Press Release

Harmonic Honored as Finalist for Four Cable & Satellite International Product of the Year Awards

August 30, 2007
    Market-Leading HD H.264 Encoder, VOD Server and Stream Processing
  Products Shortlisted in Video Processing, Asset Management, Content
               Protection and Interactive TV Categories

SUNNYVALE, Calif--(BUSINESS WIRE)--Aug. 30, 2007--Harmonic Inc. (NASDAQ:HLIT) today announced that four Harmonic products have been selected as finalists for the 2007 Cable & Satellite International Product of the Year Awards. The CSI Awards are one of the most comprehensive and competitive technology awards anywhere in the world, designed to reward technical and product marketing excellence in the cable, satellite, terrestrial broadcasting and telco TV sectors. The winners will be announced at the IBC 2007 exhibition in Amsterdam, The Netherlands, on Monday, September 10.

    Harmonic's shortlisted products are:

    --  Best digital video processing technology - DiviCom(R)
        Electra(TM) 7000 HD MPEG-4 AVC (H.264) encoder

    --  Best workflow/asset management/automation solution -
        StreamLiner(R) 2000 video server

    --  Best content protection technology - ProStream(TM) 1000 with
        ProCipher(TM) technology

    --  Best interactive TV technology - ProStream 2000 H.264 splicer

"Over the past 12 months, Harmonic has introduced a number of new solutions designed for next generation video service delivery," said Jean-Christophe Morizur, Director of Product Marketing at Harmonic Inc. "The CSI Award nominations are an important endorsement of the innovative and high quality design of our products. Customers also recognize the strength of our new product portfolio. The Electra 7000 HD H.264 encoder has been selected and deployed by many of the world's largest telco and satellite operators, while the StreamLiner video server and Armada(R) intelligent asset manager power a wide range of on-demand systems in cable, IPTV and broadband environments worldwide. Our versatile ProStream stream processing family of products is utilized for a variety of applications including scrambling and bulk descrambling, ad insertion, re-encoding, multiplexing, SFN over IP and forward error correction."

The products will be featured in demonstrations at Harmonic's booth #1.361 at IBC 2007 from September 7-11.

About Harmonic Inc.

Harmonic Inc. is a leading provider of versatile and high performance video solutions that enable service providers to efficiently deliver the next generation of broadcast and on-demand services including high definition, video-on-demand, network personal video recording and time-shifted TV. Cable, satellite, broadcast and telecom service providers can increase revenues and lower operational expenditures by using Harmonic's digital video, broadband optical access and software solutions to offer consumers the compelling and personalized viewing experience that is driving the business models of the future.

Harmonic (NASDAQ:HLIT) is headquartered in Sunnyvale, California with R&D, sales and system integration centers worldwide. The Company's customers, including many of the world's largest communications providers, deliver services in virtually every country. Visit www.harmonicinc.com for more information.

EDITOR'S NOTE - Product and company names used herein are trademarks or registered trademarks of their respective owners.


    CONTACT: Harmonic
             Sarah Lum, Media Relations, +1-408-543-2392
             sarah.lum@harmonicinc.com
             or
             StreetConnect
             Michael Newman, +1-408-542-2760
             Investor Relations for Harmonic
             hlit@stct.com

    SOURCE: Harmonic Inc.