Abstract: A data compression system can include a compression unit comprising a single chaotic system having an identified initial condition that produces a desired output sequence of data corresponding to a data set being stored. The single chaotic system can be identified using a chain of controlled nonlinear systems and a dynamical search technique to match the output, in sequence over consecutive time intervals with the chain of the controlled nonlinear systems.

Abstract: A data compression system can include a compression unit comprising a single chaotic system having an identified initial condition that produces a desired output sequence of data corresponding to a data set being stored. The single chaotic system can be identified using a chain of controlled nonlinear systems and a dynamical search technique to match the output, in sequence over consecutive time intervals with the chain of the controlled nonlinear systems.

Abstract: A dynamical search engine for searching a database is also provided. The dynamical search engine includes an array of nonlinear dynamical elements. The nonlinear dynamical element information items in a manner that confines the state of each element on a fixed point and uniquely encodes the information items. The dynamical search engine also includes a controller for controlling electrical signals supplied to elements of the array in a predetermined sequence. One supplied signal increases a state value of each element of the array by a quantity defining a search key that corresponds to a searched-for information item. A subsequently supplied signal updates the state value of each element of the array by performing a nonlinear folding of each state value based on a predetermined pivot.

Abstract: The subject invention utilizes the characteristics of in vivo tissue impedances to provide an embodiment of a retinal rake capable of providing a visible and/or preferably an audible signal to a surgeon that more clearly indicates which type of tissue(s) is in contact with the retinal rake. A preferred embodiment comprises a handheld, battery operated retinal rake having two electrodes, wherein at least one electrode is the modified retinal rake. Upon contact with different optical tissues, e.g., epiretinal membranes, retinal tissue, vitreous humor, etc., the electrodes detect varying impedances which are translated by onboard circuitry into various signals that indicate what type of tissue, fluid, structure, etc. is in contact with the retinal rake.

Abstract: A logic gate implements logical expressions. A least one logic gate input receives at least one input logic gate signal and at least one control signal. At least one output for produces a logic gate output signal. A nonlinear updater operates as a dynamically configurable element to produce a plurality of different logic gates as selected by the control signal. The nonlinear updater includes a nonlinear updater output. The nonlinear updater is configured to apply a nonlinear function to the input logic gate signal to produce the nonlinear updater output signal representing a logical expression being implemented by one of the plurality of different logic gates on the input logic gate signal. A comparator includes a comparator input that is adapted to receive a reference threshold value for producing the logical gate output signal based on a comparison of the nonlinear output signal to the reference threshold value.

Abstract: A logic gate implements logical expressions. A least one logic gate input receives at least one input logic gate signal and at least one control signal. At least one output for produces a logic gate output signal. A nonlinear updater operates as a dynamically configurable element to produce a plurality of different logic gates as selected by the control signal. The nonlinear updater includes a nonlinear updater output. The nonlinear updater is configured to apply a nonlinear function to the input logic gate signal to produce the nonlinear updater output signal representing a logical expression being implemented by one of the plurality of different logic gates on the input logic gate signal. A comparator includes a comparator input that is adapted to receive a reference threshold value for producing the logical gate output signal based on a comparison of the nonlinear output signal to the reference threshold value.

Abstract: A logic gate implements logical expressions. A least one logic gate input receives at least one input logic gate signal and at least one control signal. At least one output for produces a logic gate output signal. A nonlinear updater operates as a dynamically configurable element to produce a plurality of different logic gates as selected by the control signal. The nonlinear updater includes a nonlinear updater output. The nonlinear updater is configured to apply a nonlinear function to the input logic gate signal to produce the nonlinear updater output signal representing a logical expression being implemented by one of the plurality of different logic gates on the input logic gate signal. A comparator includes a comparator input that is adapted to receive a reference threshold value for producing the logical gate output signal based on a comparison of the nonlinear output signal to the reference threshold value.

Abstract: A dynamical search engine for searching a database is also provided. The dynamical search engine includes an array of nonlinear dynamical elements. The nonlinear dynamical element information items in a manner that confines the state of each element on a fixed point and uniquely encodes the information items. The dynamical search engine also includes a controller for controlling electrical signals supplied to elements of the array in a predetermined sequence. One supplied signal increases a state value of each element of the array by a quantity defining a search key that corresponds to a searched-for information item. A subsequently supplied signal updates the state value of each element of the array by performing a nonlinear folding of each state value based on a predetermined pivot.

Abstract: A logic gate implements logical expressions. A least one logic gate input receives at least one input logic gate signal and at least one control signal. At least one output for produces a logic gate output signal. A nonlinear updater operates as a dynamically configurable element to produce a plurality of different logic gates as selected by the control signal. The nonlinear updater includes a nonlinear updater output. The nonlinear updater is configured to apply a nonlinear function to the input logic gate signal to produce the nonlinear updater output signal representing a logical expression being implemented by one of the plurality of different logic gates on the input logic gate signal. A comparator includes a comparator input that is adapted to receive a reference threshold value for producing the logical gate output signal based on a comparison of the nonlinear output signal to the reference threshold value.

Abstract: The subject invention utilizes the characteristics of in vivo tissue impedances to provide an embodiment of a retinal rake capable of providing a visible and/or preferably an audible signal to a surgeon that more clearly indicates which type of tissue(s) is in contact with the retinal rake. A preferred embodiment comprises a handheld, battery operated retinal rake having two electrodes, wherein at least one electrode is the modified retinal rake. Upon contact with different optical tissues, e.g., epiretinal membranes, retinal tissue, vitreous humor, etc., the electrodes detect varying impedances which are translated by onboard circuitry into various signals that indicate what type of tissue, fluid, structure, etc. is in contact with the retinal rake.