Glossary
CCTV
noun [ U ]
closed circuit television: a system that sends television signals to some screens and is often used in stores as protection against thieves. Closed-circuit television (CCTV), also known as video surveillance, is the use of video cameras to transmit a signal to a specific place, on a limited set of monitors. It differs from broadcast television in that the signal is not openly transmitted, though it may employ point-to-point, point-to-multipoint (P2MP), or mesh-wired or wireless links. Even though almost all video cameras fit this definition, the term is most often applied to those used for surveillance in areas that require additional security or ongoing monitoring (Videotelephony is seldom called "CCTV".
Example:
- On CCTV He was caught fleeing the scene
- CCTV camera /footage/screen
DVR
noun [ C ]
A digital video recorder (DVR) is an electronic device that records video in a digital format to a disk drive, USB flash drive, SD memory card, SSD, or other local or networked mass storage device. The term includes set-top boxes (STB) with direct-to-disk, portable media players and TV gateways with recording capability, and digital camcorders .Personal computers are often connected to video capture devices and used as DVRs; in such cases, the application software used to record video is an integral part of the DVR. Many DVRs are classified as consumer electronic devices; such devices may alternatively be referred to as personal video recorders (PVRs), particularly in Canada. Similar small devices with built-in (5-inch diagonal) displays and SSD support may be used for professional film or video production, as these recorders often do not have the limitations that built-in recorders in cameras have, offering wider codec support, the removal of recording time limitations and higher bitrates.
Example:
- They offer a wide range of DVR models that cater to different needs and budgets.
- Bosch DVRs are known for their reliability, durability, and scalability.
NVR
noun [ C ]
A network video recorder (NVR) is a specialized computer system that records video to a disk drive, USB flash drive, memory card, or other mass storage device. An NVR itself contains no cameras but connects to them through a network, typically as part of an IP video surveillance system. NVRs typically have embedded operating systems.
As a more flexible and serviceable alternative to NVRs, ordinary computers may be equipped with video management software (VMS).
NVRs differ from digital video recorders (DVRs), as an NVR's input is from a network rather than a direct connection to a video capture card or tuner. Video on a DVR is encoded and processed at the DVR, while video on an NVR is encoded and processed at the camera, and then streamed to the NVR for storage or remote viewing. Additional processing may be done at the NVR, such as further compression or tagging with metadata.
Example:
- DVR and NVR are two different types of devices used for video surveillance and recording.
- Additional processing may be done at the NVR, such as further compression or tagging with metadata.
CPU
noun [ C ]
A central processing unit (CPU), also called a central processor, main processor, or just processor, is the most important processor in a given computer. Its electronic circuitry executes instructions of a computer program, such as arithmetic, logic, controlling, and input/output (I/O) operations. This role contrasts with that of external components, such as main memory and I/O circuitry, and specialized coprocessors such as graphics processing units.
Example:
- When editing video, it's important to have a CPU with multiple cores to speed up the rendering process.
- Optimizing your CPU's performance can make a big difference in the overall speed and responsiveness of your computer.
GPU
noun [ C ]
graphics processing unit (GPU) is a specialized electronic circuit initially designed to accelerate computer graphics and image processing (either on a video card or embedded on motherboards, mobile phones, personal computers, workstations, and game consoles). After their initial design, GPUs were found to be useful for non-graphic calculations involving embarrassingly parallel problems due to their parallel structure. Other non-graphical uses include the training of neural networks and cryptocurrency mining.
Example:
- Many modern laptops come equipped with a dedicated GPU in addition to the integrated graphics provided by the CPU.
- Cloud gaming services rely on powerful GPUs in their data centers to stream high-quality games to users with low-end devices.
FPS
noun [ C ]
Frames per Secon: The number of individual frames or images captured by a camera per second. Higher FPS results in smoother video playback.
Example:
- Certainly! Here are a few examples of how the term "fps" (frames per second) is used in different contexts:
- The video game runs at a smooth 60 fps, providing a seamless and immersive gaming experience.
FoV
noun [ C ]
Field of View: The area visible to a camera, typically measured in degrees. A wider field of view captures more area but may sacrifice detail, while a narrower field of view provides more detail but covers a smaller area.
Example:
- The wide-angle lens on the camera provides a broad FOV, capturing a larger scene in the frame.
- When driving a car, it's important to have a clear FOV to ensure good visibility and awareness of the surroundings.
PoE
noun [ C ]
Power over Ethernet: A technology that allows both power and data to be transmitted over a single Ethernet cable, commonly used to power IP cameras and other network devices.
Example:
- POE (Path of Exile): In the world of video games, "POE" can refer to Path of Exile, a popular online action role-playing game developed by Grinding Gear Games.
- POE (Poe Dameron): In the Star Wars franchise, "POE" is the name of a character called Poe Dameron, who is a skilled pilot and a central figure in the Resistanc
WDR
Noun
Wide Dynamic Range: A feature that enables cameras to capture clear images in environments with challenging lighting conditions, such as areas with both bright sunlight and deep shadows.
Example:
- In the context of display technology, "WDR" may refer to monitors or screens that feature Wide Dynamic Range capabilities. 4. Automotive Industry