JPS6035388A - Program access system of magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To obtain a system which performs the alteration of a program such as optional addition and deletion by recording time address codes which increase with the recording elapse of an information signal on a tape, and storing a time address corresponding to the tape position in the RAM in a device and recording this program number corresponding to the address of the RAM. CONSTITUTION:When the 1st information program is denoted a P1, a user determined the starting position A of P as the start of P1, and then the current time address ''0:00'' is stored as data in the 1st start-time address of the RAM through a changeover switch (SW2). A microcomputer has the RAM6 for storing the address of said time address and controls the reading and writing of data and the array alteration. The output of a time address generator 1 is inputted from the side REC of SW2 to specify the 1st address for the specifying signal S5 of the RAM address, and a write command is supplied to store ''0:00'' in the 1st start time address shown in figure of the RAM, i.e. at a position AD1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of the Invention] The present invention relates to a blockogram access method for retrieving the location of information recorded on a magnetic tape, and in particular to a blockogram access method for searching the recording position of each blockogram on the tape. Write to RAM,
The present invention relates to a program access method for a recording/reproducing apparatus in which a recording position on a tape corresponding to the program number stored in the atlus can be read from the RAM by specifying the program number as a RAM address.

[Prior art and its problems]

In general VTRs and PCM audio tape recorders, a simple tape address (such as "P1" durum order) is recorded along with information on the cue track at the beginning of each program on the tape, and this tape is used during playback. It is widely practiced to search for a program by specifying an address as a desired address and comparing this desired address with the above-mentioned tape address read from the header.

For example, on a recorded tape, the recording order of programs is displayed, and an absolute address type random access device has been devised that allows the user to play back the target program simply by setting this number.

Figure 1 shows one θ11 of the tape for random access.
For example, j1 is a conventional example of an address assigned to a cue track in correspondence with an information program.

(al) In the figure, 11 cograms PI, P2...P5 are recorded from the starting point (1)S) of the program, and the recording order is not indicated at these starting points, but the tape address PN 1° PN2 .
...Record PN5.

PNI, PN,! ...are numbers 1 and 12 for convenience...
, and when accessing, specify this number as the target address. The access operation will be explained below.

The cue head RPH is now at the beginning of P4, and in order to access address PN2 at the beginning of P2 from this position, 1. Set the target program number PN2 = 2 in the access control circuit (not shown), and move the tape in the direction of the arrow. Make it fast forward.

Eventually, the tape address of P N 2 is detected from the head following P N 3, and when the tape address from the head and the desired address match, the tape drive is stopped, an appropriate position correction is made, and 2 normal playback operations are resumed. All you have to do is let them do it. However, in this method, the search direction on the tape must be determined from the current tape address by taking the difference between the tape address from the head and the desired address, so the tape addresses are arranged in a fixed direction on the tape and increase. must be recorded accordingly.

However, (a2) when it is necessary to rewrite program P2 to another program as shown in the figure, for example, three new short programs P21. P31. P
If you want to change to record a +, write tape address PN2' at the beginning of each.

It is necessary to add PN3' and PN4' and record it additionally.

At this time, considering the tape address of this part from the beginning θ111 of the program, the tape address is 2.3.4, that is, the program order is 2.3.4.

However, P3 in the (al) figure. P4. P'5 already has P
N3=3. PNa=4. PN5=5 is recorded as the tape address, and <a2) PN3'=3 in the figure.
There may be overlap with PN6' = 4 or the sequence on the tape may be backwards or forwards. For example, PNa'=4 is P N
Sometimes 3 comes before 3. Therefore, as it is, the addresses are not increasing sequentially on the tape, so
It is not possible to search automatically. Therefore, P3 in the (a2) figure. P=.

P5...'s first address PN: +, PNa.

PNa... are each <b1 as shown in the figure (PN5.PNa.

Number of additional programs 2 +l1i like P N 7...
It is one minute, so I have to shift it six times and rewrite it.

Due to the nature of tape recording, all addresses after the added position must be rewritten.

゛ Also, based on figure (al) (as shown in figure C1, the order of addresses goes up by one address or more, so PN3.PN4.PNa '... in figure C1 is changed to P
N2. PN3. PNa... will be recessed. In either case, if the program order changes, all addresses must be rewritten.
On tapes recorded over long periods of time, this takes a lot of time and is completely impractical. One method that has improved this drawback is the so-called B-Lee (memory table (hereinafter referred to as DRC) method, which manages the recording position of the nib chogram), which is used in tape and ISO memory. Tilev 1 edge-DRC is shown as a dotted line DRC in Figure 1 fb) and (C).

In this case, a memory table for recording the program recording position is set up in a part of the signal recording medium, that is, at the front end of the tape, and the name (or number) of each program and its starting tape address are recorded. . In the memory table, for example, when a program 1:1 program is added, there is only one tape address attached to each program name, and the correspondence between each programmer's name and tape address is recorded.

That is, programs that are not added use their original tape addresses as they are, and programs that are added have new tape addresses. Therefore, tape addresses are not necessarily arranged in numerical order from the beginning of the program. In other words, when a tape cassette is installed in the device and a program is added or changed, the DRC is temporarily stored in the sofa memory in the device. I) of the tape for the first time just before removing the tape cassette.
Move the buffer memory contents mentioned above to the RC area. Also.

To search for a program, enter the name (or number) of the desired program and press the star button. First, the DRC section is reproduced and the end address value containing the desired program is found from the DRC contents. That is, by searching the tape address attached to the program recorded in the DRC.

A method that allows you to output the desired program contents.
c) Tip address PN1 indicating program P1 in the diagram
This can be achieved by providing the DRC at the starting end TS.

However, in this method, when adding or changing a program, when removing the tape cassette, it is necessary to rewind the tape to the start end srs and update the DRC, as described above.

Furthermore, during playback, when the cassette 1- with the tape in the middle is loaded, it also takes time to go to retrieve the DRC4c#ji. This requires several minutes of rewinding time for the i6, which was located at the end 11114 of the tape at the time of installation, and is not practical for consumer equipment. In this way, in a tape-type magnetic recording device that records addresses according to program order and performs random access, the program I-I
There has been no practical method for easily regenerating grams due to various drawbacks.

[Purpose of the invention]

The present invention eliminates the above-mentioned drawbacks, and provides a program/program that is easy to set up and allows arbitrary changes such as addition and deletion of programs.
To provide an access method [Summary of the invention] At the beginning of one program, the time of each second is recorded as a time address code on a cue track different from the main track at a tape position that advances every second. And finally, write the corresponding time address codes in the RAM (random access memory) in the device according to the program recording order, using that order as a RAM address.

A method that allows you to easily access the desired program by simply specifying the program recording order.

Moreover, changes such as program additions and deletions can be made by instantly shifting the time address code stored in the RAM on the address in the RAM, that is, the time for rewriting the RAM can be determined. The recording order of the programs on the tape corresponds to the RAM address, and the content of each address stores a tights address indicating the position on the cape, and the order of the time addresses also corresponds to the program number order. Since the program number is increased according to the time address, it is possible to specify the program order, that is, the program position, from the time address, which eliminates the hassle of rewriting all program numbers (PNl, PN2, etc. in Figure 1) on the tape after the change, as in the past. You can get the ideal program search system. Furthermore, unlike the DRC method, there is no need to rewind the tape to the beginning when adding or changing a program.

[Embodiments of the invention]

Figure 2 shows an example of the structure of a time address code recorded on a cue track, including a time address consisting of minutes and 2 seconds with word synchronization at the beginning, an ID code for identifying a tape recorded on another person's recorder, and an identification code for a tape cassette. The number is composed of words with an appropriate number of bits, and is sequentially recorded on the cue track, for example, every second. Figure 3 shows one program of time address code to be stored in RAM. Only the time address (minute 1 second) part of Figure 2 is taken out and the starting value of the program is scooted as shown in Figure 3.・Tights...address, and the ending value is called the end time address.

For example, if the maximum recording time for one tape is 4 hours,
Each can be represented by a minute code of 3 bits and a second code of 5 bits, and a total of 28 bits constitute one word. Figure 4 t
a) represents the configuration of the RAM, which consists of a time address data section and its index section. FIG. 4(b) shows the program address i, a of FIG.
There is a third directory in RAM with L, , directory.
The start time 71 in the figure and the end address are each stored in 14 bits.

Assign the first program from the start of the program to RAM address 1, and use the time check 1-res AI at the beginning and end of the program as its data]1. Pair AD+1 and write j+I sir Qle. below.

Put the second program at address 2 AD2. AD22 is stored sequentially.

ff8. The ID, code, cassette number code, and program start mark shown in the '82 diagram are unique to the tape and do not need to be stored in the RAM.

Figure 5 (al is the starting end of the tape cue trunk at 0 minutes 0
Record the program until 19:01 seconds as 0 seconds.

Using this method, the 41 program numbers of P1 to P4 are added to this ([j & J], as shown in Figure 5(b).
(C) shows the arrangement on the tape when programs are added and deleted midway based on (al).

FIG. 6 shows an embodiment of the present invention in which the time code shown in FIG. 5 is recorded in the queue trunk, and the time address is assigned to the RAM in correspondence with the BL:J-gram.5 Furthermore, an automatic search is performed. This is a block diagram of

Using FIGS. 5 and 6, a method for recording time addresses in RAM before recording an information program will be described.

When recording information from the beginning of the tape, the tights address generator 1 shown in FIG. One word containing :00 seconds is generated. This signal is output as a head recording signal S2 from the recording amplifier 2 and is sent to the cue from the REC side of the changeover switch 3 (SW+).

The data is recorded in the queue trunk 5 through the code 41RPH).

The signal recording on the queue trunk 5 records an address code of 0:00 seconds at the program start point in FIG. 5 (=1).

On the following track, 0:01 seconds will appear after 1 second, and 0:01 seconds after 2 seconds.
;02 seconds is proportional to the tape running time.

Recording will be performed sequentially below.

Here, if the first information program is Pl, then Pl
If the user determines the starting point A to be the beginning of Pl, the time address 0:00 seconds at this time is stored as data in the start time address section of address 1 of the RAM via changeover switch 7 (SW2). That will happen. The microcomputer is provided with the address code RAM 6 of the Quim Atres, and controls data read/write 1- and arrangement changes. The output of timer]-response generator 1 is input from the REC side of SW 2, and the RAM address designation signal S5 is designated to address 1.

When a write command is given, 0:00 seconds is the start time address section of address 1 of the RAM shown in FIG. 4(b).

Zunawara Figure 4 (AI in BL) Marked at + position ・1. a.

Incidentally, when storing, it is assumed that the RAM address S5 is automatically incremented by one address for each write command S3. Then there is a 0 on the tape
:01 seconds, 0:02 seconds are recorded, and the user presses P again.
If 5:00 seconds are reached when writing 2, write command S3 is given.

5:00 seconds is the start address part ΔD2 of RAM address 2
Also, 4:59 seconds, which is one digital value smaller than 5:00 seconds, is the number 1 en!・1 is written in the address section Al)++.

Thereafter, the start i5:ot seconds of P3 is stored in the start address field AD3 at address 3, and 15:00 seconds is stored in the address field AI) 22 at address 2.

Next, a method of searching for an arbitrary program using the time address of RAM 6 will be described. As shown in Fig. 5+al, switch RP I-1 is at point B at the 1-rank position.
Switch 2 to play bank PB.

Store the desired program in RAM6, for example P2, in RAM6.
When specifying the address in S5 and inputting the read command S4, since the time address of P2 is stored in the RAM address 2, the start and end values AD2. 5:00 seconds and 15=00 seconds of AD22 are read out and input as S6 to the air/response comparator 9 through SW2.

On the other hand, the signal read out via cue head RP 1 (located at point B on the tape as shown in FIG. To Kuimuchi l-res 1f:
This is decoded as 00 seconds and input to the address comparator 9 as the position of the cue head on the tape. In this state, address comparator 9
Since the address 5200 seconds and 2:00 of 87 are compared, the determination output S8 towards Zachika is used as an instruction to run the tape in the direction of the arrow in Fig. 5 (al), causing the tape to run at high speed. When the search target is further on the tape than ΔD4, S8 outputs an output with the opposite sign).

The reproduction output S2' of the cue throat RP l-1 gradually decreases toward the start address of P2 at 5:00,
Finally, the start address 5:00 of the target address S6 and S
If the number 7 matches, an address match signal S9 is output, and a circuit (not shown) controls the tape drive system to correct the position by 6 and then playback starts from the beginning of P2.

Next, we will discuss high-speed interlaced playback. For example, while playing back one program P2, the header comes to the end of the program and the 15:00 of signal S1 is output as 15:00 as well as the end address of program P2 specified by the user. If there is no new designation by the user and the time address of the new designated program is not output to 36, the process goes directly to P3. Pa
Continuing with 'J' and 'II'. However, if the user plays another new Proguera J or Pll before it matches Endor (-res) of S7 or P2, the LEET command of 1 for example Pa has been given, so Ss Pa
The start address 1711 and the end address 19:01 are output in parallel with the time address of , and by determining this, the address comparator 9 jumps between the end address position of P2 and the start address position of Pa at high speed. Beyond.

It is also possible to continue playing Pa. (Zunawaji random access operation becomes possible).

Next, it will be explained that the addressing of the RAM 6 can be done not at the same time as information recording, but also during reproduction. However, the recording of the time address on the tape shall be done at the same time as the information recording. This method converts SW 2 to PB-ADR
Then, switch SW+ to PB again.

Set address 1 to 85 in RAM6 and start playing from the beginning of the tape.

At this time, the time address code recorded in the Gyutranoch is demodulated, and at step S7, time address data starts to be input from ζSW2 to the RAM6.

At this time, when the first program starts, at AD+ in FIG. 5, when the lie 1- command S3 is added to the RAM 6, ΔDl is written at address 1 in FIG. a. Addressing can then be performed using the same operations as described above. This function is suitable for tapes recorded while the user was away. In other words, when the user is away.

When recording on a tape that consists of RA, the user cannot issue a write command when updating the program, so
It is executed without writing time address data to M6. Once the tape has been recorded, it is played back when the user returns, or at the time of playback, the scoot time address and time address of each program are written in the RAM 6 using the method described above.
It will be understood. Therefore, after that, random access operation becomes IJJ function.

Next, the case of changing and adding a new program in the middle of a program will be explained using FIG. 5 (bl).

Figure 5 fbl inserts three programs, P2 +, P3 I, P, and I+, into the P2 section after the addressing in Figure 5 (al), and although the first address AD2 of P21 on the RAM remains the same, P31.Pil
The start and end addresses of l change, and furthermore, the address in Figure 5 (a
Leave address data as is for PB and Pa of l, and set R
It is necessary to shift the address of AM6 two places forward.

First, the RAM contents of ta+ in Figure 5, that is, the RAM before change.
Let's compare the content of Fig. 41ffi with the content of Fig. 7 (changed as in Fig. 5 (bl)).

The specific method in the present invention is to first change SW+ to PB,
SW2 to PB, seven positions to ADR position.

Put the cue track into playback mode and play the timer I record chord. In other words, the signal for this time address code is timer]・Reply 81! , demodulated as a time address code by unit 8, and SW 2 as S7.
The address code begins to be input to the RAM 6 from then on.

At this time, the new information signal to be added, that is, the program P21, is recorded in the main I-rack in parallel with the address code ↑, queue 1 to rank to be added, and eventually the next new information signal That is, recording of the program P31 begins.

If the user specifies and inputs the write command S4 in the RAM 6 just before P31 is recorded, the contents of P2 that was previously recorded in P31 will be erased and recorded in the middle of P2, which was originally included, just like P21. Therefore, at this point, as shown in FIG.
AD3' is written in the star time address section at address 3, and ΔD22', which is one address before this, is written in the end time address section at address 21. will be taken.

When Pal and P3+ are written, PaI is also written in the same way, and the addresses after P3 in tb+ in Fig. 4 are shifted two addresses ahead, and ADa' and AD33' are also written to the RAM in the same way.
Memories can be completed.

In the RAM 6 written in this way, the recording order on the tape of the program shown in FIG.
31. Pa1... and RAM address 1゜2.3.4...
They are lined up in a manner that matches them.

At this time, 1. For example, if you want to search for PaI, input address 4 to 85 of RAM 6. The time addresses ADa' and ADaa', which are the contents of address 4, enter address comparator 9 via S6, and the reproduced time Address (S7)
You can automatically search for the desired program by comparing it with .

Next, when deleting the program P3 shown in FIG.
By inputting M address 3 into 35 of RAM 6 and then giving a deletion command (DEL) S 1+, AD3 and AD33, which are the contents of address 3, are erased and the data from address 4 onward is controlled so that it is carried forward. do. At this time, the data at address 3 of the main trunk still remains, but R
Since no time address is stored in the AM6 address, it is the same as if it had been erased.

When holding a plurality of tapes, if the RAM information formed as described above is directly inserted into the tape library, it becomes impossible to distinguish between the tapes. For this reason, record the unique number of the tape in the tape cue trunk as shown in Figure 2 (cassette l-NO).The area should correspond one-to-one with each tape.Then, the starting address of each area should be recorded. contains the quim address code of the first program (Pl) of each tape.At this time, when the cassette number is specified, the address signal of RAM 6 indicates the first address of the area corresponding to that cassette. Therefore, it is necessary to provide a correspondence table of the start address of each area in one area of the RAM corresponding to the number of each cassette I, and this is called an index section.Furthermore, using this method, There is a possibility that recording tapes produced with other machines may have the same number (=I), and duplication of cassette numbers will occur.Do not use such a tape in your own device. In that case, it depends on the size of the case.

A malfunction may occur in which a program content different from the desired program number is read out, so to prevent this, an Il) number unique to the device may be recorded on the tape, and this may be identified at the time of access. If the ID is different, use another method.

For example, as shown in FIG. 2, a mark representing the start point of each program may be recorded in a part of the time address code for each start point of each program, so that a relative address search can be performed using this mark.

The method of using RAM explained above is to match the program arrangement on the tape with the arrangement order of the array stators recorded in RAM 6, that is, the time address, but this is not limited to one indirect address. The information may be recorded in the RAM depending on the method. This will be explained below.

For example, for the tape array in Figure 5 (al), the RAM array is shown in Figure 4 (b), or from Figure 5 ta+ (
The RAM information described above has changed due to the change to bl.
The explanation will be based on a one-indirect addressing method without performing a table shift operation.

First, how do I access the tape program? A.M.
6 is read, and from the contents, the writer M address (which contains the beginning address of the tape) is known. If we insert and record P21°P3+, Pa+ instead of throat < P2 in FIG. 5(b) without shifting this RAM table, the RAM table (FIG. 4(b)) will have the start value Δ of P21. []2 does not change, but end value A
I) 22 as AD22' as shown in Figure 4 (b')
Change to Next, P31 star 1 value Al) 3' and A
I): +3' value.

In addition, shift Δl)4' of Pa+ and AI)da' to addresses 3, 4, etc. of RAM6 to address 2, etc.

・Instead of storing it in U, store it in vacant recording addresses 6 and 7 on RAMG. However, due to this operation, AD2's address 2 is inadvertently shown in Figure 4 (
As shown in C), the gram P21 corresponding to address 2 is
The RAM addresses corresponding to 1) l and P31 of the previous and subsequent programs on the tape are added as data, including BEFORI address 1 and NEXT address 6. That is, AD2's address A
D, 3' is address 6 in RAM, and BEFORIE address ADa is address 1 in RAM. Similarly, N of AD3'
EXT address Δ1)4' is RAM address 7, BEFO
Since the RE address ΔD2 is at address 2, AD is at address 6.
Along with 3', 7 and 2 are stored and further AI) NE of 4'
XT address ΔI) 3 stores 3 and 6 in RAM.

If this is done, the contents of the RAM will become as shown in FIG. 4 (C1).

Now, if you want to search for the fifth program P3, the first address of this tape is address 1.

Read AD+ and know this NEXT value, that is, position 2 of P2+ of the 2nd rfi program. Then Δl) 2 N
Position 6 of the third program P31 from E
From the NEXT of ΔD3', we know the address 7, which contains the fourth program P41, and from ΔD4', we know the address 3, which contains the fifth program P1:J-gram P3. Access AD'3.

ζ, the address jumps 5 times, and the address of the 5th program P3 is 3 A I',) 3
The value ΔD:1 is set as 86 in the address comparator 9 of FIG. 6 to complete the input setting.

Cue 1 - I'? from the rack played from the head as described above? When t and uS7 match, the program search is completed.

Also, use the start point mark (relative address) of the 1:J-gram set at 1n1; of the time address code.

You can also create directories quickly. That is.

This technique is useful, for example, when creating a directory when you have obtained music, record tenor tapes, etc. by recording the start point mark and time address of the program.

To create a directory, switch SW+ to PB.

Set SW2 to the P B/ADR side, and while running the tape at high speed from the beginning of the tape, set the program start mark to the beginning.
” Use 1 moxibustion for RP 114. This mark (i
j-'';f S 2 ', separated by time address D':, 1-D8, and outputted as 87'.

37' is Rai I/Command S3 of Mike Pino Computer 6
The time address S7 of that point, which was input at the same time, is recorded at the corresponding address in the RAM. Below '2
Similarly, the starting point mark of 1-command S3 acts as °ζ,
You can create directories automatically one after another.

In addition, in the explanation so far, we have described how to record the response message in the queue trunk, but this is not the only example.
It is also possible to record the two address signals of the present invention using one portion of the helical track of V"l"R in the longitudinal direction.

In this case cue head RI) I-(is 7+ to video)
However, when performing high-speed access, the relative speed between the head and the tape changes, so the address signal must operate the track intermittently and partially. However, as it approaches the destination address, the speed is reduced by two steps, and the track can read the address signals gradually and more densely.

This eliminates the need for a dedicated cue head or trunk, making it more economical. Furthermore, in this case, it is desirable to turn on the head and turn on the address recording part of the helical track, and since it is desirable to turn on the head and turn the head on the address recording part, it is necessary to control the tracking of the tape feed and cylinder rotation speed, or the door opening unique as necessary. You can also do it.

〔Effect of the invention〕

According to the program access method of the present invention.

A time address code that increases with the recording progress of the information signal is recorded on the tape, and the time address corresponding to the tape position is stored in the RAM in the device.The program number of the ladder is made to correspond to the address in the RAM and recorded. When making changes such as adding or deleting programs, there is no need to change the program number on the tape, and there is no need to rewind to the beginning of the tape. Then, by specifying the desired program number, you can move the header to that position and play, add, delete, etc. the program.

[Brief explanation of drawings]

FIG. 1 (al), (a2), (bl, (cl) is a plan view showing a conventional example of Alres attached to a tape, and FIG. 2 is a tie j address used in the program access method of the present invention. The code configuration diagram, FIG. 3, is a configuration diagram representing one program of the time check code stored in the RAM in the program 1: J9 access method of the present invention, and FIG. 4 (al, (bl) , (C1 is RA
Data structure circle showing the contents of M, Figure 5 (Ill, (b
), (c) is a block diagram showing an example of an address written to a tape by the program access method of the present invention;
FIG. 6 is a block diagram of an embodiment of the program access method of the present invention, and FIG. 7 is a data configuration diagram showing the contents of the RAM. ■...Time address generator 2...Recording amplifier 3...Selector switch (SWl)
4...Queue head'RI (P) 5...Queue trunk 6...RAM in the microcomputer 7...Selector switch (SW2) 8...Time address demodulator 9
...Address comparator Pl, P2. Pal...Program PNI, PN2...Tape address Patent applicant Yoshiyuki Inu Suga, patent attorney representing Sansui Denki Co., Ltd.

Claims (13)

[Claims] (1) A time address code proportional to the recording length of the program is recorded on a magnetic recording medium, and at least the time address of the program recording start position is recorded. LJ corresponds to the recording order of the program on the tape. A program access method for a magnetic recording/reproducing device, characterized in that a desired program is searched for by storing it in a memory and setting a numerical value representing the recording order of the program. (2) Store a time address code corresponding to the recording position of each of a plurality of programs recorded on a magnetic recording medium,
It has nine circuits in which addresses indicate the order in which the programs are recorded on the magnetic recording medium. 2. A program access method for a magnetic recording/reproducing apparatus according to claim 1, wherein the contents of said storage circuit are changed in accordance with a change in said program. (3) The time address value corresponding to the recording start position of each of the plurality of Plograms recorded on the magnetic recording medium is used as the address in the order in which the Plograms are recorded on the magnetic recording medium. Write in the memory circuit 1. By accessing the 19th century circuit in the recording order of the blocks and comparing the time address code read out with the time address code recorded in the queue rank of the magnetic recording medium, A program access method for a magnetic recording/reproducing device according to claim 1, characterized in that a program is searched. (4) a time address generator that generates a time address proportional to the recording length of the program on the magnetic recording medium;
a first selection circuit that selects information from the time address generator and writes it to a cue track on the tape when writing a time address, and adds the time address of the cue track to a time address demodulator during playback; a memory circuit for storing, a time address signal from the time address generator or a time address signal from the time address demodulator when writing to the nine circuits described above, and a quino from the memory circuit when reading; A second selection means for selecting address information, and an address ratio softener for comparing the time address signal read from the 0 circuit and the time address signal output from the tie J address demodulator. A program access method for a magnetic recording/reproducing device as claimed in claim 1. (5) Address information is stored in the contents of the ``1a circuit'' to the corresponding address in accordance with the address of the memory circuit that is changed in accordance with the recording order of the BU I-niagram as the program is changed. A program access method for a magnetic recording/reproducing device according to claim 1, which uses an address change method. (6) In each word of the ten circuits, which are accessed in the recording order of each of the plurality of programs recorded on the magnetic recording medium, there is a time check mark corresponding to the start position on the recording medium of each of the programs. In addition, the scope of the claim is characterized in that an indirect addressing method is used to store the addresses of the above programs (, 1 circuit) corresponding to the preceding and succeeding programs that are consecutively recorded on the recording medium of each program. The program for the magnetic recording/reproducing device described in paragraph 1.
Access 11 type. (7) Program I-1 program J of the magnetic recording/reproducing apparatus according to claim 1, wherein an identification coat of the tape is recorded together with address information 1-' of the program.
access method. (8) The magnetic recording/reproducing device program access according to claim 1, wherein an identification code of the device is recorded together with an address of the program program. method. (9) B) Two! Record the mark code representing the starting point of the gram along with the 7 trace code of the program. If the identification code is different from the own code when accessing the program, the start point of the program is automatically selected as a relative address value, and an intermittent search is performed. A program access method for a magnetic recording/reproducing device according to claim 7. (10) Entry of specified program]... Before detecting the time address - When a new program is specified When the first specified program ends,
The start time of the newly specified program.
A program access method according to claim 1, characterized in that the program access method jumps to an address. (11) The area of the storage circuit is divided into a plurality of areas corresponding to a plurality of cassettes/seven tapes, and the cassette and the start address are set so that when a specific cassette is specified, the start address of the corresponding area is addressed. 2. The programmed access method according to claim 1, wherein a correspondence table is provided in said storage circuit. (12) Run the tape on which the start point mark and time address of Program 1, which is the reference for the relative address, are recorded, and each time the start point mark is detected, the time address of this position is stored in the RAM address in the order in which the mark is detected. 2. A program access method for a magnetic recording/reproducing apparatus according to claim 1, wherein the program access method for a magnetic recording/reproducing device automatically stores the information in correspondence with each other. (13) A program access system for a magnetic recording/reproducing apparatus according to claim 1, wherein the time address code is recorded in a helical rank of the magnetic recording medium.