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JPS55127485

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DESCRIPTION JPS55127485
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a circuit diagram showing an internal circuit of
a microphone device as one side of the present invention, and FIG. 2 is a combination plug 27
and a tape recorder 30 from the microphone device of FIG. FIG. 3 is a block circuit diagram
showing the main part of another embodiment of the present invention. 1.2 ...... microphone
output terminal, 3 ...... microphone unit, 6 ...... cue signal oscillator for generating. 16 ...... timer
circuit, 17,26.41 ...... Kieni signal recording switch. Figure 2 Figure 3
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a microphone
device used in connection with a tape recorder, and in particular, it is possible to generate a cue
signal for clarifying the location of recorded content recorded on a magnetic tape. The present
invention relates to a microphone device. The cue signal used to clarify the location of the
recorded content recorded on such magnetic tape is a sound signal of a frequency lower than the
audible frequency (1) / 27 dry t-wave band, and is usually determined normally. In high-speed
playback, it does not feel as a sound to the human ear, but when the tape is run at high speed
and played back as in the quo mote and review mode, all general allocation details are high pitch
or more In this case, the cue signal is reproduced alone, or the middle or low range sound is
reproduced, so that it can be easily confirmed. Conventionally, a low frequency oscillator for
generating the above-mentioned cue signal is provided on the tape recorder side, the oscillator is
driven to oscillate 1 according to the operation of the cue signal recording button, and the cue is
generated on the magnetic tape. A quadruple is used to record the 1 ?. Therefore, when it is
desired to perform such Cu-1 J recording, a cue signal recording '9 Hf (a tape recorder with a
attached tape recorder must be prepared or rolled-in, and a general tape without such a
capability) It is uneconomical if you already own the recorder. In addition, since the cue signal
recording button is disposed on the operation unit of the tape recorder or the like, it is
inconvenient and inconvenient when the microphone is connected to perform the mouth (2)
speed recording and the like. This consideration is made to eliminate such conventional defects,
01-05-2019
1
and the microphone device side is provided with an oscillator of the earth pressure cue signal,
and the above-mentioned is performed according to the depth of the switch provided in the
microphone device. By providing the microphone if such that the cue signal is sent to the signal
line of the microphone, the cue signal can be recorded simply by connecting the microphone
device to a tape recorder having no general cue signal recording function. It is an object of the
present invention to easily expand the function of a conventional tape recorder and to improve
the operability when dictating while waiting for the microphone device by hand. Hereinafter,
preferred embodiments according to the present invention will be described with reference to the
drawings. FIG. 1 is a circuit diagram showing an internal circuit of a microphone device as one
embodiment of the present invention, and outputs microphone signals obtained by converting an
audio signal to an electrical signal at microphone output terminals 1 and 2 The microphone unit
3 is connected 6c.
Further, an oscillator 6 is connected to the microphone output terminals 1 and 2 via a resistor 4
and a capacitor 5. The oscillator 6 is a low frequency oscillator that generates a signal having a
frequency lower than the audio frequency band to be considered as a cue, and in the present
embodiment, the collector output of the transistor 7 having a width m is a capacitor 8, CR phase
shift circuit consisting of 9.10 and resistors 11 and 12 (the phase shift amount is ?. ) Is used to
feed back to the base of the transistor 70), but various other oscillators can be used. A Zener
diode 14 for stabilizing the power supply voltage and stabilizing the oscillation is connected
between the grandchild line 13 for supplying small spheres to the low frequency oscillator 6 and
the ground. The power supply line 13 is connected to the timer circuit 16 via the resistor 15. The
timer circuit 16 supplies power to the power supply line 13 of the oscillator 6 for a
predetermined time (for example, about 5 seconds) in response to the ON operation of the switch
17 for recording the cue signal, and (4) records the cue signal during this time. It is sustained.
This is because the ON operation time of the switch 17 is normally as short as about 1 second,
and the reproduction time of the cue signal at the time of reproduction in the cue mode or the
review mode is extremely short, which makes confirmation difficult. There are various
configurations of the timer circuit 16 as described above, but in the present embodiment, the
discharge of the charge stored in the capacitor 18 continues the ON operation of the switching
transistor 19 whose power supply is inclined on the switching side. That is, when the switch 17
for recording the cue signal is turned on, the resistor 20 is pulled to the ground, so that the
voltage division of the voltage dividing resistor 21.22 is switched to the base of the transistor 19
and the transistor 19 is turned on. At the same time, the current from the power supply gii
element 23 flows into the capacitor 18 to be charged. Next, even if the switch 17 is turned off,
the transistor 19 is maintained in the ON state by the discharge from the capacitor 18. The
discharge current from the capacitor 18 flows through the voltage dividing resistors 21 and 22,
and after a predetermined time elapses (for example, after 5 seconds), the transistor 19 or 0 (5)
FF is turned on. Since the power supply current is supplied to the oscillator 6 through the
resistor 15 while the transistor 19 is ON, the oscillator 6 generates oscillation and generates a
01-05-2019
2
cue signal at the microphone output terminal 1. , Send to 2. When such timer control is
unnecessary, the timer circuit 16 is removed, and a switch 26 for cue signal recording shown by
a broken line in FIG. 1, for example, is interposed between the power supply terminal 23 and the
resistance 15 of the power supply line. You may insert and connect.
In this case, the oscillator 6 oscillates only while the switch 26 is ON, and a cue signal is sent to
the microphone output terminals 1 and 2. Furthermore, the microphone device of the present
embodiment is a so-called microphone with a remote switch, and the remote terminals 23. 24 are
connected via the remote switch 25. Further, as shown in FIG. 2, since the terminal 23 is a power
supply terminal to which the power supply of the tape recorder 30, for example, the battery 35 is
supplied, the terminal 23 is used as the switching transistor 19 of the timer circuit 16. Connected
to the emitter. (6) The microphone unit 3, the dispenser 6, the timer circuit 16, the switch 17 (or
the switch 26) and the switch 25 are provided in a microphone case to constitute a microphone
device. Further, the switch 17 (or the switch 26) and the switch 25 are provided, for example, on
the grip of the microphone housing, and are easily turned on with a thumb or the like while
holding the microphone device in hand. It can be operated OFF. By the way, the microphone
output terminals 1 and 2 and the remote terminal 23.24 of the microphone device of FIG. 1 are
connected to the combination plug 27 shown in FIG. 2 and 2 integrally provided to the
combination plug 27. By inserting the plug into the microphone input jack 28 and the remote
jack 29 of the tape recorder 30, the microphone output terminals 1 and 2 of FIG. 1 can be
connected to the terminals 31 and 32 of FIG. The electric circuit 23.24 is electrically connected
to the terminal 33.34 in FIG. 2 respectively 0 (7). Here, the internal circuit of the tape recorder
30 shown in the second case will be briefly described as a dry cell or a commercial AC. From the
battery 35, which is a DC room door that has frequently dropped the voltage, through the power
supply switch 36, for example, each circuit unit, for example, the recording equalizer amplifier
37 or the Is performed turtle source subjected pledge to motor 38. Among the terminals 31. 32
of the microphone input jack 28, the terminal 32 is a ground terminal and is connected to the
ground line of the battery 35, and a microphone signal from the terminal 31 is sent to the
recording equalizer amplifier 37. The output from the recording equalizer amplifier 37 is sent to
a recording head (not shown) of a tape recorder via a line amplifier or the like. The remote jack
29 is press-connected between the power supply switch 36 of the battery 35 and the motor 38,
and if the plug is not inserted, the terminals 33 and 34 are electrically connected. The power
supply current is supplied to the motor 38 in response to the ON operation of the power supply
switch 36.
When a plug is inserted into the remote jack 29, the terminals 33.34 are respectively connected
to the terminals 23.24 of the microphone device shown in FIG. 1 and the power switch 36 is
turned on. Although the power supply is connected to the terminal 23, the supply of the power
supply current to the motor 38 is not performed unless the remote switch 25 is turned on.
01-05-2019
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Therefore, in accordance with the on / off operation of the remote switch 25, whether the motor
38 of the tape recorder 30 is rotated or stopped is controlled, and the tape traveling is
controlled. As apparent from the above description, according to the microphone device of the
present invention, since the oscillator 6 for generating the cue signal is provided on the
microphone device side, a general tape which does not have the cue-It recording function By
simply connecting this microphone device to the recorder, the cue signal can be recorded at a
necessary place according to the recording content, and the location of the recording content can
be clearly determined when the tape recorder is reproduced in the cue mode or review mode.
Eight can. Therefore, it is easy to search for the recorded content of the recorded tape, which is
convenient. (9) Further, since the cue signal recording switch 17 is provided in the microphone
device, even when dictating recording while holding the microphone device by hand, for
example, the switch operation is performed with the tape recorder 1i 111 as in the prior art.
Since there is no need to switch the cue signal recording with the microphone device at hand,
operability is greatly improved. In the above embodiment, the microphone device with the
remote switch using the combination plug is shown, but the present invention can be easily
applied to such a microphone device without remote capability. In this case, for example, as
shown in FIG. 3, a dry cell 40 or the like serving as a battery is provided on the microphone
device side, and the dry cell 40 is connected to the timer circuit 16 as described above via the
switch 41 for cue signal recording. And a cue signal generating oscillator 6 may be connected.
Here, in the case of a microphone device requiring a battery like a condenser microphone, this
battery may be used as a power supply for the oscillator 6. Furthermore, the oscillator 6 may be
constantly oscillated, and a switch for recording a cue signal may be inserted and connected
between the oscillator (10) and the microphone output terminals 1 and 2. 4. Partial description
of the drawings FIG. 1 is a circuit diagram showing an internal circuit of a microphone device as
one embodiment of the present invention, and FIG. 2 is a combination plug 27 and a tape
recorder from the microphone device of FIG. FIG. 3 is a block circuit diagram showing the main
part of another embodiment of the present invention.
1. 2-0 microphone output terminal 3--Microphone unit 6-Oscillator 16 for cue signal generationDocument timer circuit 17. 26, 41-Cue signal recording switch utility model registered applicant
Sony Corporation Attorney Attorneys Attorney Koike (11) N111: False '-1 = ~ i6 taste ill'.
Chikuno's. Study wb-, 1 dry------1 y э-2: +1 (, ll l l и и и o :, 5 yo or ? I / 1: X to pole и и и? 1-3 1--------------------! Go: ?, S, '8 ? 5-------: l' ''-0 и 1? j ииииииииииииииииииии, ?Sl 7 ░ ? ? ? ? ? ? ? ? ? ? ?
? 2 ((,, ? и 1,, l-?-6, other than the above Inventor Minatokunashi 'address 1-7-4 Konan,
Minato-ku, Tokyo Shipaurakoujonai Sony Corporation Shibaura Factory Name Anight Shio Asai
Toshio n-bite / ???
01-05-2019
4
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