Harmonic Inc. is an American technology company that develops and markets video routing, server, and storage products for companies that produce, process, and distribute video content for television and the Internet. The Company's products fall into four principal categories; video production products, video server products for playout, video processing products, and cable edge products. Video production products are used to support video editing, post-production, and finishing. Server systems are used to assemble and play out one or more channel systems. Video processing products are used by media companies, broadcasters, telcos, satellite operators, cable operators, and OTT operators to acquire and use different types and sources of video signals. Cable edge products are used by cable operators to deliver customized broadcast or on-demand and data services to their subscribers. Harmonic supplies cable television headend or hub devices that receive digital video or data from the operator network, re-packetizes the video or data into a MPEG transport stream, then digitally modulates the MPEG transport stream onto a downstream RF channel using quadrature amplitude modulation (QAM). Harmonic sells its products to cable, satellite and telco, and broadcast and media companies.