JPH0255875B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is a tape recorder capable of reciprocating playback. The present invention relates to a magnetic recording/reproducing device equipped with an absolute number-number type random music selection device.

Conventional configuration and its problems In tape recorders that cannot perform round-trip playback,
Conventionally, when reproducing a plurality of programs recorded on a tape in an arbitrary order in an absolute numbering system, the system first performs rewinding, then uses a cue operation to detect unrecorded sections between programs, and counts the detection output. A comparison operation is made with the program number inputted first among a plurality of program numbers inputted by the operator in advance, and when a predetermined condition is satisfied, an output signal is generated, the state is switched to the playback state, and the playback of the program is started. When the program is finished, the second input program number and the current point are compared and calculated, and depending on the result, the state is switched to queue or review mode, and the non-recording section between programs is continued until the second input program number and predetermined conditions are satisfied. A so-called random music selection method is provided in which the program detects the program, switches to the playback state, and thereafter plays the desired programs in the desired order.

If this method is applied to a tape recorder capable of reciprocating playback, and if it is configured so that songs can be selected on both sides, it is possible to rewind the tape to the starting position once the song selection operation is started as described above. It is necessary to make an initial setting to select a song after that, but the big problem is whether to perform rewinding in the forward direction or in the reverse direction.

If this initial setting is fixed to a method that performs rewinding on the forward side, and the first program number to be played is the program number in the reverse direction, the reverse side must be rewound after the rewinding in the forward direction is completed. However, there is a drawback that it takes a very long time from the start of the music selection operation to the actual transition to playback.
Furthermore, if the rewinding is fixed to the reverse direction, the same drawback will occur for the normal rotation side program for the same reason. Furthermore, even if a switch is provided to select whether to rewind in the forward direction or in the reverse direction, the user would have to operate it each time before starting to select a song, which would be cumbersome for the user. . In addition, when specifying many programs, users may forget whether the first program number they specified is the forward or reverse side, and they may accidentally operate the forward or reverse side. It is conceivable that the operation of selecting music on both sides becomes extremely troublesome, and the originally very convenient function becomes inconvenient instead.

Purpose of the Invention The present invention is intended to eliminate the above-mentioned drawbacks, and is capable of automatically determining the rewinding direction for initial settings simply by memorizing and inputting a program number, and furthermore, while memorizing and inputting the program number, the rewinding direction is automatically determined. To provide a magnetic recording/reproducing device capable of starting rewinding and quickly selecting music.

Structure of the Invention The present invention includes a mechanism capable of reciprocating playback, a detection means for detecting an unrecorded portion of a recording tape during playback and fast forward/rewind, a counting means for counting the detection output, and a program number (address information) for selecting songs. )
an input means for inputting the address information, a specifying means for specifying whether the address information is in a forward rotation direction or a reverse rotation direction, a first storage means for storing the forward rotation side address information in the input order, and a first storage means for inputting the reverse rotation side address information. a second storage means for storing the address information in the order of rotation, a third storage means for storing whether the first input address information is designation for the forward rotation side or the reverse rotation side, a readout means for reading out the contents of the storage means; 1. Calculating means for sequentially reading the address information stored in the second storage means and comparing the information with the output of the counting means; and a calculating means for receiving the output of the calculating means, the output of the reading means, etc. A drive means that performs operations such as playback, fast forwarding, rewinding, stopping, forward rotation, and reversal allows the user to load a music tape, etc. into the tape recorder, and select the desired program number from the forward or reverse side. The contents of the third storage means are read out at the same time as the input starts while specifying , and if the specification is for the forward rotation side, the rewinding operation is performed on the forward rotation side, or if it is specified for the reverse rotation side, the rewinding operation is performed on the reverse side. The rewinding operation is configured so that the initial setting can be performed quickly.

DESCRIPTION OF THE EMBODIMENTS FIG. 1 is a block diagram showing an embodiment of the present invention. 1 is a no-signal detecting means that reproduces the signal recorded on the magnetic tape 10 with the playback head 9, and after amplification, a level detector distinguishes recorded sections from unrecorded sections based on the magnitude of the playback level, and detects no recording between programs. This is a general no-signal portion detection means for detecting the signal-free portion. Reference numeral 2 denotes a counting means for counting the number of outputs from the no-signal portion detecting means, and usually an integration counter is used. The output of the counting means is outputted to the calculating means 7 as required. 3 is an address information input means for inputting the desired program number using a switch (not shown), for example, 2,
Numbers 4, 8, etc. are input in order. 4 is a forward/reverse specifying means for specifying whether the program number is forward rotation side designation or reverse rotation side designation. Before inputting the program number with a switch etc. (not shown) Specify later.

Reference numeral 5 denotes a storage means consisting of first, second, and third storage means. For example, if the address information of No. 2, No. 4, and No. 4 in the previous example is specified for the forward rotation side, the first, second, and third storage means of the storage means 5 are stored.
are sequentially stored in the storage means. On the other hand, if it is a reverse side command, it is stored in the second storage means. The right/reverse designation information inputted first to the right/reverse designation unit 4 is input to the third storage means. Immediately upon inputting the right/reverse designation information, the reading means 6 outputs the right/reverse designation information from the third storage means to the calculation means 7.

The calculation means 7 calculates whether the forward/reverse designation information is the forward rotation side or the reverse rotation side. The mechanism driving means 8 is instructed to perform the rewinding operation. Upon receiving the command, the mechanism driving means 8 drives a mechanism (not shown) in accordance with the command. Note that when music selection is started by a music selection start means (not shown), the address information inputted first among the address information stored in the first or second storage means is determined by the information stored in the third storage means. It is read out by the reading means 6 and inputted to the calculating means 7. and calculation means 7
First, a command is issued to the mechanism driving means 8 to detect a non-signal portion recorded on the tape in a fast forward state (queue state). Then, the no-signal portion detecting means 1 sends a signal related to the no-signal portion to the counting means 2, and the counting means sends a value obtained by integrating the signal to the calculating means 7. The calculating means 7 compares and calculates the cumulatively counted value with the address information inputted from the reading means 6, and when both satisfy a predetermined relationship, it sends a reproduction command to the mechanism driving means 8 and puts the mechanism in a fast forward state ( (Queue state) to playback state. This series of operations makes it possible to reproduce the desired first program. When the first program ends and a no-signal section with the next recording section is detected, the address information input second to the same first or second storage means in which the first program information was stored is changed to the same one. According to the method, the music is inputted to the calculation means 7 and music is selected in the same manner, and the music selection is performed in the same manner thereafter.

FIG. 2 is a circuit diagram showing a specific configuration of this embodiment. Reference numeral 11 denotes a microcomputer, which includes a read-only memory (ROM) 17 that stores a series of programs, etc. for driving the mechanism in response to commands such as playback, recording, stop, forward rotation, reverse rotation, and start of music selection of the tape recorder. , no signal detection section 1
You can store counting data that counts the output of
The address information input from the address information input switch 12 and the address information input by the forward rotation side designation switch 13 and the reverse rotation side designation switch 14 which specify whether the address information is forward rotation side information or reverse rotation side information. Random access memory (RAM) 18 that temporarily stores correct/reverse information, etc., and ROM 1 as necessary.
7 and RAM 18, determines the relationship between the two, and determines how to drive the mechanism of the tape recorder (not shown) based on the result, an input section 16, and an output section 20.
It is equivalently composed of.

Reference numeral 8 denotes a mechanism drive circuit for driving a mechanism of a tape recorder (not shown) using the output 20a of the microcomputer 11.

A music selection start switch 15 is used to actually start music selection, and is operated after address information is input by the address information input switch 12. Note that this switch can also be replaced with a normal playback command switch.

Figure 3 shows the microcomputer 11 of this embodiment.
This is a flowchart of the main parts to explain the operation.

Second section regarding the operation of this embodiment with the above configuration.
This will be explained in detail below with figures. Address information is input by pressing the switch assigned the same number as the program number among the address information input switches 12. In FIG. 2, only 9 switches are provided due to space constraints, so only up to 9 types of programs can be specified, but it is obvious that the number can be increased further.

When a certain number of address information input switches 12 is pressed, the information (address information) unique to that switch is first stored in the RAM 18, and then if this number is the one that was applied to the forward rotation side program. , the forward rotation side designation switch 13 is pressed, and if it is for a reverse rotation side program, the reverse rotation side designation switch 14 is pressed. When this operation is completed, the information on which switch was pressed, whether forward or reverse, is stored in the RAM.
It is stored at 18 specific addresses. Alternatively, a flag of a certain register in the arithmetic unit 19 may be specified.

Then, the arithmetic unit 19 refers to the forward/reverse designation information stored at a specific address of the RAM 18 or the flag, and sets the address information stored in the RAM 18 to a pre-prepared forward side address of the RAM 18 if the address information is on the forward side. If it is inversion side information, it is stored in the inversion side address information storage address.

Note that the input of the forward/reverse designation information may be performed prior to the address information; in this case, as soon as the input of the address designation information is completed, it is immediately stored in the forward or reverse address information storage address of the RAM 18. , configure the program for the microcomputer.

At the same time, the forward/reverse designation information stored in a specific address of the RAM 18 or the flag contents of a register in the arithmetic unit 19 is read out, and the arithmetic unit determines whether it is normal rotation side information or inverted side information. The output 20a is outputted to the mechanism drive circuit so that if the information is on the forward side, the mechanism performs the rewinding operation on the forward side, and if the information is on the reverse side, the rewinding operation is performed on the reverse side. performs rewind.

The second and subsequent address information are input in the same manner during the rewinding operation or after the rewinding operation is completed, and the address information is stored in each address storage address of the RAM 18 in the order in which it is input. .

When the input of the address information is completed and the music selection start switch 15 is operated, music selection starts, and the operation is performed as explained in the block diagram of the figure.

FIG. 3 is a flowchart of a microcomputer program for operating the above-mentioned main parts. When the first address information is input in step 21, it is stored in the RAM for the time being in step 22. Next, in step 23, when the forward/reverse designation information is input, it is determined in step 24 whether it is the forward rotation side or the reverse rotation side. If it is on the forward rotation side, a forward rotation side rewind command is output in step 25 and then in step 22.
In step 27, the address information stored in the RAM is stored again in the normal rotation side RAM. If it is on the reverse side, a reverse side rewind command is output in step 26, and similarly, the address information stored in the RAM in step 22 is stored again in the reverse side RAM in step 28.

In step 29, the second address information is input, and in step 30, it is temporarily stored in the RAM as described above.Next, when the forward/reverse designation information is input in step 31, in step 32, it is determined whether the information is on the forward or reverse side. If it is the forward rotation side, the process returns to step 27, and if it is the reverse rotation side, the process returns to step 28. Although not shown in FIG. 3, step 29
Before this, there is a step for determining whether or not a music selection start switch has been pressed, and when the music selection start switch has been pressed, a transition is made to a music selection program (not shown).

As described above, according to this embodiment, the initialization of absolute address-style random music selection on both the forward and reverse sides is performed by inputting whether the initial program number (address information) is designated as the forward or reverse side. Immediately after, when specifying the forward rotation side, it is done by rewinding the forward rotation side, and when specifying the reverse rotation side, it is executed by rewinding the reverse side, so while inputting the subsequent program number. Rewind is executed, and it is possible to start selecting songs immediately after entering the program number.
It becomes possible to significantly improve operability.

Effects of the Invention The present invention provides a system for performing random selection of songs on the forward and reverse sides using a no-signal detection method by immediately determining whether the first input program number specifies forward rotation or reverse rotation. To provide a magnetic recording and reproducing device equipped with an excellent music selection device that can significantly shorten the time required to proceed to the actual music selection operation because initialization by rewinding can be performed on the side that is to be played for the first time while inputting a program number. It is possible.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the magnetic recording/reproducing apparatus of the present invention. FIG. 2 is a circuit diagram showing a specific configuration, and FIG. 3 is a flowchart of main parts for explaining the operation. DESCRIPTION OF SYMBOLS 1... No-signal part detection means, 3... Address information input means, 4... Direct/reverse specification means, 5... Storage means, 6
. . . reading means, 7 . . . calculation means, 8 . . . mechanism driving means.

Claims (1)

[Claims] 1. A mechanism capable of reciprocating playback, a detection means for detecting unrecorded portions of a magnetic tape during playback, fast forwarding, and rewinding, a counting means for counting the output of the detection means, and a plurality of programs recorded on the magnetic tape. an input means for sequentially inputting address information in order to play any plurality of programs in an arbitrary order; a designating means for specifying whether the address information is on the forward side or the reverse side; and forward side address information. a first storage means for storing the reverse side address information in the order in which it was input; a second storage means for storing the reverse side address information in the order in which it was input;
a third storage means for storing whether the first inputted address information is designated as a forward rotation side or a reverse rotation side; a reading means for reading out the contents of the storage means; a calculation means for sequentially reading out the address information and comparing the information with the output of the counting means; A driving means for performing operations such as forward rotation and reverse rotation causes the readout means to read out the contents of the third storage means immediately when the designation means is operated, and the output of the readout means is set to the normal rotation side designation. A magnetic recording/reproducing apparatus characterized in that the driving means is configured to cause the mechanism to perform rewinding on the forward side when the reverse side is specified, and to perform rewinding on the reverse side when the reverse side is designated.