![]() In 1994, ITU-R released Recommendation BT.656-2, incorporating a new serial digital interface as defined in EBU Tech.3267 and SMPTE 259M, which uses a 10-bit transmission and NRZI encoding. In 1983, CCIR became the International Telecommunication Union Radio Telecommunication Sector (ITU-R). In fact, the CCIR 656 also includes the EBU Tech.3247 serial digital interface standard proposed by EBU in 1983 and uses 8/9 block coding at a bit rate of 243 Mb / s but only supports 8-bit quantization and is not easy to design stable cheap interface chip. In 1986 CCIR released CCIR 656, based on the EBU Tech.3246 and SMPTE 125 standards, and proposed a parallel interface that transmits CCIR 601 specifications using 11 twisted pair and 25-pin D-type connectors, Some early digital devices used this interface, but because of the short transmission distance, the connection is complicated and other reasons, not suitable for large-scale use. In 1982, the former CCIR issued CCIR 601 on the basis of the institutional proposals of the European Broadcasting Union (EBU) and the American Society of Motion Picture and Television Engineers (SMPTE) at a sampling frequency of 13.5 MHz and 8 Bit quantification and 4: 2: 2 chrominance sub-sampling unify the digital parameters of both 525/60 and 625/50 television scanning systems. Click to learn more about 12G-SDI transceiver.Ģ4G-SDI: also known as UHD-2 or 24G UHD-SDI, defined in SMPTE ST-2083, this standard supports 8k 120p resolution. This is not new, UG has been developed 6G / 12G since 2012, but has not been approved by the standard governing body SMPTE (Society of Motion Picture and Television Engineers) under the SMPTE ST-2082 draft name. It provides four times the bandwidth of HD, carrying 12Gbps, making it ideal for the 4K 60p format. This standard defines several mapping modes for the carriage 2160-line and 1080-line image formats and associated ancillary data into a Single-link 6 Gb/s SDI bit-serial interface.ġ2G-SDI: The 12G-SDI is an SDI standard developed to support higher resolution, frame rate, and color fidelity. This standard also specifies the electrical and physical characteristics of coaxial cables and connectors. Like the HD-SDI standard, the 3G-SDI supports 3G-SDI CRC generation and checking as well as line number insertion and capture.ĦG-SDI: This standard defines a bit-serial data structure, electrical signal and coaxial cable interface for the transport of signals with a total payload of 5.940 Gb/s or 5.940/1.001 Gb/s. These levels are called A, B-DL, and B-DS. 3G-SDI supports several different mapping levels, as described in the SMPTE ST425-1 standard. OPTCORE provides a wide line of HD-SDI SFP transceiver for the special broadcast application.ģG-SDI: This standard is known as the 3 Gb/s interface, but the actual bit rates are 2.97 Gb / s and 2.97 / 1.001 Gb / s. HD-SDI: The standard known as the HD Serial Digital Interface (HD-SDI) is standardized in SMPTE 292M Although this standard is known as the 1.5 Gb / s interface, the bit rates supported by HD-SDI are actually 1.485 Gb / s and 1.485 / 1.001 Gb/s. 601 (part A), at which point the SD-SDI standard was defined, which is today’s SDI. The clock rate was 270 Mb / s when transmitting a 4: 2: 2 level signal from ITU-R BT. In 1994, ITU-R (formerly International Radio Consultative Committee) released Recommendation BT.656-2, incorporating the new serial digital interface defined in EBU Tech.3267 and SMPTE 259M, which uses 10-bit transmission and non- Zero Reverse (NRZI) encoding. SD-SDI is used to transmitting low-resolution PAL compatible video 720 * 576 25fps and uses a clock rate of 27 MHz. SD-SDI: The SD-SDI standard support the 270 Mb/s bit rate. For example, ITU-R BT.656 and SMPTE 259M are defined for broadcast-grade video. SDI: Serial Digital Interface (SDI) is a family of digital video interfaces first standardized by SMPTE (Society of Motion Picture and Television Engineers) in 1989. Below we discuss the difference between the various SDI interface. At the same time, it has also promoted an era of a new digitized video display in both monitoring and radio and television fields. And we have witnessed the development of the video standard with the ultra high definition standard from SD-SDI, HD-SDI to 3G-SDI, 6G-SDI, 12G-SDI and 24G-SDI. ![]() SDI-Serial Digital Interface, widely used in SDI encoders, SDI converters and other equipment, which has been applied to radio and television fields, security monitoring.
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