UPD61052 NEC, UPD61052 Datasheet - Page 16

• Manufacturer Part Number: UPD61052
• Description: MPEG2 Audio / Video Encoder
• Manufacturer: NEC

2. FEATURE OVERVIEW
2.1
use circuit. NTSC/PAL video format, which is possible of the encoding is as in Table 2-1. NTSC/PAL video format of
the transcoding is under 720 dots by 480/576 line/frame.
2.1.1
with MPEG2 standard MP@ML, SP@ML and the MPEG1 standard. It is encoding in variable bit rate (single path
VBR encoding) or constant bit rate (CBR). The pre analysis supports high quality picture encoding. Encode supports
frame structure.
2.1.2
16
The functions and I/O interfaces are set using firmware.
Supported functions differ depending on firmware.
This LSI can do flexible encoding and transcoding by using the firmware control of internal CPU and an exclusive
It encodes the video that was converted from the 4:2:2 format into the 4:2:0 format in the video input/output unit
• Using the following, only 64 Mbits SDRAM is needed.
• DVD encoding needs equal to 128 Mbits SDRAM area.
• The motion estimation size
• I/P picture period in MP@ML : M ≤ 3
• Dual prime estimate, only at the time of M = 1.
It transcodes the stream of MPEG2 standard MP@ML based. It is possible for the bit rate conversion.
Encoding with locally decoding and/or time base corrector (TBC)
PAL encoding
P picture: ±128 dots (H) by ±64 lines (V)
B picture: ±96 dots (H) by ±48 lines (V), ±64 dots (H) by ±32 lines (V)
Video
Encoding
Transcoding
Yes
Yes
Yes
Yes
Yes
Yes
MPEG2
No
No
No
No
No
Yes
MPEG1
720 dots by 480/576 line/frame
704 dots by 480/576 line/frame
544 dots by 480/576 line/frame
480 dots by 480/576 line/frame
352 dots by 480/576 line/frame
352 dots by 240/288 line/frame
Table 2-1. Video Format
Data Sheet S15082EJ4V0DS
Video format
µ
PD61051, 61052