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Electro Gyrocator
The Electro Gyro-Cator was claimed to be the world's first automated commercially available automotive navigation system.〔(Honda Worldwide | History )〕〔("20 Years of Car Navigation" (in Japanese) )〕 It was co-developed by Honda, Alpine,〔(Honda Worldwide | History )〕〔(Alpine Electronics, Inc. alpine.com | Corporate Info > Beginnings of Alpine )〕 and Stanley Electric Co.. Unlike most navigation systems of today, it did not use GPS Satellites to maintain its position and discern movement of the vehicle. Rather, it was an Inertial navigation system, because it contained helium gas gyroscope that could detect both rotation and movement. A special servo gear was also attached to the transmission housing to feed information to the Gyro-Cator to help maintain position, map speed and distance traveled.〔(Honda's 1981 Electro Gyrocator: vintage navigation at its finest - Engadget )〕 Transparent maps were placed inside the unit and it would scroll them past a 6" monochrome CRT illuminated screen as the car traveled along. The monitor would indicate by a series of circles (or cross hairs) on the screen to show your current location or display lines for path of travel. A marking pen was also included to help make personal indicators on the map if needed. Adjustments could be made to change the display scale, position, rotation, brightness, and contrast. In its only year of production in 1981, it was announced as an option on that year's Honda Accord and Honda Vigor, but at ¥300,000 ($2,746 USD), it was almost a quarter of the value of the car. It is not clear how many units were actually sold to customers as a "dealer option". A patent for gyroscope design was introduced to the US in design patent D274332.〔(- "CTR Terminal for vehicle navigation" Patent D274332 at Google Patents )〕 Documented weight for the unit was roughly 20 lb (9 kg). A display unit, with a cutaway of the Gyroscope, is currently shown at the Honda Collection Hall at Twin Ring Motegi, Japan.
==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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