Signal Processing

• Daytime Paper Sessions

• Evening Panel Discussions

• Tutorial

• Trend Charts

1997 ISSCC – SIGNAL PROCESSING

SESSION HIGHLIGHTS

• Disk-Drive Electronics
• Low-Power and Mixed-Signal Processing
• Video and Multimedia Signal Processors

ECONOMIC AND SOCIAL IMPACT

• Longer Battery Life for Multimedia and Consumer Products
• Low-Cost High-Quality Video
• Faster and Higher-Density Hard-Disk Drives

PANEL DISCUSSION

• Multimedia Networking: Wireless, Cable, or Telco?
• Analog or Digital Signal Processing for Disk Drives

TUTORIAL

• Circuit and Technology Trends for Low-Power/High-Performance DSP

Session SA 19

DISK-DRIVE SIGNAL PROCESSING

DRIVERS

• Magnetic Technology Pushes Density and Data Rate
• Lower Power for Portables
• Lower Cost

HIGHLIGHTS

• Emergence of Advanced Channel Algorithms Beyond PRML
  • Turbo PRML and 1,7-EEPRML [19.2]
  • Trellis Coded PRML [19.3]
  • DFE Detector [19.6]
• Analog and Digital Solutions Battling for Superiority

Session TP 6

LOW-POWER AND MIXED-SIGNAL PROCESSORS

DRIVERS

• Longer Battery Life and Lower Weight for Portables
• Low-Cost Wireless and Consumer Products

HIGHLIGHTS

• 1V DSP for Wireless Communications Applications [6.2]
  • Implemented in multiple-threshold CMOS
  • Operates down to 0.6V
  • Power Performance of 0.21mW/MHz
• Long-Battery-Life Hearing-Aid IC [6.4]
  • Operates from a single 0.9V cell dissipating 2mW
  • Uses Infrared Remote Control to Adjust Hearing Aid

OTHER SIGNIFICANT RESULTS

• Low-Power Filter-Design Techniques Using Adaptive Processing
  • Filter-Length Adaptation [6.6]
  • Bitwidth Adaptation [6.2]

Session FP 16

VIDEO AND MULTIMEDIA SIGNAL PROCESSORS

DRIVERS

• Better Quality and Longer Length for Digital Video
• HDTV and Integration Improvements
• Real-Time MPEG Encoding/Decoding

HIGHLIGHTS

• MPEG2 Encoding/Decoding Chips
  • Single-Chip Encoding for Storage [16.1]
  • Low-Power Encoder with Motion Estimation [16.2]
  • Software Encoding of MPEG2 [16.3]
  • HDTV (MUSE) Decoding [16.6]

MOST-SIGNIFICANT RESULTS

• Advanced Disk-Drive Read-Channel Algorithms Extending PRML [19.1, 19.2, 19.3, 19.4]
• Digital Signal Processors Operate down to 0.6V for Low Power [6.2]
• Real-Time MPEG2 Encoding [16.1, 16.2, 16.3, 16.4]
• Low-Cost MPEG2 Decoding for Consumer Products [16.6]

Panel Session TE1

ANALOG VS. DSP FOR DISK DRIVES

APPLICATIONS

• Video and Web Servers
• Portable Multimedia Computing
• High-Performance Desktop and Workstation Storage

CHALLENGES

• Providing High-Speed Access and Storage Requirements for Multimedia Applications
• Meeting High Capacity, Low Cost, and Low Power for Portable Multimedia Computing

CONTROVERSIES

• Are Analog Techniques Adequate for Advanced Detection Schemes?
• Can DSP Keep Up With Speed and Power Demands?
• Will BiCMOS Survive or Lower-Cost CMOS Dominate?
• Will DSP Take Over as Supply Voltages Scale to 3V and Below?
• Can Analog Solutions Provide for the Testability and Algorithmic Flexibility Available With Digital?

Panel Session TE3

MULTIMEDIA NETWORKING:
WIRELESS, CABLE OR TELCO?

APPLICATIONS

• Bringing the Power of High-Speed Internet to the Home
• Video on Demand
• Other Commercial Applications

CHALLENGES

• Develop Inexpensive High-Speed Modem Technology for Existing Transmission Media
• Extension to Wireless Domain

CONTROVERSIES

• Installed Base: Twisted Pairs vs. Coax and Hybrid Fiber/Coax + Standardization Issues
• Data Rates: Symmetrical vs. Asymmetrical
• Modulation Techniques
• Compression vs. Transmission Capacity
• Fixed vs. Variable-Length Packets vs. MPEG Transport System
• mm-Wave vs. RF vs. Optics: Cost and Technology Issues
• Reliability Issues

Tutorial T6

CIRCUIT AND TECHNOLOGY TRENDS FOR LOW-POWER/HIGH-PERFORMANCE DSP

Anantha Chandrakasan

OVERVIEW

• Reduced-swing drivers
• Embedded power supply systems
  • System Architecture: Synchronous vs. Asynchronous
  • High-Efficiency Variable-Voltage DC-DC Converter
  • Averaging Techniques
  • Algorithm Design Considerations
• Low-voltage (<1V) technologies
  • Multiple-Threshold CMOS (MTCMOS)
  • Triple-well Substrate-Biasing Techniques
  • Dual-gate SOI
  • Self Reverse Biasing
  • Dynamic Threshold CMOS

TUTORIAL-SPEAKER BIOGRAPHY

Anantha Chandrakasan, received the PhD in EECS from U.C. Berkeley in 1994,and has been the Analog Devices Career Development Assistant Professor of Electrical Engineering at MIT since Sept., 1994. His interests ultra-low power DSPs, low voltage circuits, wireless systems, and CAD tools. He is co-author of Low-Power Digital CMOS Design.

Hard Disk Drive Trend: Data Rate