PC Panasonic Corp.

At NAB 2010, booth #SU7213, Harmonic Inc. (NASDAQ: HLIT) will feature a 3D television demonstration in conjunction with DIRECTV and Panasonic. Harmonic's Electra® encoders, capable of supporting frame-compatible 3D video, serve as the compression engine for the DIRECTV 3D video experience, viewable on a Panasonic VIERA Full HD 3D TV set.

DIRECTV, in partnership with Panasonic, is the first and only service provider to announce it will provide dedicated 3D channels to its customers, beginning in June 2010. Millions of DIRECTV HD customers will receive a free software upgrade to view, initially, three dedicated 3D channels and ESPN 3D on their 3D television sets.

"DIRECTV is committed to offering consumers the highest quality, most compelling TV experience available," said Romulo Pontual, CTO of DIRECTV. "Harmonic is a trusted solution provider for DIRECTV, with outstanding solutions including the Electra encoders which not only enable us to efficiently deliver excellent quality HD, but also can flexibly support new applications such as 3D."

Last month, Panasonic launched its VIERA 3D televisions in stores and quickly sold out of initial supplies. The VIERA 3D plasma display has native 1080p, 600 Hz capability and comes with liquid crystal glass shutter lens viewing glasses. A 3D Blu-ray Disc Player with Internet Connectable/Wi-Fi capability is also available from Panasonic.

"Panasonic has worked closely with Hollywood over the past several years to develop Full HD 3D technology that can create a high quality immersive viewing experience in the living room," said Eisuke Tsuyuzaki, Chief Technology Officer of Panasonic Corporation of North America. "Consumers are buying Panasonic's award-winning VIERA 3D displays to get an extraordinary HDTV and 3D TV in one future-proof package."

"At Harmonic, we strive to develop high performance solutions that meet the needs of our service provider customers for today and the future," said David Price, Vice President of Business Development and Marketing Communications for Harmonic Inc. "In addition to offering industry-leading video quality and bandwidth efficiency, the Electra platform is designed to support a wide range of video and audio processing capabilities, including 3D."

Harmonic's latest generation Electra 8000 encoder supports SD and HD, MPEG-2 and MPEG-4 AVC (H.264), as well as integrated statistical multiplexing, broadcast quality up/down-conversion and other unique features such as Junger Level Magic™ automatic audio leveling adjustment. Electra 8000's groundbreaking architecture, featuring up to four channels in a single rack unit, significantly reduces operational costs with its high density and power efficiency, and facilitates the launch of new value-added video services such as 3D television.

NAB, the leading industry conference and exhibition in North America, will be held from April 12-15 in Las Vegas. The 3D demonstration with DIRECTV and Panasonic will be featured as part of Harmonic's full range of market-leading video delivery solutions at Harmonic's booth #SU7213.

About DIRECTV DIRECTV (NASDAQ: DTV) is the world's most popular video service delivering state-of-the-art technology, unmatched programming, the most comprehensive sports packages available and industry leading customer service to its more than 25 million customers in the U.S. and Latin America. In the U.S., DIRECTV offers its 18.56 million customers the capacity for more than 200 HD channels in Dolby 5.1 theater-quality sound, access to exclusive sports programming such as NFL SUNDAY TICKET™, award winning technology like its DIRECTV® DVR Scheduler and higher customer satisfaction than the leading cable companies for nine years running. DIRECTV Latin America, through its subsidiaries and affiliated companies in Brazil, Mexico, Argentina, Venezuela, Colombia, and other Latin American countries, leads the pay-TV category in technology, programming and service, delivering an unrivaled digital television experience to 6.5 million customers. DIRECTV sports and entertainment properties include three Regional Sports Networks (Northwest, Rocky Mountain and Pittsburgh) as well as a 65 percent interest in Game Show Network. For the most up-to-date information on DIRECTV, please call 1-800-DIRECTV or visit directv.com.

About Panasonic Based in Secaucus, NJ, Panasonic Corporation of North America markets a broad line of digital and other electronics products for consumer, business and industrial use. The company is the principal North American subsidiary of Panasonic Corporation (NYSE: PC), and the hub of Panasonic's U.S. branding, marketing, sales, service and R&D operations. Panasonic is pledged to practice prudent, sustainable use of the earth's natural resources and protect our environment through the company's Eco Ideas programs. Detailed information about Panasonic's environmental stewardship may be found in its Panasonic Report for Sustainability 2008 (www.panasonic.net/csr/reports) and Environmental Data Book 2008 www.panasonic.net/eco/rpt/. Information about Panasonic and its products is available at www.panasonic.com. Additional company information for journalists is available at www.panasonic.com/pressroom.

About Harmonic Inc. Harmonic Inc. is redefining video delivery with the industry's most powerful solutions for delivering live and on-demand video to TVs, PCs and mobile devices. Harmonic's technical innovation and market leadership enable the company to offer a unique and comprehensive solution portfolio -- including encoding, transcoding, content preparation, stream processing, asset management, edge processing, and delivery. Broadcast, cable, Internet, mobile, satellite and telecom service providers around the world choose Harmonic's IP-based digital video, software, and broadband edge and access solutions. Using these award-winning and industry-leading solutions, operators can reduce costs and differentiate their services by offering consumers a higher quality, personalized multi-screen experience.

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.

This press release may contain forward-looking statements within the meaning of Section 27(A) of the Securities Act of 1933 and Section 21(E) of the Securities Exchange Act of 1934, including statements related to: featuring a 3D television demonstration in conjunction with DIRECTV and Panasonic, DIRECTV's announcement that it will provide dedicated 3D channels and a free software upgrade to its HD customers, and meeting the needs of our service provider customers for today and the future.

Our expectations and beliefs regarding the capabilities of the Electra encoders and their benefits for DIRECTV may not materialize, and actual results could differ materially from those projected. The forward-looking statements contained in this press release are also subject to other risks and uncertainties, including those more fully described in Harmonic's filings with the Securities and Exchange Commission including its recent Reports filed on Form 10-K and Form 10-Q. Harmonic does not undertake to update any forward-looking statements.

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

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CONTACTS: Sarah Lum Media Relations for Harmonic +1.408.543.2392 sarah.lum@harmonicinc.com Michael Newman Investor Relations for Harmonic StreetConnect +1.408.542.2760 hlit@stct.com