Wiki - Information on technical terms
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Here you will find all possible explanations for technical terms, which you can find in our shop. In addition, these explanations are automatically displayed in the corresponding terms in the article descriptions when you use the mouse to scroll over the respective term. The terms for which explanations are filed are underlined in a light gray.
3D describes the representation in three-dimensional space for the visualization of spatial objects. Especially in the field of entertainment electronics this type of representation is coming. In order to get 3D into the living room on the television, it requires a device with 3D support. These devices simulate a three-dimensional representation of the image. The spatial perception of man allows this technique. In this case, images which are differently leveled on the retina are composed by the distance between the eyes and form an image with a spatial depth. This allows man to distinguish the difference between foreground and background. The keyword at this point is perspective. A perspective arises when distant objects are proportionally tapered and objects in the foreground get a larger representation. This is just a technique for displaying 3D images. Another type of representation is the representation of stereoscopic images. In this technique, a laterally displaced partial image, which is separated, for example, by 3D spectacles in two signal paths, is displayed to each eye.
The standard DIN 4734-1 specifies the requirements for decorative firefighting. In this context, this refers to bio-ethanol chimneys, which were the determining factor for the introduction of this standard. The standard defines the safety features for fireplaces of this type. This means that everything that has to do with the burning process is subject to certain safety criteria.
720p is the smallest value in the range of the HD range for TV that can be specified. With a resolution of 1280x720 pixels, 720p is far below the resolution of 1080p or 1080i. The p stands for the progressive image transmission, which means that every line of the image is rebuilt. 720 is the number of lines that can be displayed with this format.
1080i is in the range of the HD range for television the highest value, which can be specified, however, of the picture quality is not as fine as 1080p. Displays with this format are always titled with Full HD. With a resolution of 1920x1080 pixels (16: 9 format), 1080i offers the full resolution for a perfect HD image. The i stands for interlaced, which means that with every new image set-up only every second line of the image is rebuilt. 1080 stands for the number of lines that can be displayed with this format.
1080p is the highest value in the HD area for TVs that can be specified. Displays with this format are always titled with Full HD. With a resolution of 1920x1080 pixels (16: 9 format), 1080p provides the full resolution for a perfect HD image. The p stands for the progressive image transmission, which means that every line of the image is rebuilt. 1080 stands for the number of lines that can be displayed with this format.
AC97 stands for Audio Codec '97. This is a standard for the output of audio data, which was developed by Intel in 1997. In general, this architecture is based on on-board sound chips on mainboards.
AM / FM is often used in the area of radio reception. AM describes the amplitude modulation, while FM defines the frequency modulation. The modulation of the amplitude or the frequency is the change in the carrier frequency by the signal to be transmitted so that the corresponding signal can be reproduced on a terminal. The first application of AM or FM can be found in radios. However, even in the case of analogue TV reception, sound signals are transmitted on a separate frequency and are modulated accordingly for playback on the TV set.
In the case of the resolution in connection with the display of images, one speaks of the dimension of the image size for a raster graphic. A resolution is specified in the number of pixels in columns and rows. Thus, a Full HD TV has 1920 columns and 1080 lines. Of course, the corresponding quality of the image to be reproduced is always decisive in the reproduction of an image or a film. If a movie is recorded at a lower resolution, it is not displayed in full resolution. For this problem, many playback devices have the possibility to interpolate the image to be displayed. This means that the terminal displays the image in full resolution and calculates the missing pixels and completes the image accordingly with these dots.
Aux is a signal input, as can be found on almost every audio device. The Aux connection is generally controlled via RCA jacks. These types of inputs are so-called high-level inputs, at which almost any type of terminal can be operated. Possibly. It is sensible not to connect signal sources such as record players, microphones or electric guitars via Aux, since these give a weaker signal voltage and need a sound filtering in order to be operated.
AVI is a video format developed by Microsoft. AVI stands for Audio Video Interleave and refers to the interlacing of audio and video data in a container. The advantage of AVI is that this format is very widespread and can be reproduced by many end devices. Even though AVI is not designed for video compression and does not support menus and chapters, it has established itself and pushed the development of other video formats that are more like the current standard (Matroska, Ogg, MP4, etc).
The balance of radio settings allows the listener to adjust how the sound should be played. This means that the volume between the left and right speakers can be varied.
In a mobile telephone, the tape describes the ability to work on several frequency bands. In Europe, other frequency bands are used, for example, in the USA. For a mobile phone to function abroad, it must have the functionality to function on the respective frequency band.
Bandpass speakers are characterized by a special design. The housings of loudspeakers of this kind basically consist of a closed and a bass reflex housing. Since the loudspeaker has no direct coupling to the sound chamber in this design, the complete sound is emitted through reflex openings. This leads to an increase in the sound level in a certain wavelength range. This increase results from the Helmholtz resonator that is produced in the enclosing housing. This is, in principle, the same effect that arises when you blow into the open neck of a bottle.
The bar is a legally approved unit for printing. This unity is often found in physics and in technology. 1 Bar corresponds approximately to the pressure at which the hydrostatic pressure increases per 10 meters of water depth.
A bass reflex is a construction of loudspeaker cabinets for woofers where the sound is directed to the outside via openings in the housing. These openings are often provided with plastic tubes, which are then called bass reflex tubes. The air, which is directed through these tubes to the outside, forms a resonator (Helmholtz resonator) with the total volume of the housing. This corresponds largely to the blowing of air into a bottle neck.
Bio-ethanol is an ethanol produced only from biomass or biodegradable waste. It is often used in so-called bio-ethanol chimneys. There it is used as a fuel.
The bit indication, which is often e.g. In computers, describes the so-called bus width (see bus), which can be used by the processor (see CPu) to transfer data to the working memory (see RAM). The bus width depends on the number of control lines that the address bus has. The control lines can always transmit two states (0 and 1). The bus width thus describes how many bits (0 or 1) can be transmitted in one pass from the processor. This means that if, for example, 32 bits is addressed, the address bus has 32 lines, thus having 32 bits, and these 32 bits can be transmitted simultaneously. Since each bit can have two states, the width is calculated by means of 2 high bus width and thus the size of the address space is obtained. For a 32-bit system, this formula is: 2hoch32 = 4294967296 Byte = 4194304 KB (kilobytes) = 4096 MB (MegaByte) = 4 GB. This is also the reason why a 32-bit system can only manage 4 GB of memory.
Bluetooth describes a method for data transmission over short distances. It forms the interface between devices, e.g. The mobile phone, the computer, etc. For the connection, a wireless technology is used which enables communication. The use of Bluetooth makes cable connections unnecessary. Frequent use finds this technique with mobile phones and also with computers with Funktastaturen. However, it is also present in the hifi area. Thus, autoradios are often equipped with Bluetooth to connect hands-free to mobile phones.
A bus provides for the transmission of data between several subscribers who all use the same transmission path but are not involved in the transmissions of other subscribers. In general, a data line can be referred to as a bus if it consists of several lines, which run specifically to individual nodes. Bus systems are increasingly integrated into everyday life. Computers, peripherals and even cars are now equipped with bus systems. The probably most famous bus system is the USB bus, which describes the merger of several devices via a USB port.
Bits and bytes are the absolute basic concept in information technology. A bit corresponds to a state of 0 or 1 (true or false). A 0 or 1 can be determined by transmitting a signal or not transmitting a signal. The sequence of several transmissions results in several bits. 8-bits result in one byte. Accordingly (8x1 bit x 1000), the result is one kilobyte (due to the fact that 1 bit is 8 bytes = 1024 bytes = 1 KB). Further multiplied, MB and GB result.
Cat-5 - Cat-6
The cabling of network cables already starts at level 1. Cat-5 and -6 cables are primarily determined by the maximum frequency with which the cables can be operated. For Cat-5 cables, the maximum frequency is 100 Mhz, while for Cat-6 it is 500 Mhz. Based on these values, Cat-5 and -6 cables are primarily suited for use in high-speed network protocols. Cat-5 advanced the development of 100 Mbit networks while Cat-6 is required to transmit 1 gigabit per second.
The term CD stands for Compact Disc. The CD replaced the cassette at the time. This development was foreseen because cassettes were played back in the same way, while CDs could reproduce digitized content. Because of this, the corresponding music title can be called without the forward or rewinding. CDs found their use not only in the music industry, but also in the information technology field. Software was only delivered on CDs instead of on the smaller and slower diskettes. CD blanks in combination with a CD burner gave the end user the possibility to burn data on CDs themselves. The functionality is very simple. On a CD there are surveys and pits, so-called Pits and Lands. For this reason, the states 0 and 1 can be depicted. This corresponds to one bit. Bits multiplied by 8 give 1 byte and are thus the basis for a storage unit on a CD.
Cinch is a colloquial term for a type of connector that is not standardized. The actual name of a RCA connector is RCA-Jack. Cinch connections are generally used in the entertainment electronics for the transmission of audio and video data.
A codec is a type of encoding or decoding of signals. Codecs are required to play certain file formats (such as MP3). The codec provides the necessary encoding information for playback so that the appropriate format can be played.
The term CPu comes from information technology and describes the main processor of a computer. CPU is the abbreviation for Central Processing Unit. The CPU is responsible for calculating all tasks within a computer system. At this point, data is calculated and forwarded to the appropriate locations in the system. Previously, CPUs always consisted of just one computing core. This has a certain frequency, which is calculated from the clock and a multiplier. Nowadays, all current processors have multiple cores, each of which can perform a computing operation. With this development the concept of true multitasking was finally established.
DAB stands for Digital Audio Broadcasting. This is a standard for transmitting digital radio for terrestrial reception.
DB is the abbreviation for decibels and describes a unit of measure for sound power. Thus, volume ratios can be set on a scale.
DECT is the abbreviation for Digital Enhanced Cordless Telecommunication (Digital, Enhanced, Cordless Telecommunications). DECT takes over the data transmission between base station and handset with portable telephones. This standard makes it possible to remove within buildings from the base station about 30-50 meters without losing the connection.
DirectX is a collection of software tools developed by Microsoft for computer-intensive applications, Games. Most of the tools provided are intended for the calculation of 2D and 3D graphics.
Div-X is a video codec, which is now established in the multimedia world. This codec makes it possible to compress video data strongly and still provide good picture quality. In the beginning only on computers, this codec has now found its way into many DVD players, which allow the viewer to reproduce such encoded content on the domestic television.
DVB stands for Digital Video Broadcasting. The letters after the hyphen have the meaning t for terrestrial, Cable for c, satelite for s and s2. DVB is now the standard for the transmission of digital television and radio in Europe, Asia, Africa and Australia.
DVB stands for Digital Video Broadcasting. The letters after the hyphen have the meaning t for terrestrial, Cable for c, satelite for s and s2. DVB is now the standard for the transmission of digital television and radio in Europe, Asia, Africa and Australia....
EPG is the abbreviation for Electronic Program Guide. This is a technique that can display the program on TVs with EPG. The information on the current program is usually provided free of charge by the respective TV stations. With the help of the transmitted data, the viewer can see immediately what is happening there when a program is switched on. running.
An equalizer is a device for changing sound frequencies. Strictly speaking, the device is just a collection of many different filters that filter or play the desired frequencies.
Ethernet is the specification of software and hardware for the realization of a network. The technology of the Ethernet allows the data exchange of data packets between devices of a LAN.
The fader gives the possibility to control the sound of a radio for front and rear. With this setting, you can specify whether it should be louder or quieter at the front or rear.
FAT32 / NTFS
FAT32 and NTFS are file systems. File systems correspond to a table of contents. This is where the contents are located on the hard disk.
Full-HD is the resolution of HDTV-enabled devices. Translated, this means completely dissolving. This is a resolution of 1920x1080 pixels that can be output or recorded.
GBit / MBit
The units gbit and mbit (gigabit and megabit) are used to specify transmission speeds. For example, when you specify download rates on the Internet, these values are very common. This rate is referred to as the data transfer rate.
GPS stands for Global Positioning System. This is a system for position determination. The most important thing for the determination of the position is a navigation satellit, which is located in a geostationary orbit around the earth. With a GPS device, you can determine where you are. This is now used in many areas of everyday life. Navigation devices or even mobile phones are now equipped with GPS.
An ID3 tag is a reserved area at the end of an MP3 file. This area contains information about the respective file. Since MP3 files usually contain music, these ID3 tags are intended to store information about the title. There you can put the artist, album, recording data and many other data around the corresponding song.
IP44 is a so-called protection class, which is often used in lamps. In this context, the characters IP are in contact with one another for a degree of protection of the housing. The following codes 4 and 4 indicate the type of protection. The first 4 stands for protection against the penetration of solid foreign bodies with a diameter & gt; Than 1 mm. The second 4 says that the housing is protected against splashing water.
IP54 is a so-called protection class, which is often used in lamps. In this context, the characters IP are in contact with one another for a degree of protection of the housing. The following indices 5 and 4 indicate the protection against dust and splash water.
IR is the abbreviation for infrared. In the area of entertainment electronics, IR is often told to the customer that the respective device includes a remote control.
JPEG (also jpg) is an image format. This image format has quickly become established due to its ability to compress image data quickly. The compression is generally achieved by performing a data reduction of color information which can not be detected visually.
Karaoke is a technique in which songs are played, but their singing is not. With suitable microphones can be sung to the songs, so that one almost quits the actual interpreter of the respective song.
In the area of audio and hifi, Pawl describes a plug connector, which is used here very frequently and is intended for the transmission of audio signals. This type of connector is available in various diameters. The most common diameter is the 3.5mm jack, which is often used for headphones or microphones.
LAN stands for Local Area Network. This describes the merging of several computers into a network of computers. Connected by radio or cable, all computers located in the LAN can access and exchange data.
LCD, also called Liquid Crystal Display, is a technique for display devices. The principle of such a display is based on liquid crystals, which can be arranged within the display due to electrical voltage in order to display an image.
The abbreviation LED stands for light-emitting diode. This is an electrical component which has the property of illuminating in several colors. In addition, this kind of lighting consumes very little power and is now found in many application areas./div>
The lithium-ion battery found its way into the development of mobile phones. Due to the increasing energy demand of mobile phones, this type of energy storage proved itself. A high energy density makes this type the standard for these applications. In addition, it is thermally stable and has no memory effect.
An LNB (Low Noise Block) is a signal converter that is used on parabolic antennas to convert satellite frequencies so that they can be processed by satellite receivers.
A low-pass filter can be found in power amplifiers. The frequency crossovers incorporated therein consist of corresponding filters, via which frequencies can be filtered out. In the case of a low-pass filter, high frequencies are filtered while low frequencies are passed.
Lux describes the unit of illuminance and the specific light emission. The unit character is lx. This unit can be used to determine the brightness of lamps.
MB / GB / TB
MB, GB and TB stands for megabytes, gigabytes and terrabyte. In addition to bits and bytes, these specifications describe a plurality of bytes. Megabytes equals 10 ^ 6 bytes (1,000,000 bytes), gigabytes 10 ^ 9 bytes (1,000,000,000 bytes), and terra bytes 10 ^ 12 bytes (1,000,000,000,000).
A Mediaplayer is a device or functionality within a device which allows to play various formats (e.g., MP3, Avi files, DivX, etc).
Mhz / Ghz
Mhz and Ghz stand for Megahertz and Gigahertz. These units describe the type of a frequency. These values can be used to determine how fast the frequency is. These values are used in microprocessor technology, radio transmission technology and many other fields.
Midi is the short form for Musical Instrument Digital Interface. This is a data transfer protocol for the transmission of musical control information between electronic instruments. Nowadays, Midi is also used for many other functions.
MMC describes a standard for memory cards. The abbreviation stands for multimedia card. The MMC can accommodate up to 32GB and has a size of 24.0x32.0x1.4mm.
MP3 is a file format for playback of audio data. The format developed at the Fraunhofer Institute has a very high compression and is now the standard for digital audio data. The high compression is achieved, among other things, by removing from the audio data all frequencies which the human ear can not perceive anyway. In addition, so-called ID3 tags can be stored in each MP3 file. These are predefined information about the file according to a fixed format. Since MP3 files are usually music files, the ID3 tags are used to specify the artist, title, and other information related to the song.
MPEG is a standard for video compression in the Volksmund. MPEG is found in the development of the DVD as well as in satellite transmission techniques. The real meaning, however, is Moving Picture Experts Group. This group of about 350 experts is regularly concerned with setting standards for video compression.
Multiangle is a technique introduced with the DVD, with which the film stored on a DVD can be viewed from several viewing angles. For this purpose, the respective scenes are recorded from several perspectives and can be selected in the film accordingly.
MW describes a frequency range which is used to transmit radio programs. This means the middle wave. The range, which is reserved for transmissions on the medium wave, moves between 300 kHz to 3000 Khz.
NiMh is the chemical name for the combination of nickel and cadmium. The constellation of these contents is found in the composition of batteries, which often consist of these components.
NTSC is the abbreviation for National Television Systems Committee. This is an American institution that provided a standard for a color transmission system for analogue TV signals. This standard does not apply in Germany, because the PAL system has been used for the transmission of color information.
Nullmodem cables are used to connect two PCs via a serial interface. This connection is used to enable connected PCs to exchange data.
Ohm is the unit of electrical resistance. This information can be used to determine how much a signal decreases when it is routed through a line. In addition, resistors are installed in electrical circuits which bring the impulse on the line to a desired level. The number of ohms indicates how strong this resistance is.
OSD stands for on-screen display. This is a control panel which can be displayed on a monitor or TV, for example, for configuring the respective device.
PAL is the abbreviation for Phase-Alternation-Line. Contrary to general opinion, PAL describes the type of color transmission on analog TVs. PAL converts the color information of the current image to the TV and ensures error-free transmission of the color information used in the image.
In home use, patch cables are mainly used to connect the home computer to the network box or the Internet router. Patch cables can be either normal copper cables or fiber optic cables.
PCI stands for Peripheral Component Interconnect. This is bus standard over which additional cards can be connected to the PC. PCI slots are actually available in every desktop PC. Common application areas are the installation of additional cards in the PC.
The Kodak Picture CD is a standardized type of CD-ROM that is used for digital archiving of image data. It is often used by hobby photographers.
A pixel is a pixel on a raster graphic or image display device. A pixel can take a certain number of colors. The number of pixels in the grid in the horizontal and vertical gives the resolution of the respective medium.
PLL is the abbreviation for phase-locked loop. This technique is used in radios. Thanks to PLL, the device automatically corrects the signal so that the desired radio transmitter is always available - even if you move into another transmission range.
Contrary to general opinion, the term polyester is used in connection with the family of polymers. Polyester describes the well known microfibers in the field of textiles or nonwovens.
A PS2 port is a serial port for connecting input devices such as a mouse or keyboard. However, this type of connection is now being replaced by the increasing use of USB and can no longer be found on any PC.
RDS is an abbreviation for Radio Data System. With this system radiosender additional information can be transmitted, which are then displayed on the display of the radio. Typically, this information includes the name of the radio operator, but often also the name and / or performer of the currently running music track.
RGB describes the use of the colors red, green and blue. This signal is often found in the VGA port on the computer or on the scart port on the domestic TV.
RJ connections are often used in the world of network technology and telecommunications. RJ45 plugs are always found on patch cables. RJ11 plugs are usually the standard for connections on the phone.
RMS stands for Root Mean Square and is the effective power of a device. Specifically, this means that an average value of the power is determined from frequencies of the entire auditory range.
Scart is a term from the French and means Syndicat of the Constructeurs d'Appareils Radiorécepteurs et Téléviseurs. This describes a European standard for the plug connections of audio and video devices. Even today, nearly every television has a scart connection, via which, for example, Video recorders, DVD players and other devices can be connected.
SD means Secure Digital). This term is used in digital storage media. SD cards are found, for example, in digital cameras. Meanwhile, there are many types of memory cards of this type. The maximum memory capacity also differs for the respective memory cards.
A simlock is the blocking of a mobile service provider on a subsidized mobile phone. Thus, the network operator prevents a customer from using a mobile phone with the card of another operator. As a rule, the simlock is limited to the duration of the contract with which the phone was purchased.
Sub-D describes a type of connector. The outline of this connector is trapezoidal. This design is found, for example, with VGA plugs.
A subwoofer is called a woofer or bassbox. This type of loudspeaker is always used for the reproduction of low-frequency sounds (basses).
S-Video is the abbreviation for seperate video and stands for the transmission of brightness and color information. This technique is used for analogue television data. The plug is a 4-pin mini-DIN plug, which looks very similar to a PS / 2 plug.
A touchscreen is a touch-sensitive display. This kind of technology has now entered the mobile radio scene. Keys have therefore become scarce on the corresponding devices. The respective keys are now displayed on the display and can be triggered by touching with the finger at the respective point.
A transformer is the short form for transformer. A transformer is used to increase or reduce alternating voltages. Such a device is used with any electrical device which operates with a voltage other than the applied voltage.
VHF is for ultracurrency and is used in radio reception. Radio waves, which are in a frequency range from 30 to 300 Mhz, are referred to as FM. The usual use of FM is found in the FM radio, which moves between frequencies of 87.5 to 108 MHz.
USB stands for Universal Serial Bus. This is a bus system that is used to connect computers with external devices. The USB port has now become established everywhere where devices must be connected.
VCD is an abbreviation for Video CD. This is a standard for storing video data on a CD with good utilization of the given memory space. In addition, there is the SVCD standard. The SVCD standard is mainly distinguished by a much better picture quality.
VGA stands for Video Graphics Array. This is an analogue image transfer standard introduced in 1987. The VGA port is now replaced by digital image transmission mechanisms due to too high image resolutions since this image transmission is only conditionally suitable for resolutions of more than 1280x1024. The VGA connector has 15 pins and is called a D-Sub connector.
Vo-IP refers to the transmission of voice data over a network. This technique is nowadays offered as an alternative to a normal telephone connection. In this case, the voice data transmitted during a telephone call is transmitted to the call partner via the Internet.
WEP stands for Wired Equivalent Privacy and describes an algorithm for the encryption of wireless networks. In the meantime, this type of encryption has been replaced as a standard by the WPA encryption because it was not considered safe.
WLAN stands for Wireless Local Area Network. This is a radio transmission standard, over which WLAN-enabled devices can establish a network connection.
The abbreviation WMA stands for Windows Media Audio and is the music favored by Microsoft. It is in competition with the popular MP3 format.
WPA is an encryption technology for wireless networks. Since you do not have to be inside the building, but only within the range of WLAN, you have to enter encryption to prevent strangers entering a WLAN. WPA and WPA2 are currently the most common encryption methods. The abbreviation WPA stands for Wi-Fi Protected Access.
In the world of sound reinforcement technology the XLR plug is found again. The purpose of this type of plugs is often the connection of microphones or loudspeakers. In addition, there are several types of this connector type. However, the connectors differ only in the number of pins.
This is a color model, which is responsible for the analog transmission of color information from digital sources. It is used, for example, when data from a DVD player or a DVB signal must be transmitted analogly.
Inch is a unit for the length. Since the metric system has been introduced, customs are no longer used so frequently. However, due to the sizes of monitors and televisions, this unit is again in use. One inch is 2.55 cm.