< 1 >
High-Power 7.1-Channel A/V Control Receiverseivers ----
A Host of Digital Technologies Applieded forfor Superior Sound, Pictures, and Stylele..
JVC now offers the latest-generation of AV control receivers -- RX-D702, RX-D402, and RX-D401 -- which feature a sleek profile to complement today’s and future home cinema systems.
But what gears the units for the future home cinema is not only the stylish design. Despite the slim dimensions, the units are ready to deliver powerful, high-quality sound from
various sources -- including PC music files -- and provide superior picture quality, too.
What’s more, their expanded connectivity lets you easily connect the units with your PC, and even permits HDMI connections -- the latest interface for transmitting audio/video signals.
Enabling these and many other feats are a host of advanced digital technologies newly incorporated into the units.
In this technical guide, you will see the details of those technologies and find how the advanced A/V receivers will upgrade your digital home theater systems.
< 2 >
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Design Concepts |
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High-Quality Pictures -- Advanced Technologies that Even Permit HDMI |
Compatibility |
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PCPC Link -- USB Connection for Receiving Uncompressed PCM Data from |
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CC Converter -- A JVC-Original Technology for Superior Sound |
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Aureus™ -- High-Performance DSP for Superior Sound Quality |
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Hybrid Feedback Digital Amplifier Ver.III -- An Upgraded Version of |
JVC-Trademark Digital Amp for Unmatched Sound Quality |
< 3 >
1 High-Quality Pictures
The JVC A/V receivers deliver not only superior sound, but also superb pictures with a host of advanced technologies. The units feature HDMI terminals and use of DCDi by
FAROUDJA.
HDMI
HDMI -- The Next-Generation Digital Interface |
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HDMI -- Easy Connections for All-Digital Transmission |
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DCDi by FAROUDJA
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Connection Example -- RX-D702 |
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Connection Example -- RX-D402/RX-D401 |
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What is DCDi by FAROUDJA? |
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Effect Examples (1) |
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Effect Examples (2) |
11 |
< 4 >
HDMI
HDMI -- The Next-Generation Digital Interface
RX-D702 RX-D402
*Also applies to RX-D401
HDMI (High-Definition Multimedia Interface) -- An
Industry-Supported, Digital Audio/Video Interface Developed for Next-Generation Home AV Devices.
Its remarkable benefits include:
1.All digital provides the highest quality available --
HDMI is the only interface in the industry that can handle both uncompressed high-definition video and uncompressed multichannel audio. Supported HD video formats include 720p, 1080i and even upcoming 1080p.
2.A single-cable connection for transmission of high-quality audio and video signals
3.HDCP (High-bandwidth Digital Content Protection) is supported
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Digital |
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Component Video |
DVI |
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HDMI |
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Cable |
Video |
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Audio |
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HDMI Founders |
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Remote Control |
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Hitachi |
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PC Compatibility |
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Yes |
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Matsushita (MEI) |
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Philips |
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Content Protection |
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Silicon Image |
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Signal Format |
YPbPr |
RGB |
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YPbPr/RGB |
SONY |
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Thomson Multimedia |
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Application |
Consumer AV |
PC |
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Consumer AV |
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Toshiba |
< 5 >
HDMI
HDMI -- Easy Connections for All-Digital Transmission
RX-D702 RX-D402
*Also applies to RX-D401
Single-Cable Connections |
5.1-ch Audio |
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2-ch Audio |
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Display |
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DVD Player |
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10 Audio + 9 Video Cables |
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Component Video |
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STB |
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Display |
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DVD Player |
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3 HDMI Cables |
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Receiver |
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STB |
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All-Digital Transmission of High-Quality Video & Audio
Even System Control is available
Receiver |
DisplayDisplay |
Digital |
D/A |
A/DA/D |
Digital |
Converter |
Converteronverter |
Digital |
< 6 >
DCDi by FAROUDJA
Connection Example -- RX-D702
RX-D702
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DVD/VDR/D-VHS/STB |
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Display |
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480i/p, 720p, 1080i |
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480i/p, 720p, 1080i |
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PCM (DVD-Audio) / DD / DTS |
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DVD-Audio |
HDMI |
FAROUDJA |
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Speakers |
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SPDIF |
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Hybrid Feedback |
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DSP |
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RX |
TX |
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Digital Amplifier |
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HD, 480p |
480p |
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A/D |
I/P |
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Converter |
Conversion |
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Inputs |
Outputs |
Y Pb Pr |
480i/p |
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Component |
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HDMI |
HDMI |
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Component |
Component |
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Up |
OSD |
.... S-Video |
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Converter |
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S-Video |
S-Video |
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Composite |
Composite |
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Composite |
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< 7 >
DCDi by FAROUDJA
Connection Example -- RX-D402/D401
RX-D402
*Also applies to RX-D401
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DVD/VDR/D-VHS/STB |
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Display |
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480i/p, 720p, 1080i |
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480i/p, 720p, 1080i |
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PCM (DVD-Audio) / DD / DTS |
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DVD-Audio |
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HDMI |
FAROUDJA |
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Speakers |
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SPDIF |
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Hybrid Feedback |
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DSP |
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RX |
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TX |
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Digital Amplifier |
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480i |
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480p |
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A/D |
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I/P |
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Converter |
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Conversion |
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Inputs |
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Outputs |
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HDMI |
HDMI |
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Component |
Component |
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Video |
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S-Video |
S-Video |
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Decoder |
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Composite |
Composite |
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....
Composite S-Video Component
< 8 >
DCDi by FAROUDJA
What is DCDi by FAROUDJA?
RX-D702 RX-D402
*Also applies to RX-D401
The new A/V receivers can convert video signal format to HDMI for display on a compatible monitor, whether the signals are from Composite, S-Video, or Component input.
In this process, the unit converts interlaced pictures to progressive ones -- a process known as “IP conversion” -- using “DCDi by FAROUDJA”, a renowned, high-performance device. It features a host of advanced technologies for noise reduction and reproduction of high-definition pictures, including:
3D Deinterlacer
Film Mode: Recreates the original film frames by accurately blending the fields back together in progressive scanning -- for images free of motion artifacts and with full vertical resolution.
Video Mode: Delivers pictures from video sources by eliminating jagged edges on diagonal lines.
3D Noise Reduction
Filters out the noise temporally, without smearing or ghosting of moving objects in the image.
3D Cross Color |
Fleshtone Adaptive |
Suppression |
Noise Reduction |
Prevents leakage of color |
Controls noise reduction |
information to chroma |
coefficient to deliver optimum |
channels. |
human flesh color. |
< 9 >
DCDi by FAROUDJA |
VISUAL PROOF |
Effect Examples (1)
3D Deinterlacer
A unique algorithm that identifies all the moving edges in a scene and adjusts the angle of interpolation at each pixel so that the interpolation always follows the edge instead of crossing it, eliminating staircasing or jagged edge artifacts.
Jagged Edges on Diagonal Lines
Smooth diagonal lines are also delivered by the 3D Deinterlacer.
RX-D702 RX-D402
*Also applies to RX-D401
Cross-Color Suppression
While composite signals are decoded, high-frequency luma information leaks into the chroma channel, generating noise that looks like flashing colors or rainbow patterns.
Smooth Diagonal Edges |
The Cross-Color Suppression effectively |
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eliminates the noise with high-performance |
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chroma processing. |
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DCDi by FAROUDJA |
VISUAL PROOF |
Effect Examples (2)
Fleshtone Adaptive Noise Reduction
Noise reduction applied on overall picture may cause an adverse effect -- unnatural flesh color.
The Fleshtone Adaptive NR detects flesh color contained in a picture and controls noise reduction coefficient to deliver optimum human flesh color.
Red Cr
Magenta
CbMi
CbMa
Fleshtone
CrMa
Yellow
CbCrdiff
Cb
Blue
CbCrdif
Corner Cutouts Defined by
ABS(Cb-Cr)=CbCrdiff
RX-D702 RX-D402
*Also applies to RX-D401
Green
Cyan
Definition of Fleshtone Area in Color Vector Field
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2 PC Link -- USB Connection for Receiving Audio Signals from PC
The RX-D702 permits transmission of stereo audio signals from your PC (MP3, WMA, Linear PCM, etc.) for listening via your audio system. The unit even permits wireless USB transmission, which ensures superior, nearCD sound quality as well as enhanced convenience.
Wireless USB Connection
Superior Sound Quality Matching CD/DVD |
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User ID Learning Function & Auto Scan |
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Comparison of Signal Formats |
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USB Connection
Transmission of Stereo Audio Signals from PC |
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Wireless USB Connection
Superior Sound Quality Matching CD/DVD
RX-D702
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Max. reach is 30m, but this depends on the environment.
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Note PC or
Desk-Top PC
USB Connection
(1)The 2Mbps high transmission rate using the 2.4GHz band permits transmission of uncompressed signals for lossless reproduction.
(2)Input signals are free of D/A or A/D conversion until just before output, which prevents conversion loss.
(3)Use of DSSS (Direct Sequence Spread Spectrum) modulation technology enables transmission of uncompressed signals with superior resistance against noise, which retains superb sound quality.
(4)Corresponds to 16-bit, 32kHz/44.1kHz/48kHz sampling rates.
(5)Almost real-time data transmission -- delay time is only 2 msec or less.
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Wireless USB Connection
User ID Learning Function & Auto Scan
RX-D702
User ID Learning Function |
Auto Scan |
To ensure security, the wirelss USB transmitter and the RX-D702 share a specific “user ID”. This means devices without the same ID cannnot receive signals from the transmitter. And when you replace the transmitter, “User ID Learning Function” would be convenient. This function lets you easily set up a new user ID, so that the unit can receive signals from the new transmitter.
Transmitter
The Wireless USB additionally features “Auto Scan”, which stops interruption from other signals in the same room. When the system is turned on, this function automatically detects electric waves from other devices -- wireless LAN, for example -- and selects a band that won't be interrupted by the other signals.
When the signal transmission is interfered by other waves while using the unit, simply press and hold the “Channel Key” (on the transmitter) for a few seconds. The transmitter automatically switches the band to a one that won’t be interfered by the waves.
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Channel No. |
Center Frequency |
Channel No. |
Center Frequency |
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2,412 MHz |
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2,447 MHz |
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2 |
2,417 MHz |
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2,452 MHz |
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2,422 MHz |
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2,457 MHz |
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4 |
2,427 MHz |
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2,462 MHz |
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Channel Key |
ID Key |
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2,432 MHz |
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2,467 MHz |
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2,437 MHz |
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2,472 MHz |
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7 |
2,442 MHz |
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Wireless USB Connection
Comparison of Signal Formats
RX-D702
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Bluetooth |
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JVC |
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Wifi/802.11b |
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Format |
Compression |
No Compression |
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Compression |
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No Compression |
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Data Rate |
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2Mbps |
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1Mbps |
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11Mbps |
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Delay Time |
Approx. 400msec |
Under 2msec |
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Approx. 600msec |
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Our Outstanding Points (Compared with Other Wireless Products |
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Model A |
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Model B |
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Feature |
Wired |
Ethernet |
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Ethernet |
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Wireless |
Wireless LAN Optional |
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Wireless LAN Optional |
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PCMCIA Card Slot: |
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for still pictures from |
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Exclusive Network Only |
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digital cameras |
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Control with OSD: |
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= Movie, Music, Pictures |
JVC Advantages
O No optional device |
O Receives signals |
required. |
from any PC |
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(including Mac). |
OCC Converter improves the sound quality of compressed music files from PC.
< 15 >
USB Connection
Transmission of Stereo Audio Signals from PC
RX-D702 RX-D402
*Also applies to RX-D401
(((( )))) (((( ))))
Note PC or
Desk-Top PC
USB Connection
(1)Corresponds to 16-bit, 32kHz/44.1kHz/48kHz sampling rates for superior sound.
(2)Permits playback of any music files that can be played on the connected PC, regardless of the software (Windows Media Player, iTunes, etc).
(3)All-digital transmission --> No D/A or A/D conversion.
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3 CC Converter -- A JVC-Original Technology for Superior Sound
K2 Processing is the result of a close collaboration among JVC studio engineers, producers and hardware engineers, embodying the elaborate algorithms for a sound quality that is close to the master by professional standards. The CC Converter is one of its applications to improve the sound quality of not only pure audio sources but also compressed files, such as dts, Dolby Digital, and MP3. The CC Converter lets you experience a sound that is truer to the original master than ever. With the RX-D702,
front L/R channels are processed by the CC
Converter.
CC Converter
Background |
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Problems with Digital Conversion |
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Problem: An analog signal of a very faint strength cannot be |
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accurately recreated by A/D and D/A conversion. (1) |
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Problem: A high-frequency analog signal cannot be accurately |
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recreated by A/D and D/A conversion. (2) |
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CC Converter |
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Bit Expansion Section |
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Frequency Conversion Section/Range Expansion Section |
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CC Converter: How its workings differ from other |
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high-bit/upsampling systems |
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Comparison of -90dB, 1kHz Sine Waves: Bit Expansion On vs. Off |
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Comparison of Frequency Spectra: Range Expansion On vs. Off |
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P.E.M. D.D. Converter
D.D. Converter |
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Noise Shaping Response/Noise Spectrum |
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192kHz/24-bit and 96kHz/24-bit A/D Converters -- RX-D702 |
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192kHz/24-bit and 96kHz/24-bit A/D Converters -- RX-D402/D401 |
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< 17 >
CC Converter
Background
RX-D702
Digital audio started with Compact Disc and has since given birth to such super high-fidelity formats as DVD
Audio and SACD. There’s another trend in digital audio: compressed data formats. Music distribution over the
Internet, silicon audio using compact IC cards, and digital broadcast by satellite -- all these formats take advantage of audio compression technology. This means there are two diverging trends in digital audio -- higher fidelity and higher compression.
JVC is not only a hardware maker but also a software producer as well, so there has been a close collaboration between the hardware engineers and studio engineers for all aspects of digital sound production. “K2 Processing Technology” is one of the many improvements developed by this collaboration to achieve higher sound quality. It was implemented as the “Extended K2 Processing,” a critically acclaimed application to pure audio. The CC Converter is an adaptation of this technology for compressed music. Therefore, it improves the sound quality of both hi-fi sources such as CD and DVD (Linear Mode) and compressed music formats including MP3 and WMA (Compression Mode), benefiting a wide range of digital audio contents.
Sound Formats and Media: Quality vs. Compression
24-bit |
DVD Audio |
LINEARINEAR MODEMODE |
Higher |
(for CDs, DVDs, etc.) |
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Sound Quality |
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20-bit |
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16-bit |
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dts |
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DD |
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MP3 |
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12-bit |
MDLP |
AAC |
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SD |
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Higher |
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Telephone |
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8-bit Cellular |
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Compression |
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8kHz |
44.1kHz |
176.4/192kHz |
COMPRESSIONOMPRESSION
MODEMODE
(for MP3, WMA, etc.)
< 18 >
CC Converter
Problems with Digital Conversion
RX-D702
In digital audio, music is processed in digital form. The music played by musicians in a recording studio or a concert hall is picked up by a microphone and recorded in digital form, to be released for sale as packaged media, including CD. The consumers buy the CD to play on a CD player: the recorded music is converted from digital to analog for playback through an amplifier and speakers. The process of playing digital music involves analog/digital conversion and digital/analog conversion as shown below.
Process of Playing Digital Music
The sound quality of a signal depends on the following two factors when the signal is converted from analog to digital.
•Quantization wordlength (bits), which determines resolution or the expression of music in the amplitude domain.
•Sampling frequency, which determines the frequency response or the expression of music in the frequency domain.
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