{
  "$type": "site.standard.document",
  "description": "In response to an operation of reversing a vehicle, a tilt motor is rotated by a specific amount in a normal direction to tilt a mirror angle to a position that permits a mirror to provide the driver with a view of the area near a rear wheel of the vehicle, while in response to an operation of…",
  "path": "/patents/1092411",
  "publishedAt": "2003-10-22T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60R1/07",
    "MURAKAMI CORP [JP]"
  ],
  "textContent": "In response to an operation of reversing a vehicle, a tilt motor is rotated by a specific amount in a normal direction to tilt a mirror angle to a position that permits a mirror to provide the driver with a view of the area near a rear wheel of the vehicle, while in response to an operation of releasing the reverse gear, the tilt motor is rotated by a specific amount in a reverse direction to restore the tilt angle to a normal position thereof. During the operations, a high-frequency signal generated upon switching a brush of the motor is detected using a pickup coil to determine an amount of rotation of the motor. One and the same pickup coil may be used for detection during both of normal and reverse rotations. A voltage of a battery 3 is stabilized in a motor power stabilizing circuit 10, and supplied via a motor driving circuit 8 to a tilt motor M2. Polarity of the voltage outputted from the motor power stabilizing circuit 10 is fixed. Polarity of the voltage outputted from the motor driving circuit 8 is switchable according to a switching operation of the motor driving circuit 8 based upon a driving direction instruction. The pickup coil L10 is provided between the motor power stabilizing circuit 10 and the motor driving circuit 8.",
  "title": "Vehicle mirror angle controller"
}