NEC Corp

U.S. Patent No. 8,909,809


This prior art search report presents the mappings of the various elements of claim 1 of U.S. Patent No. 8,909,809 (‘809 Patent), titled “Delivery system, delivery method, server device, program, and client device”, from assignee NEC Corporation, published on 9 December 2014.

This patent discloses a delivery system able to adjust the bit rate of content data transmitted from a server to a client device based on the stored content data that can be reproduced (i.e., “remaining reproduction time”). The server device is able to transmit the content data in one of a plurality of bit rates. The client device receives and stores a portion thereof and reproduces content based on said stored portion. The delivery system acquires the “remaining reproduction time” based on a portion of the stored data and calculates, according to a predetermined procedure, a correction amount for correcting the bit rate based on it. The delivery system changes the bit rate based on the calculated correction amount, and when the bit rate is within a predetermined range, the delivery system calculates a correction amount having a smaller magnitude than a magnitude of the correction amount calculated according to the procedure.

This preliminary search report includes the following:

  • References found from the preliminary search
  • Claims mapping chart
  • Copies of the selected references with highlighted excerpts
  • Search strategies used in conducting the prior art search


This ParolaPRIME™ report is not legal advice. The suggested correspondences between the features disclosed in the patent-at-issue and those disclosed in each reference reflect what Parola Analytics believes are technical similarities between those respective sets of features. Parola Analytics makes no representation concerning any legal status or effect that may arise from documents mentioned in this report, such as the validity of any apparent priority date or the assertability of any document as prior art against a patent. You should independently obtain legal counsel before attempting to rely on any portion of this report in a legal proceeding.

The references presented in this report are only preliminary and do not represent results from an exhaustive search. For the full report, request a quote.

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