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ADV611 の電気的特性と機能

ADV611のメーカーはAnalog Devicesです、この部品の機能は「Closed Circuit TV Digital Video Codec」です。


製品の詳細 ( Datasheet PDF )

部品番号 ADV611
部品説明 Closed Circuit TV Digital Video Codec
メーカ Analog Devices
ロゴ Analog Devices ロゴ 




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ADV611 Datasheet, ADV611 PDF,ピン配置, 機能
a
Closed Circuit TV Digital
Video Codec
ADV611/ADV612
FEATURES
Programmable “Quality Box”
Industrial Temperature Range (ADV612)
Hardware Frame Rate Reduction
100% Bitstream Compatible with the ADV601 and
ADV601LC
Precise Compressed Bit Rate Control
Field Independent Compression
8-Bit Video Interface Supports CCIR-656 and Multi-
plexed Philips Formats
General Purpose 16- or 32-Bit Host Interface with
512 Deep 32-Bit FIFO
PERFORMANCE
Real-Time Compression or Decompression of CCIR-601
to Video:
720 ؋ 288 @ 50 Fields/Sec — PAL
720 ؋ 243 @ 60 Fields/Sec — NTSC
Compression Ratios from Visually Loss-Less to 7500:1
Visually Loss-Less Compression At 4:1 on Natural
Images (Typical)
APPLICATIONS
CCTV Cameras and Systems
Time-Lapse Video Tape Recorders
Time-Lapse Video Disk Recorders
Wireless CCTV Cameras
Fiber CCTV Systems
GENERAL DESCRIPTION
The ADV611/ADV612 are low cost, single chip, dedicated func-
tion, all-digital-CMOS-VLSI devices capable of supporting
visually loss-less to 7500:1 real-time compression and decom-
pression of CCIR-601 digital video at very high image quality
levels. The chips integrate glueless video and host interfaces
with on-chip SRAM to permit low part count, system level
implementations suitable for a broad range of applications.
The ADV611/ADV612 are 100% bitstream compatible with
the ADV601. The ADV611/ADV612 comes in a 120-lead
LQFP package.
The ADV611/ADV612 are video encoders/decoders optimized
for closed circuit TV (CCTV) applications. With the ADV611/
ADV612, you can define a portion of each video field to be at a
higher quality level relative to the rest of the field. This “quality
box” feature significantly increases compression of less impor-
tant background details, while retaining the image’s overall
context. Additionally, the unique subband coding architecture
of the ADV611/ADV612 offer many application-specific
advantages. A review of the General Theory of Operation and
Applying the ADV611/ADV612 sections will help you get the
most use out of the ADV611/ADV612 in any given application.
The ADV611/ADV612 accept component digital video through
the Video Interface and outputs a compressed bitstream though the
Host Interface in Encode Mode. While in Decode Mode, the
ADV611/ADV612 accept compressed bitstream through the Host
Interface and outputs component digital video through the Video
Interface. The host accesses all of the ADV611/ADV612’s control
and status registers using the Host Interface. Figure 2 summarizes
the basic function of the part.
(continued on page 2)
ANALOG
VIDEO
SIGNAL
OR
IMAGE
SENSOR
SIGNAL
ADV7185
DECODER
DIGITIZER
ADV611/
ADV612
ADSP-21xx
SERIAL
OR PARALLEL
BITSTREAM FOR
TRANSMISSION
OR STORAGE
QUALITY BOX CONTROLS
FROM REMOTE SITE
Figure 1. Typical Application
8
COMPONENT
VIDEO I/O
FUNCTIONAL BLOCK DIAGRAM
ADV611/
ADV612
LOCATION, SIZE AND CONTRAST CONTROL
ON-CHIP
TRANSFORM
BUFFER
SUBBAND STATISTICS
DIGITAL
VIDEO
I/O PORT
QUALITY
BOX
CONTROL
WAVELET
FILTERS,
DECIMATOR &
INTERPOLATOR
QUANTIZER
& ENTROPY
CODING
HOST
I/O PORT
& FIFO
DRAM
MANAGER
BIN WIDTH CONTROL
16/32
HOST
256K ؋ 16-BIT DRAM
REV. 0
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 1999

1 Page





ADV611 pdf, ピン配列
ADV611/ADV612
Original Video Image
Image after compression/decompression shown
with different box size and position
PROGRAMMABLE
QUALITY BOX
VARIABLE CONTRAST
BACKGROUND
Figure 3.
The ADV611/ADV612 are real-time compression integrated
circuits designed for remote video surveillance or closed circuit
television (CCTV) applications. The most important feature of
these two devices is the “Quality Box.” With this feature the
user can define a box of any size and location within each field
of video that will be compressed at full contrast while the re-
mainder outside the box, or background of the image, is com-
pressed at a lower level of contrast. The background contrast
level is controlled by the user. The lower the contrast level, the
more the image will be compressed. The objective in a given
application is to adjust the background contrast to a level that
ensures both a recognizable and useful background as well as
the highest possible compression. Figure 3 shows how this qual-
ity box appears in final video.
The ADV611/ADV612 is housed in a plastic LQFP package
suitable for cost-sensitive commercial applications.
COMPARING THE ADV6xx FAMILY VIDEO CODECS
The ADV6xx video codecs support a range of interface, pack-
age, and compression features. Table II compares these codecs:
Table II. Differences Between the ADV601, ADV601LC, ADV611 and ADV612
Bits per Component
DSP Serial Port
Package
Pin Assignments
Temperature Range
θJA
θJC
Field Rate Reduction
Stall Mode
Field Truncation
Field Size Register
Field Bit Polarity Control
Evaluation Board
Target Applications
ADV601
10
Yes
160 PQFP
Unique
0°C to +70°C
31°C/W
7.5°C/W
Software
No
No
No
No
VideoLab
Professional
ADV601LC
8
No
120 LQFP
Unique
0°C to +70°C
35°C/W
5°C/W
Software
No
No
No
No
VideoPipe
Consumer
ADV611
8
No
120 LQFP
98% Similar to ADV601LC
0°C to +70°C
35°C/W
5°C/W
Hardware
Yes
Yes
Yes
Yes
CCTVPIPE
CCTV
ADV612
8
No
120 LQFP
98% Similar to ADV601LC
–25°C to +85°C
35°C/W
5°C/W
Hardware
Yes
Yes
Yes
Yes
CCTVPIPE
Industrial CCTV
REV. 0
–3–


3Pages


ADV611 電子部品, 半導体
ADV611/ADV612
Figure 6. Unfiltered Original Image (Analog Devices Corporate Offices, Norwood, Massachusetts)
Figure 7. Modified Mallat Diagram of Image
–6–
REV. 0

6 Page



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共有リンク

Link :


部品番号部品説明メーカ
ADV611

Closed Circuit TV Digital Video Codec

Analog Devices
Analog Devices
ADV612

Closed Circuit TV Digital Video Codec

Analog Devices
Analog Devices


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