{
  "$type": "site.standard.document",
  "description": "The discharge lamp lighting device in accordance with the present invention includes a controller configured to perform an abnormality judgment process of judging whether or not abnormality has occurred based on a measured value of a driving voltage defined as an AC voltage applied to a discharge…",
  "path": "/patents/981281",
  "publishedAt": "2013-12-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60Q1/00",
    "PANASONIC CORP [JP]"
  ],
  "textContent": "The discharge lamp lighting device in accordance with the present invention includes a controller configured to perform an abnormality judgment process of judging whether or not abnormality has occurred based on a measured value of a driving voltage defined as an AC voltage applied to a discharge lamp. The controller is configured to, in the abnormality judgment process, judge whether or not an asymmetric state in which the driving voltage lacks symmetry has occurred over a predetermined period. The controller is configured to, upon concluding that the asymmetric state has occurred over the predetermined period, conclude that the abnormality has occurred.",
  "title": "Discharge lamp lighting device, automotive high-intensity discharge lamp lighting device, automotive headlight device, and car"
}