Large-screen HDTV (high-definition television) has been widely recognized by consumers, and people are adding various electronic devices to perfect their home theater system. Stand-alone home theater (HTIB), SOUNDBAR speakers and audio-visual receiver (AVR) can provide users with a better audio experience and improve the performance of HDTV video. The ability to extract and process high-fidelity audio signals is a key to selecting hardware on the market today. Home theater systems can now provide all the latest features of a high-definition multimedia interface (HDMI) (seamless integration with equipment).
For system designers of HTIB, SOUNDBAR speakers and AVR, improving the user experience of home theaters means constantly overcoming various implementation challenges. New features have been added to the latest version of the HDMI standard, such as Audio Return Channel (ARC), 3D display format, and improvements to the Consumer Electronics Control (CEC) protocol. Of course, consumers want their new home theater equipment to have all these new HDMI features, and be inexpensive and easy to control. Therefore, designers of home theater equipment must adapt to the new standards while also reducing material costs, development costs, and time to market. To help designers meet these challenges, Analog Devices has introduced HDMI transceiver products that integrate these new features.
Taking the ADV7623 as an example, this HDMI transceiver integrates a 4: 1 HDMI input multiplexer (mux), HDMI receiver, on-screen display (OSD) engine, and HDMI transmitter. Individually, each of the above functions should require separate ICs and a variety of firmware, but a transceiver can combine all functions into a comprehensive solution, saving onboard area, reducing firmware complexity, Reduced material costs and brought great convenience to designers of home theater systems.
Figure 1: Functional block diagram of the HDMI transceiver.
Stand-alone home theater
HTIB is a complete video playback system, generally using multi-channel audio amplifier and surround sound system to play audio. In addition, the system usually includes a DVD or Blu-ray video player. HTIB simplifies the installation and power matching of video players, amplifiers and speakers. It mainly handles audio, and the video is transmitted to the TV through the HDMI interface. Figure 2 shows a typical HTiB system.
Figure 2: Typical HTiB system block diagram.
Ceramic capacitor (ceramic capacitor);Ceramic condenser) is also known as porcelain capacitor or monolithic capacitors.As the name implies, ceramic dielectric vessel is a ceramic capacitor with dielectric material.According to different ceramic materials, this kind of capacitor can be divided into low-frequency porcelain dielectric vessel with capacity of 1-300 pF and high-frequency porcelain dielectric vessel with capacity of 300-22 000 pF.According to the structure type classification, can be divided into picture capacitor, tubular capacitor, rectangular capacitor, chip capacitor, piercing capacitor and so on.
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