Description:

This video codec for Audio-Visual services operating at P*64 Kbits/sec (where P is the number of frames). This is based on the recommendation by ITU-T H.261. The H.261 algorithm operates at P*64 kbps.

Broadly, the picture transmission can be classified into:

1. Picture acquisition and conversion (as per the CCIR Recommendation 601)
2. Encoding (compressing) picture (H.261 recommendation).
3. Transmission of encoded picture (can have different recommendations and one of them could be ISDN).
4. Receiving encoded picture
5. Decoding the encoded picture (H.261 recommendation).
6. Display of the moving pictures. This codec is Multiple instance capable.

Features:

• Full and half duplex mode of operation.
• All the standard test vectors are bit exact verified.
• Capable of operating on single sample or on frames.
• Can operate on multiple instances/channel.
• Compatible with NTSC and PAL systems.
• Supports CIF and QCIF picture.
• Highly optimized code.

Configuration:

• Direct interface to 8 KHz. PCM data stream
• Available with H.324 implementation along with H.245
• Coder selection can occur at run time
• Multiple instances compatible

Typical Applications:

• Multimedia products
• Videoconferencing.
• Digital satellite imaging system
• DCME, ISDN, PSTN.
• Digital leased lines
• HDTV

Metrics:

Processor:     Proprietary DSP core with Super scalar architecture.
Operates at 25 Frames per second (metric includes H.324 and H.261 implementation on the DSP processor).

MIPS	24
DM	30K
PM	25W
Processor Loading	20%

Processor:     ADSP 21060
(metric includes H.324, H.261 and H.245 implementation on ADSP21062).
Operates at 19 frames per second.

MIPS	38
DM	32KW
PM	48KW

  top

Description:

This video codec for Audio-Visual services operating at 64 Kbits/sec. This is based on the recommendation by ITU-T H.263. The H.263 algorithm operates at 64 kbps. H.263+ is an enhancement over H.263 specially on the motion compensation side.

Broadly, the picture transmission can be classified into:

1. Picture acquisition and conversion (as per the CCIR Recommendation 601)
2. Encoding (compressing) picture (H.263 recommendation)
3. Transmission of encoded picture (can have different recommendations and one of them could be ISDN)
4. Receiving encoded picture
5. Decoding the encoded picture (H.263 recommendation)
6. Display of the moving pictures. This codec is multiple instance capable

Features:

• Full and half duplex mode of operation
• All the standard test vectors are bit exact verified
• Capable of operating on single sample or on frames
• Can operate on multiple instances/channel
• Compatible with NTSC and PAL systems
• Supports CIF and QCIF picture and moving pictures
• Highly optimized code

Configurations:

• Direct interface to 8 KHz. PCM data stream
• Available with H.324 implementation along H.245
• Coder selection can occur at run time where many codecs are used
• Multiple instances compatible

Typical Applications:

• Multimedia products
• Video conferencing
• Digital satellite imaging system
• DCME, ISDN, PSTN
• Video transmission on leased lines
• HDTV, DVD

Metrics:

Processor:     Proprietary DSP core with Super scalar architecture
Operates at 27 Frames per second (metric includes H.324 and H.263 implementation on the DSP processor)

MIPS	19
DM	30K
PM	25W
Processor Loading	15%

Processor:     ADSP 21060
(metric includes H.324, H.263 and H.245 implementation on ADSP21062).
Operates at 26 frames per second.

MIPS	32
DM	30KW
PM	44KW

top