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Sensor related Canon Patent Applications
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Sensor related Canon Patent Applications

There was a few sensor patents, and we thought it would be better to summarize them all into one article.

Japan Patent Application 2019-149728

This patent deals with lowering the power required by slope ADC based image sensors.  Essentially the lower amount of power used by the sensor, the less heat generated.  The less heat generated, the less the noise produced.

This may be especially important for IBIS attached sensors because there is less opportunity to sink the heat away from the sensor, because it's floating and moving and not in a fixed position.


Japan Patent Application 2019-149608

This patent deals with how to read a dual pixel AF sensor faster and with higher accuracy and less errors.

Technically to read the pair of photodiodes that make up a pixel, it takes twice as long as it would if the sensor was not a dual pixel AF sensor.

This patent goes into how to reduce the measurement error as the shutter speeds increase and also when the shutter speed is extremely long.



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How to view Japan Patent applications.

Unfortunately, there's no direct way of linking to the patent application (sad!) however, this is the easiest process to view a japan patent or application.

  1. Go to the Japan Patent Office search page.
  2. If it's a patent application (they are usually in the format of Year-Number ie: 2017-011300) then type the patent application number into the second field down from the top where it says publication of patent application. 
  3. Click on search.
  4. Then click on the patent application number link, and there's the patent application!

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