JPS59116977A - Music selecting method - Google Patents

Abstract

PURPOSE:To make a present music selection number coincide with a display by a simple operation without requiring a rewinding operation by putting an intrinsic discriminating number (name) to a cassette tape to discriminate it, and storing the present music selection number of the cassette tape concerned in a memory to read out the present music selection number concerned from the memory when loading to a deck, and display said number. CONSTITUTION:A cassette tape on the market sound recording plural pieces of music is loaded to a deck, also the discriminating number (for instance ''15'') of the cassette tape concerned is inputted from a ten-key, and therefore, an entry key 109b is depressed. The discriminating number ''15'' is read by a processing device 107a immediately. Thus, the processing device 107a sets a present music program number Ma under music selection to a reversible counter 112 from the storage area of an RAM 107c corresponding to the tape discriminating number ''15'', and displays it on a display part 116. Also, for instance, when the fifth music program from the head is reproduced until its middle part previously, and thereafter, the cassette tape is removed from the deck, Ma (=5) is set to the reversible counter 112 by inputting the tape discriminating number ''15'', and displayed on the display part 116.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a music selection method, and more particularly to a music selection method in which a music position (music number) f from the beginning is input in a cassette tape recorder or a karaoke apparatus.

Generally, to select a desired song on a cassette tape recorder or karaoke machine, input information about the number of songs before and after the currently selected song (suppose it is the 11th song) and run the tape, so that there is no recording between songs. When the counted value matches the input n or (nz), tape running is stopped and a song is selected. However, with this method, it is necessary to be able to recognize the currently selected song, and the number of songs between the desired song and the currently selected song must be calculated, making the operation cumbersome. Met. Another method for selecting songs is to rewind the cassette tape, then enter the track number from the beginning, run the tape, detect and count unrecorded sections between songs while the tape is running, and
There is a method of stopping tape running and selecting a song when the counted value matches the song selection number.

However, this method has the disadvantage that it is necessary to rewind the cassette tape, making it difficult to select the desired music.

From the above, it is an object of the present invention to provide a novel music selection method that does not require rewinding the tape and can select a desired music simply by inputting a music number.

Hereinafter, a case in which the present invention is applied to a cassette tape recorder will be described in detail with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is an explanatory diagram of stored contents, and FIG. 6 is a block diagram of an unrecorded portion detection circuit.

In FIG. 1, 101 is a motor that drives a reel or capstan (not shown), and 102 is attached to the reel, capstan, or motor, and the reel, motor, or capstan (in the embodiment, the motor that drives the capstan) rotates by a predetermined amount. a pulse generator that generates two-phase pulses Pa and Pb having a phase difference of 90° each time
10 is a rotation direction determination circuit that monitors the phases of two-phase pulses Pa and Pb to determine the rotation direction, and if the phase of pulse Pa is 90 degrees ahead of the phase of pulse PB, the circuit rotates in the normal direction. If the phase of the pulse Pa is delayed by 90 degrees from the phase of the pulse pb, a negative pulse -P is generated, assuming that the phase is reversed. Reference numeral 104 denotes a reversible counter, which counts up the plus pulse +P generated every predetermined rotation in the positive direction, counts down the minus pulse -P generated every predetermined rotation in the negative direction, and stores the tape running position.

105 is a display section that displays the tape running position of the reversible counter 104, and 106 is a display drive circuit. 107 is a microcomputer, a processing device ft107a,
It has a control program memory 107b for storing control programs and a RAM (random access memory) 1070. For example, as shown in FIG. 2, the RAM 107C has storage areas corresponding to tape identification numbers 01 to 99 that identify each man's set tape, and each storage area stores the music currently selected on the corresponding cassette tape. The track number of the song (referred to as the current track number) is stored. That is, in the present invention, each cassette tape is given a tape name, such as a tape identification number, and the program number of the currently selected song is stored in the storage area of the cassette tape having the core tape identification number.

108 is a non-volatile memory that copies the contents of the RAM 107C and retains the stored contents even if the power is turned off;
Bubble memory or rewritable EEROM (Elec
Constructed by tric Erasable I (OM). In addition, RAMI O7C is connected to battery backup R.
It is also possible to use an AM configuration and omit the non-volatile memory.

Reference numeral 109 denotes an operation panel, which includes a numeric keypad 109a for inputting the identification number of the cassette tape loaded in the tape deck and a desired track number, and a tape identification number entry key 1.
09b, a music selection start button 109c, and the like.

A reproducing unit 110 amplifies and outputs a reproduced signal detected by a reproducing head (not shown). Reference numeral 111 denotes an unrecorded portion detection unit which outputs an unrecorded portion detection signal when a predetermined length of unrecorded portion is detected. The unrecorded portion detecting section 111 determines the level of the reproduced signal as shown in FIG. 6, and outputs the unrecorded signal NR8 (-"i") when the level is below a predetermined level, and "0" when it is above a predetermined level. In other words, when the level detector 111a that outputs the level detector 111a, the not gate 111b, the flip-flop 111c that is reset by the no-recording signal NR8, and the flip-flop 111c are centered, a no-recorded portion is detected. Time rotation direction determination circuit 1
AND gate 111d that passes the positive pulse +P and negative pulse -P output from 06, and OR gate 111
e, a counter 111f that counts the output pulses of the AND gate 111d and whose count value is cleared to zero when the flip-flop 111c is reset, and a counter 111f that counts the output pulses of the AND gate 111d, and a value Np corresponding to a predetermined tape length that is preset. determines the magnitude of the preset register 111g, the divisor value Nc of the counter 111f, and the preset value Np,
Comparator 1 outputs a non-recorded portion detection signal NRD when Np≦Nc
11h, a flip-flop that is set by the positive pulse +P and reset by the negative pulse -P, in other words, a flip-flop 1111 that is set when the rotation is in the forward direction and reset when the rotation is in the reverse direction; (When the flip-flop 1111 is set) The non-recorded portion detection signal NRD is counted up (Anto-game that outputs as pulse Pu) 111
j, and an ant game that outputs the bulk recording portion detection signal NRD as the countdown pulse Pd when it is reversed (when the flip-flop 1111 is reset)
111k. 112 is an unrecorded portion detection unit 1
The count-up pulse Pu output from 11 is counted up, and the count-down pulse Pd is counted down to calculate the number of unrecorded parts from the beginning of the cassette tape, in other words, the number of the currently selected song (the current number). 11 is a reversible counter for storing the program number (Ma); 11 is a register in which the desired program number Mt inputted from the numeric keypad 109a on the operation channel 109 is set via the microcomputer 107; and 114' is a register from the processing unit 07&. A comparator that determines the magnitude of the current program number Ma and desired program number IV1.t using the output comparison enable signal (EBL); 115 is a motor control circuit that drives the motor 1 [11; IVIS
When T occurs, the motor is rotated forward or reverse according to 1'' or 0'' of the comparison signal CR8 output from the comparator 114, and the motor is rotated in the forward or reverse direction according to the coincidence signal CIN output from the comparator 114. Stop rotation. 116 is a display section that displays the contents of the reversible counter 112, that is, the current music selection number.

Next, the present invention will be explained in detail. Insert a commercially available cassette tape on which multiple songs have been recorded into the deck, and use the numeric keypad to enter the identification number of the cassette tape (for example °'
15''), then press the entry key 1.
・Press 9b. When the entry key 109b is pressed, the identification number "15", which has already been input from the numeric keypad and set in an input register (not shown), is immediately read by the processing device 107a. As a result, the processing device 107a sets the current track number location currently selected from the storage area of the RAM 107 (!) corresponding to the tape identification number "15'" on the reversible counter 112, and
116. Note that when playing a song recorded on a cassette tape with tape identification number "15" for the first time from the beginning), the content of the storage area corresponding to tape identification number "15" of tAM107e is zero (lVla=0).
). Therefore, when playing for the first time, if zero is not displayed on the display part 1, it is necessary to press the reset button (not shown) to clear the contents of the reversible counter 112 to zero. Also, for example, if you previously played the 5th track from the beginning and then removed the cassette tape from the deck, the current track number "5"' is stored in the storage area, and the tape identification number ° 15”, Ma (=5) is set in the reversible counter 112 and displayed on the display unit 116.

Now, with Ma (=5) set in the reversible counter, assume that the 8th song is played as soon as it is played (M
t=8). 8" from numeric keypad 109b
, and then press the music selection start button 109C. The music selection start button 109C is immediately suppressed by the processing device 107a.
The desired music selection number Mt (=s) detected by the processor 10 and set in an input register (not shown) is
7a and set in the register 113. Next, the processing device 107a outputs a comparison enable signal CEBL to the comparator 114, and outputs a motor start signal MST to the motor drive circuit 115. Comparator 11
4 is the current song number Ma (=5) and the desired song selection number Mt (=
8), and if Mt > Ma, a comparison signal CR8 of logic 1" is generated; if Ivy<Ma, a comparison signal CBS of logic 0" is generated; and if Mt=Ma, a match signal is generated. Output each CIN. Motor drive circuit 11
5 rotates the motor 101 in the forward or reverse direction depending on the magnitudes of Ma and Mt when the motor start signal MST and the comparison signal CR8 are input. Now, since IVL t >'M a, the motor drive circuit 115 rotates the motor 101 in the forward direction.

As a result, the tape runs in the forward direction, and the rotation direction determination circuit 103 outputs a plus pulse + of a frequency corresponding to the moving speed.
P is generated. On the other hand, a reproduction signal from the reproduction section 110 is input to the unrecorded portion detection circuit 111. When the unrecorded portion detection circuit 111 detects a predetermined length of unrecorded portion, it outputs a count-up pulse Pu. As a result, the reversible counter 112 increments the current song number Ma by one. Thereafter, when the tape runs and -C, Ma- = 3, Ma and Mt match and the comparison section 114 outputs a match signal CIN, and the Tanabata drive circuit 115 stops the rotation of the motor 102. The cassette tape is positioned at the desired track number position.

On the other hand, in the case of M a ) M t , the motor drive circuit 11
5 selects music while rotating the motor 102 in reverse. Furthermore,)/I
It is also possible to start the reproduction without stopping when it reaches a-Mt.

When the song selection is completed, or even during song selection, the current song number Ma stored in the reversible counter 112 is read at every predetermined sampling time by the processing device 107a, and the R
It is stored in the storage area corresponding to the tape identification number "15" of AM107C, and the current song selection number Ma is always stored in RAM10.
Maintained at 7C.

After completing the song selection, press the play button (not shown) on the operation panel 109 to play the normal cassette 1. /) The tape is fed and played back in the same way as with a tape recorder. After that, every time an unrecorded portion of a predetermined length or more is detected, a count up pulse Pu or a count down pulse l) d is generated from the unrecorded portion detection circuit 111 depending on the direction of movement.
The reversible counter 112 counts up the count-up pulse Pui or down-counts Pd to update the current program number LVIa, and at the same time, the current program number Ma is stored in the RAM 107C. Thereafter, by similar control, the current program number Ma is always stored in the storage area of the RAM 107C corresponding to the reversible counter 112 and the cassette tape mounted on the deck.

Even if the cassette tape is ejected in this state, the current track number of the ejected tape identification number II 15PI is saved in the storage area corresponding to the tape identification number "'15". Note that when the deck is in a stopped state, the processing device 10
7a copies the entire contents of RAMID 7 (!) to the non-volatile memory 108, but at a predetermined short cycle
If the contents of 107(!) are copied to the non-volatile memory 108, the latest stored contents will not be lost due to a power outage or power cut.

Thereafter, similar operations are performed for other tapes, and their current track numbers are stored in the RAM 107C and nonvolatile memory 108.

Now, when you turn on the power to use the cassette tape recorder at a later date, the processing unit 107a will be transferred to the non-volatile memory 108.
The saved information is restored to the RAM 107C. In this state, set the cassette tape with tape identification number "15" on the deck, and press numeric keypad 109a, 9".
15", then end key 109b
If you press , the processing device 107a will be RAMI 07c
The current track number Ma is read from the storage area corresponding to the tape identification number "15" and set in the reversible counter 112.
The current track number set to 12 will be displayed and will be played from now on.
If an unrecorded portion of a predetermined length or more is detected as the tape runs through fast-forwarding, rewinding, or song selection operations, the J-adism counter 112 updates the current song selection number by counting up or down depending on the direction in which the tape is running. However, the current music selection number is stored in the storage area of the RAM 107c with the tape identification number "15".

As described above, according to the present invention, a unique identification number (name) is attached to a cassette tape to distinguish it, the current song selection number of the cassette tape is stored in the memory, and the current song selection number is read out from the memory when the deck is installed. Since I set it to display,
The current music selection number and the display can be made to match with a simple operation without requiring a rewind operation. Further, according to the present invention, since the currently selected song number can be woven, it is possible to easily select a song in a short time simply by inputting the song number of the song to be selected.

Furthermore, since songs can be selected in a short time, a large number of songs can be recorded on cassette tapes used in karaoke machines.

In addition, the tape identification number was entered to identify the cassette tape installed on the deck, but this is not always the case, and the tape identification number is attached to the cassette tape. This may be identified using a sensor. Furthermore, although the case has been described in which the no-recording detection signal is output when an unrecorded portion of a predetermined tape length is detected, it may be output when an unrecorded portion of a predetermined time is detected.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is an explanatory diagram of stored contents, and FIG. 3 is a block diagram of an unrecorded portion detection circuit. 1 (N...Motor, 102...Pulse generator, 103...Rotation direction determination circuit, 104
...Reversible counter, 105...Display section, 106...Display drive circuit, 107...
・Microcomputer, 10B...Non-volatile memory, 109...Operation panel, 109a...
...Numeric keypad, 109b...Number entry key for each tape Da, 109c...Song selection start button, 110...Playback section, 111...None Recording portion detection unit, 112...Reversible counter, 1
16...Register, 114...Comparator,
115...Motor control circuit, 116...
Display section patent applicant Senki Saito

Claims (1)

[Scope of Claim] A cassette tape recorder or karaoke device that has a playback section that plays back recorded audio and an unrecorded portion detection section that monitors the playback output and detects unrecorded portions of a predetermined length or longer than a predetermined time. In the song selection method, a storage area for storing a track number corresponding to a stop or running position of a plurality of cassette tapes corresponding to each of the plurality of cassette tapes, and an input means for inputting a name of a monument given to the cassette tape; an identification means for identifying a unique name given to a cassette tape, and the input means or identification means identifies the cassette tape loaded on the deck, and the track number when the cassette tape is stopped is stored in the storage area. When the unrecorded portion detecting section detects an unrecorded portion while the tape is running, the program number is counted up or down depending on the tape running direction to grasp the current program number, and when selecting a desired song. This song selection method is characterized by inputting a song number, running a cassette tape, and completing the song selection when the current song number matches the desired song number. (2) The music selection method according to claim 11, characterized in that the tape running direction is determined depending on the size of the current music number and the desired music number.