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Data output apparatus that locks and unlocks data format

  • US 7,624,201 B2
  • Filed: 02/18/2005
  • Issued: 11/24/2009
  • Est. Priority Date: 02/23/2004
  • Status: Expired due to Fees
First Claim
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1. A data output apparatus comprising:

  • an output terminal, wherein the output terminal is an oPCR (output plug control register) defined by the IEC by the 61883-1 standard;

    a receiving unit that is configured to receive a first command from a first control device, and to receive a second command from a second control device different from the first control device; and

    a control unit that (a) sets the output terminal to a first state where a data format of the output terminal is locked to a data format indicated by the first command and where the output terminal cannot output video data whose data format is different from the data format indicated by the first command, if the receiving unit receives the first command from the first control device; and

    (b) sets the output terminal to a second state where the data format of the output terminal is not locked to the data format indicated by the first command and where the output terminal can output video data whose data format is different from the data format indicated by the first command, if the receiving unit receives the second command from the second control device while the data format of the output terminal is locked to the data format indicated by the first command.

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