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                                                                    EXHIBIT 99.1



                           HARMONIC TO ACQUIRE DIVICOM

      - Combination Creates Premier Provider of Open-Systems Solutions for
           Delivering Video, Voice and Data over Broadband Networks -

    SUNNYVALE, CALIF. - OCTOBER 27, 1999- Harmonic Inc. (Nasdaq: HLIT) today
    announced that it has entered into a definitive agreement to acquire the
    Divicom business of C-Cube Microsystems (Nasdaq: CUBE). This combination
    will position Harmonic as a leading supplier of open-systems solutions for
    delivering video, voice and data over a variety of network architectures.

    Based upon Harmonic's closing price of $64.875 on October 26, 1999, the
    value of the transaction would be approximately $1.7 billion. Under the
    terms of the agreement between Harmonic and C-Cube, the transaction will be
    structured as a tax-free exchange of stock. C-Cube shareholders will receive
    0.5427 shares of Harmonic stock for each share of C-Cube. Prior to closing,
    C-Cube will sell or spin out all of the assets and liabilities of its
    semiconductor division, after which Harmonic will acquire Divicom with a
    merger of C-Cube into Harmonic.

    "Harmonic and Divicom are leading providers of open broadband solutions in
    our respective market spaces," said Anthony Ley, Chairman, President and
    Chief Executive Officer of Harmonic. "We believe that the combination of our
    two companies is a major step forward for Harmonic, Divicom and our
    customers."

    "Divicom's strengths in digital video compression and our strengths in
    cutting-edge fiber optics is a logical and exciting combination," continued
    Ley. "Together, we can offer a more complete digital and optical solution
    for cable operators worldwide, as well as expand our penetration into
    telecommunications, satellite, wireless and other emerging markets for
    broadband communications."

    Divicom is a leading developer of high-quality standards-based MPEG-2
    encoding products and systems, and has emerged as the leading provider of
    open solutions for digital video. Headquartered in Milpitas, Calif., Divicom
    has approximately 425 employees and had revenues of $133.8 million and
    operating income of $20.5 million for the nine months ended September 30,
    1999.

    "We see this as an ideal union," said Tom Lookabaugh, Divicom President.
    "Both organizations are technological innovators with common corporate
    cultures and a shared vision of open solutions for digital broadband
    communications. We are looking forward to joining the Harmonic team."

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    COMBINATION ADVANCES HARMONIC'S BROADBAND SOLUTION STRATEGY

    With its METROLink(TM) DWDM system, scalable nodes, TRANsend(TM) platform
    for local digital gateway applications, and CyberStream(TM) system for
    delivering high-speed data over broadband networks, Harmonic's products
    enable a range of interactive services such as high-speed Internet access,
    telephony and video-on-demand.

    The move to combine forces with Divicom further advances Harmonic's
    strategic objective of providing flexible and efficient delivery of video,
    voice and data to a broad range of network operators.

    "We are joining forces with Divicom to provide a standards-based product
    portfolio. This combination will allow two premier broadband equipment
    providers to pool resources to further advance the promise of video, voice
    and data over cable, telco, satellite and wireless networks," said Ley.
    "Going forward, we will leverage each other's technical and market expertise
    to develop new products, technologies and open-system solutions required to
    implement evolving network architectures."

    In the near term, the combination increases Harmonic's role in the emergence
    of digital video services over cable, satellite, telco and wireless
    networks. Long term, the combination increases Harmonic's participation in
    video transmission over emerging IP networks.

    Divicom's worldwide customer base includes BellSouth, CCTV, Cablevision
    Systems, Canal+, DirecTV, EchoStar Communications, ExpressVu, GTE, LIN
    Television, MediaOne, NTL, Optus, Telefonica, Telenor, Telia, ONdigital,
    WGBH and US West.

    "By combining resources, we will further enhance the top-tier support our
    customers have come to expect," said Lookabaugh. "With our joint talent pool
    and synergistic product lines, we will offer network operators turn-key,
    high-quality encoding and transmission solutions."

    The merger is subject to the approval of the stockholders of each company,
    customary closing conditions, including applicable regulatory clearances,
    and the prior disposition of C-Cube's semiconductor business. The
    transaction will be accounted for as a purchase, and the resulting goodwill
    will be amortized over a period of approximately five years. Excluding
    goodwill charges, the combination is expected to be accretive to earnings
    per share in the first year. The closing is anticipated to take place in
    March 2000.

    ABOUT DIVICOM

    Divicom is a leading provider of open solutions for digital television.
    Products include audio/video encoding, data broadcast solutions, network
    management systems, consulting and integration services. Based on the
    MPEG-2, DVB and ATSC international standards, Divicom products enable
    digital video broadcasting over a variety of networks including satellite,
    wireless, fiber and cable. Divicom is a wholly-owned subsidiary of C-Cube
    (Nasdaq: CUBE), and is based in Milpitas, Calif. Divicom can be reached at
    +1.408.944.6700 or at www.divi.com.


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    ABOUT C-CUBE

    C-Cube is the industry leader in the development and delivery of highly
    integrated digital video silicon and systems solutions. C-Cube's
    Semiconductor Division delivers highly integrated digital video silicon and
    systems solutions for the communications and consumer electronics markets,
    including digital set-top boxes, VCD, and DVD. C-Cube's Divicom Division is
    a leader in the deployment of digital video networks. C-Cube is
    headquartered in Milpitas, Calif. with offices in North America, Europe, and
    Asia. Its stock is traded on the Nasdaq under the symbol CUBE. C-Cube can be
    reached at +1.408.490.8000 or www.c-cube.com.

    ABOUT HARMONIC INC.

    Harmonic designs, manufactures and markets digital and fiber optic systems
    that deliver video, voice and data over cable, satellite, telco and wireless
    networks. These advanced solutions enable cable television and other network
    operators to provide a range of interactive broadband services that include
    high-speed Internet access, telephony and video-on-demand.

    Harmonic is headquartered in Sunnyvale, Calif., where it also operates an
    R&D center and a manufacturing facility, and has a sales and support center
    in the U.K. The company also operates its Harmonic Data Systems subsidiary
    and an R&D center in Israel. In addition, the company maintains several
    sales and support centers worldwide. Harmonic is ISO 9001-certified and its
    stock is traded on the Nasdaq stock market under the symbol "HLIT." For more
    information, check the company's website at www.harmonicinc.com.

    This press release contains forward-looking statements, including, but not
    limited to, the anticipated closing date, the accounting and tax treatment
    of the transaction, and the potential benefits of the merger, including the
    expectation of offering a more complete digital and optical solution for
    cable operators and expanded penetration into other markets for broadband
    communications as well as other advancements to Harmonic's broadband
    solution strategy. These forward-looking statements involve a number of
    risks and uncertainties including, but not limited to, the failure of C-Cube
    to sell or spin out its semiconductor division, failure to obtain
    shareholder approval or regulatory consents, potential disruption of
    business arising from customer or employee uncertainty, the accounting and
    tax treatment of the merger transaction, the ability to successfully
    integrate the businesses of Harmonic and Divicom, and the failure to realize
    the potential benefits of the merger, within the meaning of Section 27A of
    the Securities Act of 1933 and Section 21E of the Securities Exchange Act of
    1934. Actual results could differ materially from those projected in the
    forward-looking statements as a result of the risk factors set forth in
    documents that Harmonic files with the SEC, specifically reports on Form
    10-K and 10-Q.

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EDITOR'S NOTE: PRODUCT AND COMPANY NAMES USED HERE ARE TRADEMARKS OR REGISTERED
TRADEMARKS OF THEIR RESPECTIVE COMPANIES.


Contact:                              or
Harmonic Inc. Robin N. Dickson,           Harmonic Inc. Joyce Smaragdis,
Chief Financial Officer, 408/542-2500     Public Relations Manager, 408/542-2692