Audio and video interfaces and connectors

Audio connectors and video connectors are electrical connectors (or optical connectors) - plugs and sockets - for carrying audio signal and video signal. Audio interfaces and video interfaces define physical parameters and interpretation of signals. For digital audio and digital video, this can be thought of as defining the physical layer, data link layer, and most or all of the application layer. For analog audio and analog video these functions are all represented in a single signal specification like NTSC or the direct speaker-driving signal of analog audio. Physical characteristics of the electrical or optical equipment includes the types and numbers of wires required, voltages, frequencies, optical intensity, and the physical design of the connectors. Any data link layer details define how application data is encapsulated (for example for synchronization or error-correction). Application layer details define the actual audio or video format being transmitted, often incorporating a codecs not specific to the interface, such as PCM, MPEG-2, or the DTS Coherent Acoustics codec. In some cases, the application layer is left open; for example, HDMI contains an Ethernet channel for general data transmission. Some types of connectors are used by multiple hardware interfaces; for example, RCA connectors are defined both by the composite video and component video interfaces, but DVI is the only interface that uses the DVI connector. This means that in some cases not all components with physically compatible connectors will actually work together. Some of these connectors, and other types of connectors, are also used at radio frequency (RF) to connect a radio or television receiver to an antenna or to a cable system; RF connector applications are not further described here. Analog A/V connectors often use shielded cables to inhibit radio frequency interference (RFI) and noise. For efficiency and simplicity, the same codec or signal convention is used by the storage medium. For example, VHS tapes can store a magnetic representation of an NTSC signal, and the specification for Blu-ray Discs incorporates PCM, MPEG-2, and DTS. Some playback devices can re-encode audio or video so that the format used for storage does not have to be the same as the format transmitted over the A/V interface (which is helpful if a projector or monitor cannot handle a newer codec). http://bluefield.com.tw/product/instrumental-audio-cable-bf116240470/

3.5mm to 2 RCA Audio 1.8m – BF116240472

 

 

A clock is an instrument to measure, keep, and indicate time. The word clock is derived (via Dutch, Northern French, and Medieval Latin) from the Celtic words clagan and clocca meaning "bell". A silent instrument missing such a striking mechanism has traditionally been known as a timepiece.[1] In general usage today a "clock" refers to any device for measuring and displaying the time. Watches and other timepieces that can be carried on one's person are often distinguished from clocks

LCD DIGITAL CLOCK WITH ALARM – BF 929

• Jumbo liquid crystal display
• Wall mount or desktop display
• Alarm clock
• Calendar for 200 years
• Temperature, date & time display
• User selectable ºC/ºF
• Count up and count down time

Digital LCD  Clock http://bluefield.com.tw/product/bf-786-lcd-digital-islamic-prayer-clock/

Samsung Galaxy Grand Prime

• 5" TFT display Capacitive Multi-Touchscreen
• Internal memory: 8GB, 1GB RAM with Micro SD slot expandable up to 64GB
• 3G/4G H+ HSDPA 850 / 900 / 1900 / 2100 (Single SIM version), International Model, Does NOT have U.S. Warrant
• 8 Megapixel Camera (3264 x 2448 pixels) with Autofocus, LED flash and front-facing 5 Megapixel Camera

Samsung Galaxy S5

• Processor Speed: 2.5 GHz
• OS: Android 4.4.2 (KitKat)
• Display: 5.1-inches
• Camera: 16-MP

Source: Bluefield

Samsung J3 Nova

• 3G/4G LTE/enhanced LTE (GSM)
• 16GB Internal memory
• Android 5.1 Lollipop OS
• 5.0” HD super AMOLED display
• 5MP rear-facing Camera with 2MP front-facing Camera

Samsung Galaxy S6

• 16 MP Rear + 5 MP Front Cameras
• 4K UHD Video Recording
• 16GB ROM/2GB RAM Memory
• 5" HD Super AMOLEDTM Plus Display
• Boost Mobile Service
• AndroidTM 5.0 (Lollipop)
• 13MP Rear-Facing Camera/2MP Front-Facing Camera
• Internal Memory 32GB with 3GB RAM
• GSM / 3G / 4G LTE Capable - Factory Unlocked
• Android