Canon Patent For Second Row Of Electronic Contacts
Egami (translated) spotted a Canon patent concerning a second row of electronic contacts on the lens mount. The patent suggests the second row of contacts is dedicated to the video signal, avoiding loss of signal strength could be the reason (the video signal needs more power supply).
- Patent Publication No. 2013-21391
- 2013.1.31 Release Date
- 2011.7.7 filing date
- Canon patent
- In addition to the conventional first electronic contact, provided new second electronic contacts
- Contact each other first and second non-overlapping so that
- Corresponding to the new system
- In addition to the video sync signal
- In the serial clock, eliminating the need for transformation of the communication level
- Because the focus of video requires a larger power supply
Juergen
4 months ago |“…..the second row of contacts is dedicated to the video signal, avoiding loss of signal strength could be the reason (the video signal needs more power supply)….”
sorry boy but that makes no sense at all.
the lens does not need to tranfer a video signal over these contacts….
Admin
4 months ago |“the lens does not need to tranfer a video signal over these contacts”
true, but the patent (machine translated) is suggesting it has to do with the video signal.
Dave
4 months ago |It seems samiliar to that upcoming polaroid camera which DOES transfer the video signal from the lens and does have a second row of contacts…..
Dave
4 months ago |Ahhh I think what it means is that the continuous focusing during video draws more power than focusing for still which makes perfect sense.