adv611 Analog Devices, Inc., adv611 Datasheet - Page 3

• Manufacturer Part Number: adv611
• Description: Closed Circuit Tv Digital Video Codec
• Manufacturer: Analog Devices, Inc.

Bits per Component
DSP Serial Port
Package
Pin Assignments
Temperature Range
Field Rate Reduction
Stall Mode
Field Truncation
Field Size Register
Field Bit Polarity Control
Evaluation Board
Target Applications
REV. 0
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
JA
JC
PROGRAMMABLE
QUALITY BOX
Original Video Image
Table II. Differences Between the ADV601, ADV601LC, ADV611 and ADV612
160 PQFP
ADV601
10
Yes
Unique
0 C to +70 C
31 C/W
7.5 C/W
Software
No
No
No
No
VideoLab
Professional
VARIABLE CONTRAST
BACKGROUND
ADV601LC
8
No
120 LQFP
Unique
0 C to +70 C
35 C/W
5 C/W
Software
No
No
No
No
VideoPipe
Consumer
Figure 3.
–3–
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:
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
Image after compression/decompression shown
with different box size and position
ADV611/ADV612
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