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Design Rule For Camera File System
Design rule for Camera File system (DCF) is a JEITA specification (number CP-3461) which defines a file system for digital cameras, including the directory structure, file naming method, character set, file format, and metadata format. It is currently the de facto industry standard for digital still cameras. The file format of DCF conforms to the Exif specification, but the DCF specification also allows use of any other file formats. As of 2021 the 2010 version 2.0 of the standard was current. File system In order to guarantee interoperability, DCF specifies the file system for image and sound files to be used on formatted DCF media (like removable or non-removable memory) as FAT12, FAT16, FAT32, or exFAT. Media with a capacity of more than 2 GB must be formatted using FAT32 or exFAT. The DCF standard defines that the " Read Only" file and directory attribute of FAT file systems can be used to protect files or directories from accidental deletion. Other existing attr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japan Electronics And Information Technology Industries Association
The is a Japanese trade organization for the electronics and IT industries. It was formed in 2000 from two earlier organizations, the Electronic Industries Association of Japan and the Japan Electronic Industries Development Association. History In 1979, Minato Communications Association Co., Ltd. has first appeared in Minato, Tokyo, Japan. In 2000, Minato Communications Association Co., Ltd. was Re-branded into Japan Electronics and Information Technology Industries Association. See also * JIS semiconductor designation * Design rule for Camera File system Design rule for Camera File system (DCF) is a JEITA specification (number CP-3461) which defines a file system for digital cameras, including the directory structure, file naming method, character set, file format, and metadata format. It is cu ... * Integrated Services Digital Broadcasting * EIAJ DC coaxial power connector standards External links JEITA Electronics industry in Japan Trade associations based in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Directory (file Systems)
Directory may refer to: * Directory (computing), or folder, a file system structure in which to store computer files * Directory (OpenVMS command) * Directory service, a software application for organizing information about a computer network's users and resources * Directory (political), a system under which a country is ruled by a college of several people who jointly exercise the powers of a head of state or head of government ** French Directory, the government in revolutionary France from 1795 to 1799 * Business directory, a listing of information about suppliers and manufacturers * Telephone directory, a book which allows telephone numbers to be found given the subscriber's name * Web directory, an organized collection of links to websites See also * Director (other) * Directorate (other) Directorate may refer to: Contemporary *Directorates of the Scottish Government * Directorate-General, a type of specialised administrative body in the European Uni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CIFF Specification On File/Directory Organization And File Handling Protocol
In digital photography, the Camera Image File Format (CIFF) file format is a raw image format designed by Canon, and also used as a container format to store metadata in APP0 of JPEG images. Its specification was released on February 12, 1997. The CIFF standard consists of two parts, CIFF Specification on Image Data File (last revision: version 1.0 revision 4, dated 24 December 1997) and CIFF Specification on File/Directory organization and File Handling Protocol (last revision: version 1.0 revision 3, dated 9 February 1998). The format was developed and maintained by Canon with input from the CIFF Forum. The format is no longer used by Canon, having been superseded by the CR2 file format. Digital cameras The CRW format was supported by some earlier Canon digital cameras: * Canon EOS D30 * Canon EOS D60 * Canon EOS 10D * Canon EOS 300D * Canon Powershot Pro1 * Canon Powershots G1-G6 * Canon Powershots S30-S70 Software that supports CRW Besides Canon's ZoomBrowser and Digit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Picture Transfer Protocol
Picture Transfer Protocol (PTP) is a protocol developed by the International Imaging Industry Association to allow the transfer of images from digital cameras to computers and other peripheral devices without the need of additional device drivers. The protocol has been standardized as ISO 15740. It is further standardized for USB by the USB Implementers Forum as the ''still image capture device class''. USB is the default network transport media for PTP devices. USB PTP is a common alternative to the USB mass-storage device class (USB MSC), as a digital camera connection protocol. Some cameras support both modes. Description PTP specifies a way of creating, transferring and manipulating ''objects'' which are typically photographic images such as a JPEG file. While it is common to think of the objects that PTP handle as files, they are abstract entities identified solely by a 32-bit object ID. These objects can however have ''parents'' and ''siblings'' so that a file-system– ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USB Mass Storage Device Class
The USB mass storage device class (also known as USB MSC or UMS) is a set of computing communications protocols, specifically a USB Device Class, defined by the USB Implementers Forum that makes a USB device accessible to a host computing device and enables file transfers between the host and the USB device. To a host, the USB device acts as an external hard drive; the protocol set interfaces with a number of storage devices. Uses Devices connected to computers via this standard include: * External magnetic hard drives * External optical drives, including CD and DVD reader and writer drives * USB flash drives * Solid-state drives * Adapters between standard flash memory cards and USB connections * Digital cameras * Portable media players * Card readers * PDAs * Mobile phones Devices supporting this standard are known as MSC (Mass Storage Class) devices. While MSC is the original abbreviation, UMS (Universal Mass Storage) has also come into common use. Operating system ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intermediate Frequency
In communications and electronic engineering, an intermediate frequency (IF) is a frequency to which a carrier wave is shifted as an intermediate step in transmission or reception. The intermediate frequency is created by mixing the carrier signal with a local oscillator signal in a process called heterodyning, resulting in a signal at the difference or beat frequency. Intermediate frequencies are used in superheterodyne radio receivers, in which an incoming signal is shifted to an IF for amplification before final detection is done. Conversion to an intermediate frequency is useful for several reasons. When several stages of filters are used, they can all be set to a fixed frequency, which makes them easier to build and to tune. Lower frequency transistors generally have higher gains so fewer stages are required. It's easier to make sharply selective filters at lower fixed frequencies. There may be several such stages of intermediate frequency in a superheterodyne receiv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raw Image Format
A camera raw image file contains unprocessed or minimally processed data from the image sensor of either a digital camera, a motion picture film scanner, or other image scanner. Raw files are named so because they are not yet processed and therefore are not ready to be printed, viewed or edited with a bitmap graphics editor. Normally, the image is processed by a raw converter in a wide-gamut internal color space where precise adjustments can be made before conversion to a viewable file format such as JPEG or PNG for storage, printing, or further manipulation. There are dozens of raw formats in use by different manufacturers of digital image capture equipment. Rationale Raw image files are sometimes incorrectly described as "digital negatives", but neither are they negatives nor do the unprocessed files constitute visible images. Rather, the Raw datasets are more like exposed but undeveloped film which can be converted (electronically developed) in a non-destructive mann ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DCF File Structure As Seen Through Nautilus
DCF may refer to: Medical * Data clarification form in clinical trials * Dénomination Commune Française, a formal French generic name for a drug Organizations * Child protective services, called Department of Children and Families in some U.S. states ** Connecticut Department of Children and Families ** Florida Department of Children and Families ** Vermont Department for Children and Families ** Wisconsin Department of Children and Families * DCF Advertising, an American advertising agency * Delaware Community Foundation, a charitable organization * Dominion Car and Foundry, a former Canadian railcar maker * Donors Capital Fund, a Virginia-based donor advised charity Science * Dichlorofluorescein, a fluorescent dye * L-dopachrome isomerase, also called dopachrome conversion factor Technology * DCF77, time signal radio station in Germany. * Design rule for Camera File system, file system specification for digital cameras * Device Configuration File, an element o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nikon D40
The Nikon D40 is Nikon F-mount entry-level digital SLR, announced November 16, 2006 and made until March 2009, when it was succeeded by the Nikon D3000. Compared to its predecessor, the D50, the D40 had several features removed, a few added, and a lower price: US$499.95 ESP as of November 2009 with the 18–55 mm G-II kit lens, positioning it as an entry-level model compared to the D80. The D40x (released March 6, 2007) has a 10-megapixel maximum resolution, up from 6 megapixels of the D40 and D50. The D40 was the first Nikon DSLR without an in-body focus motor. Autofocus requires the use of a lens with an integrated autofocus-motor. Despite being superseded by newer offerings, the Nikon D40 retained some significant advantages. Features The Nikon D40 was less expensive than the Canon EOS 400D (also known as the Rebel XTi in the United States), the Pentax K110D, and the Olympus E-400, and is competitively priced against high-end bridge cameras (the D40 and D40x d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Konica Minolta
is a Japanese multinational corporation, multinational technology company headquartered in Marunouchi, Chiyoda, Tokyo, Chiyoda, Tokyo, with offices in 49 countries worldwide. The company manufactures business and industrial imaging products, including copiers, laser printers, multi-functional peripherals (MFPs) and digital print systems for the production printing market. Konica Minolta's Managed Print Service (MPS) is called Optimised Print Services. The company also makes optical devices, including lenses and LCD film; medical and graphic imaging products, such as X-ray image processing systems, colour proofing systems, and X-ray film; photometers, 3-D digitizers, and other sensing products; and textile printers. It once had camera and photo operations inherited from Konica and Minolta but they were sold in 2006 to Sony, with Sony's Sony α, Alpha series being the successor Single-lens reflex camera, SLR division brand. History Company history Konica Minolta was formed by a m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minolta
was a Japanese manufacturer of cameras, camera accessories, photocopiers, fax machines, and laser printers. Minolta Co., Ltd., which is also known simply as Minolta, was founded in Osaka, Japan, in 1928 as . It made the first integrated autofocus 35 mm SLR camera system. In 1931, the company adopted its final name, an acronym for "Mechanism, Instruments, Optics, and Lenses by Tashima". In 2003, Minolta merged with Konica to form Konica Minolta. On 19 January 2006, Konica Minolta announced that it was leaving the camera and photo business, and that it would sell a portion of its SLR camera business to Sony as part of its move to pull completely out of the business of selling cameras and photographic film. History Milestones *1928: establishes Nichi-Doku Shashinki Shōten ("Japanese-German photo company," the precursor of Minolta Co., Ltd.). *1929: Marketed the company's first camera, the "Nifcarette" (ニフカレッテ). *1937: The Minolta Flex is Japan's seco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
JPEG
JPEG ( ) is a commonly used method of lossy compression for digital images, particularly for those images produced by digital photography. The degree of compression can be adjusted, allowing a selectable tradeoff between storage size and image quality. JPEG typically achieves 10:1 compression with little perceptible loss in image quality. Since its introduction in 1992, JPEG has been the most widely used image compression standard in the world, and the most widely used digital image format, with several billion JPEG images produced every day as of 2015. The term "JPEG" is an acronym for the Joint Photographic Experts Group, which created the standard in 1992. JPEG was largely responsible for the proliferation of digital images and digital photos across the Internet, and later social media. JPEG compression is used in a number of image file formats. JPEG/ Exif is the most common image format used by digital cameras and other photographic image capture devices; along with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
