JPS6185688A - Automatic selecting device of recording information - Google Patents

Abstract

PURPOSE:To select recording information automatically without touching with a reproducing head and a magnetic tape by reading a tape traveling quantity corresponding to the number of designated record rank from a memory means and selecting prescribed information based upon the traveling quantity. CONSTITUTION:When the number of a prescribed music number recording rank is designated through a key input part 1, a tape 8 is rewound through a CPU4 and stopped at the starting end, the external RAM5 is accessed with a recording rank as an address, a counter counted value of the corresponding tape traveling quantity is read and written in the external RAM41. The tape 8 is quickly fed, and a pulse signal, which synchronizes with rotation of the reel motor outputted by a sensor 17 for detecting a tape traveling, is counted by CPU4, the counted value is consistent with the counter counted value written in RAM41, and until then, the tape 8 is quickly fed, the music head of the designated music number is retrieved without touching a head 9 to the tape 8 and the damage and wear due to the retrieval of the head and tape can be prevented.

Description

[Detailed description of the invention]

[Technical Field of the Invention] The present invention relates to an automatic selection device for recorded information in a magnetic tape playback device such as a tape recorder. [Prior art and its problems] Recently, there has been an automatic song selection device that automatically selects a specified song from among a large number of songs recorded on magnetic tape and plays an IF live. Various types of force-set tape refugs have been commercialized. The operating principle of this automatic one-track device is that a detection circuit f- is provided to detect a predetermined frequency signal recorded in advance between silent parts or between tracks from the reproduced signal, and this detection output is counted. i) The song is played when the specified song count matches the count value. Therefore, when performing automatic I bending, the tape must always be run with the playback head in one-sided contact with the magnetic tape running surface (Qi1), and if this automatic music selection iR1+ production is performed for a long time There is a risk that the playback tip may be worn out and the magnetic tape may be damaged. The number assignment method uses a relative song number designation method, that is, RJi for the currently played song. There are two methods: one is to specify the song number as the absolute song number, and the other is the absolute song number specification method, which is a method that specifies the external note order itself counted from the beginning of the tape as the song number.The relative song number specification method of ω! Since it is necessary to specify the song number by taking into account the number of the previous seven songs in ZtL that the song is currently playing, the method of assigning the song number is to specify the song's recording position itself. It can be said that the absolute track number designation method is superior in terms of performance. However, in order to automatically select songs using the absolute track number method, it is necessary to select The tape is rewound to the beginning with the tE14 song operation, and from then on, song m) is detected in any running mode, and the song m) currently connected to the playback head is detected.

[It is necessary to always manage the absolute song number, which is the number of songs counted from the beginning of the tape at the position 7 on the tape. Therefore, the reproducing head and the magnetic tape are always in contact with each other, and the above-mentioned adverse effects such as wear on the reproducing head and damage to the magnetic tape are increased compared to the relative address system. [Object of the invention] The present invention was made in consideration of these nine circumstances,
It is an object of the present invention to provide an automatic selection device for recording 11 reports that can extremely effectively reduce the various adverse effects described above. [Summary of the Invention] In other words, the automatic selection device of the present invention is provided with a storage means that sequentially stores the recording order number of information and the tape travel distance in association with each other, and records that have already been recorded (Δ) are stored in this storage means. When the number of rankings is specified, the corresponding tape travel amount is ¥!
, and the desired information is selected based on the read tape travel amount. [F4 construction of 2AI actual example] The construction of the 91st example of misfire will be described below with reference to the drawings. 1 in Fig. 1 is a key human power section, and this key human power +;t
; Part 1 includes a running designation key part 2 that specifies the running of the Gods' tape, and a music selection designation key part 6 that designates a specific song on the tape.
and the driving designation key part 2 is a reproduction key (P L
A Y) 2 hs fast forward key (P IF) 2 bs rewind key (RICW) 20 and stop key (s'rap) 2
d, music selection designation key part 3 is numeric keypad 61% clear key 3b, set key 3c and program play key 6
It consists of d. The program play key 3d is a key for playing only the songs whose numbers are specified using the numeric keypad 6a in the specified order. The j'p operation signal of each key of this key human power section 1 is given to 0PU (central processing bag 1α) 4, and the processing of the fences is realized.
1% R based on the calculation processing of 42 AI,
It is preset in AM (random access memory) 41. This internal RAM 41 has a storage area 4 as shown in FIG.
Consists of 1-1 to 41-20, current counter, target count value, target song number, current song number, total number of songs, number of songs with known count value, target count value song number, total number of songs known flag, current song number known flag , each designated song number from the 1st song to the 6th song, a song order counter, sound/no-sound already, known flag, sound 7 lag, winding time counter, and current running state are stored in memory. The current counter 41-1 counts and indicates the tape count value at the current tape winding point, and the target count value 41-2 indicates the tape count value at the beginning of the song to be selected and played. indicates the song number from the beginning of the song to be selected and reproduced, and the current song number 4l-4G: indicates the song number from the beginning of the song at the current tape winding point. Total number of songs: 4
1-5 indicates the total number of songs recorded on the tape, and number of songs with known count values 61-6 indicates the number of songs from the beginning to the song whose tape count value is known among all songs, and the target The count value song #841-7 indicates the song number corresponding to the count value set as lXJpine in the song search at the time of the introductory song. In addition, the total number of songs known 7 lag 41-8 is set when the above total number of songs is known, and the current song number known 7 lag 41-9 is set when the current song number 1 is known, and the 6th from L& Each designated song number up to 41-10 to 41-15 is composed of set areas 41-10 to 41-15 in which the playback song number when performing program play is preset in the set type, and the song order counter 41-16 is recorded as follows. Indicates whether the selected song of the specified song numbers from the first to the sixth @ has entered the song selection/reproduction process. The sound/non-sound known 7 lag 41-17 is set when the playback head is in contact with the tape running surface and it is known whether the current tape winding point is a sound part or a silent part.
1-18 is set if the current tape winding point is a sound part, the winding time counter 1-19 detects the winding end of the tape by counting operation, and the current running state 41 20 indicates each running state of the tape. It shows the distinction between From the 0PU4 mentioned above to the external RAM 5, 7 dress data and continuous/write A3 are given, and the tape count value at the beginning of the track on each side of the tape is written in correspondence with the track number. Rare or read. σ) External RAM5 is the 3kth
The configuration is shown in , where the tape count value at the beginning of a tape track corresponds to the track number. It goes into the response area from the first song to Oboro ni Sera) 2, and is used to cue the beginning of the program play 1 song. Also, from the above 0PU4 to the drive circuit 6, there is a PLAY (playback) signal.
Signal, REiV Engineering
(fast forward playback) signal, RIW (4 return) signal, FP (
31 control signals such as fast forward) signal and TOP (stop) signal are not given, and the drive circuit 6 operates based on these signals to control the solenoid and reel motor etc. (f not shown) provided in the tape movement mechanism 7. The operating pressure is applied to realize each run of the cassette type magnetic tape 8. The playback head 9 in the tape running mechanism 7 comes into contact with the running surface of the magnetic tape 8 to obtain a playback signal. The sound is emitted from the speaker 13. This reproduction signal is also given to the utterance/silence detection circuit 15 via the amplifier 14, and the utterance/silence detection circuit 15 determines the level of the reproduction signal and is in a high state during reproduction of a sound portion, or in a high state during reproduction of a silent portion. A sound detection signal that enters the IOW state during playback is given to 0PU4. The otrm signal from 0PU4 and REV1 are sent to the utterance/silence detection circuit 15.
A 1CW signal is given as a control signal. This control signal lowers the level of the playback signal during fast-forward playback or rewind playback, and then determines whether there is sound or no sound.As a result, during high-speed playback, the sound pressure level is higher than during normal playback. Malfunctions are prevented. 77) OUK signal and RIVII! i
The W signal is also given to the Miate circuit 16 as an operation signal. The termination circuit 16 lowers the playback signal from the preamplifier 11 to the ground level when operated by inputting these signals, and is constructed so that no sound is emitted during fast-forward playback and rewind playback. Inside the tape running mechanism Z is a tape running detection sensor 17 that generates a pulse signal in synchronization with the rotation of the reel motor.
The pulse signal output from this sensor 17 is waveform-shaped by a waveform shaping circuit 18, and then outputted from the OP.
The tape running detection signal O is given to Tl4. Further, a loading detection switch 19 for detecting loading of the magnetic tape 8 is provided in the tape traveling machine 117Z, and this switch 19 is normally installed in a table hooder, as shown in FIGS. 4(A) and 4(B), for example. It has the same structure as the accidental erasure prevention tab detection switch that is used for magnetic tape 8.
When the magnetic tape 8 is loaded into the tape traveling machine 117, the loading detection switch 19 is opened and the level is 10W, and when the magnetic tape 8 is taken out, the switch 19 is closed and the level is high.The loading detection signal a is sent to the 0PU4. The configuration is as follows. [Operation of the first embodiment] Next, the operation of the present embodiment will be described, and various 70-processes will also be explained based on the tape running example shown in Figure m15. The outline of this will be explained based on FIG. 15. When the magnetic tape 8 containing music for eight songs is loaded with the third song partially wound up, and selection playback of the fifth song is specified. , first rewind to the beginning (pt~P2),
Fast-forward playback is performed from the beginning (P2 to P3). During this time, a voice/silence process is performed to search for the beginning of the fifth song, and at the same time, the tape count value of the beginning of each song is sequentially stored in memory in association with the song number. Then, when the fifth song is to be reviewed, the program rewinds to the silent part immediately before the beginning of the song to prevent the beginning of the song from being cut off (P3 to p+) and reproduces the fifth song (P4 to P5). Also, normal rewind ps-P6), fast forward (P6-P7)
), normal playback (P7 to P8) can also be performed. Next, when program playback of the 2nd, 7th, 10th, 6th, and 8th songs is instructed, the tape count value at the beginning of the 2nd song has already been stored in memory during fast-forward playback from the beginning of P2 to P3 to the 5th song. ILNOTE searches for the second song (PS~PIO) and plays it (PI) based on this tape count value.
Perform steps O to P11). However, since the tape count value at the beginning of the next 7th track is still unknown, it is necessary to fast forward until the 5th track for which the count value is known.
From then on, up to the 7th song, fast-forward playback is performed as in P2-P3, and while searching for the beginning of the 7th song, the count values at the beginning of the 6th and 7th songs are further memorized (P12-P13).
. Then, after playing the 7th song (P13-P15), this time 1
In order to search for the 0th song, fast-forward playback is further started from the end of the 7th song, and at the same time, the count values at the beginning of the 8th and subsequent songs are stored in memory (P15-P16). However, since the tape only has up to the 8th track and is wound to the end, the 10th track is not played. By fast-forwarding playback up to this gel, you will know the count values of the song order of all songs, and from now on, you can perform your own search based on each count value. The search is performed based on the count part and is not played.
PL6-P22). The above operation is divided into processes and will be described in detail below. Reproduction of a 5th song (PL4P5)> (P1 to P2) As described above, it is assumed that the fifth song of the magnetic tape 8, which contains music for eight songs, is selected and reproduced. Therefore, when the magnetic tape 8 is loaded into the tape running mechanism 7 after winding up to the middle of the third track, the loading detection signal a
becomes LOW level, the CPU 4 detects the fall of this signal a, clears the internal RAM 41 and the external RAM 5, and writes r to the current counter 41-1 of the internal RAM 41.
Set 500J. The preset value of the current counter 41-1 is set to the current counter 41-1 by rewinding to the beginning of the tape when a partially wound tape is loaded.
1-1 is set as a value that does not become negative even if h is decremented. Then, by operating the numeric keypad 6a1, set key 6Q, and program play key 6d of "5" in the music selection designation key section 3, the user instructs the 0PU4 to select and reproduce the fifth song. In response to this key operation, 0PU4 enters "5" in the song order set area 41-111 of internal RA 11t 41 as the designated song number for the first song.
” and starts the operations shown in FIGS. 5 to 8. That is, the CPU 4 uses the song order counter 4 in the internal RAM 41.
1-16 to specify the playback of the first song (Step A1), set "1" in this song order counter 41-16.
The song number "5" in the playback order corresponding to "1" is set as the target song number (step A2). Next, 0PU4 confirms that the target song number is not "0" (step A3), and then checks whether the total number of songs known flag is "1", whether the count value known number of songs is "0", and whether the current song number known flag is set. However, since the magnetic tape 8 has just been loaded and all of these are unknown at rOJ, the RKW signal is given to the drive circuit 6 to cause the tape to run. At step 7, the magnetic tape 8 is returned to the starting end where the current position can be clearly determined, as shown in FIG. 15 PL-P2. During this spring return, the tape count process shown in FIG. 9 is performed. This tape counting process is performed in order to accurately confirm the current running position by counting according to the tape running, and is used for rewinding, fast forwarding, normal playback,
When performing various processes such as program playback, each time the signal C is output, it is ignored as an interrupt process. During the above-mentioned rewinding, a pulsed tape running detection signal C synchronized with the rotation of the reel motor is sequentially applied to 0PU4 from the tape running detection sensor 17 through the waveform shaping circuit 18. Every time 0PU4 detects the rise of this signal C, the 9th
Start the operation shown in the figure. First, the unwinding time counter 41-19 in the i% RAM di is cleared to enable driving. In step B1), the contents of the current running state data indicating rewinding set in the i% RAM 41 are changed to J.
: r) When the tape is running, it is determined that a is running in the reverse direction (step B2), and the current counter 41-1 of the internal RAM 41 is decremented (step B3). This also applies to rewind playback. However, if the playback, fast-forward, or fast-forward playback is running in the forward direction, the current counter 41-1 is incremented (step B4). Through the tape counting process in steps 31 to B4, the running amount corresponding to the running direction of the tape is displayed on the current counter 41-.
1, so that the current driving position can be determined in any driving condition. Also, during this rewinding, the unwinding time counter 41-19 in the internal RAM 41 is cleared and blanked, but when the magnetic tape 8 is rewound to the beginning, a tape running detection signal C is output. Rock cutting time counter 4
1-19 becomes over 70- in the predetermined time, so 0P8
Onkiri 2 is determined up to the beginning of 41 pieces (step Aa). Since this first rabbit is "1" in the song number position, 0PU4 sets "IJIF" to the current song number area 41-4 (Stella 7'A9) and the current song number is known 7 lag area 4.
Set "1j" to "1-9" and remember that the current song number has been determined (step A1o). Also, since this starting position is a silent part, clear the sound 7 lag area 41-18 according to the sound and " 0” and the presence/no-sound known flag area 41-
17 is set to ``1'', and the vil memorizes that the current position is found to be a silent portion (step A11). In this way, the target song number is set in step AI$A2, it is determined in step A3 whether or not the playback of all designated songs has been completed, and steps 4 to A6 are used to rewind the tape to the beginning of the tape. It is determined whether or not it is necessary to know the current track number, and initialization is performed in accordance with the beginning of the tape in steps A7 to A11. <P2-P3> Next, 0PU4 determines that the target song number "5" is ahead of the current song number "1" and takes a step to determine that it is necessary to search for the 5th song by driving in the forward direction. A12), whether the winding time counter 41-19 overflows or
Until the target song number is reached (step A1s # A12
), outputs a signal to 017 to perform fast-forward playback (step A<sr), and performs voice/silence processing (step A1
4). This sound/silence processing detects the change from the If note part to the silent part of the tape and vice versa when the tape is running, and maintains the track number at the current running point and the distinction between tracks or between tracks without error. This is done based on the flow shown in FIGS. 13 and 14. In other words, 0PU4 determines that there is no need to determine whether the current running position is sound or no sound because the sound/no sound known 7 lag 41-17 is rLJ in step A11 (step F1); Current fast-forward playback (OU
E), it is determined that the current track number should be incremented when the sound changes from sound to silence (step F2). As shown in Fig. 16, in this embodiment, the song number is counted at the end of a famous song, and when traveling in the forward direction, the end of the song is passed when there is a sound → no sound, and when traveling in the reverse direction, the track number is counted at the end of the famous song. This is because when there is a transition from silence to sound, the signal passes through the tail, and the processing method is changed accordingly. Next, since the sound detection signal 0PU4 is at a low level, it is determined that the current position is a silent part at the beginning of the tape.Step I'3) Sound presence 7 lag 41-18
Since is set to "0" in step A11 above,
Step F4), 'J Turn and step A15 to determine that the vehicle is partially running.
The processing of IA121A13IA14 (F1NF4) is repeated until the sound detection signal reaches the h1gh level, and the device waits. Then, when the winding progresses to the sound part at the beginning of the first track, the QPU4 detects the sound presence in step p5.
Despite the high level, the sound 7 lag is still r
Since it is OJ, it is determined that the sound part has entered from the silent part (step 7'Fs). Then, OPυ
4 is because the current track number "" is larger than the count value "0", which indicates the number of known tracks in the tape count value, so this ? It is determined that the tape count value at the beginning of the 1st track has not been stored in memory yet (step IPs), and the current location A.
The value of +X is written into the outer 1% RAM 5 as the tape count value at the beginning of the first song (step 7). Now, since the count value of the first song is known, the current song number "1" is added to the count value known song fault area 41.
-6 (step F8), and set the sound 7 lag 41-18 to rlJ during the running of the first song (step 1'9). Here, the reason why the value is set by adding 1 to the current counter value in the external FIARAM 5 in step IF7 is to take into account errors such as elongation of the magnetic tape 8, and to provide a certain margin as shown in FIG. It is something that From then on, during fast-forward playback of the sound part of the first song, the sound detection signal is at a high level and the sound presence 7 lag is "1", so the processing of the sound detection signals F1 to 73 and IP5 is performed using the sound detection signal. It repeats and waits until it becomes Low level. Then, when the winding progresses to the silent part at the end of the first song, σPσ4 goes to step p5 where the sound detection signal goes Low.
Since the sound level 7 lag is still "1", it is determined that the sound part has entered the silent part (step 1'4). Then, CPσ4 adds 1 to the current song number to ``2'', clears the sound flag, and returns r.
OJ and accurately maintain the song number of the current driving point.
(Step F10eFll). In this way, the same process is repeated for the second and subsequent songs, and as shown in FIG. 16, the tape count value memory of steps F1 to P5 and F5 to F9 is performed at the beginning of each song. Step F1~I' 4 r at the end of the turn
The current song number of 'IQ r 711 is counted. In this way, the tape count value of the beginning of each song is stored in memory, and when the reproduction of this song is instructed thereafter, the song is searched based on the tape count value of the beginning of this song. These steps A12 to A15 (A14 = 71 to
711), fast-forward playback is performed beyond the end of the fourth song, one before the fifth song of target rl+ number, and the current song number 41-4 becomes "5" and becomes the target song number 41-6. r5J
If it matches, C! PU4 determines that it has reached just before the target song number "5" in step A, 2), and since the sound 7 lag is "0", it is currently running between the 4th song and the 5th song. It is determined that it is in the middle (step A16), and fast-forward playback continues until the right sound detection signal becomes high level or the winding time counter 41-19 exceeds 70- (steps A17, A18). and,
As shown in P3 of Fig. 15, when the winding progresses to the sound part of the 5th track, the sound detection signal of 0PU4 becomes high level, so it is determined that this is the case, and the sound presence 7 lag is set to "1". '', the program enters the rewind playback (RMV1 original W) process (step A19). In this way, the target song number 173 is traveled to the previous silent part in steps A12 to A15, and to the sound part at the beginning of the target song number in steps A16 to A19, and the target song number is searched. become. (P3 to 25> Next, OPυ4 starts the rewind playback with the sound detection signal low.
This is repeated until the level reaches the silent part immediately before the first and fifth songs (step A20 r A21), and the seven lags with sound are cleared accordingly (step A22). In this step A20 to A22, the 15th FI! Jp3
As shown in ~p4, when playing the searched song, the winding correction is temporarily performed up to the immediately preceding silent portion so that the beginning of the song is not interrupted. Then, 0PU4 outputs the PLAY signal and continues the same voice/silence processing as in step A14 described above until the current song number becomes a value different from the target song number "5", and as a result, the 15th
As shown in 1MP4 to P5, the song with the target song number "5" is played back (steps A23 to A25'). In the voice/silence processing at step A24 in this case, the tape count values are set at steps F5 to F9 at the beginning of the fifth track, and step FA r F at the end of the fifth track, in the same way as described above.
lo The current song number of NXPll is counted. Next, when the playback of the fifth song is finished and the end of the fifth song is reached, the current song number becomes "6", and as a result, 0PU4
determines that the playback of the fifth song has ended (step A25).Then, 0PU4 increments the song order counter 41-16 by 1 to "2" and instructs that the second song should be played. A26), this song order counter 41-16
Since the value of is "2" and is less than or equal to "7", it is determined that the maximum number of songs that can be selected and played does not exceed r6J (step A27), and then the second designated song number P is selected as the next target song number. (Step A2). However, the second @th song is not set, and the content of the second specified song number 41-11 is "0", so aptr4
It is determined that the second and subsequent songs to be played are not specified (step A5), and a 5TOP signal is output to end the song selection and playback process (step A28). <Normal return, fast forward, playback (P5-P8)> Next,
The normal rewinding, fast forwarding, and playback processing will be described. <P5-P6> When the rewind key 2C is operated, the 0PU4 clears the current track number known 7 lag 41-9 and the sound/silence processing 7 lag 41-17, and outputs the REW signal. Normal rewinding is performed until the unwinding time counter 41-19 overflows (steps 01 to 04). In this way, during rewinding, rewinding is performed without the reproducing head 9 coming into contact with the tape running surface, and wear of the reproducing head 9 is prevented. In this case, the current track number known flag and the voice/silence known flag are cleared by the playback RAD9.
This is because the track number at the current location and whether the current location is a sound part or a silent part are unclear because the track number does not contact the tape running surface. In addition, in the case of this rewinding, the utterance/silence processing of step IF1NF1° is not performed, and the count value of the beginning of each track is not memorized. This is because, as described above, since the playback pad 9 is not brought into contact with the tape running surface, the beginning of the track cannot be determined. However, currently the counter 4
The count of 1-1 is performed based on the 70-chart in FIG. 9, and the current travel location is clearly maintained. This also applies to fast forwarding, which will be described next. <P6-P7> Then, when the fast forward key 2b is operated, the fast forwarding process of Xt in the figure is immediately started by the interrelated process, and 0PU4 is the current track number known 7 lag 41-9 and the known sound/silence 7 lag 41. -17 is completed, the FF signal is output, and normal fast forwarding is performed until the winding time counter 41-19 overflows (steps D1 to D4). In this way, even during fast forwarding, the playback blade 9 can be fast forwarded without coming into contact with the tape running surface, and the playback blade 9 can be fast forwarded without coming into contact with the tape running surface.
9 wear is prevented. Further, as in the case of rewinding, the count value at the beginning of each track is not memorized, and only the current counter 41-1, which indicates the current running point, is counted. <P7-P8> Next, if you operate the playback key 2 &, 0PU4 will be changed to PLA as shown in i12[N by the same interactive processing.
Output the Y signal and perform playback processing (step "1"
) Since the current track number known 7 lag 41-9 is "0", it is determined that there is no need to maintain the current track number accurately. The reproduction process continues until the cut-off counter 41-19 overflows (step 1c3). Then, while playing the 4th song σ), press the stop key 2aE.
If operated, the tape running will be stopped by the same interwoven process. (Program playback process CP8-'P22)) Next, A. Aiki tape 802nd song, 7th song, l. It is assumed that program playback of the first, sixth, and eighth songs is performed in this order. For that purpose (well, in the song selection key part 3, use the 1 numeric keypad 3a and the set key 60 to select "2, SET
s 7, SET, to, SET, 6.5ET18.5F
3TJ and program play key 3d. Then, "2.7, to, 6.8" is set in order from the first specified song number in the 0PU4 internal RAM 41, and the operations shown in P. do. <ps~ptt> That is, the above-mentioned steps 1 to A5 are processed, the song order counter 41-16 is set to "1", and this "1"
The first designated song number according to "2j 100 line song number 41"
After setting it to -3, 0FU4 is this target song number 41-
5ka ``o J Te27<, ``2'', and the total number of songs known flag is not rlJ, so there is no need to determine whether the target song number exceeds the total number of songs, and the count value is known. It is determined that the number of songs is not rOJ since the number of songs P2 to P3σ) is found to be “5” by rewinding and playing back. Next, since the target track number "2" of 0PU4 is smaller than the known count@number "5", the search can be performed based on the tape count value stored in the external RAM 5 without rewinding and playing and counting the track number. It is determined whether it is suitable (step A28). Therefore, should 0PU4 set the target song number "2" as the target count value song number in step A2? )% The tape count value at the beginning of the second song corresponding to the target count value song number "2" is read from the external iRAM 5 and set in the internal RkM 41 as the target count value (step A40). Then, 0PU4 determines that the target count value of the beginning of the second song to be searched from now on is smaller than the value of the current counter 41-1 indicating the current location (step A31);
11-RK W signal is output to perform rewinding (step A32), and as a result of this rewinding, it becomes unclear whether the track number at the current location and whether the current location is a sound part or a silent part is unknown. The number known flag and the voice/silence known flag are cleared in step h55, A34), and rewinding is performed until the target count value is reached. As shown in P8 to P9 of Chapter 15 (2), in steps A28 to A34, a search for a song whose tape count value at the beginning of the song is already known is performed, and the playback head 9 moves to the tape based on this count value. This is done without contacting the running surface, and wear of the reproducing head 9 is prevented. When rewinding is performed until the target count value is reached, the current running point is actually the sound part of the second song, which is shifted by 1 minute from the beginning of the song, as shown in No. 1611, so 0PU4 changes the target count accordingly. Set the value song number "2" as the current song number and set the current song number known flag to "1" Step A35 * k
s6), set the 7 lags of sound to rlJ, and set the known 7 lags of sound and silence to rlJ (steps A37, A3a) o
Then, 0PU4 performs the above-mentioned step AI2 r A16 in red as shown in P9 to PIO in the iy, The song with the target song number "2" is reproduced in steps A22 to A25 as described above. <ptl~P15> When the playback of this second song is finished and the end of the second song is reached, the current song number becomes "3", and from this, 0PU4 can distinguish that the playback of the second song has ended. Step A25
), above-mentioned σ) Steps A26, A27, and preparations for voltage detection of the seventh song, which is the next song to be program-played after A2 to A5, are made, and the target song number is set to "7." Since the target song number "7" is larger than the number of songs with known count value "5", 0PU4 determines that the 5th to 7th songs must be searched by fast-forward playback 72&J (step A28). Next, since the current song number known flag is rtJ, 0PU4 decides that the target song number "7" should be considered based on the current song number "3" (step A39), and the current song number "3" is It is determined that the count value i is smaller than 5J, and normal fast forwarding is sufficient for the 5th song (step A40).Based on this, (IFU 4 first sets the count value known song number r5J to the target count value song number). Set it to
Set this fifth song as the immediate target of the search and step A41
), the tape count value at the beginning of the fifth song corresponding to the target count value song number "5" is read from the external RAM 5 and set in the internal fflRAM 4i as a target count value (step A30). And O, pU4 is the 15th
As shown in figure pH~F12, the above-mentioned step person 31~A
34 is performed, but in this case, since the count value at the target point is larger than the count value at the current point, fast forwarding is performed instead of rewinding (step A42). In this way, the playback head 9 is searched without coming into contact with the tape running surface, and the playback head °9
This reduces wear and tear. Next, when fast-forwarding is performed to the beginning of the fifth song, the set of the current song number "5" and the sound 7 lag are set according to the point of the sound portion of the beginning of the fifth song in steps A55 to A38 described above. The set etc. were performed, and this time it was P12-P13 in Figure 15.
As shown in the above steps A12 to /N5, fast-forward playback is performed beyond the end of the 6th song, which is one song before Hyakki song number "7", and in steps AI6 to AIB, the beginning of the 7th song is played. Fast-forward playback is performed up to the sound part, and P13 to P15 in Figure 15
As shown in L4, in steps AI9 to A210, old/reverse playback is performed to prevent the beginning of the song from being cut off. Then, similarly, the first
Steps A22 to A2 as shown in Figure 5 P14 to PL5
The target song number "7" of "5" is played back. In this case, during fast-forward playback of pt2 to PL3, the tape count values at the beginnings of the 5th to 7th songs are further set in the external RAM 5 by the voice/silence processing in step A14, and the tape count values at the beginnings of the songs are determined. The number of songs listed will be expanded to the seventh song. P15-P16> Next, in the same way, 0PU4 performs the step A26゜A described above.
27# Prepare to search for the 10th song, which is the song to be played in the program after A2 to A5, set the target song number to rlOJ, set the same t and p as above, and set the target song number to ``10J is the number of songs with known count values.'' Since it is larger than "7", fast-forward playback is necessary (Ste knob A2B), and since the current track number "8" of L is larger than the known count value r7J, fast-forward playback is performed from the current point to the target track number. (step ksqrA4o) o This (
Therefore, the fast-forward playback of steps A12 to A15 is performed to search for the beginning of the 1st O track, but the magnetic tape 8 does not contain the first track.
Since the 0th track does not exist and there are only up to the 8th track, the winding is wound to the end and the winding time counter 41-19 overflows (step A1), as shown in FIG.
5). Therefore, OP U' 4 is the current song number "9" at this time.
``8'', which is subtracted by 1 from ``8'', is set as the total number of songs in the internal R8M41 (step A43), and the total number of songs known 7 lag rN is set accordingly (step A44). After that, it is determined whether the number of the song to be played is less than the total number of songs [Step A4], and if it is larger, the playback of that song is not performed. Immediately L - preparation for the next song. I'm going to go in. In this case, during fast-forward playback from PL5 to P16, the tape count values at the beginnings of the 7th to 8th songs are set in the external RAM 5 by the voice/silence processing in x-step A14, and the tape count values at the beginnings of all songs on the magnetic tape 8 are set in the external RAM 5. The count value will be stored in memory, and from now on, the target track number can be searched based on this tape count value, and the playback head 9? There is no need to contact the tape running surface at all, and wear on the reproducing head 9 can be greatly reduced. (PL6 to P22) Thereafter, the program playback of the 6th and 8th songs, which are played 4th and 5th, is performed in exactly the same way, and the 1st
As shown in Figure 5 PL6 to P22, program playback is performed, and in step A3 it is determined that the 6th target song number is "0" and no songs to be played after that are specified, and the 5TOP signal is output. The program is output and the program playback ends. In addition, in the set of the total number of songs in step AAs r AA4 mentioned above, the target song number is not "10" but the total number of songs is "8".
If the number is 9, which is one more than ``9,'' then the 8th song is Menbori t-;
i) When the current song number is "
9", which matches : in the Jf-2 song, so step A12 r via AI6 to A18
, 8 and end 9;--The cutting is performed while it is detected. In addition, all 6 songs to be played in the program are sold) J
Well, after all 6 songs are played,
In step A27, it is determined that the song order counter 41-16 has reached r7J or more, and the 5TOP signal is output to end the program playback (step ka6).6Other Processes><Search by Backward Play> When it is determined in step A12 that the current song number is larger than the target song number and that rewinding is necessary, (!PU4 outputs the RIv Ew signal and starts rewinding.
perform the live recording (step A47), perform voice/silence processing,
(Step A48), this step A47 r A4B
This process is repeated until the current song number reaches the target song number, and the song to be played is checked. In this case, the voice/silence processing in step AAQ is also performed based on the flow shown in FIGS. 1, the voice/silence known flag is rOJ, and if it is unknown whether the current location is a voice area or a silent area, 0FU4 first detects the voice detection signal, but if it is high level, the voice presence 7 lag is jl.
J, if the level is Low, clear the 7 lags with sound and set the known 7 lags with sound and non-sound as rlJ (steps 12 to F
1s). Next, after going through step F1 again, if it is determined in the above-mentioned step F2 that it is in the rewind playback (RICV engineering
If the sound level 7 lag is not "1" in spite of the high level, it is determined that the sound part has entered from the silent part at the end of the song (step F16s F17), and the current track number is decremented by 1. Make sound 7 lag rlJ (step 718.
A19). From then on, step F 1 r is performed while the sound part is running.
72+ 716. The process of '17 is repeated and the system enters a standby state. Next, when entering the silent part from the sound part, the sound presence flag becomes "1" even though 0PU4 has sound and the detection signal is at Low level. r720), clears the sound 7 lag (step F21). Thereafter, while the vehicle is running during the silent portion, the processing at step IPII 721 IFj/x I'20 is returned and the vehicle enters a waiting state. In this way, even during rewind playback, step 1'1
The current song number is decremented from 6 to F21, and this decrement is performed at the end of each city's song as shown in Figure 16. Counting is performed at the same point as when incrementing, and there is no error between increment and decrement. This will be done to prevent this from happening. Rewinding to the beginning of the tape and fast forwarding to the end> The rewinding process described above was only performed halfway through the tape, but
When the tape is rewound to the beginning, the unwinding time counter 4'
1-19 becomes over 70- after a predetermined time (step C4), 0PU4 outputs the 5TOP signal to stop the tape running (step 05). and,
According to La at the beginning of the tape, set the current track number to rlJ (step 06), set the current track number known 7-lag (step 0
7), sound 7 lag is set to rOJ, 1st f sound no sound known 7 lag rtJ is set (step 06) 0 Also, if the above-mentioned fast forward process is performed not to the middle of the tape but to the end of the tape, the winding end time will be the same. Counter 41-
19 becomes over 7c7- after a predetermined time (step D4), in response to this, OFυ4 outputs a 5TOP signal to stop the tape running (step D5). <Normal playback process when the current track number is known> The above playback process was performed with the current location unknown due to fast forwarding and rewinding. Assuming that playback is performed without reversing, the current track number known flag is "1", so 0PU4 turns off the utterance/silence process and sets the time counter 41 so that the current track number is accurately maintained during playback. Continue until -19 is over 70- and the end of the tape is played (steps Ha, I).
n5). When the end of the tape is reached, the winding time counter 41-19 overflows after a predetermined time, and accordingly, OPυ4 outputs the 8TOF signal to stop the tape from running (step 6). In this embodiment, as shown in FIG. 15, Fil-P13, even if the tape count value of the beginning of each song is known only up to the point before the target song number, the tape count value is fast-forwarded to the known point, and from then on. Step A2 to play fast forward
8~A! Since the processing is performed at Io% A59 to A41, the contact between the tape running surface -\ of the playback head °9 can be further reduced. [Second Practical Example 4] FIG. 17 shows a second example. In this embodiment, an inaudible low-frequency signal is recorded between each track on the magnetic tape 8 as an index signal, and this index signal is transmitted via the playback head 9 and the playback ifra circuit 10. Is it an LP? A high-frequency reproduction signal is cut off by a (low-pass filter) 20 and supplied to 0PU4 through an index signal detection circuit 21. Therefore, in this embodiment, the discrimination between a sound part and a silent part is performed based on this index signal instead of the sound detection signal of the second embodiment. Moreover, the reproduction signal from the reproduction ifraiser circuit 10 is Hpy
The low frequency index signal is cut by a (bypass filter) 22, and the sound is emitted from a speaker 16 through a preamplifier 11 and a power amplifier 12. In the above embodiment, the tape count value at the beginning of each song is set sequentially during the playback of the program, selection playback, and sound/silence processing of program playback, but when one magnetic tape is loaded, The tape count value may be set by rewinding and reproducing all the songs in advance. Further, the information recorded on the magnetic tape is not limited to music, but may also be digital musical tone information, conversation, etc. Furthermore, the point at which the tape count value shown at t-61m is memorized is a point that is X minutes backward from the beginning of the song, but it may also be a point that is shifted forward.
I'4 in Figure 5. PIO, PI3, PI3°P21 performs a fast-forward playback instead of a rewind playback. [Effects of the Invention] As described above, one aspect of the present invention is to provide a storage means that associates the number of recording ranks of information with the amount of tape travel and sequentially arranges the number of recording ranks, and stores the number of recording ranks already stored in this storage means. When specified, the information is searched based on the corresponding tape running distance, so there is no need to touch the playback head to the tape running surface to inspect the tape, and the playback head In addition to preventing wear and tear, it also prevents scratches on the magnetic tape, resulting in better playback.In addition, since the magnetic tape does not come into contact with the playback surface during retrieval, the winding speed can be increased accordingly. This provides effects such as being able to search and select songs smoothly and in a shorter time.

[Brief Description of the Drawings] The drawings show an embodiment of the present invention, in which Fig. 1 is a circuit diagram of the entire device, Fig. 2 is a diagram showing the contents of the internal RAM, and Fig. 3 is a diagram showing the contents of the internal RAM.
The figure shows the contents of the external RAM.The fourth sentence is the magnetic tape 8.
Figures 5 to 5 show the instantaneous construction of a loading detection switch for detecting loading. Figure 8 shows 7 of the program playback process and song selection playback process.
0-chart diagram, Figure 9 shows tape count processing at 70
- Chart diagram, Figure 10 is a diagram of rewind processing (/+70- chart, Figure 11 is a diagram of 70-chart of fast-forward processing, Figure 12 is a diagram of 70-chart of playback process, Figure 13 is a diagram of 70-chart of rewind processing,
Figure 14 is a diagram showing a 70-chart of voice/silence processing, Figure 15 is a diagram showing a specific example of the tape running state according to the processing of Figures 6 to 14, and Figure 16 is the count timing of the current track number. FIG. 17 is a circuit diagram showing another embodiment. 4...oPu, 41...Internal RAM, 5...External RAM%6...Drive circuit, 7...Tape running field 8
. . . magnetic tape, 9 . . . playback head, 15 . . . sound/silence detection circuit, 17 .
18... Waveform shaping circuit, 19... Loading detection switch, 21... Index signal detection circuit. Patent applicant: Casio Keiki Co., Ltd. Figure 2 Figure 3 Figure 4 cA) (B) Figure 7 Figure 8 Figure 11 Figure 12 Figure 13

Claims (1)

[Claims] A tape running means for running a magnetic tape at a constant speed and high speed, a playback means for obtaining a playback signal of recorded information from the magnetic tape being run by the tape running means, and a tape that is added and subtracted according to the tape running direction. a traveling distance counting means; an information interval detection means for detecting information based on the reproduction signal from the reproduction means; and information on the magnetic tape by counting the information detection signals and adding and subtracting them according to the tape traveling direction. a recording rank counting means for counting the recording rank of the information, a recording rank number of information counted by the recording rank counting means according to the information inter-information detection signal, and a tape running amount counted by the tape running amount counting means. a storage means for sequentially storing the information in association with each other; and when an operation for specifying the number of recording ranks of desired information is performed, a tape running amount corresponding to the designated number of recording ranks is read from the storage means, and this readout is performed. 1. An automatic selection device for recorded information, comprising: control means for controlling the tape to run at high speed until the amount of tape travel is equal to the count value of the tape travel amount counting means.