JPH0245272B2 - JIKIKIROKUSAISEISOCHI - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic recording and reproducing device, and its purpose is to digitally display the tape running position and to display the tape within a zone either before or after a specific position relative to the tape length. The purpose is to display whether a running position exists.

More and more recent magnetic recording/reproducing devices are equipped with a repeat playback function. These devices use, for example, the tape position where the counter becomes zero (hereinafter referred to as the specific position) as a reference, from the beginning of tape winding to a specific position (hereinafter referred to as the first zone), or between the specific position and the end of tape winding ( 2nd below
(referred to as a zone) is being played repeatedly (referred to as a repeat playback function). In this case, it is not possible to determine which zone is being repeatedly played based on the length of the tape by simply checking the counter value, and there is a drawback that it is not possible to set and confirm repeat playback operations with certainty. .

The present invention improves the above-mentioned drawbacks, and one embodiment thereof will be described below with reference to the drawings. First, it is assumed that the entire apparatus (not shown) is in a repeat playback state. The present invention is comprised of a rotation detection means 1, a counting means 2, a first display means 3, a first zone detection means 4, a second zone detection means 5, and a second display means 6.

The rotation detecting means 1 is composed of a magnet 101 and a Hall element 102, and the magnet 101 is assumed to rotate in response to the rotation of a supply reel shaft or a take-up reel shaft (not shown). Therefore, the Hall element 102 generates an output pulse corresponding to the amount of tape travel.

The counting means 2 is composed of a combination of a plurality of flip-flop circuits and logic circuits, and calculates the output pulses of the rotation detecting means 1. Addition operations are performed when the device is in playback or fast-forward mode, subtraction operations are performed when the device is in rewind mode, and it is also possible to optionally reset the count from the outside (for example, to set the count to zero). Note that if the calculated value exceeds "999", it becomes "000". Also, “000”
When subtracted from , it becomes “999”, “998”, etc.

The first display means 3 is a display means such as a light emitting diode, a liquid crystal display, or a fluorescent display tube, and is driven by the counting means 2 to display the tape running position in digital numbers.

The second zone detection means 5 includes a comparator 501 and an electronic switch 502, which are constructed from a combination of a plurality of logic circuits. The comparator 501 compares the output of the first reference signal generation circuit 406 (which generates an output corresponding to the state of "000") and the output 201 of the counting means 2, and generates an output when the calculated value of the counting means 2 is large. do. For example, the first reference signal generating means 40
6 is in the state of "000", and if the calculated value of the counting means is "001" or more, that is, if the first display means 3 is "001" or more, an output is generated.
An electronic switch 502 is controlled by a flip-flop circuit 407 (described later) to transmit or disconnect the output of the comparator 501 to the flip-flop circuit, and when this output is generated, the tape running position is at the tape length. On the other hand, it exists between the specific position and the end of the roll.

The first zone detection means 4 includes a first coincidence circuit 40
4. Second coincidence circuit 401, first reference signal generation circuit 406, second reference signal generation circuit 402 (for example, generates an output corresponding to the calculated value "999" of counting means 2), flip-flop circuit 407
It consists of In addition, the first matching circuit 40
4 and the second matching circuit 401 are each composed of a plurality of logic circuits, and the first matching circuit 4
04 generates an output when the calculated value of the counting means 2 matches the value of the first reference signal generating circuit 406, that is, when it is "000", and drives the flip-flop circuit 407 to the reset state. Further, the second matching circuit 401 generates an output when the calculated value of the counting means 2 matches the value of the second reference signal generating circuit 402, that is, "999", and drives the flip-flop circuit 407 to the set state. Flip-flop circuit 407 generates an output when driven by second coincidence circuit 401, and drives flip-flop circuit 601, which will be described later, and electronic switch 502, which will be described above. Therefore, the first zone detection means 4 detects that the tape running position is a specific position (the position where the calculated value of the counting means 2 corresponds to "000").
When the state exceeds "999", an output is generated, and it is detected that there is a tape running position between the first zone and the tape length from the beginning of tape winding to a specific position. It functions to cut off the output of the two-zone detection means 5.

The second display means 6 is a flip-flop circuit 60.
1. Light emitting diodes 602 and 603, a first zone display mark 605 and a second zone display mark adjacent thereto.
It is composed of zone display marks 604. When the flip-flop circuit 601 is driven by a positive voltage from the second zone detection means 5, it drives the light emitting diode 602 to turn on, and when it is driven by a positive voltage from the first zone detection means 4, it turns on the light emitting diode 602. Drive. The light emitting diode 602 illuminates the second zone display mark 604, and the light emitting diode 6
03 illuminates the first zone display mark 605.
The right end of the first zone display mark 605 corresponds to the beginning of tape winding, and "000" corresponds to a specific tape position. The right end of the second zone display mark 604 corresponds to the tape specific position "000", and the left end corresponds to the end of the tape winding.

Next, the operation will be explained. It is assumed that the apparatus sets the counting means 2 to zero at a specific position with respect to the length of the tape, and is repeatedly reproducing the second zone. When the tape running position is within the second zone relative to the tape length, the comparator circuit 50
1 is the value “000” of the first reference signal generation circuit 406
Since the calculated value of the counting means 2 is larger than the above, an output is generated and the flip-flop circuit 601 is driven via the electronic switch 502. The light emitting diode 602 is then driven to illuminate the second zone display mark 604. When the end of the tape is reached during playback, the device automatically moves to rewinding operation, and when it reaches a specific position "000", it automatically moves to playback. Therefore, when the tape running position is within the second zone, the light emitting diode 602 is turned on, illuminating the second zone display mark 604, and informing the user that the tape running position is within the second zone. Inform.

Next, a case will be described in which the tape running position is moved into the first zone by manually rewinding the device. When rewinding exceeds the specific position "000", the first coincidence circuit 404 generates an output at that moment, and the flip-flop 407 is reset by the rising waveform of the output voltage. Furthermore, when the tape running position reaches "999", that is, the calculated value of the counting means 2 is transferred to the second reference signal generating means 402.
When the second matching circuit 4 matches the “999” state of
01 produces an output, and its rising voltage also drives flip-flop circuit 407 to the set state. Flip-flop circuit 407 generates an output that controls electronic switch 502 to the off state and drives flip-flop circuit 601 to the reset state. As a result, the light emitting diode 60
3 is driven to turn on, and the first zone display mark 605 is thereby illuminated. Then, the user is informed that the tape running position has entered the first zone. When repeat reproduction is performed in this first zone, the device continuously and repeatedly reproduces the area from the beginning of tape winding to the specific position "000". Then, the light emitting diode 603 is turned on, and the first zone display mark 605 is illuminated as described above.

As described above, it is possible to visually and easily display to the user whether the tape running position is within the first zone or within the second zone with respect to the tape specific position "000". This allows the user to reliably select and set the repeat playback operation for the signal or music he or she wants to listen to. That is, resetting the counting means 2 (setting the 000 state) becomes easy.

In the embodiment of the present invention, the counting means 2, the first zone detecting means 4, the second zone detecting means 5, etc. are described as independent blocks, but the same operations and functions can be obtained using a microcomputer (not shown). It is also possible. In addition, the first display means 3
It is also possible to configure the and second display means 6 integrally, and it is also possible to combine the light emitting diodes 602 and 603 with the first display means 3. Furthermore, in the repeat playback operation, either light emitting diode 602 or 603 lights up in the playback state, and during fast forwarding or rewinding, a separately provided light emitting diode (not shown) turns on the light emitting diode 60.
2 or 603, it is possible to make the display blink. In addition, it is also possible as an application development to provide a large number of detection means for each zone, repeatedly reproduce only a specific song, and display the display on the second display means.

As described above, according to the magnetic recording and reproducing apparatus of the present invention, the output of the counting means is calculated by the first zone detecting means and the second zone detecting means, and the output of the counting means is calculated by the first zone detecting means and the second zone detecting means. zone and a second zone from the specific position to the end of the roll, and the second display means indicates that the tape running position is in the first zone or the second zone by displaying the first zone display mark and the second zone adjacent to each other. Since the tape running position is displayed on the zone display mark, the tape running position can be displayed visually and easily, and a specific position during repeat operation can be easily set, which is an excellent effect. Further, it has the effect that the zone during the repeat operation becomes clear.

[Brief explanation of the drawing]

The drawing is a block circuit diagram showing one embodiment of the present invention. 1... Rotation detection means, 2... Counting means, 4
...First zone detection means, 5...Second zone detection means, 6...Second display means, 3...First display means.

Claims (1)

[Claims] 1. A rotation detecting means that generates a pulse signal in response to the rotation of the reel shaft, a counting means that calculates the output of the rotation detecting means and generates an output corresponding to the tape running position, and a digital converter that outputs the output of the counting means. a first display means for displaying a display, a first zone detection means for calculating the output of the counting means and detecting that the tape running position exists between the beginning of tape winding and a specific position; a second zone detecting means for calculating the output and detecting that the tape running position exists between a specific position on the tape and the end of the tape, and a second zone detecting means driven by the first zone detecting means and the second zone detecting means. Magnetic recording comprising a second display means consisting of a first zone display mark and a second zone display mark adjacent to each other for indicating that the tape running position is in one of the zones with respect to the tape length. playback device.