{
  "$type": "site.standard.document",
  "description": "This invention relates to a method and apparatus to optimize energy consumption in a mobile phone having a navigation system. More specifically, this invention relates to a navigation-based method and apparatus to efficiently use a smartphone battery to deliver the highest possible location…",
  "path": "/patents/1008935",
  "publishedAt": "2011-10-05T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01C21/3469",
    "ALPINE ELECTRONICS INC [JP]"
  ],
  "textContent": "This invention relates to a method and apparatus to optimize energy consumption in a mobile phone having a navigation system. More specifically, this invention relates to a navigation-based method and apparatus to efficiently use a smartphone battery to deliver the highest possible location accuracy to the driver. In one embodiment, when the driver is travelling from a complex route segment to a less complex route segment, a current location sensor is switched to another location sensor with lower location accuracy which consumes less battery power. In another embodiment, when the driver is travelling from a less complex route segment to a complex route segment, the navigation system continues to use a location sensor with lower accuracy until the navigation system determines that switching to higher accuracy location sensor is necessary to conserve more battery power. The navigation system can determine a best timing to switch according to the driver's familiarity with the route segment or geographical area.",
  "title": "Method and apparatus for efficiently using a battery in a smartphone having a navigation system"
}