Time division multiplexing

A very fast CPU customized for the calculation of second order sections was used by Neve [Lidbetter, 1983] (in collaboration with the BBC) in 1979. They used a Time Division Multiplex (TDM) parallel data bus with 16 time slots. At each time slot, the channel processor executed 14 microinstructions (at a rate of 100 ns) of a filter... 

Yamaha. Yamaha has designed numerous custom chips to support its commercial line of music boxes. A number of relevant details can be found in Yamaha s patents. The famous DX-7 has two chips the first one was an envelope generator the second one generated the actual samples. The interconnection between these two sections can be found in patents from 1986 and 1988 [Uchiyama and Suzuki, 1986][Uchiyama and Suzuki, 1988], These patents also describes the use of logarithmic numerical representation to reduce or eliminate multiplication and the use of Time Division Multiplexing (TDM) for multivoice computation. The use of logarithmic representation can be seen in the FM equation (equation 5.18). This is calculated from the inside out as follows from a phase angle (On t ... 

Serial Interconnects. Audio serial rates (768 Kilobits/second per channel at 48 Kilo-samples/second) present an opportunity for parallel DSP. By using standard telecommunication time division multiplexing (TDM), it s possible to trunk multiple channels as well as use switching techniques. 

X.-D. Wang, T.J. Cardwell, R.W. Cattrall, R.R Dyson, G.E. Jenkins, Time-division multiplex technique for producing concentration profiles in flow analysis, Anal. Chim. Acta 368 (1998) 105. 

Figure f7-31. Multiplexing, (a) Multiple sources and one detector (b) multiple sources and multiple detectors (c) spatial and time-division multiplexing OTDR with delayed lines. 

Time division multiplexing (TDM), 231 Time estimates, for professional services projects, 1341, 1342... 

While there are other multiplexing/demultiplexing schemes, the two most common are time division multiplexing (TDM) and wavelength division multiplexing (WDM). 

Konig J, Voigt A, Biittner L, Czarske J (2010) Precise micro flow rate measurements by a laser Doppler velocity profile sensor with time division multiplexing. Meas Sci Technol 21, 074005 (9 pp)... 

The details of time division multiplexing are beyond the scope of this article. They are given in another article by Kmetz. 2 xhe motive, as always, is to reduce the number of leads to the display. In the time division case, data is applied to the HR electrodes only half of the time for a given bar graph. 

The dispersion slope of DSF is 0.05 0.06 ps/nm /km. Therefore, the equalizer can compensate the higher-order dispersion of 300-km DSF. Figure 28(c) shows the relative delay time of 300-km DSF cascaded with the equalizer. The positive dispersion slope of the DSF is almost completely compensated by the PLC equalizer. A time-division (200 Gbit/s) multiplexed transmission experiment using a dispersion slope equalizer has been carried out over a 100-km fiber length (Takiguchi, Kawanishi, Takara, Kamatani etal., 1996). The pulse distortion caused by the dispersion slope was almost completely recovered, and the power penalty was improved by more than 4 dB. 

Kawanishi, S., Takara, H., Morioka, T, Kamatani, O., and Saruwatari, M. (1995). 200 Gbit/s, 100 km time-division-multiplexed optical transmission using supercontinuum pulses with prescaled PLL timing extraction and all-optical demultiplexing, Electron. Lett. 31, 816-817. 

Time-Division Multiplexing Popular way to create multiple logical channels from one physical channel by using equally spaced cells. 

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