em0ter0
11th Mar '07 Sun, 09:53
What is SDHC?
http://img175.imageshack.us/img175/2205/sdhc00sm9.jpghttp://img175.imageshack.us/img175/673/sdhc02vt3.jpg
While Secure Digital (SD) memory cards are physically getting smaller, miniSD and microSD format quickly becoming a popular choice for mobile phones and as you may have already know after years of forcing MMC cards in numerous different formats Nokia has decide to switch to SD card which is good move.
Aberrantly SD cards also comes in few different formats, sizes actually, standard, mini and very popular micro SD cards but unfortunately SD format has one limitation, its capacity which is limited only to 2 GB and 2GB definitely doesn’t sounds very impressive nowadays.
Therefore, to support the higher capacity needs, SD cards are now requiring a different design. At the 2006 International CES, the SD Card Association (SDA) announced their establishment of the SD Specification Version 2.0 for the SDHC (Secure Digital High Capacity); making way for the SDHC to be the next generation SD Card.
Engineered to meet higher memory capacities, the SDHC will meet the higher requirements in a new generation technology, enabling SD cards to reach higher capacities - 4GB-32GB.
New electronic devices that will utilize SDHC memory cards include audio/video and telecommunications gadgets such as digital cameras, camcorders, mobile phones, computers, PDAs, plasma televisions, and many more.
lso the SD Association has created and defined 3 speed classes to help you identify speed and performance capabilities/minimum requirements of SDHC cards and their SDHC host products.
Now the bad part.. . unfortunately, the flagship Nokia phone, famous Nokia N95 comes with support for standard SD format only and therefore we can’t use cards larger than 2 GB.
Mainly its due to a different file system used by the new SDHC cards, they aren't recognizable by legacy SD devices, so its impossible use them in existing devices.
From other hand, considering all above facts it seams that support for larger cards are software related only and theoretically it is possible to get support for larger cards with upcoming firmware version although I’m not sure either. You see, its possible that the part of software code which is responsible for SD cards isn’t affected via the firmware update because it is stored in different chip area.
http://img175.imageshack.us/img175/2205/sdhc00sm9.jpghttp://img175.imageshack.us/img175/673/sdhc02vt3.jpg
While Secure Digital (SD) memory cards are physically getting smaller, miniSD and microSD format quickly becoming a popular choice for mobile phones and as you may have already know after years of forcing MMC cards in numerous different formats Nokia has decide to switch to SD card which is good move.
Aberrantly SD cards also comes in few different formats, sizes actually, standard, mini and very popular micro SD cards but unfortunately SD format has one limitation, its capacity which is limited only to 2 GB and 2GB definitely doesn’t sounds very impressive nowadays.
Therefore, to support the higher capacity needs, SD cards are now requiring a different design. At the 2006 International CES, the SD Card Association (SDA) announced their establishment of the SD Specification Version 2.0 for the SDHC (Secure Digital High Capacity); making way for the SDHC to be the next generation SD Card.
Engineered to meet higher memory capacities, the SDHC will meet the higher requirements in a new generation technology, enabling SD cards to reach higher capacities - 4GB-32GB.
New electronic devices that will utilize SDHC memory cards include audio/video and telecommunications gadgets such as digital cameras, camcorders, mobile phones, computers, PDAs, plasma televisions, and many more.
lso the SD Association has created and defined 3 speed classes to help you identify speed and performance capabilities/minimum requirements of SDHC cards and their SDHC host products.
Now the bad part.. . unfortunately, the flagship Nokia phone, famous Nokia N95 comes with support for standard SD format only and therefore we can’t use cards larger than 2 GB.
Mainly its due to a different file system used by the new SDHC cards, they aren't recognizable by legacy SD devices, so its impossible use them in existing devices.
From other hand, considering all above facts it seams that support for larger cards are software related only and theoretically it is possible to get support for larger cards with upcoming firmware version although I’m not sure either. You see, its possible that the part of software code which is responsible for SD cards isn’t affected via the firmware update because it is stored in different chip area.