A camera is a device used to capture images, either as still photographs or as sequences of moving images (movies or videos). The term comes from the Latin camera obscura for “dark chamber” for an early mechanism of projecting images where an entire room functioned as a real-time imaging system; the modern camera evolved from the camera obscura.
Cameras may work with the light of the visible spectrum or with other portions of the electromagnetic spectrum. A camera generally consists of an enclosed hollow with an opening (aperture) at one end for light to enter, and a recording or viewing surface for capturing the light at the other end. Most cameras have a lens positioned in front of the camera’s opening to gather the incoming light and focus all or part of the image on the recording surface. The diameter of the aperture is often controlled by a diaphragm mechanism, but some cameras have a fixed-size aperture. Camera Battery
The Dreambox is a Linux-powered DVB satellite, terrestrial and cable digital television decoder (set-top box), produced by German multimedia vendor Dream Multimedia. Its firmware is officially user-upgradable, since it is a Linux-based computer, as opposed to third-party “patching” of alternate receivers. All units support Dream’s own DreamCrypt conditional access (CA) system, with software-emulated CA Modules (CAMs) available for many alternate CA systems. The Dreambox is based on the DBox2 units that were distributed by Kirch Media for its pay-TV services before its bankruptcy; it uses the same Linux-based software originally developed for the DBox2. The built-in Ethernet interface allows networked computers to access the recordings on the internal hard disks on some Dreambox models. It also enables the receiver to store digital copies of DVB transport streams on networked filesystems or broadcast the streams as IPTV to VideoLAN clients. Unlike many PC based PVR systems that use free-to-air type of DVB receiver cards, the built-in conditional access allows receiving and storing encrypted content.
The combination of third-party developers and network connectivity which facilitates card sharing, makes Dreambox use particularly common among enthusiasts and those who intend to obtain services without payment. Third-party software for this purpose is neither officially endorsed nor supported by Dream Multimedia and voids the official warranty; however, unofficial web sites support a very large community of enthusiasts.
In 2007, Dream Multimedia also introduced a non-Linux based Dreambox receiver, the DM100, their sole to date, running on unspecified hardware, but still featuring an Ethernet port and a USB port. [1] The speed of the USB port is not specified, the manufacturer only says it is of “B” type, the one found on peripherals connected to PCs.
The “Pandora’s Battery” as they call it, is just a regular PSP Battery . The battery of a psp has flash memory on it with boot information for the system. When converting the battery for this downgrade procedure, the psp program that you use actually dumps the batteries flash and puts a bin image with official sony firmware 1.50 and some developer code. When you place the converted battery into the psp it boots and runs the developer code and downgrades the psp. At this point, they say that the battery is useless. They have come out with an update that will convert the battery back and thats why they dump the flash first. After the psp is downgraded, if you use the converted “pandora battery” as your power source, it will only run a partial of the 1.50 firmware because of the missing battery flash files. in order to have full 1.50 you must convert your battery back into a normal one.
The reason a PSP running 1.50 or custom firmware is required to create a pandora’s battery is that you have to run some unsigned (i.e. homebrew) programs from the PSP itself to create the battery. Also, a memory stick pro duo is also required. Most people are suggesting to use a 256MB one, as it is the smallest pro duo you can get, plus it’s guaranteed to work on one that small. You can’t create a ‘jigstick’ (that’s what they call the memory stick that works with the battery) out of a 4GB or larger one. A jigstick will work as a normal memory stick, but you have to have a jigstick to use the pandora’s battery. Creating the jigstick is part of the process of creating the battery in the first place, so if you get a spare battery, a 256mb-2gb memory stick pro duo, and have access to a 1.5 or custom firmware PSP, just follow the instructions and you’re set.
On August 22, 2007, Team C+D released the “Pandora’s Battery” that can convert a spare Memory Stick Pro Duo and battery into a “Magic Memory Stick” and a “JigKick Battery”. The Memory Stick and the JigKick battery couple is called “Pandora’s Battery”. The Memory Stick and battery can then be used to downgrade any PSP of any version or to recover from a brick. To convert the Memory Stick and battery another PSP which is able to run 1.50 homebrew is needed. The Memory Stick can also be converted without using a homebrew PSP by using a Pandora’s battery program, such as Pandora Easy GUI. After the downgrade/unbrick service has been completed, the Memory Stick and battery can be restored for normal usage.
A “JigKick Battery” is a battery with the first adress in the EEPROM chip changed to 0xFFFFFFFF. This unlocks the service mode of the PSP and launches the IPL from the Memory Stick (instead of from flash0). A “Magic Memory Stick” consists of a reverse-engineered IPL and a minimal subset of the firmware 1.50 stored on a Memory Stick Pro Duo. This downgrader can downgrade all firmware versions. The original version is incompatible with the PSP Slim & Lite due to the 1.50 IPL being incompatible with PSP Slim & Lite hardware. However, on September 28, 2007, a version that works on both the old style PSP and the Slim & Lite was released. The new debricker is called Despertar del Cementerio, and is also known as the Universal Unbricker, which was developed by Dark_Alex. Instead of installing firmware version 1.50, it installs a custom firmware.(PSP Battery )
The “JigKick” battery can also be created by lifting the fifth pin of the EEPROM on the battery’s mainboard, circled here. This is somewhat dangerous because it disables the EEPROM entirely, and may have side effects such as overheating if pin 5 is shorted to other pins while desoldering.
The battery that is included with the PSP Slim can also be converted into a “Pandora” battery by using the hardware modification method mentioned above.
There is now a method that will enable users of custom firmware above 3.71 M33 which does not automatically have the 1.50 firmware kernel to create a Pandora battery. This method can be found here.
Though Sony advocates against use of any homebrew, representatives have said that the Pandora’s Battery will not physically harm the PSP in any manner, as this is the same method used by Sony when customers send in their bricked PSPs for repair.
SUMMARY: Make your digital camera batteries last longer. Here’s how.
Are you always running out of battery power just before you take that perfect picture with your digital camera? Here are some tips to conserve your batteries when you are out “snapping away”.
1) Turn off your digital camera when not in use. If you are in a situation where you must snap pictures quickly, this may not apply as turning digital cameras on and off take a few seconds, and may cause you to miss a picture-taking opportunity. However, if you are taking a leisurely stroll and can afford a couple of seconds before snapping a still subject, by all means, conserve your digital camera’s energy!
2) Many digital cameras have a regular viewfinder and an LCD viewfinder. While the digital LCD viewfinder has its benefits, it can drain battery power. Turn it off when applicable and use your regular viewfinder for taking pictures.
3) Don’t stop after taking every photo and look at the picture in your digital camera’s playback mode. Granted, you sometimes need to look at photos immediately after shooting them in order to make sure your exposure is correct, the lighting is ok, etc., but doing this does use up your digital camera’s battery power.
4) If you are using MicroDrive media, be forewarned that these miniature hard drives may take up quite more power than Compact Flash cards.
Use these tips and you’ll save some digital camera battery power for when you want to take that perfect picture. But, of course, the best tip to make sure that you don’t run out of power is . . . take some extra charged batteries with you on trips!
Most battery manufacturers recommend to slow charge a new NICAD laptop battery for 24-hours before use. This initial trickle charge helps to redistribute the electrolyte to remedy dry spots on the separator that may appear when the electrolyte gravitates to the bottom of the cell during long storage. A slow charge also helps to bring all the individual cells within a battery pack up to an equal charge level because each cell may have self-discharged to different capacity levels during storage.
Note: Today’s newer NICAD batteries may not this initial charge. Refer to the products documentation for proper charging steps.
LI-ION BATTERIES
(Lithium Ion) fragile technology requiring protector circuit, the Li-ion is used where very high energy density is needed and cost is secondary.
NICAD BATTERIES
(Nickel Cadmium) is a well known and understood battery. The NICAD is used where long life, high discharge rate and economical price are important.
LI-POLYMER
(Lithium Polymer) a potentially lower cost version of the Li-ion under development and has not yet been released to the public.
NIMH BATTERIES
(Nickel -Metal Hydride) provides incremental improvements in capacity over the NICAD at the expense of reduced cycle life and lower load current.
SLA
(Sealed Lead Acid) most economical for larger power applications where weight is of lesser concern.
The following is a listing of the types of batteries found in computers to power the CMOS memory. The most common type of battery is the Coin cell battery (Lithium Battery). The coin cell battery is the size of a dime, as shown below.
Life time of a CMOS battery - The standard lifetime of a CMOS battery is around 10 Years; however, this amount of time can change depending on the use and environment that the computer resides.
Also known as a RTC/NVRAM or CMOS RAM, CMOS is short for Complementary Metal-Oxide Semiconductor. CMOS is an on-board semiconductor chip powered by a CMOS battery inside IBM compatible computers that stores information such as the system time and system settings for your computer. A CMOS is similar to the Apple Macintosh computer’s PRAM.