Abstract: An artificial cornea and an associated manufacturing method are disclosed. The artificial cornea has two sides, each of which has an associated microstructure. In an embodiment, microlines can be provided on an anterior side, and a posterior side can have micropores. Both the geometry of the microstructures and their dimensions can be customized for an individual patient. The geometry of the artificial cornea itself and its dimensions can also be customized as such. In addition, the lifetime of the artificial cornea can be significantly enhanced by adding co-polymer(s) into the hydrogel to strengthen its mechanical properties. Patient recovery can be aided by adding peptides into the artificial cornea surfaces to improve cell growth post-operation.

Abstract: A digital filter pre-calculates C(1)*S(n?1), C(2)*S(n?2) . . . C(p?1)*S(n?p+1), prior to the arrival of sample S(n). As such y ? ( n ) = ? k = 0 k = p - 1 ? C ? ( k ) * S ? ( n - k ) may be calculated as a result of a single further multiply and accumulate operation, upon arrival of the symbol S(n). This, significantly reduces the latency of the filter.

Abstract: A digital receiver, that may be used to receive VSB/QAM digital television signals, includes an adaptive fine carrier recovery circuit that compensates for deviations in the carrier frequency or phase. The carrier recovery circuit de-rotates a signal including phase errors. Estimations of phase errors are filtered using a filter whose gain and bandwidth are adjusted adaptively. This allows the carrier recovery circuit to track phase/frequency offset without introducing significant jitter. In one embodiment, the receiver includes a DFE, and the adaptive carrier recovery circuit mitigates instability that might be associated with the DFE.

Abstract: A digital filter pre-calculates C(1)*S(n?1), C(2)*S(n?2) . . . C(p?1)*S(n?p+1), prior to the arrival of sample S(n). As such y ? ( n ) = ? k = 0 k = p - 1 ? C ? ( k ) * S ? ( n - k ) may be calculated as a result of a single further multiply and accumulate operation, upon arrival of the symbol S(n). This, significantly reduces the latency of the filter.

Abstract: A digital receiver, that may be used to receive VSB/QAM digital television signals, includes an adaptive fine carrier recovery circuit that compensates for deviations in the carrier frequency or phase. The carrier recovery circuit de-rotates a signal including phase errors. Estimations of phase errors are filtered using a filter whose gain and bandwidth are adjusted adaptively. This allows the carrier recovery circuit to track phase/frequency offset without introducing significant jitter. In one embodiment, the receiver includes a DFE, and the adaptive carrier recovery circuit mitigates instability that might be associated with the DFE.