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Headend cherrypicker with digital video recording capability

  • US 20020019984A1
  • Filed: 07/03/2001
  • Published: 02/14/2002
  • Est. Priority Date: 01/14/2000
  • Status: Abandoned Application
First Claim
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1. A headend cherrypicker that implements TIVO functions, comprising:

  • a packet switch;

    a plurality of video servers and satellite feed servers coupled to supply MPEG packets encoding a plurality of video programs;

    a hard disk array storing MPEG packet video data encoding TIVO-like function menus and for storing MPEG packet video data to record programs for which a customer has requested recording;

    an IP wrapper circuit functioning to receive said MPEG packets from said plurality of video servers and said hard disk array and encapsulate them in IP multicast packets and encapsulate the IP multicast packets in local area network (LAN) packets having station addresses that correspond to said program identifier data and supplying said LAN packets to said switch;

    a cable modem termination system and cable modem for coupling to a hybrid fiber coaxial cable transmission medium (HFC) for transmitting iData and command and control data downstream to customers and for receiving commands from each customer to order video programs including recorded programs or TIVO menus and to control TIVO functions performed for that customer;

    one or more network cherrypickers and transmitter combinations coupled to said switch, each said transmitter coupled to said HFC for transmitting said requested programs, recorded programs or TIVO menus to one or more customers;

    a system control computer programmed to exchange data with said switch and control routing by said switch to receive upstream requests for video programs and TIVO function commands and assign one or more logical channels on said HFC to each requested video program, recorded program or menu and to route data encoding requested video programs from one or more of said video servers and recorded programs or TIVO function menus from said hard disk array to one or more network cherrypicker and transmitter combination for transmission to the customer that requested the data, and to route a downstream message to said cable modem to said customer telling the customer on which logical channel the requested data will be arriving and for routing data encoding video programs to be recorded to said hard disk array.

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