{
  "patent_number": "US 5487069",
  "country": "US",
  "title": "CSIRO's High-Frequency Wireless Network Technology",
  "original_title": "Wireless LAN",
  "summary": "This 1996 patent from CSIRO describes a wireless local area network system that can send data reliably using radio waves above 10 GHz, even when signals bounce off walls.",
  "what_it_does": "This patent covers a wireless local area network (LAN) system designed to work even when radio signals bounce around, a common issue in indoor spaces. It uses transceivers, which are devices that can both send and receive signals. These transceivers operate at radio frequencies higher than 10 GHz. The key innovation is how they process data: they break the data into smaller pieces called symbols. The duration of each symbol is made longer than the expected delay caused by bounced signals. This technique, along with methods to improve data reliability like error correction and interleaving data blocks, ensures that data can be transmitted and received accurately despite signal reflections. The system includes hub transceivers that connect to data sources and destinations, and mobile transceivers that connect to computers or other processing devices.",
  "what_it_does_not_cover": [
    "Wireless systems operating at frequencies below 10 GHz",
    "Wireless systems that do not specifically address multipath transmission environments",
    "Methods of transmitting data that do not involve breaking data into symbols longer than expected signal delay times",
    "Wireless systems that do not include data reliability enhancement techniques like Forward Error Correction or interleaving"
  ],
  "filed": "1993-11-23",
  "granted": "1996-01-23",
  "expires": "2013-11-23",
  "status": "expired",
  "holder": "Commonwealth Scientific and Industrial Research Organization CSIRO",
  "holder_url": "https://patentbrief.org/company/commonwealth-scientific-and-industrial-research-organization-csiro",
  "inventors": [
    {
      "name": "Terence M. P. Percival",
      "url": "https://patentbrief.org/inventor/terence-m-p-percival"
    },
    {
      "name": "John F. Deane",
      "url": "https://patentbrief.org/inventor/john-f-deane"
    },
    {
      "name": "Diethelm I. Ostry",
      "url": "https://patentbrief.org/inventor/diethelm-i-ostry"
    },
    {
      "name": "Graham R. Daniels",
      "url": "https://patentbrief.org/inventor/graham-r-daniels"
    },
    {
      "name": "John D. O'Sullivan",
      "url": "https://patentbrief.org/inventor/john-d-osullivan"
    }
  ],
  "times_cited": 120,
  "tags": [
    "telecommunications",
    "consumer_electronics",
    "software"
  ],
  "abstract": "The present invention discloses a wireless LAN, a peer-to-peer wireless LAN, a wireless transceiver and a method of transmitting data, all of which are capable of operating at frequencies in excess of 10 GHz and in multipath transmission environments. This is achieved by a combination of techniques which enable adequate performance in the presence of multipath transmission paths where the reciprocal of the information bit rate of the transmission is short relative to the time delay differences between significant ones of the multipath transmission paths. In the LANs the mobile transceivers are each connected to, and powered by, a corresponding portable electronic device with computational ability.",
  "url": "https://patentbrief.org/patent/us/5487069/wifi-csiro-wireless-lan",
  "markdown_url": "https://patentbrief.org/patent/us/5487069/wifi-csiro-wireless-lan/md",
  "google_patents_url": "https://patents.google.com/patent/US5487069",
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}