JP3477719B2 - Video tape recorder - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video tape recorder.
(Hereinafter referred to as VTR), especially
Dramatically improved operability and recorded on magnetic tape
Is useful for managing and searching for information
Automatically controls VTR in conjunction with information recorded on magnetic tape
Control of the VTR main unit for each magnetic tape.
This is effective when changing the definition of a key. 2. Description of the Related Art Conventionally, a first method for retrieving recorded information.
At the beginning of the information to be retrieved from the magnetic tape,
Combo control signal is duty-modulated and cueing is performed.
There is a method of recording a signal. So-called 1/2 in for home
VHS standard VISS search function, which is the mainstream of VTRs
Fast forward / rewind (FF / RE)
W), the cue signal (VISS signal).
Signal) and shift to the stop state or playback state
Things. Second, servo control
Uses linear time counter function to display signal count value
FF / REW state
At the beginning of information to be retrieved from magnetic tape
When the count value reaches
It is something to make. [0003] As means for reproducing recorded information,
Is used as a VTR operation key or remote controller
Manually specify the playback mode such as normal playback or variable speed playback
There is no other way to enjoy. [0004] However, the above-mentioned steps
Problem when searching information recorded on magnetic tape by the
First, in each case, the current absolute
Before searching, be sure to use a magnetic tape
The beginning of the winding must be rewound and you want to find the information you want quickly
There is a problem that can not be obtained. Second, on magnetic tape
Indexes such as titles do not forget what was recorded.
Information and the count value for the counter search function
Or write it on a label etc.
It must be pasted on the cassette in which it is stored. Further
In some cases, information recorded for the above reasons may be forgotten or accidentally deleted.
Record only one information on one tape to avoid
In many cases, the tape use efficiency has been reduced. [0005] Also, information recorded on a magnetic tape is reproduced.
In the case of conventional VTRs, video and audio
To automatically control VTR operation modes such as playback mode
Difficult to watch in normal playback mode from start to finish
There is no problem for movies and dramas, but video and audio
For games and simple learning that can be operated interactively in conjunction and enjoyed
There were problems in realizing tape. The present invention solves the above-mentioned conventional problems.
In managing and searching for information recorded on tapes,
Dramatically improve the shortcomings of random accessibility and video
New applications like games and learning videos
Providing a video tape recorder that can be enjoyed
aimed to. [0007] The above-mentioned problems are solved.
Therefore, the VTR according to the present invention has a cassette for storing a recording medium.
The storage element attached to the
Switching the read destination of multiple memories that store RAM
Microcomputer and microcomputer
Stored in the first memory that is started when the power of the
When the cassette is loaded by program,
The means by which the contents are written to the second memory,
Written data or detection set in cassette
Read program by control terminal based on presence or absence of holes
Means for switching the destination, and
Means for switching to a program stored in the first memory;
Is provided. Further, the program stored in the first memory
The system allows you to enter or
Is stored in a cassette and information acquisition means to collect
Position detecting means for detecting an absolute position of the recording medium;
A cue detection means for recording and reproducing a cue signal on the body;
During recording, index information and recording position information are
First writing means for writing to a memory, and second memory
Second writing means for writing the content of
Read the index information and recording position information from memory 2
Readout means for reading out and read out by the readout means
Converts index information and recording position information into video signals for monitoring.
Signal processing means for outputting to the
For selecting information to be reproduced from index information
And a recording position corresponding to the information selected by the selecting means.
Selected by the information, position detection means and cue detection means
Search means for performing automatic cue reproduction of information
I have. Furthermore, a second memory stored in the storage element
The program transferred to the computer is linked to the information recorded on the recording medium
System control means for automatically controlling the VTR
ing. According to the present invention, a magnetic tape having the above-described structure is provided.
VT for management and retrieval of information recorded in
Fixed the disadvantage of random access, which was the biggest issue of R
Index information on the information to be recorded to improve
And recording position information to the storage element attached to the cassette
And memorize them and convert them into video signals as needed.
The screen is displayed and the selected
Can be. [0011] Further, a VTR is newly added by the same configuration.
In order to realize the application, the application
Software software for the
Automatic control of VTR in conjunction with video and audio recorded on
Or you can. [0012] The above-mentioned switching is carried out on the memory element.
The data of the fixed address or the presence or absence of the detection hole of the cassette
Therefore, it can be realized. An embodiment of the present invention will be described below with reference to the drawings.
I will explain while. FIG. 1 shows one embodiment of the video tape recorder of the present invention.
FIG. 2 is a block diagram showing the configuration of the embodiment, and shows a magnetic tape 2;
Record information on the cassette 1 for storing the
Rotating drum 3 for driving a rotating head (not shown)
And supply to feed out the magnetic tape 2 at the time of reproduction or fast forward
Side reel (hereinafter, referred to as S reel) 4 and during playback or fast forward
At the time of rewinding, the take-up reel for winding the magnetic tape 2 (hereinafter, referred to as a reel)
5) and the rotation speed of the S reel 4 is detected.
Supply-side reel rotation speed detector (hereinafter, S reel rotation speed)
6) and the rotational speed of the T reel 5 are detected.
Take-up reel rotation speed detector (hereinafter, T reel rotation speed)
7) and the servo control signal
Control head 8 for recording and playback and cassette 1
Information about the information to be recorded at the time of recording.
Stores dex information and remaining tape information or later
Microcomputer software program to be described
Semiconductor memory (hereinafter referred to as cassette memo
9) and the input / output terminals of the cassette memory 9
Through the contacting connector 10 and the control head 8
To write and read the cue signal to the magnetic tape
Troll signal recording / reproducing circuit 12, timer reservation and VTR
A key input device for operation or the like or a remote control device 14,
V according to the input from the key input device or the remote control device
System controller 1 that determines operation mode of TR
9 and VT according to the command of the system controller 19.
To transfer the magnetic tape 2 according to the operation mode of R
A capstan motor (not shown) or reel motor
Tape drive circuit 13 for driving a taper (not shown)
And a cassette memo when cassette 1 is inserted into the VTR
All the information stored in the memory 9 is imported and the battery (Fig.
Static run backed up by (not shown)
A dumb access memory (hereinafter referred to as SRAM) 15;
The index information stored in the SRAM 15 when necessary.
On-screen display circuit for displaying information etc.
(Hereinafter referred to as OSD circuit) 16 and video signal processing circuit
17 and a monitor 18 and a microphone for controlling the above system
And the computer 11 as a whole. The VTR constructed as described above will be described below.
The operation will be described in detail below. First, cassette memory 9
The information stored in the
If it is dex information or recording position information, that is, the tape
Index information about the information recorded in the
Information, that is, information about the information recorded on the tape.
Index information is displayed on the monitor screen as necessary.
The recording information specified by the user according to the recording position information.
Tape index system for automatic cue playback
(Hereinafter simply referred to as the index system)
I will tell. Here, the index information is the recording date
Date, recording start / end time, tuner channel number,
The contents of the information to be stored, such as the title, can be recognized later.
Things. Recording position information is the information to be recorded.
To remember where it was recorded in the
For example, the rotation cycle of the S reel 4 and the rotation cycle of the T reel 5
The end of the tape from the recording start position
The remaining tape time until the beginning of the tape
These time count values and the like. FIG. 2 shows the state stored in the cassette memory 9.
Content that is compatible with the index system
Is a map diagram when the horizontal axis (column) is the lower address.
(4 bits), the vertical axis (row) is the upper address and its space
In this embodiment, the upper addresses are 0 to 9
Up to the address, but the final value of the upper address is the memory capacity
It changes according to. 16 in the top row of upper address 0
Byte data is initialization data for format check.
Use the new cassette memory.
Or if it is in use, its contents are indexed.
System-compatible data or software
Program can be determined. In the case of FIG.
Is the case of the indexing system, the second line is the path
The word, user name and current tape position are in the third line
Contains the cassette title and the capacity of this cassette memory
Is done. The first column of each row is the main ID, the second column is the sub ID
And the main ID identifies what data the row is
Sub ID is the code format of the data
Is to identify something. Lines 4 to 8
Up to the index data area (part b in FIG. 2).
If the main ID in the first column is "02", the row is
Month, day, recording start time, recording end time, channel
, Genre, recording start position, recording end position are in the first column
If the main ID is “03”, that line is the previous line number.
The set title is stored, and the sub-ID in the second column is
If the title code format is ASCII code or shift
JIS code. Ninth
Line, line 10 is the maker application area (FIG. 2)
c), the maker code of the main ID in the first column
Manufacturer-specific application data shown in
VTRs that do not match the manufacturer code
You have to change the data. Then, the cassette 1 is inserted into the VTR.
And the microcomputer 11 stores all the data in the cassette memory 9.
The data is read through the connector 10 and the SRAM 15
Write to. And the format check data mentioned above
Cassette memory 15 for index system
Make sure that If the cassette memory 9 is new
If so, initialize the format check data again
You. Thereafter, the cassette 1 is ejected from the VTR.
Until the above, only the data on the SRAM 15 is edited. Toes
Every time one program starts recording,
Index information and recording position information added to SRAM15
At the same time, a cue signal is recorded on the magnetic tape 2.
At the end of recording, the presence or absence of overwriting based on the recording position information
Check, and if there is a duplicate record, the original index
And erases the recording information and the recording position information from the SRAM 15.
You. When the cassette 1 is ejected, S
Write data in RAM 15 to cassette memory 9
And This is the microcomputer 11 and the cassette
The memory 9 is not a parallel connection but a serial connection.
Connected via a connector 10
Data read / write directly to the memory 9 will result in data reliability
It is necessary to read twice, check the comparison, etc. to secure
Yes, and sorting when sorting data
This is because the processing becomes complicated. Next, a method for detecting the recording position information described above will be described.
Will be described. FIG. 3 is an enlarged view of a portion of the cassette 1 in FIG.
FIG.
The method for detecting the remaining tape time will be described in detail. FIG.
, Vt is the running speed [m / s] of the magnetic tape 2,
r is the hub diameter [m] of the S reel and T reel, Rs and R
t is the magnetic flux wound on the S reel and the T reel, respectively.
The radius [m] to the outer circumference of the air tape, Ss and St are respectively
Magnetic tape wound around S-reel and T-reel
Area [m ^Two ], Ωs and ωt are S
Reel and T reel rotation angular velocity [rad / s]
You. Incidentally, the angular velocities ωs and ωt are determined by the number of rotations of the S reel.
Detected by the rotation speed detector 6 and T reel rotation speed detector 7
Obtained by measuring the period of the rotation speed detection signal
be able to. Therefore, it is wound around the S reel and the T reel.
The radiuses Rs and Rt to the outer circumference of the magnetic tape are given by the following equations.
It is required. [Equation 1] ## EQU2 ## Therefore, the magnetic material wound around the cassette
The entire tape, including the reel hub, equivalent to the length of the tape
The area S is given by the following equation. [Equation 3] The magnetic material wound around the cassette 1
There are several types of tape lengths.
According to HS standard, 120 minutes tape, 90 minutes tape, 60 minutes tape
And 30-minute tape. Therefore, each table
The total area S of the tape in advance ₁₂₀ , S ₉₀ , S ₆₀ , S
₃₀ The cassette 1 currently inserted in the VTR
Can detect how many minutes the tape is. Based on the result
Again, the tape area S including the reel hub on the S reel side
So, for example, if the detection result is a 120-minute tape
If so, Sso is expressed by the following equation. [Mathematical formula-see original document] Then, the net tape excluding the area of the reel hub is
Tape area by dividing the tape area by the tape thickness τ [m].
The amount L [m] is calculated by dividing this by the tape speed.
Time T [s] can be calculated. That is, (Equation 6) To calculate remaining tape information.
It is done. Further, the microcomputer 11
Is the control signal recording of FIG.
Duty modulation of control signal by reproduction circuit 12
The head search signal, so-called VISS signal, is transferred to the magnetic tape 2
To record. FIG. 4 shows duty modulation of the control signal.
Describes the VISS search function to search for a head
Control signal recording and playback waveforms and head
Indicates the recording format of the output signal.
High level when one cycle of troll signal is 100%
A signal whose period (hereinafter referred to as H level) is approximately 60% (FIG. 4
(A)) is a “0” pulse, and the H level period is approximately 27.
The 5% signal (FIG. 4 (B)) is defined as a “1” pulse,
At the beginning of recording, that is, at the beginning of the program to be recorded
A cueing code as shown in (C) is recorded. So
Fast forward or rewind during VISS search
Measuring the duty of the playback control signal at times
To detect this cue code and switch to playback mode.
It is something to make. By the way, recording of VTR is roughly divided into
There are records and timer records, especially in the case of timer records
Type up and not actually when the timer is reserved
Microcomputer for timer when recording starts
(Not shown)
Received by the microcomputer 11 and written into the SRAM 15
Shall be considered. In other words, although the timer was reserved,
This is to prevent malfunction if the data is not recorded for a reason.
is there. When reproducing the tape recorded as described above,
The case will be described below. First insert the cassette into the VTR
Then, as in the case of recording, the microcomputer 1
Reference numeral 1 denotes the entire contents of the cassette memory 9 via the connector 10.
And transfers it to the SRAM 15. And the above-mentioned
The cassette memory 15 is stored according to the format check data.
After confirming that it is for the indexing system,
The dex information is read from the SRAM 15 and the OSD circuit
Monitor screen by video signal processing circuit 17 via
Display above. FIG. 5 shows an example of the display. In this case,
The cassette inserted into the VTR has the cassette title
In "TV recording", the user name is "Daddy"
There are currently 5 programs on this tape
For example, the program of program number 1 is 10
At the 6th Western Movie Theater recorded at 9 pm on March 20
Yes, program number 2 is 7 pm on October 25
It shows that it was a drama of 10 channels recorded at the time
ing. Then, the operation key 14 is used to
After selecting the gram number, put the VTR in playback mode
And software installed in the microcomputer 11
Search for the program selected by the
After performing this, it automatically enters the playback state. Diagram of above operation
6. The software incorporated in the microcomputer 11 shown in FIG.
The flowchart of the software program and V shown in FIG.
Details using a schematic diagram of a magnetic tape showing the running state of the TR
Will be described. First, in processing block 201 of FIG.
And detects the remaining tape in the same way as described at the time of registration.
To detect the current tape position (point d in FIG. 7).
Next, when recording the program selected in the branch 202
When the remaining amount of tape stored in the SRAM 15 is detected
Time and current tape remaining time detected in processing block 201
And compare the result with the current position.
10 minutes or more before the point (point f in FIG. 7) (point e in FIG. 7)
(Left side), the processing shifts to the processing block 203 and the VTR
Is in the fast forward (FF) state and the current position is
If it is more than 10 minutes behind (right side from point g in FIG. 7)
Go to block 204 to rewind (REW) VTR
And returns to the processing block 201. In addition
If the current position is within 10 minutes of the target position,
To 205 and set the VTR to the VISS search
Status when the start code of the selected program is detected.
In the processing block 206, the VTR
Is completed. In other words, the recorded position of the program
Approximately detected by tape remaining amount detection function, then VISS
The detection is performed with high accuracy by a search function. In this embodiment, the tape position detecting means is used.
The step is realized by the tape remaining amount detection function and the VISS search function.
But controls timecode etc.
The time during playback is recorded and superimposed on the signal or video signal.
By detecting the code or the control signal
By counting the number from the beginning of the tape winding, the tape position can be determined.
It may be detected. Next, the contents stored in the cassette memory 9 are
If it is a software program, that is, the configuration of FIG.
The new index system differs from the index system described above.
Application that is linked to video and audio
Automatic control of VTR operation modes such as raw mode,
Games and simple games that can be operated interactively in conjunction with
Cassette system that realizes easy learning videos
(Hereinafter simply referred to as program system)
I do. FIG. 8 shows the state stored in the cassette memory 9.
Content is data corresponding to the program system
FIG. 12 is a map diagram in the case where the horizontal axis (column) is the lower address (4
), And the vertical axis (row) represents the space with the above address.
In this embodiment, the upper addresses are addresses 0 to 9.
The final value of the upper address depends on the memory capacity.
Will change. 16 bytes in the top row of upper address 0
Is the initialization data for format check.
This allows the contents of the cassette memory 9 to be
A program can be determined. FIG. 9 shows the microcomputer 11 of FIG.
Internal read-only memory (hereinafter referred to as internal ROM)
) Of software programs installed in 20
This is the main flowchart, in which the branch 207
Check if cassette 1 is inserted into VTR
If the cassette 1 is slotted in, the processing block 2
08 and all contents of the cassette memory 9 are stored in the SRAM
Transfer to 15. After the transfer, the branch 209 in FIG.
A 16-byte format in the top row of the memory map
The cassette memory 9 is input by the
Determining whether it is for a dex system or a program system
If it is for an index system, the processing block 21
0 and the index system described with reference to FIGS.
The system's software program is started. On the other hand,
If the set memory 9 is for a program system,
Shift to the lock 211 and the system controller 19 of FIG.
Request to reset external ROM mode, wait state
become. That is, the microcomputer 11 has the internal RO
M internal ROM mode and an external ROM
The external ROM mode, and the SRAM 15
Is configured to correspond to the
In response to the above request, the la
Switch ROM mode control terminal from inside to outside for 1
Change and reset start. Then the micro compilation
The computer 11 stores the programs stored in the SRAM 15
According to the program stored in the cassette memory 9,
Is started. The microcomputer 11 and the system
It is connected to the stem controller 19 by a communication bus,
With this communication bus, the microcomputer 11
Can be controlled freely. This allows for each cassette
Can install different programs on VTR
To realize applications linked to video and audio.
Can be FIG. 10 shows a cassette for a program system.
Of the application program written in the memory 9
4 is a flowchart of an embodiment, in which the VTR is a magnetic tape;
When the player is played back to a specific position, it is automatically in still playback mode.
And the next playback position is found by dialogue with the user.
Is what you do. FIG. 11 illustrates the flowchart of FIG.
Magnetic tape to indicate VTR playback status for clarity
FIG. First, in processing block 90 of FIG.
Set the VTR to the rewind (REW) mode.
Check if magnetic tape 2 has been rewound to the beginning
When the winding is completed, the VTR
Reset the tape counter (not shown)
The mode is shifted to the VTR normal playback (PLAY) mode in step 93.
And the count value of the tape counter becomes “i” in the branch 94.
Check that the tape counter value is "i"
, The VTR is paused (process
Chill playback) and waiting for key input at branch 96
become. This will be described with reference to FIG.
Replay from tape counter value 0 (zero) and count tape
When the data value becomes “i”, the playback pause state is automatically set.
The reproduced video at that time is, for example, as shown in FIG.
Requesting a keystroke response from the user.
You. Here, the user presses the “Channel DOWN” key.
If so, the processing moves to the processing block 99 where the pause state is released and the communication
Shift to regular regeneration. Also, if the user says "Channel U
If the "P" key is pressed, the processing shifts to the processing block 97 where the pause
State and shift to the fast forward (CUE) mode. Soshi
In the branch 98, the count value of the tape counter is
When it becomes "j", the VTR is normally set in the processing block 99.
Move to playback. This will be described with reference to FIG.
Responded according to the instruction on the playback screen with the counter value "i"
The next playback start position is controlled according to the user's operation.
Will be. For example, if this system is applied for learning
If the tape counter value reaches "i"
The answer explanation is recorded when the item is from "i" to "j".
Key input by the user with the tape counter value "i"
If the answer is correct, a tape cow with the following questions
To the point of the counter value "j".
It will be played automatically. FIGS. 10 and 11 show a very basic embodiment.
There is a microcomputer for VTR control.
11 and the system controller 19 through a communication bus.
The cassette memory 9 can be controlled basically.
The system control is performed by a program built in
The same processing as in step 19 can be performed. Further, the maker code and the
Setting the type designation of the microcomputer 11
The program stored in the cassette memory 9 operates.
Can be specified. As described above, the video tape recorder of the present invention
Use a cassette with a cassette memory installed.
Management of the information recorded on the tape and
Lander was the biggest issue of conventional VTR in search
Not only dramatically improve the accessibility of
Video and audio recorded like soft tape in one configuration
The program linked to the
Different VTR controls can be realized for each cassette
Video games that were difficult to achieve with conventional VTRs
Enjoy new applications like learning videos and learning videos
be able to.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing the configuration of an embodiment of a video tape recorder according to the present invention. FIG. 2 is a diagram showing contents stored in a cassette memory of the embodiment corresponding to an index system. FIG. 3 is an enlarged view of a cassette part of the embodiment. FIG. 4 is a recording waveform, a reproduction waveform, and a cue signal of a control signal for explaining a VISS search function of the embodiment. FIG. 5 is an example of a monitor screen display of the embodiment. FIG. 6 is a flowchart of a software program incorporated in the microcomputer of the embodiment. FIG. 7 is a magnetic tape representing a running state of the VTR of the embodiment. FIG. 8 is a map diagram when contents stored in the cassette memory of the embodiment are data corresponding to a program system. 9 Internal ROM of the microcomputer of the embodiment
FIG. 10 is a flowchart of an embodiment of an application program written in a cassette memory for a program system of the embodiment. FIG. 11 is a view showing a reproduction state of a VTR of the embodiment. Schematic diagram of magnetic tape for use [Description of symbols] 1 cassette 2 magnetic tape 3 rotating drum 4 supply reel 5 take-up reel 6 supply-side reel rotation speed detector 7 take-up reel rotation speed detector 8 control head 9 Cassette memory 10 Connector 11 Microcomputer 12 Control signal recording / reproducing device 13 Tape drive circuit 14 Key input device 15 SRAM 16 On-screen display circuit 17 Video signal processing circuit 18 Monitor 19 System controller 20 Internal ROM 21 Internal RAM

Claims (1)

(57) [Claims] [Claim 1] It is attached to a cassette for storing a recording medium, and data related to recording information or a video tape
One of the second programs for controlling the operation of the coder
A memory element but stored, have a first and a second memory, storing in said first memory
From the first program or the storage element
By the second program written in the second memory
A microcomputer for controlling the operation of the video tape recorder , wherein the microcomputer is stored in the first memory.
To the storage element based on the execution of the first program
Writing the stored information into the second memory,
Information written in the memory 2 or the cassette
Based on the presence or absence of the provided detection hole, the information is written in the storage element.
The stored information is the data or the second program.
And read the program based on the result.
The destination is either the first memory or the second memory
A video tape recorder characterized by switching to .