Product Information :  Panasonic SC-XH170

AM: AM radio is radio broadcasting using amplitude modulation. This was the dominant system of radio in the first two thirds of the 20th century, and it remains important into the 21st.Because of the inferior sound quality of AM broadcasting, the medium lends itself particularly to talk radio, while music radio has in recent decades tended to be broadcast using FM.AM radio technology is simpler than other types of radio, such as FM radio and DAB. An AM receiver detects the power of the radio wave and amplifies changes in the power measurement to drive a speaker or earphones. The earliest crystal radio receivers used this principle. FM: FM radio is a broadcast technology invented by Edwin Howard Armstrong that uses frequency modulation to provide high-fidelity broadcast radio sound.DAB Digital Audio Broadcast or DAB is a standard for digital radio broadcast developed by EUREKA as a research project for the European Union. (Project number EU147.) The technology was mainly developed in the 1980s, although the project started in the year 1987 and ended in 2000. Over 285 million people around the world can receive more than 550 different DAB services. The United Kingdom was the first country to receive a wide range of radio stations via DAB, with over 50 commercial and BBC services available in London in 2001.The DAB Forum represents more than 30 countries. The United States is not among them and uses IBOC to deliver digital radio.DAB uses the Eureka 147 protocol based on orthogonal frequency division modulation for transmitting digital data over a lossy radio channel.DAB broadcasts use the MP2 audio coding technique, a close relative of the popular MP3 format, which was also created as part of the EU147 project.DAB has the advantage that stations do not have be re-tuned as you move from area to area, such as in a car. Also, you can receive "radiotext" (in DAB terminology, Dynamic Label Segment, or DLS) from the station giving information such as song titles or traffic updates.Problems with the name Digital occurred with radios, as "digital" can be associated with a digital method of tuning, which is commonly found on analogue radios with LCD displays, rather than a digital signal. RDS: Radio Data System, or RDS, is a standard for sending small amounts of digital information using conventional FM radio broadcasts. The RDS system standardizes several types of information transmitted, including time and station identification. RDS is widely used in Europe, but less so in North America.Radio Broadcast Data System is the official name used for the U.S. version of RDS, though the "RDS" name seems to be at least as common in usage. The two standards are nearly identical, with only slight differences, mainly in which numbers are assigned to each of 31 musical and other program formats the RBDS system can identify. RBDS was approved by the NRSC, RDS by the EBU.

Dolby TrueHD: Dolby® TrueHD is the only audio format that delivers true high-definition sound, providing up to 7.1 channels of pristine, lossless audio 100 percent of the time. Dolby TrueHD will be found on HD DVD and Blu-ray Disc players and software, as well as in future A/V receivers and downloadable media.Dolby Digital: Dolby Digital brings the cinema experience home, delivering up to 5.1 channels of surround sound audio. Dolby Digital is the multichannel audio standard for DVD-Video, HDTV, digital cable, and direct broadcast satellite (DBS) systems.Dolby Digital Plus Dolby Digital Plus is the next-generation audio format that delivers "better-than-DVD" sound in high-definition packaged media because it requires less compression and provides more channels (up to 7.1). Dolby Digital Plus also provides new coding efficiencies for future broadcasting and streaming of multichannel audio.Dolby Digital EX: Dolby Digital EX creates a more intense surround sound experience by adding a sixth channel (Center Back) for enhanced localization of surround effects. It's optimized for Dolby Digital Surround EX™ content.Dolby Pro Logic: Dolby Pro Logic decodes Dolby Surround movie content into four playback channels of surround sound: Left, Center, Right, and Surround.Dolby Pro Logic II Dolby Pro Logic II transforms any stereo signal into five-channel, full-range surround sound. It’s found in the Apple® iPod®, in MP3 and CD playback, in VHS movies, in laser discs, and in stereo broadcasts.Dolby Pro Logic IIx Dolby Pro Logic IIx transforms any stereo or 5.1-channel signal into six- or seven-channel, full-range surround sound. This technology is featured in iPods, MP3 and CD playback, DVD-Video, VHS movies, laser discs, and stereo and surround broadcasts.

HDMI (High-Definition Multimedia Interface) is the first and only industry-supported, uncompressed, all-digital audio/video interface. By delivering crystal-clear, all-digital audio and video via a single cable, HDMI dramatically simplifies cabling and helps provide consumers with the highest-quality home theater experience. HDMI provides an interface between any audio/video source, such as a set-top box, DVD player, or A/V receiver and an audio and/or video monitor, such as a digital television (DTV), over a single cable. HDMI supports standard, enhanced, or high-definition video, plus multi-channel digital audio on a single cable. It transmits all ATSC HDTV standards and supports 8-channel, 192kHz, uncompressed digital audio and all currently-available compressed formats (such as Dolby Digital and DTS), HDMI 1.3 adds additional support for new lossless digital audio formats Dolby TrueHD and DTS-HD with bandwidth to spare to accommodate future enhancements and requirements.

What disc type system does this product support. DVD and Blu-Ray are common standards.