|95,000yen(October, 1988 release)
The compact disk player which attained high-quality
sound-ization more by attaining simple-ization thoroughly while inheriting the
high-quality sound-ized technology of PD-3000.
In order to lessen Denso
Roth as much as possible and not to receive the influence of the from else,
compact-disk direct construction is adopted and it has arranged simply and
straight along with the fluence of a signal from a pickup to a lineout.
printed circuit board of digital one/servo, and an analog circuit is made to
gain separate independence first. And by low-impedance-ization of a grounding,
seal dead PCB (double-sided printed circuit) from which the shielding effect
effective in flying from a digital system to an analog system is acquired is
extensively adopted with the digital system, the analog system, and the power
source. Moreover, an analog substrate also attains shortest-ization from an
input to an output, and makes it simultaneously the symmetrical structure of the
The cross interferencee between signals is
reduced by this compact-disk direct construction-ization.
shortest-izing of a transmission route and the parallelization of } power source
were attained, and it has connected with the power-source line of the analog
substrate from a power-source substrate direct even in the power circuit.
The digital filter of 18 bits of 20-bit operations output is adopted as
a digital filter.
The sampling frequency of 44.1kHz is raised to 352.8kHz, 8
times, and the Bata Wace 3 order low pass filter excellent in the phase response and the frequency ripple is used for the analog stage.
The real 18
bitD/A converter of a right-and-left independent stream composition is adopted
as a D-A-conversion part, and an 18-bit operation is performed on all the level
from the Dainyuu power to the small input. This has eliminated the cross
interferencee and phase gap between channels.
Moreover, the linear envelope
system (glitch less type) which is an original technology of Pioneer is adopted,
by rectifying the error of a upper bit to a proper value, a D-A-conversion
precision is raised and zero cross distortion is decreased.
D-A-conversion precision support of double Mie, such as a coil only for a
digital analog converter, an exclusive power source, and a low-impedance
guarding linking, is raising the reproductivity of minute level.
clean laser pickup in which Pioneer did proprietary is carried in the pickup.
By reducing optical components, such as a collimator lens, the power loss of
optical system is decreased sharply, and also the aberration in an optical path
decreases, and little clean and distorted pickup is enabled.
adopting the photodetector with built-in I/V transducing head amplifier which
amplifies a several microampere minute signal to about 200mV, the occurrence of
the Jitter by a reading error or disturbance is suppressed in combination with
an Accu Focus system.
Furthermore, the engineering plastic pickup body which
divided the pickup body into about 1000 member, and repeated and developed the
intensity analysis is adopted, and difficult precision form is made possible in
the conventional die-casting.
First class push pull FET buffer amplifier
is adopted as two stages of the lineout of the analog stage, and the I/V
amplifier stage, respectively. The more exact waveform transmission which is not
influenced by the load intensity connected by this is made possible.
From the vibration proof of the pickup treating minute level to the
vibration proof of PCB (double-sided printed circuit), the multi-Resonance absorber (MRA) which is a technology of no vibrating and absent-resonance-izing
of type corresponding to the unnecessary oscillation frequency covering all the
bands is developed and carried.
As the 2nd base that ranks second to a
honeycomb chassis, the float base is newly installed and the unnecessary
oscillation is suppressed by carrying out the floating of the circuit board and
The magnet scheme disk stabilizer which suppresses an
unnecessary oscillation of a disk is adopted as a pickup part.
Furthermore, after making few newly developed linear motor servo mechanisms of an oscillating
occurrence into a low centroid structure, it supports firmly by the high
rigidity and a Takauchi part loss FRP Mechanism-base, and
absent-resonance-ization is attained by mounting this on a multi-Resonance absorber.
The aluminum panel of 4mm thickness is adopted as the front
panel, and also in order to improve absent-resonance-izing and rigidity of a
bonnet, the dual structure aluminum top bonnet is adopted.
adoption of a copper plating honeycomb chassis or a large-sized honeycomb
insulator, the system is supported firmly.
The core size has adopted as
a power transformer the mass transformer of the lamination top core fabric which
is about 3 or more times of a required capacity, and stops a magnetic
distortion, an oscillation, and leakage flux. The by filer twist volume which
reduces the improvement in the degree of balance of installation of an Output
voltage, a noise and an oscillation, and also stray capacity is adopted as this
Moreover, the audio system, the D-A-conversion system, the
digital system, the display-device window, etc. have employed 4 independent
coil, 4 independent-source circuitries, and 7 regulator so that each part may
get the powering stabilized without affecting it. Furthermore, in the audio
circuitry, the implementation of a highly precise clean power source, such as
stationing the discrete push pull regulator who shows the transient response
property which was excellent to the load variation, is aimed at.
very-thick 4 core power cord with } polarity window is adopted as a power cord.
It operates, only when the operation key is pressed, and the clean
microcomputer which prevents a scanning noise is carried.
scanning noise at the time of display-device putting out lights is also
considered, the display-deviceoff switchpoint is carried, and the noise
occurrence is suppressed.
||Compact disk player
||3 beam semiconductor laser scheme
||A 16-bit linear line and 18 bits of digital
|Frequency characteristic (EIAJ)
|SN ratio (EIAJ)
||111dB or more
|Dynamic range (EIAJ)
||99dB or more
|Channel separation (EIAJ)
||108dB or more
|Wow and flutter (EIAJ)
||Below a limit of measurement (}0.001%W.PEAK)
||0.0022% or less
|Output voltage (EIAJ)
|The number of channels
||Two channels (stereo)
||Coaxial output: 0.5 Vp-p/75ohm
power: -15dBm--20dBm (wavelength of 660nm)
||Width 420x height 127x depth of 320mm