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'' '願 Showa 4% November 〃 〃 Secretary General Patent Office Saito-Jl 11 懸 l · name of the
invention 争 light solid three-dimensional nomination Il! fIk Regeneration and reproduction
electric power [phase] Japan Patent Office ■ Japanese Patent Application Laid-open No. (1976)
5.22 持 -7),) ダ 一】】 庁 整理 7J 2− 2− 明細 明細 名称 多元 多元 多元 及 び 及 び 及 び 再生 再
生 再生 再生 再生 再生 FF FF 7 FF FF 1 軛Range 1: King channel signal, modulation sub-channel
number one hundred thousand and t multiple charge multiple record number directly in the
record table, means for raising the low input signal level t, and (iro) By the iH power source
means, the multiplexing · signal to the storm (Iron 11 drawing number storm cost to the
recording sister group of Lakka Zen temple above multiplex 1! 1M r to take off in a controlled
manner. Scope of the multi-channel signal and modulation sub-channel No. 1 100 and the multichannel 1 sub-system 1) The input signal level is low, and by means of 信号 (iro) iH power source
means, ・ (Iron 11 号 嵐 嵐 嵐 嵐 ラ ラ ラ ラ ラ 記録 俸) The above multiple 1! 1M r to take off in
a controlled manner. 2) King channel · One 100 * and modulation subchannel signal tmultiplexed, and one pilot with pilot No. 16 inserted in d-multiplex one-to-one No. 1 at 1 input
level of input No. 15! -A means for detecting the above-mentioned pilot signal, and a means for
Novell control of the Riboan sub-channel No. with the above-mentioned pilot No. 16 -With regard
to force non-invention Q, multiple recordings and reproduction irons, when the level of the
recording signal recorded by uJft1J on the monument of Rakka is lowered at the same time, the
recording signal is simultaneously recorded on this group. The pilot No. 16 is completely
recorded, and at the time of reproduction, this pilot signal is taken out, and demodulation,
reproduction and identification t level control from the record gain is performed with respect to
multiple recording signals and recompression = it. · In the popular 4 channel carrier disc record,
the SN ratio of the king channel signal is excellent, but the SN ratio of the a: J channel signal is
reproduced at its low level b% 11C worse, the noise is a noise that the earwax 9 is bad. In the
case of the CD-40,000 system, noise reduction 'i' is used to reduce this drawback, and the noise
k'c 92. The gear rear disc's S / N ratio Uy and 讐 are sought, but with this 3 CD- 傭 type, there is
a defect that distortion is likely to occur at the time of book residence. In the case of UD-4, which
will be described later, noise reduction is not used in consideration of the reproduction
distortion, and the entire channel number n of the reconnaissance sub channel 1g, that is, TT and
TQ signal signal frequency mantissa narrows completely: Temporary tone EndPage: We are
aiming at improvement of noise and temporary tone distortion.
When playing back a stale record or a record with a poor signal-to-noise ratio, noise is noticeable
when the playback signal is low, but noise is masked to the playback signal when the playback
signal is high. I have lost my ear. Also, since noise is heard on the lead-in, lead-out, and feed
groove portions between tracks where no audio signal is recorded, the subchannel signal of that
portion, ie, TT and TQ signal level full image The noise is reduced and the reproduced signal is
less noisy. In order to lower the level of this sub-channel signal and reduce the noise level of the
playback 1g issue, it is fully detected that the playback signal is low level by the TT signal or LTT
doubled signal described later, and the control signal is used as a control signal And control
signal 2! i-control. However, in this case, one control circuit becomes complicated, and setting an
attack time or a release time has the disadvantage that dt, <, modulation noise is generated as a
control voltage component. Therefore, the main purpose of the present invention is to perform
level control of the sub-channel signal due to the presence of the pilot signal and the absence of
the JP-A-5l-58902 (2). In this way, it is possible to make the modulation noise inaudible to the
ear, and it is only necessary to detect the pilot signal to generate the control voltage for
controlling the sub-channel signal t level. It is a name of the present invention to provide a multifaceted recording and reproducing apparatus in which a conventional mermaid is eliminated
which does not require many detecting apparatuses i in the reproducing apparatus. The
application of the present invention to the t-UD-4 system will be described in detail with
reference to FIGS. 1 to 3. FIG. 1 is a block diagram of a recording system of the multi-purpose
recording and reproducing apparatus according to the present invention, and FIG. 2 is a block
diagram of a reproduction system of the present invention. The recording system of the invention
is described. (1) is a tape recorder, and 牡 and 場 are four front and rear left and right signals
representative of the whole sound field, ie,% 5LF = 5RR9SL13 and SRB signal [8, 尋 尋 信号 7 七
壬 コ ー ダ (2) Supply. These four front and rear left and right signals are, for example, the left
front side, ie, LP, right front arranged in the axial space surrounding the .sigma .- # a portion in
the reproduction system of the present invention shown in FIG. That is, the RF, left rear, ie, LB
and right rear, ie, RB speakers correspond to lrL signals obtained from the microphones
corresponding in position. From the encoder (2) K, four front and rear left and right signals, ie,
SLF "RF 'SLH and S plane signals and the following equation (1): k7 K'3r' TL 'TR, T7 and TQ times
TL = 0, 924 SLp 722.5 ° + 0.3858 aF / 67, 5 ° 0.6 0.6858 R 131-67, 5 ° + 0.9 248 LB / -22,
5 ° TR = 0, 383 SL p / = 67.5 ° soil, 0, 924 SR p / -2, 2,5 °, 924 SRB, each 2.5 ° + 0j83 SLB
乙 7.5 ° TT = 1 '+ 4148 Lp / 135 ° + 1.4148 RF / 45 ° (1) × 1.414 SRB / −45 ° + 1.
414SLB1-165 ° TQ = 1.414SLp / 90 ° + 1.4148RP and -90 ° + 1.414sHBf90 ° + 1.4148LBI90 ° UD740, in this blue signal, the TL and TR signals among the king channels It is called a
signal, and it is also called TT and TQ Ig 會 subchannel 1 g. The main channel signal from this
encoder (2), that is, TL and TR signal seven phase compensation and band limiter (8), where
there is phase compensation and mixing via fcTL and TR signal all recording equalizer N path (4)
Feed the passage (5). Sound recording? The characteristics of the Iza cycle (4) are standard 1 s 一
と し て as the RIAA recording characteristics. On the other hand, the subchannel signal from the
encoder (2), ie, the TT and TQ doubled signals as well as the phase compensation and band
limiter (8), where the band limited TT and TQ doubled signals, pre-emphasis circuit (6) k In the
zero angle wave modulator (7) supplied to the angle IAc modulator (7), the TT and TQ times
signal angle modulation from the carrier signal t pre-emphasis circuit (6) of the frequency fc is
performed. This subchannel signal, that is, the cross-signal, seven-angle modulated signal of TT
and TQ signal frequency fc, is called the modulated subchannel signal, that is, the TT1 and TQ1
signals. This modulation-channel signal TT1 and TQlr. On the other hand, the four front and rear
left and right signals 5LFj SRF, SLB and EndPage supplied to the f-7 ′ ′ recorder (1) encoder
(2): four front and rear left and right signals 5LF 1.5 RFI advanced temporally in comparison with
the 2SRB signal , S and 1 SRB 'signal t signal-1 tape recorder etc. f' Lfc obtained from the original
row head, and adding four front and rear left and right signals to matrix @ path (6), matrix circuit
(6) leverage We make τ 情 7 from the four front and rear left and right signals. The TΣ signal
has a relationship of TΣ = SLF “15 RF1 × SV” + SR8′g), and the tone level is high when the
TΣ signal level is high, and is low when the TΣ signal level is low. The tone level may be
determined based on the level of the signal level.
Of course, the level of the tone level can be determined even if the level of the TΣ signal level is
not high or low. For example, it may be determined whether the musical tone level is high or low
at the level of the significant signal of the L signal and the TR signal described above. The TΣ
value from the matrix 1g path (b) can be generated by a level detector (good) consisting of a
probator and a level detector. This level detector detects the level of the above-mentioned
T.SIGMA. Signal level, and supplies it to the positive voltage '10' gate times wI.alpha. The voltage
t gate is supplied to JP-A-5151-5890 (3) α →. Alpha good is a pilot signal generator, and the
output of this pilot signal generator (b) is supplied to the gate circuit wI (b). Pilot signal (PL)
71'Ss which is the output of this pilot signal generator Gin) As shown in FIG. 3, its frequency PL
is the occupied frequency band of the main channel signals TL and TR and the modulated
subchannel signals TT1 and TQ1. The frequency within the guard band between the frequency
band occupied by The gate circuit α ◆ pulls out the Ilot signal (PL) 't' only when the tone level is
low, and the extracted No (Ilo nod signal (pt,,) '!! i'1 mixing port M (connected to the next stage of
51-added to other mixing times w1 (8) 0 mixing times wI (8) in one mixing circuit (5) Two
transmission signals (TL + TT ') and (TB + TQ') are 'superimposed on the pilot signal (PL)' from
gate @ path-and the output of this mixing circuit (8) is a recording amplifier Supply to (9). The
output t of this recording amplifier (9) · In addition to the shouts, with the cutter Rad 輛, each
transmission signal having the spectrum shown in FIG. Cut the left and right sound grooves (17t)
and (17R) in 2). Similarly, in this case, the above-mentioned pilot signal is cut in the larch board
in a radial manner. Next, one reproduction system of the present invention shown in FIG. 2 will
be described. An A * record is obtained by means of a stamper or the like obtained by an
eleventh racker (G), and placed on a turntable (6) as shown in FIG. Add to the multi-dimensional
reproduction signal sound from the record board (d) obtained from the pickup (21),
preamplification @ (good). Through the playback equalizer circuit (wIP) having the reverse
numbering function to the recording equalizer circuit (4) shown in FIG. 1 and included in the
playback signal. In addition to the modulation subchannel signals TTl and TQ'kb angular tone
adjuster @) which are taken out via 0), during the feed to the decoder (in the middle), to the band
M pass V temporary device). Here, this signal is demodulated and the subchannel signals TT and
TQf are obtained as the output of the angle value 1, 20).
Further, the fL circuit T and the TQ signal level control circuit 7) and 7) and j) supply to the filter
while passing only the frequency PL of the output sound pilot signal (PL) from the front
amplifier. In addition to the pilot amplifier consisting of the circuit and the sum circuit)), the pilot
signal of the pilot @ -1'1 (PL) 'tit) as the output of the pilot signal (PL) (j) The control voltage,
which is the output, is added to the control (Ilfl 蒐 pressure generation 1g circuit (81)) consisting
of a velograph and a Hankata type wart circuit, and the above-mentioned level city 1j? +11
Circuit portion) and (291) respectively. In this control voltage, when there is a pilot signal (PL)
71c, the level control (b) path example and (0 axis addition to the axis) are performed so that the
full level of the subchannel signals TT and 1 and TQ can be obtained. Level control @ Path μs)
When the pilot No. 16 (PL) gets up during the regeneration command, lower the level to 7 cTT
and TQ 1 g No. Supply to the decoder example. By adding the output of the decoder example to
前置 rp # a> * and adding it to the front left and right Nosbeka LP, RF, LB and RB respectively,Toshi 4 listens to the multi-dimensional signal reproduced from the record board You can do it.
Since the conventional Ritsumeikan signal recovery and reproduction system rt is configured to
perform TΣ signal level control in the secondary channel signal TT and TQT ′ ′ b
reproduction system, it is possible to set the threshold level or , Attack time EndPage: The setting
of 3 temples became complicated, and the operation of the recording and playback device
became unstable. In the non-invention mode, pilot signals (PLi-inserted in advance to sub-channel
signals TT and TQt-down musical tone portions in recording), and in reproduction this pilot
signal (pL) k is output, As a result, the uninvented recording and reproducing apparatus is not a
measure to ensure creation of the front sheet, and the control circuit of the reproduction circuit
is dark. Have an effect of knee 1 knee. 1i 113 I # L description of the figure Fig. 1 Ia, incomplete
pluralism · single record and h compilation [[絖 4 絖 絖 、, Figure 2 (']: not invented in the same
strain FIG. 6 is a view showing a pec- tor of a multi-purpose reconnaissance force recorded on a
sound board of the Lakka board and a sound board of the Lakka board. In the figure, (1) is a chi
precoater, (2 J is an encoder, (8) i'1 cancellation and band limiter, (4) is a recording equalizer IP!
1 wl 5, (6) and (8) mixing circuits, <6) u 'L: / JP-A-51-58902 (4) fascia circuit, (7) an angle
modulator, (9) a recording amplification (11) is a matrix 1g circuit, (1) is a level detector, 98 is a
pilot signal source generator, 4 is a gate passage, (6) is a cutter turntable, q → is a rack board,
(17t) and (17R) is a groove, (d) is a record board, (d) is a turntable, (a) is a listener, (21) is a
pickup,) is a previous d Amplifier, (feather) is a reproduction equalizer circuit, t8 is a decoder, (fi)
is an advanced ranger, 劉 is an angular tone regulator,-) is an amplifier, (7)) and rigid is a level
Control flL!
l! l))) indicates that the pilot term middle device st81i has seven main control ports. Special
issue 薯 Japanese Columbia Co., Ltd.-EndPage: 4 Figure 3 sound filling procedure correction
document 1, display of the case 1974 patent application No. 133423 No. 2, name of the
invention multi-objective three-dimensional signal recording and reproducing device 3,
correction The person who has made a special appearance 薯 Japanese Columbia Ltd.-EndPage: 4
Figure 3 sound filling procedure correction book 1, the display of the case 1974 patent
application No. 133423 No. 2, the name of the invention multi-dimensional three-dimensional
signal recording and reproducing device 3, Patenter (3388) Patent Attorney Ito et al. 5, Date of
correction instruction: Showa Year:], '1. f.
4, agent cloudy 160 ・
6. The number of inventions to be increased by the amendments 7. The application for correction
and termination, and the column 8 of the detailed description of the invention in the description,
the contents of the amendments 1, the request are amended as shown in the attached sheet. 2. In
the specification, insert the seventh negative three lines, r (1) J after "tape recorder". 3, --- page 8,
line 19 "Cutter Turntable" is corrected as "Cutter Turntable". 4, the same, 9th negative 2 lines,
insert [1, 61 j after "Lack board". The above patent application axis positive) 117 (Japanese sum
20 November 20 Patent Office Secretary Hideo Saito 4; patent applicant 5 · agent cloud 160
Suma 1-chome Nishi-Shinjuku 1-chome, Shinjuku-ku, Tokyo, Tokyo (Shinjuku Building) -Tokyo
(03) 343-5821 (representative) EndPage: 5
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