JPS6249669B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape counter device such as a tape recorder, and more specifically, a scheduled tape count value is set and displayed by key operation of a number key, and an actual tape count value is set and displayed. This invention relates to a tape counter device such as a tape recorder that generates an output to control the tape recorder when the tape count value matches the set count value.

To explain the background behind the invention, conventional counter devices used in tape recorders and the like that have a memory function for counting contents are of mechanical type and electronic type.
The former mechanical type is equipped with two count display devices, one displays the actual tape count value, and the other displays the scheduled count value by mechanical dial operation. This device is equipped with a switch that operates only when a match is made, and when the contacts of this switch close, the mechanism of the tape recorder etc. is set to the desired operating state.In the latter electronic type, the actual tape counting section is electronic Although it is a mechanical type, the memory part for the planned count value is a mechanical type, and the value is set by operating the number setting dial etc. provided in this mechanical type memory part, and the count value displayed on this dial and the actual count value are calculated. When the two match, a matching output is generated to put the tape recorder into a predetermined operating state.

Next, the drawbacks of the conventional tape counter device will be explained in detail with reference to FIGS. 1 and 2. First, in FIG. The rotation from the reel stand etc. is transmitted via the belt.

When the tape recorder is put into operation such as playback, fast forwarding, rewinding, etc., the pulley 1a is rotated in proportion to the rotation of the reel stand, etc., and the counter 1 is operated by the worm gear 1b to mechanically control the rotation speed of the reel stand etc. Display numerical values.

Counter 2 allows you to set the numbers for the ones, tens, and hundreds individually. Switch 3 is turned ON only when the count values of both counter 1 and counter 2 match. When the switch 3 is turned on, the control circuit 12 is activated, and the tape recorder 13 is put into a stopped state or an automatic playback state.

If you want to stop the tape recorder or put it into automatic playback mode when counter 1 shows "345", set the 1's digit of counter 2 to "5", set the 10's digit to "4", and set the 100's digit to "3" in advance, and then if you fast forward or rewind the tape recorder 13, the value on counter 1 will increase or decrease until it reaches "345".
When this happens, the switch 3 is turned on, the control circuit 12 is activated, and the tape recorder 13 is stopped or automatically replayed. However, since the counters 1 and 2 are mechanical, there are concerns about durability and reliability, and setting the counts is very troublesome.

FIG. 2 shows an example using an electronic tape counter device, and its operation will be explained below. The counter section 4 includes a pulse generating circuit 4d, a counting circuit 4c, a decoder 4b, and a display device 4a. Further, this pulse generating circuit 4d is connected to a ring magnet 4d ₁ attached to the shaft of the pulley 4d ₂ .
and a Hall element _4d3 that detects changes _in the magnetic field of the ring magnet 4d1.The ring magnet _4d1 is rotated by the rotation of the pulley _4d2 to which the rotation of the reel stand of the tape recorder 13 is transmitted. By rotating, the Hall element _4d3 detects changes in the magnetic field and generates a group of pulse signals.

The pulse signal group generated by the pulse generating circuit 4d is counted in binary by the counting circuit 4c, and the counted number is displayed on the display device 4a through the decoder 4b.
Numerical values are displayed in base numbers. Therefore, when the tape recorder 13 is operated, as the ring magnet _4d1 rotates, a count proportional to the number of rotations is displayed on the display device 4a. The output of the counting circuit 4c of the counter section 4 is introduced into the coincidence detection circuit 7, while the mechanical counter 5, which can individually set numerical values in the ones place, tens place, and hundreds place, is sent to the coincidence detection circuit 7 through an encoder 6. It is connected.
Then, the output of the count circuit 4c and the encoder 6
When the outputs match in numerical content, the match detection circuit 7
A specific control signal is output to the control circuit 12 from
This control circuit 12 controls the tape recorder 13.
is controlled to a constant operating state. Specifically, when you insert a cassette into the tape recorder 13 and want the tape recorder 13 to automatically stop or play when the count reaches "345", set the 1's digit of the counter 5 to "5". If you set the tens digit to ``4'' and the 100 digit to ``3'' in advance, then turn the tape recorder 13 into fast forward or rewind mode and feed the tape at high speed, the ring magnet 4d ₁
rotates at high speed, so when the displayed number on the display device 4a reaches "345", the output of the count circuit 4c and the output of the encoder 6 match, and a control signal is output from the match detection circuit 7 to the control circuit 12. . Therefore, the tape recorder 13 is controlled by the control circuit 12, and the tape recorder 13 is brought to a stop or automatic playback state.

According to this method, since the counting of the tape recorder 13 is electronic, the above-mentioned durability and reliability are improved, but since the counter 5 to be set is mechanical, the above-mentioned drawbacks still cannot be eliminated.

Therefore, in the present invention, the above-mentioned drawbacks are solved by making both counters electronic, and an embodiment thereof will be explained with reference to FIG.

The configuration of the counter section 4 is similar to that described above, and includes a pulse generating circuit 4d, a counting circuit 4c, a decoder 4b, and a display device 4a. The pulley 4d ₂ and the ring magnet 4d ₁ are fixed on the same axis, and the pulley 4d ₂ is attached to the tape recorder 13.
As the pulley _4d2 rotates, the ring magnet _4d1
rotates, and the Hall element _4d3 detects the change in the magnetic field and generates a group of pulse signals.
The pulse signal group generated by the pulse generation circuit 4d is applied to a counting circuit 4c, and the output of the counting circuit 4c is applied to the decoder 4b via the coincidence detection circuit 7 and switch 10. The numeric key 8 is connected via an encoder 9 to a count circuit 4c and a memory circuit 11 via a switch 10, and the output of the memory circuit 11 is applied to the coincidence detection circuit 7. The coincidence detection circuit 7 outputs a control signal to the control circuit 12 when the contents of the memory circuit 11 and the count circuit 4c (when the numerical values match) match, and the tape recorder can be controlled by the output.

Now, to explain when the switch 10 is set to the a side, when a cassette is inserted into the tape recorder 13 and the playback mode is started, the rotation of the reel stand etc. is transmitted to the pulley 4d ₂ via the belt, and the ring magnet 4d ₁
The change in the magnetic field due to the rotation of is detected by the Hall element _4d3 , and the pulse signal group that is the detection output is added to the counting circuit 4c, and the count output is input to the decoder 4b in binary form through the switch 10, and is also inputted in decimal form. The rotation of the reel stand etc. is displayed numerically on the display device 4a. Therefore, the numerals on the display device 4a increase or decrease in accordance with the rotation of the ring magnet _4d1 .

At this time, if a certain number, for example "123" is entered using the number key 8, this content will be transferred to the count circuit 4.
As the ring magnet _4d1 is rotated, the number displayed on the display device 4a disappears and "123" is displayed instead. If the reset key is pressed in this state, the content "123" introduced above disappears from the count circuit 4c, and the current count due to the rotation of the ring magnet _4d1 is again output from the count circuit 4c and displayed on the display device 4a. be done. Further, after the above-mentioned "123" is introduced, if the setting key is pressed as it is, the count circuit 4c starts counting from the introduced content "123".

Next, when the switch 10 is set to the b side, the current number displayed on the display device 4a disappears, and the number set by the number key 8 is displayed. For example, if the current display is "234", when the switch 10 is set to the b side, "234" disappears and "000" is displayed on the display, and then the number keys 8 are used to display "3, 4, 5". ” is pressed, this “345” is added to the memory circuit 11 through the encoder 9, and the code corresponding to “345” is stored in the memory circuit 11, and at the same time, “345” is displayed on the display device 4a through the decoder 4b. is displayed. During this time, since the tape recorder 13 is operating, the count is progressing as the ring magnet _4d1 rotates, but the count continues due to the counting circuit 4c, and if the switch 10 is set to the a side, the subsequent count is started. For example, a number “246” is displayed. When the switch 10 is set to side B again, the previously memorized "345" will be displayed, allowing you to confirm the memorized number.

When the tape recorder 13 is fast-forwarded, the rotation of the reel stand etc. becomes faster, the tape is fed faster, the rotation of the pulley 4d ₂ becomes faster, the rotation of the ring magnet 4d ₁ also becomes faster, and the number of pulse signals generated also increases. Display device 4
The number a is also added at high speed. Display device 4a
When the display becomes "345" according to the count of the count circuit 4c, the output of the count circuit 4c and the output of the memory circuit 11 match, and the match detection circuit 7 outputs a control signal to the control circuit 12 at this time. The control circuit 12 can automatically stop the tape recorder 13 or put it into a playback state. Of course, the same operation can also be performed from the rewind or playback state. Further, although the switch 10 is shown as a mechanical switch in FIG. 3, it is of course possible to use an electronic switch, such as a transistor.

The present invention is constructed as described above, and since it is possible to set an arbitrary value in the count circuit using the numeric keys and have the count circuit perform a counting operation from that value, the user can memorize it even from the middle of the tape. You can count up or down from an easy number.

[Brief explanation of the drawing]

FIG. 1 shows a conventional mechanical tape counter device, FIG. 2 shows a conventional electronic tape counter device, and FIG. 3 shows an embodiment of the tape counter device according to the present invention. In the figure, 4: counter, 7: coincidence detection circuit,
8: Number key, 9: Encoder, 10: Changeover switch, 11: Memory circuit, 12: Control circuit.

Claims (1)

[Scope of Claims] 1. A counting circuit that counts the number of revolutions of a reel stand, etc., and a memory circuit that stores the contents of the number setting keys in a key group having at least a number setting key and a setting key; and a coincidence detection circuit that derives a coincidence output when the output value of the count circuit and the output value of the storage circuit match, and controls the operating state of a tape recorder or the like using the coincidence output, comprising: a display device that is provided in common to the circuit and the memory circuit and displays the output value of either of them; a first state that supplies the output value of the counting circuit to the display device; and a display device that displays the output value of the memory circuit; a first switch means capable of selectively switching between a second state for supplying information to the device; and a second state for supplying the content of the number inputted by the number entry key to the counting circuit and a second state for supplying the content to the memory circuit. and a second switch means that can selectively change the state, and when the first and second switch means are respectively in the first state, when the numeric key is operated, The content of the number is converted into a count value of the number of rotations of the reel stand and is supplied to the display device via the first switch means for display, and the number is counted from the content of the set number by operating the setting key in the group of keys. A tape counter device such as a tape recorder, characterized in that the count value is supplied to the display device and displayed on the display device.