{
  "patent_number": "US RE45784",
  "country": "US",
  "title": "How Smartphones Use Flashing Barcodes for Secure Ticketing",
  "original_title": "USRE45784E1 - OFDM signal transmission system, portable terminal and E-commerce system",
  "summary": "A system for mobile devices to display a series of flashing barcodes that a scanner reads, ensuring tickets are only used during specific valid time windows.",
  "what_it_does": "This patent describes a way for a smartphone to turn digital data into a sequence of barcodes that appear on the screen one after another. The phone includes a detector that senses light or signals from an external barcode reader, which tells the phone exactly when to switch to the next barcode in the sequence. This ensures the reader captures all parts of a large data set, like a complex ticket, even if the screen is small. The system also includes a backend server that checks if a ticket is being scanned at the correct time, preventing unauthorized entry if the reservation window has passed.",
  "what_it_does_not_cover": [
    "Does not cover static, single-frame barcodes that do not change based on reader feedback.",
    "Does not cover systems that rely on GPS or location services to validate ticket entry.",
    "Does not cover NFC or Bluetooth-based contactless ticketing methods.",
    "Does not cover the internal hardware design of the barcode scanner itself."
  ],
  "filed": "2013-01-09",
  "granted": "2015-10-27",
  "expires": null,
  "status": "active",
  "holder": "Panasonic Intellectual Property Management Co Ltd",
  "holder_url": "https://patentbrief.org/company/panasonic-intellectual-property-management-co-ltd",
  "inventors": [
    {
      "name": "Sadashi Kageyama",
      "url": "https://patentbrief.org/inventor/sadashi-kageyama"
    },
    {
      "name": "Takao Isogawa",
      "url": "https://patentbrief.org/inventor/takao-isogawa"
    },
    {
      "name": "Seiji Sakashita",
      "url": "https://patentbrief.org/inventor/seiji-sakashita"
    },
    {
      "name": "Kenichiro Hayashi",
      "url": "https://patentbrief.org/inventor/kenichiro-hayashi"
    },
    {
      "name": "Hisashi Takayama",
      "url": "https://patentbrief.org/inventor/hisashi-takayama"
    },
    {
      "name": "Mitsuaki Oshima",
      "url": "https://patentbrief.org/inventor/mitsuaki-oshima"
    }
  ],
  "times_cited": 0,
  "tags": [
    "consumer_electronics",
    "software",
    "ecommerce",
    "telecommunications"
  ],
  "abstract": "A portable terminal includes a receiver, a barcode former configured to form barcodes and a display. The barcode former forms a barcode from the data received by the receiver and the display displays the formed barcode.",
  "url": "https://patentbrief.org/patent/us/RE45784/multi-room-wireless-audio",
  "markdown_url": "https://patentbrief.org/patent/us/RE45784/multi-room-wireless-audio/md",
  "google_patents_url": "https://patents.google.com/patent/USRE45784",
  "relatedPatents": []
}