SDHC cards

जुन 21, 2007 at 11:21 अपराह्न 1 comment

gh_sdc2g6mx_1.jpg
gh_sdc2g6mx_1.jpggh_sdc2g6mx_1.jpgMemory cards getting smaller day by day, different types of cards are now available in the market. Some company  announced their product is fully waterproof and some claimed high capacity, highspeed. Here know more about SDHC (Secure Digital High Capacity) cards.

Concept of SD Memory Card
The SD Memory Card is a groundbreaking new bridge media that’s helping to pave the way for tomorrow’s fully networked society. This tiny, easy-to-use card offers a host of powerful advantages. It links various kinds of digital equipment through its easy connectivity, that supports a host of application formats and does not require the use of a PC. Further, the SD Memory card has the broad interoperability and compatibility needed to ensure that its applications will continue to expand far into the future. Already supported by more than 665* companies around the world, the SD Memory Card is well on its way to becoming the de facto standard memory card for digital connectivity. Soon, the SD Memory Card will provide universal access to an even wider array of multi-media data. The ubiquitous network era is coming, and its key is the SD Memory Card.

What is SDHC?

To support the higher capacity needs, SD cards are now requiring a different design. The new SD 2.0 specifications which supports 4GB and up, is called Secure Digital High Capacity (SDHC). 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. Details on the SD 2.0 specification: http://www.sdcard.org or SanDisk.com/SDHC

Cards address data (read and write) at numerous speeds. Many factors impede this performance. SDHC guarantees a minimum read and write speed necessary to handle recording high quality video and audio. The maximum card speed may vary, but you can always depend on SDHC cards to meet your SDHC host product’s high quality performance requirements.

SDHC Compatibility Information

Because SDHC works differently (supports the new higher capacity cards) this new card format is not backwards compatible with legacy SD format host devices.

 

The SDA speed class rating was developed to identify minimum data transfer and latency requirements for a host application and provide a means for consumers to match those requirements with an appropriately rated SD card.  For example, in the emerging application of real-time video capture (camcorders, camera phones etc), in order to ensure smooth capture and playback of video, the camera buffer RAM must never experience a data over-run or under-run.  This requires that the card communicate certain parameters to the camera and then meet some minimum governing parameters.  An SDA speed class rating of 6 means that the card will be able to transfer (with specifically defined latencies and data allocation units) data in a random fashion without interruption.  Consumers should look at the intended host device to select the correct speed class rating in the card they buy.  Since speed class 6 is currently the highest rating defined by SDA, it doesn’t necessarily mean that a speed class 6 is the fastest card that a consumer can buy for all applications.

By contrast, SanDisk’s minimum performance rating of, for example, 20MB/sec on Extreme III cards states the performance level that those cards will deliver for sequential write and read operations in non-real-time applications such as file transfers between a card and a computer or in digital cameras between the camera’s buffer and the card.  In this case, the statement of performance allows customers to make a relative comparison between cards of differing performance and price points.  SanDisk Extreme III cards are also speed class 6 rated.

Note: 1 megabyte (MB) = 1 million bytes; 1 gigabyte (GB) = 1 billion bytes. Some of the listed capacity is used for formatting and other functions, and thus is not available for data storage. Read more.

img001.gif

Various brand, capacity & types of Memory cards.

.extm3-16gb_straight130.jpgextreme-iv-cf-8gb_130.jpgcf_bgimage.jpg130mmc_mobile1gb.jpggh_sdc2g6mx_2.jpgusdp_2gb_s_130.jpgfuji_xd_typeh_2gb.jpgminisd_2gb_straight130.jpgextiii_mspd_4gb.jpgmspro_4gb_angled130.jpgmicrosdhc_4gb_lg.jpgultra-ii-microsd-1gb_130.jpgbuffalo_1.jpgpanasonic_2.jpg

Entry filed under: Electronics & gadgets, memory cards, technology. Tags: .

Wireless 3D ring mouse Stop to use Cosmetics

१ टिप्पणी Add your own

जवाफ लेख्नुहोस्

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Trackback this post  |  Subscribe to the comments via RSS Feed


नेपालको समय र तापमान

छिमेकिको दैलोमा चिहाउने कि ?

RSS नेपाल प्लस

  • ईटालीको ब्यापारिक मेलामा नेपालीपनि
    इटालीको उत्तरपूर्वी शहर पादोभा संपन्न छ । सुसंस्क्रित छ । यहाँ वार्षिक रुपमा ब्यापारिक मेला लाग्छ । अहिले एशियाली अर्थात तिनको भाषामा ओरिएन्टल मेला लागिरहेको छ । यसको अर्थ एशियाली हस्तकला, संस्क्रिति र ब्यापारिक सामग्रिलाई प्रोत्साहन गर्ने, चिनाउने हो । यसमा थोरै नेपालीले भाग लिएका छन् । एभेरस्ट क्राफ्टका तर्फबाट एन आर एन स्विजरल्याण्डका पूर्व […] […]
    admin

RSS अनलाइन खसखस

  • फिरफिरे, बुद्धिसागरको नयाँ उपन्यास बजारमा आउने तयारी गर्दा कभर फोटो बिवाद
    बुद्धिसागरको नयाँ उपन्यास "फिरफिरे" बजारमा आउने तयारी गर्दा कभर फोटो बिवाद शुरु भएको छ । स्टक फोटोलाइ कभरमा राख्दा चोरिको भएको वा प्रयोगको लागि पुर्ण अधिकार नभएको अनलाइन सोसल मिडियहरुमा शंका गरिएका थिए ।त्यस्ता शंकाहरुको जवाफमा बुद्धिसागरले कसैले मुद्धा हालिदिएमा सृजनात्मक चोरीमा धेरै फाइन तिर्नु पर्ने हुनाले आफुले त्यस्तो जोखिम नउठाउने बताएका छन् […]
    noreply@blogger.com (RB)

RSS हाम्रो ब्लग

  • An error has occurred; the feed is probably down. Try again later.

RSS The road to Nowhere goes everywhere….

  • प्लाष्टिकका झोला:प्रतिबन्ध कि पुनर्प्रशोधन?
    एक महिनाजति पहिलेपोखराबाटप्रकाशितहुनेएउटादैनिकमाछापिएको एउटा समाचारको शीर्षक थियो ‘पोखरामा प्लाष्टिकका झोला तथा गिलास मुक्त नगर घोषणाको तयारी पुन: शुरु’। उक्त समाचारको शिर्षकले मेरो मनमा दुईवटा वैकल्पिक अर्थ सुझाएको थियो। पहिलो, पोखरामा यस्तो घोषणा पहिल्यै गरिसकिएको तर त्यो असफल भएको र यसैले फेरि घोषणा गर्न आवश्यक परेको। दोश्रो, पहिला तयारी गरेर पनि घोषणा गर […]
    Basanta

RSS मेरो बिचार र अभिव्यक्तिको साझा चौतारी

  • के भएको थियो ९० सालको भूकम्पमा ?
    यही वैशाख १२, १३ र २९ का ठूला भूकम्प र त्यस बीचमा गएका सयौं का परकम्प र ‘धक्का’ सँगै नेपालमा घटेका विगतका ठूला भूकम्पको बारेका खोज र कौतूहल पनि बढेको छ । भूकम्प मूलतः प्राकृतिक घटना भएपनि ठूला भूकम्पहरू एउटा “अविस्मरणीय खाटा”का रूपमा देशको इतिहासमा रहन्छन् । अहिलेको विनाशकारी भूकम्पभन्दा अगाडिको कुरा गर्ने हो भने ९० साल अर्थात् सन १९३४ को भूकम्प नै नेपालको ल […]
    Dilip Acharya

मेरो ढुकुटी

अनलाईन कती जना ?

who's online

यो साइट १४ अप्रिल २००७ देखी

Web Page Counter
Free Web Counters

औ पटक हेरी सकिएको छ ।

Calander

जुन 2007
M T W T F S S
« May   Jul »
 123
45678910
11121314151617
18192021222324
252627282930