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How to Recover Deleted Photos from Memory Card?
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張貼於: 2012/3/6 10:41
How to Recover Deleted Photos from Memory Card?
“Uh oh, no, no,” While trying to delete one unsatisfied photo in your digital camera’s memory card, you had accidently chosen “Delete All” and all photos including photos from trip, family union, birthday party, etc. are missing. Isn’t the scenario familiar? Are there any choices to recover deleted photos from memory card?
Memory cards used in digital camera these days are SD, CF, XD Picture Card, MMC, Memory Stick, etc. and they have the same feature: When you delete pictures from your digital cameras, photos are not deleted permanently, instead they just mark the space that the images had been stored on as being free for use.If no other write or format command is used in that space, it is possible to recover deleted pictures from memory card.
If that scenario happened, first thing to do is stop using the memory card in case that the existed data was overwritten (If you are on vocation, I advice you take out of the memory card and put it in a safe place)To recover lost images, you have to connect the camera to computer. If the camera can’t be detected by computer, a memory card reader is needed. When your camera was detected by computer as a drive letter in “My Computer”, download Card Data Recovery to scan memory card.
Card Data Recovery is a professional memory card data recovery software that can recover lost or deleted photos, videos, audio from memory cards including SD, MiniSD, MicroSD, CF, MMC, XD Picture Card, etc. The program features a very easy to use interface. Only three steps, you can get back your lost photos.
Step1. Launch Card Data Recovery, choose digital camera drive and click “scan”
Step2. Specify photos you want to recover. (Card Data Recovery allows you to preview deleted photos before recovery)
Step3. Click “Recover” to start recovery.
張貼於: 2012/3/29 16:04
Re: How to Recover Deleted Photos from Memory Card?
CWDM SFP use the SFP interface to connect the equipment and use dual LC PC fiber connector interface to connect the optical network. Typical cwdm sfp include CWDM SFP 1470, CWDM SFP 1490,CWDM SFP 1510,CWDM SFP 1530,CWDM SFP 1550, CWDM SFP 1570, CWDM SFP 1590,CWDM SFP 1610. These CWDM SFP are fully compatible with IEEE 802.3z for 1000Base-X standards and compatible with Fiber Channel Draft Physical Interface Specification.
GLC BX D and GLC BX U are used in pairs, these BIDI SFP transceiver module use 1310nm and 1490nm wavelength via single fiber link, they are Gigabit rate SFP. The GLC FE 100BX U and GLC FE 100BX D are 100Base BIDI SFP, they use 1310nm and 1550nm working wavelength. Bi-directional (BiDi) Small Form Factor Pluggable (SFP) transceiver module series is specifically designed for the high performance integrated duplex data link over a single optical fiber. These transceiver modules are compliant with the SFP Multisource Agreement (MSA). With the hot pluggability, these modules offer an easy way to be installed into SFP MSA compliant ports at any time without the interruption of the host equipments operating online.
x2 transceiver is the 10G fiber optic transceiver, its development was based on former Xenpak standards, X2 10gb transceiver inner function is almost similar with Xenpak, and X2 also can use one transceiver to fulfill all 10G Ethernet optical port function. X2 transceiver is about half size of Xenpak, this enable it suit for density installations.
1000Base T SFP refers to the small form hot swappable fiber optic transceiver that complies with 1000Base-T standards. 1000base-t transceiver is copper SFP transceivers and they use category 5 cables for linking and with a very limited working span. 1000Base T SFP are the SFP transceivers used for Gigabit Ethernet and they work under IEEE 802.3 standards. Typical 1000Base T SFP include Cisco GLC T and SFP GE T.
DWDM SFP is used in DWDM SONET/SDH, Gigabit Ethernet and Fibre Channel applications. dwdm sfp support operation at 100Ghz channel and fully compliant to SFF-8472 MSA. the transmission part of the transceiver adopt a cold DFB laser; the receiver part use a APD photo diode integrated with a TIA, working temperature of this the DWDM SFP range from -5ºC to 70ºC, low power dissipation at less than 1.3W max.
The small form-factor pluggable (SFP) is a compact, hot-pluggable transceiver used for both telecommunication and data communications applications. sfp transceiver can be regarded as the upgrade version GBIC, unlike GBIC with SC fiber optic interfaces is with LC interface and the main body size of SFP is only about half of GBIC, which makes SFP space saving, and it interfaces a network device mother board (for a router, switch, media converter or similar device) to a fiber optic or copper networking cable. It is a popular industry format supported by many network component vendors. SFP transceivers module are designed to support SONET, Gigabit Ethernet, Fibre Channel, and other communications standards.
GBIC is short for gigabit interface converter, it is a input/output transceiver used with one end to plug into a gigabit Ethernet port such as on the switches, the other end of the transceiver is to connect the fiber optic patch cords and link the fiber optic networks, thus gbic transceiver function is to transform the signals between the Ethernet network and fiber optic network. GBIC classification is based on its working wavelength, data transmitting rate, working power, and the working distance. Generally GBIC fiber optic end the interface is SC type, the laser unit in GBIC module can be 850nm VCSEL, 1310nm FP, 1310nm DFB, and 1550nm DFB.
The enhanced small form-factor pluggable (SFP+) is an enhanced version of the SFP, in that it supports data rates up to 10 Gbit/s. The SFP+ was first published on May 9, 2006, and version 4.1 published on July 6, 2009. sfp plus transceiver supports 8 Gbit/s Fibre Channel, 10 Gigabit Ethernet and Optical Transport Network standard OTU2. It is a popular industry format supported by many network component vendors.
XFP modules are hot-swappable and protocol-independent. They typically operate at optical wavelengths (colors) of 850 nm, 1310 nm or 1550 nm. Principal applications include 10 Gigabit Ethernet, 10 Gbit/s Fibre Channel, Synchronous optical networking (SONET) at OC-192 rates, Synchronous optical networking STM-64, 10 Gbit/s Optical Transport Network (OTN) OTU-2, and parallel optics links. xfp transceiver can operate over a single wavelength or use dense wavelength-division multiplexing techniques. They include digital diagnostics that provide management that were added to the SFF-8472 standard. XFP modules use an LC fiber connector type to achieve high density.
A XENPAK is a 10G optical fiber transceiver which supports a variety of physical interfaces, including single mode fiber, multi mode fiber and CX4 Infiniband copper cables. The XENPAK standard is defined in the Multisource Agreement (MSA), which defines a fiber optic or copper transceiver module conforming to the IEEE 802.3ae 10GbE (10 Gigabit Ethernet) standard.
XENPAK transmission distances range from 100 metres to 80 kilometres for fiber. xenpak transceiver support transmission distances of up to 15 metres on CX4 cable. Recently introduced XENPAK transceivers supporting the 10GBase-LX4 standard utilize multiple wavelengths on legacy multi mode fiber at distances of up to 300 metres. This can eliminate the need to install new cabling in a building or facility when upgrading certain 1 Gbit/s circuits to 10 Gbit/s.
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