value M of the control signal is divided by the number Nmax of child screens of the multi-screen to obtain a quotient T (S77), and the writing child screen number counter N is set to Nmax (S78). ), And rewind the tape (S79).
, Simultaneously count the control signals (S80),
The count value is compared with the T (S81).

When the count value exceeds T, 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), the N is decremented by 1 and the control signal count value is decreased. Reset (S8
3). Whether or not the value of N is 0 is judged (S84), and when it is not 0, it is detected whether it is the start end of the tape or the head of the program (S8).
5) If not detected, move to S79 described above. When N is 0 in S84 and when it is detected in S85, the tape running is stopped (S86), and the creation of the multi-screen is completed.

The following two cases in S82: 1. Record the index and memorize the multi screen at the same time. There is a memorize multi screen. The first case is suitable, for example, when you want to confirm and search the contents of a specific one of a plurality of programs, or when it is a tape whose recorded contents are unknown and no index is recorded, and the contents of the tape are listed and searched. Can create multi-screen. 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 by the above procedure is convenient because it can be immediately displayed and used for searching when the power of the apparatus is turned on and off when the data of the image signal memory circuit 79 is non-volatile, Even if it is volatile, it can be replayed and used any number of times by recording it at the beginning of the program. In order to search for a program from the multi-screen display, a known method, for example, when a screen with a number display is designated, it can be easily performed by counting from the program start end and running at high speed up to the index in the order of the number.

The display screen of the magnetic recording / reproducing apparatus according to the tenth 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. is there.

Embodiment 11 Since the magnetic recording / reproducing apparatus of Embodiment 11 has the same structure as that of Embodiment 9 shown in FIG. 26, the description of the components having the same functions will be omitted and the structures having different functions will be described below. Describe the element. When making a reservation recording
At 71, the reserved recording start time, end time, and broadcast channel are input, and these are stored in the program data memory circuit 94. Since the procedure for the control unit 95 to create a multi-screen for the purpose of search in the 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 reserved time (S92), and then (reserved recording time / time period T) is calculated and set as 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 the child screen as shown in FIG. When L becomes 12.4, for example, Nmax of 16 is selected and the value of FIG.
The multi-screen of (c) will be created. After waiting for the recording start time (S95), start recording (S96),
The index is recorded and / or the image signal is reduced and stored in the Nth sub-screen of the memory (S97).

Here, the output of the timer that outputs t is reset, the operation of the timer is started (S98), and the small screen counter N is incremented by 1 (S99). The timer value t is compared with the time period T (S100), and if it exceeds the time period T, the process shifts to S97 to construct indexes and / or multi-screens at equal intervals. When t is less than T, the sub-screen counter value N is compared with Nmax (S101), and when N ≦ Nmax, it is determined whether or not the end time of reserved recording is reached (S102). It is determined whether the end of the recording tape is reached (S103), and if not, the process proceeds to S100. When N> Nmax in S101, when the end time of reserved recording is reached in S102, and when the end of the tape is reached in S103, reserved recording is ended (S104).

The following two cases in S97: 1. Record the index and memorize the multi screen at the same time. There is a memorize multi screen. The first case is suitable, for example, when you want to confirm and search the contents of a specific program for scheduled recording.
The second case is suitable for a case where only the list of contents is checked without performing a search for the reserved recording program, and unnecessary indexes are not recorded. These are appropriately selected and used.

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

On the display screen of the magnetic recording / reproducing apparatus of the eleventh embodiment described above, the number of child screens changes according to the length of the program for reserved recording and the recording cycle T of the multi-screen as shown in FIG. . Therefore, the number of unused multi-screens can be reduced compared to the case where the number of sub-screens is constant, so that the TV screen can be effectively used, and the size of the sub-screen can be increased when the number of storage screens is small. There is an advantage that the contents can be easily confirmed.

Embodiment 12 Since the structure of the magnetic recording / reproducing apparatus of the embodiment 12 is the same as that of the embodiment 9 shown in FIG. 26, the explanation of the components having the same functions will be omitted, and the structures having different functions will be described below. Describe the element. Immediately after the recording of the program is started, the controller 95 generates an index signal and sends it to the data multiplexer 96, which sends it to the program data memory circuit.
After time-multiplexed with data such as a cassette number from 94, it is input to a control recording signal processing circuit 74, converted into a control recording signal and recorded on a magnetic tape. With the above method,
Only the head of the program will have a tape with an index recorded. While the control unit 95 creates a multi-screen during the reproduction of the program, this procedure is characteristic of the present invention, and therefore the control procedure of the control unit 95 is shown as a flowchart in FIG.
Will be described in detail below.

First, the 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 the index. If detected, reset the control pulse counter (S114), run at high speed (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, the program time is calculated from the count value of the control signal (S119), and then (program time / time period T) is calculated and set as 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 the child screen as shown in FIG. Where L is, for example
When it becomes 12.4, 16 is selected for Nmax and the multi-screen shown in FIG. 30 (c) is created. Then, the sub-screen counter N of the multi-screen is set to the integer part of L, which is 12 in this example (S122), and the control pulse counter is reset.
(S123), the tape is rewound (S124), the tape start end or the program head is detected (S125), and if not detected, the control signal is counted and the rewind time is calculated from the value (S123).
126), it is determined whether the rewind time is longer than the time period T (S127), and T
If so, the index is recorded and / or the image signal is reduced and stored in the Nth sub-screen of the memory (S128). Subsequently, the child screen counter N is decremented by 1 (S129), the count value of the control signal is reset (S130), it is determined whether the value of the child screen counter N is 0 (S131), and if it is not 0, the process proceeds to S124. To do. If the tape start end or the program head is detected in S125, or if the small screen counter is 0 in S131, the apparatus is stopped (S132), and the multi-screen creation is completed.

The following two cases in S128: 1. Record the index and memorize the multi screen at the same time. There is a memorize multi screen. The first case is suitable, for example, when you want to confirm and search the contents of a specific program among a plurality of recorded programs, and the second case is suitable when you only check the list of contents without performing a search. Never recorded. These are appropriately selected and used.

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

On the display screen of the magnetic recording / reproducing apparatus of the twelfth embodiment described above, the number of child screens changes according to the length of the program to be reserved and recorded and the recording cycle T of the multi-screen as shown in FIG. . Therefore, the number of unused multi-screens can be reduced compared to the case where the number of sub-screens is constant, so that the TV screen can be effectively used, and the size of the sub-screen can be increased when the number of storage screens is small. There is an advantage that the contents can be easily confirmed.

Embodiment 13 The magnetic recording / reproducing apparatus of Embodiment 13 has the reserved recording function in any of the magnetic recording / reproducing apparatus of Embodiments 6 to 12 described above, and each magnetic recording / reproducing apparatus after the recording reservation is completed. Of the multi-screen creation procedure of each control unit 95 of the apparatus, the one performed at the time of reproduction is automatically executed, and its configuration is shown in FIGS. 19, 22, and 24 used in the description of each embodiment.
Alternatively, it is as shown in FIG. As an example, FIG.
A description will be given of a case where the thirteenth embodiment is applied to the sixth embodiment by using, but the description of the components having the same functions as those of the sixth embodiment will be omitted, and the components having different functions will be described below. Control unit
Since the procedure of creating a multi-screen for searching by 95 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 during reserved recording.
The data of the program data memory circuit 94 and the index signal generated from the control unit 95 are the data multiplexer 96.
In time series, the control recording signal processing circuit 74 superimposes it on the control signal as a change in the duty and the control head of the traveling control unit 77 records it on the tape.

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

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

The multi-screen created by the above procedure is convenient because when 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 if it is volatile, it can be reproduced and used any number of times by recording it at the beginning of the tape. To search for programs from the multi-screen display,
This can be easily performed by a known method, for example, when a screen with a number display is designated, high speed running is performed from the tape start end to the index in the order of the number.

As described above, according to the sixth to thirteenth embodiments, since the sub-screen of the multi-screen used for searching the program is automatically selected and stored, the index is manually entered while playing the program and checking the contents. You can omit the troublesome work. Further, in the present invention, when the procedure for creating a multi-screen at the time of recording is taken, there is an advantage that the image deterioration of the multi-screen is less than that in the case of creating a multi-screen from the reproduction signal. If the procedure for creating a multi-screen is performed during the standby time of, the waiting time for creating a multi-screen is eliminated, and as a result, a magnetic recording / reproducing apparatus with good usability can be 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, but it can be applied to any video tape recorder capable of recording / reproducing an index signal, and an image is recorded. The recording method of the signal and the index signal may be either digital or analog, and is not limited to these examples.

Embodiment 14 When carrying out Embodiment 14, the method of recording the image signal and the index on the recording medium may be either analog or digital. Therefore, the same applies to both the digital video tape recorder and the analog video tape recorder. Applicable to FIG. 33 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 receiving circuit 121 for television broadcasting and the switch 11
It is input to the recording circuit 122 via 4 and is converted into a signal to be recorded on the magnetic tape here, and is output and is recorded on the tape by the video head of the traveling mechanism unit 107 through the switch 115. 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 inputs this signal, controls by changing the duty ratio of the control signal. The index signal is superimposed on the signal and output to the traveling mechanism unit 107, and the traveling mechanism unit 10
Record on tape with the control head of 7. In the control signal processing unit 123, the integrated number of control pulses from the tape start end is output to the system control unit 102,
The system control unit 102 having received this input 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, the system control unit 10 is operated when the tape running is temporarily stopped by the operation of the operation unit 101 or when the index recording operation is performed.
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 recording the sub index is not recorded in the data memory. The number of sub-indexes recorded in the middle of each program is determined by the system control unit 102.
Is counted and stored at the time when the recording of the program is completed in the data memory 124 corresponding to the program number.

FIG. 34 (a) shows a part of the data items in the data memory 124. In the data area of the cassette on which recording has been performed, a data item area 162 for the cassette and a data item area 163 for the program are shown. The program data item 163 is managed by the memory address 164 corresponding to the program number. FIG. 34 (b) is an example of data when 7 programs are recorded in the cassette numbered as 18. The address has a 4-digit numerical value, and the sub-index number has a sub-value within each program. The numerical value of the index is stored. Since there is no data after the eighth program, it is still initialized and is not used for data such as search because the number of programs of cassette data is 7. The data memory 124 has the same area as the number of cassettes managed by the apparatus.

When a screen for searching is made from the recording position of the index signal of the cassette in which the program is recorded, the instruction signal from the operation unit 101 is input to the system control unit 102 in FIG. 33, and the tape runs at high speed from the start end. While traveling in the mode, the control signal processing unit 123 reproduces the control signal and outputs the integrated number of control pulses from the tape start end to the system control unit 102.
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 running speed of the tape when the difference between the two is less than a predetermined value. When the running speed of the tape decreases, the control signal processing unit 123 determines the duty ratio of the reproduction control signal, detects the index signal, and outputs it to the system control unit 102.

When the index at the start of the program is detected, the system control unit 102 puts the device in the reproduction state. The signal is reproduced by the video head of the traveling mechanism unit 107 and passed through the switch 115, input to the reproduction circuit 105, converted into an image signal and output, and passed through the switch 116, and the character generation display unit 1
Enter in 25. In this case, characters are not added and are output and input to the television receiver 108 from the signal output terminal 126 of the apparatus and input 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 the image signal data at the index position for one screen.

When an image is stored in the image signal memory 109,
The system controller 102 rewinds the tape to the beginning and puts the device in recording mode. The data of the image signal memory 109 is read out and outputted as an image signal, passed through the switch 116, passed through the character generation / display section 125, passed through the switch 114 and inputted into the recording circuit 122. The system control unit 102 runs the tape of the running mechanism unit 107 for a short period of time to record an image for searching the first program at the tape start end and an index.

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

FIG. 36A shows each recording area of the tape on which the program and the search image are recorded by the above procedure. The search image area 15 is provided at the beginning of the magnetic tape 151.
2 and after that, there are a first program recording area 153, a second program recording area 154, and the like. The control track of the first program has the index I1 first.
And there are three indexes J1, J2 and J3 along the way.
There is. The control tracks after the second program also have indexes.

FIG. 36B is an enlarged view of the search image area 152. After the margin 155 immediately after the leader tape 154, there are a search image 156 of program 1 and an index I1, and then a search image 157 of program 2 and an index I2. The same applies to the following programs, but after the search image 159 and the index I7 of the program 7, there is a recording area 160 for an unrecorded program.

When the program is searched, the control operation of the control unit 127 which controls the character generation display unit 125 in FIG. 33 is characteristic of this embodiment. Therefore, before explaining the control unit 127, the character generation display unit 125 related to the operation is explained.
An example of the configuration will be described, and then the control unit 127 will be described.

FIG. 37 shows an example of the structure of the character generation / display section 125. The image signal input from the input terminal 171 is input to the synchronization control circuit 172 and the analog switch 168. The sync control circuit 172 separates the horizontal sync and the vertical sync 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 when displaying characters on the screen and generates a horizontal position counter.
Enter in 173. The counter of the horizontal position counter 173 is reset by horizontal synchronization and counts with the time reference clock to display the count value on the display position detector 176 and the video R.
Input to the AM read address generator 177.

The vertical position counter 174 outputs the 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.
The video RAM read address generator 177 is a video RAM
The read address of 178 is generated and input to the access control unit 179.

FIG. 38 shows the memory layout of the video RAM 178, which 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 row 194 and column 195 of the address in FIG. 39 showing the data array of the character ROM 180. For example, the character "image" is represented as "6-1" and the first row of the video RAM 178 is designated. , Column 9 is stored. In the data of the character ROM 180, each character is composed of, for example, binary data of 16 × 16 dots, and a character 196, a blank (not displayed) 197, a selection symbol 198, a scale symbol 199, etc. are stored. 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 specifies the read dot address in each character area of the character ROM 180.

The character ROM access control unit 181 is a character ROM for the address of the character code input from the video RAM 178.
Among the character data of, the dot address data input from the display position detector 176 is changed to the dot clock generator 17
Read at the timing of the dot clock input from 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 section 181, and displays it on the output terminal 182. Output.

The display characters are set and changed by a command from an external control means. Taking the case of setting display of one character as an example, serial data from external control means
Input to serial / parallel converter 184 through 183,
Here, it is converted to parallel data and output to the latch 185,
The latch 185 collectively stores a predetermined number of data in the data bus 186.
And the specific bit data is output to the command decoder 187. The command decoder 187 decodes the data transfer destination and the instruction of the external control means and outputs it to the control bus 188.

Video R is received by the signal from the control bus 188.
The AM write address generator 189 inputs the video RAM address from the data bus 186 and inputs it to the address counter 19
0 and output to the access control unit 179, and the address counter 190 inputting this stores and holds the address, and the access control unit 179 puts the character address of the video RAM 178 into the writing state. At this time, a video RA is sent from the data bus 186.
The character code data is input to M178 and stored at a predetermined address.

FIG. 40 shows a part of the serial data when setting and changing the characters on the screen display.
Reference numeral 201 shows a series of data for displaying the "screen table of contents" on the first line, the cursor on the second line and "1" in FIG. 38, and 202 erases the symbols on the second line, first column in FIG. Then 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 locations, in reality it is displayed as an alternative and the display location is moved by 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 this and controls the device to input the key input signal from the operation unit 101 and the control signal processing unit 123. Input data and control
Output to 127.

FIG. 41 is a flow chart showing the control flow of the control unit 127 in this embodiment. When the cassette is attached to the apparatus, the cassette number is read (S201). For the cassette number, a known method such as superposition recording on a control signal is used. The control unit 127 reads the data of the area of the cassette number of the data memory based on the data of the cassette number (S202), and obtains the movable position of the cursor. Figure 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 the movable position of the cursor on the screen (S203).

In FIG. 38 showing the structure of the video RAM of the character generation / display section 125, the position where the cursor can be moved when the number of programs is 7 is expressed by the coordinates of the matrix.
1, 2-6, 2-11, 2-16, 5-1, 5-6, 5
There are 7 places of -11. This coordinate value is alternatively used for displaying the cursor according to the value of the cursor position counter described later. Here, the character display in FIG. 38 corresponds to the multi-screen display in 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 the coordinate value in the 12th row, and the column changes according to the number of sub-indexes.

The control unit 127 is a system control unit that 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, which has input this, displays the area of the tape start end portion shown in FIG. 36 (b).
The search screen of the first program recorded in 156 is reproduced. The reproduction signal is output from the reproduction circuit 105, and the switch 116,
After passing through the character generation display section 125 and the switch 117, it is reduced and stored in the image signal memory 109. The data of the image signal memory 109 is, for example, in the case of the fourth program, the screen area of FIG.
Store at the address corresponding to 141.

Since the eighth program is not recorded on this tape, the screen area 142 of FIG. 42 (a) and the area without hatching are displayed in a plane such as blue. 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, which passes through the switch 116 and the character generation display unit 125.
To input (S205).

The control unit 127 sets the value of the cursor position counter to the initial value 1 (S206), controls the character generation display unit 125, and superimposes the character display shown in FIG. 42 (b) on the input multi-screen. In FIG. 42 (b), a character 143 is an explanatory character of a multi-screen, a broken line 144 is an assumed line of an image frame of a multi-screen on which characters are superimposed, and a 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 (a) is output, passed through the output terminal 126 of the apparatus, and displayed on the TV receiver 108 (S207).

By confirming the display on the TV receiver 108, it is immediately understood that seven programs are recorded in the cassette number 18. Check the multi-screen and move the cursor to the sub-screen you want to play (S300). This cursor moving means can be used in various ways, for example, the left / right moving keys shown in FIG. 43 (a), the up / down / left / right moving keys shown in FIG. 43 (b), and the existing reception channel changing key are also used. Well change the internal flow diagram of S300 according to these choices. Further, these cursor moving means are provided in the operation unit 101, a remote operation unit (not shown), or the like. In the case of the key of FIG. 43 (a), it is determined whether or not 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 is selected. Here, it is determined whether the search key has been pressed (S305),
If it is pressed, the index position is searched (S208),
Play (S209). Search execution key is a dedicated button,
It may also be used as a play button, or may be pressed simultaneously with the left and right movement buttons. When reproduction is performed and the desired program can be confirmed, it is determined whether or not to stop the device (S210), and if it is stopped, reproduction is stopped.

In the search key input determination S305, the search key is not input and the screen change key input determination S211 is performed.
When the screen change key is pressed, the program search screen shown in FIG. 35A is displayed as one program screen that is not a multi-screen (S212). FIG. 35 (a) is a display when the screen change key is pressed after selecting the third program with the cursor in FIG. 42 (c). The image signal displayed here reproduces the search screen 158 of the third program at the beginning of the tape and displays it in the pause mode.

The character generation display section 125 is changed to the screen shown in FIG. 35 (b), the display showing the program number 3, the scale display 134 showing that the number of sub-indexes is 3, and the left and right positions of the scale are selected. Display the cursor 135.
The cursor is in the middle of the scale in the figure, but the initial value is 1.
At the (first sub-index) position (S206), the screen of FIG. 35 (c) on which the image and the character are superimposed is displayed on the TV receiver 108 (S207).

By moving the cursor 135 of the screen display of FIG. 35 (c) with the left / right movement key, the sub index in the third program is selected (S300) and searched (S208). Although there are four marks on the scale 134 in the figure, they 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, and by moving the cursor to this position, Figure 36
The corresponding index position in the area 155 shown in (a) is searched. When the sub index is searched, a high speed search is performed by address up to the index position at the beginning of the program, and after detecting this, the 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 it. Since the control means for displaying and moving the selection symbol on this screen to select and search and play the program and sub-index in it, the part you want to see of the program you want to see with just a few simple button operations The basic operation of the image recording / reproducing apparatus for viewing is greatly facilitated.

[0204]

As described above, in the first recording / reproducing apparatus of the present invention, in the VTR capable of recording a signal for a long time,
Since the video and audio signals representing each program recorded on the tape and the confirmation of the contents by the additional data and the search information can be obtained from the start portion of the tape, the same great benefit as the contents of the book can be obtained.

In the second recording / reproducing apparatus of the present invention, the program contents are displayed in a list by using the multi-screen, and the program is searched by selecting it, so that the operability is good, and the search is performed by the index signal. The circuit scale is small and the cost can be reduced.

According to the third recording / reproducing apparatus of the present invention, since the second recording / reproducing apparatus can know which program position is currently on the tape once the multi-screen is generated, which program on the tape is currently selected. You can search from the position of, and you can search any number of times, so the operability is improved.

In the fourth recording / reproducing apparatus of the present invention, the program contents are displayed in a list by using the multi-screen, and the program is searched by selecting the list, so that the operability is good and the linear time counter for counting the CTL signal is provided. Since the search is performed by using, the search can be performed with extremely high accuracy, and since the search is performed using the value of the linear time counter that counts the CTL signal, the circuit scale of the search circuit is small and the cost can be reduced.

In the fifth recording / reproducing apparatus of the present invention, the program contents are displayed as a list by using the multi-screen, and the program is searched by selecting it. Therefore, the operability is good. Since the search is performed up to the neighborhood and then the index signal is used to start the search, the effect is less affected by the deviation of the linear time counter due to the skip of the index signal or the skip of the CTL signal during high-speed search. Can be done. Further, since the counter value at the beginning of each program need only be searched up to the neighborhood, the memory of the means for storing the counter value can be saved. Further, since the search is performed using the value of the linear time counter that counts the index signal and the CTL signal, the circuit scale of the search circuit is small and the cost can be reduced.

In the sixth to thirteenth recording / reproducing apparatus of the present invention, since the sub-screens of the multi-screen used for searching the program are automatically selected and stored, the program is reproduced and the index is manually input while confirming the contents. You can omit the troublesome work. Further, in the present invention, when the procedure for creating a multi-screen at the time of recording is taken, there is an advantage that the image deterioration of the multi-screen is less than that in the case of creating a multi-screen from the reproduction signal. When the procedure for creating a multi-screen is performed during the standby time, the waiting time for creating a multi-screen is eliminated, and as a result, a recording / reproducing device with good usability can be obtained.

In the fourteenth and fifteenth recording / reproducing apparatuses of the present invention, 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 is displayed on this screen. Is displayed and a control means for selecting and searching and playing a program or sub-index within it by moving the selection symbol on this screen is provided, so you can view the program you want to see with just a few simple button operations. The basic operation of the recording / reproducing apparatus for looking at the desired portion becomes much easier.

[Brief description of 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 a recording / reproducing apparatus of the present invention.

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

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

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

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

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

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

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 of the present invention.

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

FIG. 18 is a diagram showing another example of stored contents of a linear time counter storage unit.

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

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

FIG. 21 is a diagram showing a screen.

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

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

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

FIG. 27 is yet another control flowchart when creating a multi-screen.

FIG. 28 is yet another control flowchart when creating a multi-screen.

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

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

FIG. 31 is still another control flowchart when creating a multi-screen.

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

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

FIG. 34 is a diagram showing stored 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 showing a configuration of a character generation / display unit in FIG. 33.

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

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

FIG. 40 is a diagram showing an example of serial data of the control unit in FIG. 33.

41 is a flowchart showing the control flow of the 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 section 52 Control section 53 CTL signal processing circuit 56 Index determination circuit 58 Playback circuit 59 Memory 62 Recording circuit 65 Linear time counter display section 66 Linear time counter storage section 93 Superimpose circuit 94 Program data memory circuit 95 Control section 97 Image correlation detection circuit 109 Image signal memory 124 Data memory 125 Character generation display section 127 Control section

 ─────────────────────────────────────────────────── ─── Continuation of the front page (31) Priority claim number Japanese Patent Application No. 4-289664 (32) Priority date Hei 4 (1992) October 1 (33) Priority claim country Japan (JP) (72) Inventor Keiji Hatanaka, No. 1 Baba Institute, Nagaokakyo-shi, Kyoto, Japan Electronic Product Development Laboratory, Mitsubishi Electric Corporation (72) Inventor, Keiyu Hirano, No. 1, Baba Institute, Nagaokakyo City, Kyoto Prefecture (72) Invention, Electronic Product Development Laboratory Person Ippei Kihei No. 1 Baba Institute, Nagaokakyo City, Kyoto Prefecture Mitsubishi Electric Co., Ltd. Electronic Product Development Laboratory (72) Inventor Ken Onishi No. 1, Nagaokakyo City Baba Institute, Kyoto Prefecture Mitsubishi Electric Corporation Electronic Product Development Laboratory (72) Invention Person Kenji Castle 1 Baba-Zou, Nagaokakyo-shi, Kyoto Inside Mitsubishi Electric Corporation Electronic Product Development Laboratory

Claims (19)

[Claims] 1. Means for recording video data and audio data in a first format as a digital signal on a recording medium, and switching to a second format in which the ratio of audio data to video data is different from the first format. A recording / reproducing apparatus comprising: a unit for recording a digital signal on a recording medium. 2. The second format is configured so that video data corresponding to one field or one frame of a video signal and audio data corresponding to an audio signal of a fixed time are recorded as one program. The recording / reproducing apparatus according to claim 1, which is characterized in that. 3. The data to be recorded in the second format is configured to add graphic or character data related to the program recorded in the first format. The recording / reproducing apparatus described. 4. The video data or audio data of the program recorded in the first format is used as the video data or audio data recorded in the second format. Item 1. The recording / reproducing apparatus according to item 1. 5. A recording / reproducing apparatus for recording a plurality of programs on one magnetic tape, comprising recording means for recording an index signal in which the duty ratio of the control signal at the beginning of each program is changed, and a certain reference point on the tape. Means for determining the order in which each program is recorded, means for reducing the beginning one screen of each program on a multi-screen in which one screen is subdivided, and displaying a list, and a program displayed on the multi-screen And a means for determining the position of the reference point and a means for counting the index signal, and counting the number of index signals from the reference point for the program selected on the multi-screen. A recording / reproducing apparatus characterized in that it is automatically searched according to the circumstances. 6. The device according to claim 5, further comprising means for determining the forward and reverse running directions of the tape, and being configured to determine which position from the reference point is currently in the program. Recording / playback device. 7. A recording / reproducing apparatus for recording a plurality of programs on one magnetic tape, a display means for counting control signals at the beginning of each program and displaying recording / reproducing time, and an index signal at the beginning of each program. Recording means for recording, means for storing the linear time counter value at the beginning of each program counted from a certain reference point on the tape, and one screen at the beginning of each program
A means for reducing and displaying a list on a multi-screen in which the screen is subdivided, a means for selecting one of the programs displayed on the multi-screen, and means for determining the position of the reference point, The program selected on the multi-screen is automatically searched by the value of the linear time counter from the reference point and the value of the linear time counter at the beginning of the stored program. Recording / playback device. 8. In a recording / reproducing apparatus for recording a plurality of programs on one magnetic tape, a display means for counting control signals at the beginning of each program and displaying recording / reproducing time, and an index signal at the beginning of each program. Recording means for recording, means for storing the linear time counter value at the beginning of each program counted from a certain reference point on the tape, and one screen at the beginning of each program
A means for reducing and displaying a list on a multi-screen in which the screen is subdivided, a means for selecting one of the programs displayed on the multi-screen, and means for determining the position of the reference point, The program selected on the multi-screen is searched up to near the beginning of the selected program by the linear time counter value from the reference point and the linear time counter value at the beginning of the stored program, and then the selected program is selected. A recording / reproducing apparatus characterized by being configured to automatically perform a search by detecting an index signal of the program. 9. A recording / reproducing apparatus having a clock function, an index signal recording / reproducing function, and a memory for storing one field or one frame of image information and thinning out the image information and writing it in a part of the memory. And a memory control means for synthesizing a plurality of image information as a multi-screen, and after the index signal is detected at the time of reproduction or high-speed traveling, the traveling is continued for a predetermined time, and then the image information is reproduced and stored in the memory. A recording / reproducing apparatus comprising: a control unit. 10. A recording / reproducing apparatus having a clock function, a reserved recording function, an index signal recording / reproducing function, a memory for storing one field or one frame of image information, and one of the memories for thinning out the image information. Memory control means for synthesizing a plurality of pieces of image information as a multi-screen by writing in a section, and automatically recording an index signal and / or storing the image signal in the memory when the broadcast audio mode changes to a predetermined audio mode. A recording / reproducing apparatus comprising: a control unit for storing. 11. The recording / reproducing apparatus according to claim 10, wherein the predetermined audio mode is one of a stereo mode, a monaural mode, and a bilingual mode. 12. A recording / reproducing apparatus having an index signal recording / reproducing function, comprising: a memory for storing image information of 1 field or 1 frame; and a plurality of memory units by thinning out image information and writing it in a part of the memory. Memory control means for synthesizing image information as a multi-screen, correlation detection means for obtaining a correlation of images from the data of the memory and data of image signals to be recorded or reproduced, and when the correlation of the images is below a predetermined value. A recording / reproducing apparatus comprising: a control unit that records an index signal and / or stores an image signal in the memory. 13. A recording / reproducing apparatus having a clock function, a reserved recording function, an index signal recording / reproducing function, a memory for storing image information of one field or one frame, and one of the memories for thinning out the image information. Memory control means for synthesizing a plurality of pieces of image information as a multi-screen by writing the same in a unit, and recording of an index signal and / or an image signal at every time when the time for reserved recording is equally divided by the number of the multi-screens or less. And a control means for storing the data in the memory. 14. A recording / reproducing apparatus having a clock function, an index signal recording / reproducing function, and a memory for storing one field or one frame of image information and thinning out the image information and writing it in a part of the memory. And memory control means for synthesizing a plurality of image information as a multi-screen, and recording of the index signal and / or the memory of the image signal at every time when the recording time of the recorded program is equally divided by the number of the multi-screens or less. A recording / reproducing apparatus, comprising: 15. A recording / reproducing apparatus having a clock function, a reserved recording function, an index signal recording / reproducing function, a memory for storing image information of one field or one frame, and a memory for thinning out the image information. Memory control means for synthesizing a plurality of image information as a multi-screen by writing to the unit, and setting the number of the multi-screen above the quotient obtained by dividing the numerical value of the time for reserved recording by a predetermined time value,
A recording / reproducing apparatus comprising: a control unit that records an index signal and / or stores an image signal in the memory at each predetermined time. 16. A recording / reproducing apparatus having a clock function, an index signal recording / reproducing function, and a memory for storing one field or one frame of image information and thinning out the image information and writing it in a part of the memory. With a memory control means for synthesizing a plurality of image information as a multi-screen, and the number of the multi-screens is set to be equal to or more than a quotient obtained by dividing the numerical value of the recording time of the recorded program by a predetermined time value, and at every predetermined time And a control unit for recording the index signal and / or storing the image signal in the memory. 17. A recording system having a reservation recording function, and is configured to turn off the power after operating the memory control unit and the control unit after the end of the reservation recording. , 12, 13, 14, 15 or 16 recording / reproducing apparatus. 18. Means for recording and reproducing image signals,
Means for recording and reproducing the index signal, means for generating and superimposing and displaying a character to be superimposed on the image signal, and recording the image signal based on position data on the screen of the character superimposed on the image signal A recording / reproducing apparatus comprising: a control unit that performs a predetermined operation on a portion. 19. Means for recording and reproducing image signals,
A means for recording and reproducing the index signal, a means for generating and superimposing a character to be superimposed on the image signal, a means for creating a multi-screen, and a position on the screen of the character superposed on the multi-screen image signal. A recording / reproducing apparatus comprising: a control unit that performs a predetermined operation on a recording portion of an image signal corresponding to a corresponding sub-screen in a multi-screen based on data.