Kabel Digital Audio (Optical / SPDIF / Toslink)

A digital optical connection is a fiber-optic connection that is used for transferring digital audio signals (such as PCM, Dolby Digital, and DTS) from a source device, such as CD or DVD player and an AV receiver or Surround Sound Preamp/Processor.

An optical cable (also known as Toslink) transfers an audio signal using a red light beam through plastic fiber optic cable. The signal that travels through the cable must be converted from an electrical to an optical signal in the CD player, then back to an electrical signal in the receiver. Optical cables are not susceptible to RFI or EMI noise because it is light, not electricity that is traveling through the cable. Optical cables are more fragile than a coax cable and cannot be bent too tightly or pinched. The ends of an optical cable use an odd-shaped connector that must be inserted correctly and is not as tightly connected as a coaxial cable with RCA jacks.

Toslink Digital Audio Optical Cables offer high quality digital sound for today's audio and home theater applications. The Toslink Digital Optical Cables use sophisticated mirror polishing techniques to make the clearest end possible resulting in less error and maximum signal transfer.

Digital Audio Optical Products using Toslink today:

PS3
Bluray Player
DVD Player
DVD Audio Player
SA-CD Player
CD Player
D-VHS Player
Game Console
A/V Receiver
Digital Video Recorder
Satellite Receiver (Astro b.yond guna coax)
Digital Cable Box
Computer sound card
Home Theater System
Other A/V equipment with Toslink jack

Apa itu HDMI dan versinya..

HDMI is an acronym for High Definition Multi-Media Interface. The HDMI specification was created by some of the largest consumer electronics manufacturers in the world: Hitachi, Matsushita, Philips, Silicon Image, Sony, Thomson, and Toshiba. HDMI is the latest digital HDTV interconnection standard. The notable differences between HDMI and the earlier HDTV interconnects standards (component video, and DVI) are: -HDMI is all digital unlike analog component video cables -HDMI supports multi-channel audio in addition to digital video. (DVI only supports digital video) - HDMI is more compact in size and carries both audio and video signals therefore eliminate cable clutter. -HDMI incorporates content protection called HDCP ( high definition content protection) What does a HDMI connector look like: HDMI looks similar to a USB cable. The compact size and high integration (carries both audio and video) makes the HDTV installation experience truly "plug and play." Why should I use HDMI: -HDMI is all digital, so picture quality is "perfect" from source to display -HDMI is both a digital audio and video connection. This will minimize cabling in your system -HDMI is rapidly becoming the de facto standard for HDTV connections. How does HDMI transport the digital video:  The video portion of HDMI is carried by 3 separate differential pairs. Each pair transports 1 of 3 uncompressed native digital R,G, B signals from source ( dvd player, set top box) to the sink ( HDTV display). A unique protocol, T.M.D.S.( transmission minimized differential signaling), is used to transport the digital data. Each pixel is represented by 24 bits ( 8 bits each for each of the primary colors). The T.M.D.S. protocol then "calculates" and stuffs 2 extra bits to the video data stream in order to create a digital stream with minimum transitions ( lower EMI, lower interference) and also minimize long strings of '1' and '0' which can cause detection errors.  A fourth differential pair, called the TMDS clock provides the pixel clock for timing the data stream. The maximum TMDS single link pixel clock rate is 165 MHz.  What is the data rate of a single link HDMI connection: The maximum pixel clock rate is 165MHz and each of the 3 TMDS video streams carries 10 bits. Therefore the aggregate data rate is 3 x 10 x 165MHz = 4.96Gbps. How many pins are included in the HDMI connector:  There are 19 individual pins in the HDMI connector. There are 3 pairs of TMDS signals which carry all the digital audio and video signals.  How is the digital Audio signal transported:  The multi-channel audio is time multiplexed into the TMDS data streams. Audio is much lower data rate (192kbps) and the extra time is used to demux the audio signals. 

Versi HDMI (High-Definition Multimedia Interface)

Versi HDMI	1.0	1.1	1.2 1.2a	1.3	1.3a 1.3b 1.3b1 1.3c	1.4
sRGB	Ya	Ya	Ya	Ya	Ya	Ya
YCbCr	Ya	Ya	Ya	Ya	Ya	Ya
LPCM 8 saluran, 192 kHz, keupayaan audio 24 bit	Ya	Ya	Ya	Ya	Ya	Ya
Video dan audio Blu-ray Disc pada leraian sepenuhnya	Ya	Ya	Ya	Ya	Ya	Ya
Kawalan Elektronik Pengguna (CEC)	Ya	Ya	Ya	Ya	Ya	Ya
Sokongan DVD Audio	Tidak	Ya	Ya	Ya	Ya	Ya
Sokongan Super Audio CD (DSD)	Tidak	Tidak	Ya	Ya	Ya	Ya
Deep Color	Tidak	Tidak	Tidak	Ya	Ya	Ya
xvYCC	Tidak	Tidak	Tidak	Ya	Ya	Ya
Auto lip-sync	Tidak	Tidak	Tidak	Ya	Ya	Ya
Keupayaan strim bit Dolby TrueHD	Tidak	Tidak	Tidak	Ya	Ya	Ya
Keupayaan strim bit DTS-HD Master Audio	Tidak	Tidak	Tidak	Ya	Ya	Ya
Updated list of CEC commands	Tidak	Tidak	Tidak	Tidak	Ya	Ya
Saluran Ethernet	Tidak	Tidak	Tidak	Tidak	Tidak	Ya
Saluran Pulangan Audio	Tidak	Tidak	Tidak	Tidak	Tidak	Ya
3D melalui HDMI	Tidak	Tidak	Tidak	Tidak	Tidak	Ya
Sokongan leraian 4k × 2k	Tidak	Tidak	Tidak	Tidak	Tidak	Ya

Versi HDMI	1.0–1.2a	1.3	1.4
Lebar jalur isyarat maksimum (MHz)	165	340	340
Lebar jalur TMDS maksimum (Gbit/s)	4.95	10.2	10.2
Lebar jalur video maksimum (Gbit/s)	3.96	8.16	8.16
Lebar jalur audio maksimum (Mbit/s)	36.86	36.86	36.86
Kedalaman warna maksimum (bit/px)	24	48	48
Leraian maksimum melalui sambungan tunggal pada 24-bit/px	1920×1200p60	2560×1600p75	4096×2160p24
Leraian maksimum melalui sambungan tunggal pada 30-bit/px	N/A	2560×1600p60	4096×2160p24
Leraian maksimum melalui sambungan tunggal pada 36-bit/px	N/A	1920×1200p75	4096×2160p24
Leraian maksimum melalui sambungan tunggal pada 48-bit/px	N/A	1920×1200p60	1920×1200p60

What’s new in the HDMI 1.4 specification?

• HDMI Ethernet Channel
  The HDMI 1.4 specification adds a data channel to the HDMI connection, enabling high-speed, bi-directional communication. Connected devices that include this feature can send and receive data via 100 Mb/sec Ethernet, making them instantly ready for any IP-based application. The HDMI Ethernet Channel allows internet-enabled HDMI devices to share an internet connection via the HDMI link, with no need for a separate Ethernet cable. It also provides the connection platform that will allow HDMI-enabled components to share content between devices.
• Audio Return Channel
  The new specification adds an audio channel that will reduce the number of cables required to deliver audio “upstream” from a TV to an A/V receiver for processing and playback. In cases where a TV features an internal content source, such as a built-in tuner or DVD player, the Audio Return Channel allows the TV to send audio data upstream to the A/V receiver via the HDMI cable, eliminating the need for an extra cable.
• 3D
  The 1.4 version of the specification defines common 3D formats and resolutions for HDMI-enabled devices, enabling 3D gaming and other 3D video applications. The specification standardizes the input/output portion of the home 3D system, facilitating 3D resolutions up to dual-stream 1080p.
• 4K Resolution Support
  The new specification enables HDMI devices to support extremely high HD resolutions, effectively four times the resolution of a 1080p device. Support for 4K allows the HDMI interface to transmit digital content at the same resolution as the state-of-the-art Digital Cinema systems used in many movie theaters.
• Expanded Support For Color Spaces
  HDMI now supports color spaces designed specifically for digital still cameras, enabling more accurate color rendering when viewing digital photos. By supporting sYCC601, Adobe^®RGB, and Adobe^®YCC601, HDMI display devices are capable of displaying more accurate, life-like colors when connected to a digital camera.
• HDMI Micro Connector (Type D)
  The HDMI Micro Connector is a significantly smaller 19-pin HDMI connector supporting up to 1080p resolutions for portable devices such as cell phones, portable media players, and digital cameras. This new connector is approximately 50% smaller than the size of the existing HDMI Mini connector.
• Automotive Connection System (Type E)
  The Automotive Connection System is a cabling specification designed to be used for in-vehicle HD content distribution. The HDMI 1.4 specification provides a solution designed to meet the rigors and environmental issues commonly found in automobiles, such as heat, vibration and noise. Using the Automotive Connection System, car manufacturers now have a viable solution for HD distribution within a vehicle.