Patent application number | Description | Published |
20120035725 | RETINAL PROSTHESIS TECHNIQUES - Apparatus is provided including an external device including, a mount, which is placed in front of an eye of a subject. A power source is coupled to the mount and emits energy toward the eye. An intraocular device is implanted entirely in the subject's eye, and includes a control unit, a plurality of stimulating electrodes, and an energy receiver, which receives the energy from the power source and generates a voltage drop in response thereto. A plurality of photosensors detect photons and generate a signal in response thereto. Driving circuitry is coupled to the energy receiver and to the photosensors, and drives the electrodes to apply electrical charges to a retina in response to the signals from the photosensors. The external device modulates the emitted energy, and the control unit demodulates the modulated energy to regulate an operation parameter of the intraocular device. Other embodiments are also described. | 02-09-2012 |
20120221103 | RETINAL PROSTHESIS WITH EFFICIENT PROCESSING CIRCUITS - A medical device includes an array of electrodes, configured for implantation in contact with tissue in an eye of a living subject. Driver circuitry is configured to drive the electrodes in an alternating pattern, such that different groups of the electrodes are driven to stimulate the tissue during different, predetermined respective time periods. A power sensor, may be coupled to deactivate a first group of the electrodes when the available electrical power drops below a predetermined threshold, while a second group of the electrodes remains active. Other embodiments are also described. | 08-30-2012 |
20120259410 | Retinal Prosthesis Techniques - Apparatus for use with an external non-visible light source is provided. The apparatus comprises an intraocular device configured for implantation in a human eye, and comprising an energy receiver. The energy receiver is configured to receive light emitted from the external non-visible light source, and extract energy from the emitted light for powering the intraocular device. The intraocular device is configured to regulate a parameter of operation of the intraocular device based on a modulation of the light emitted by the external non-visible light source and received by the energy receiver. Other embodiments are also described. | 10-11-2012 |
20140031931 | RETINAL PROSTHESIS WITH EFFICIENT PROCESSING CIRCUITS - A medical device includes an array of electrodes, configured for implantation in contact with tissue in an eye of a living subject. Driver circuitry is configured to drive the electrodes in an alternating pattern, such that different groups of the electrodes are driven to stimulate the tissue during different, predetermined respective time periods. A power sensor, may be coupled to deactivate a first group of the electrodes when the available electrical power drops below a predetermined threshold, while a second group of the electrodes remains active. Other embodiments are also described. | 01-30-2014 |
20140143559 | WEAK POWER SUPPLY OPERATION AND CONTROL - Power monitoring circuitry is provided, comprising a capacitor configured to receive a current, so as to charge the capacitor and a switching device, connected to the capacitor. The switching device is configured to periodically discharge the capacitor in response to receipt of a clock signal from a circuit being monitored. The power monitoring circuitry also comprises a comparator, configured to perform a comparison of a voltage developed by the capacitor with a threshold voltage, and to output an indication of a change in power supplied to the circuit in response to the comparison. Other embodiments are also described. | 05-22-2014 |
20140188222 | RETINAL PROSTHESIS TECHNIQUES - Apparatus for use with an external non-visible light source is provided. The apparatus comprises an intraocular device configured for implantation in a human eye, and comprising an energy receiver. The energy receiver is configured to receive light emitted from the external non-visible light source, and extract energy from the emitted light for powering the intraocular device. The intraocular device is configured to regulate a parameter of operation of the intraocular device based on a modulation of the light emitted by the external non-visible light source and received by the energy receiver. Other embodiments are also described. | 07-03-2014 |
20150207572 | TRANSFER OF POWER AND DATA - Apparatus and methods are described, including a method for transmission of power and data during a plurality of consecutive time intervals. During a power-transmission portion of each of the plurality of consecutive time intervals, a power signal, in which no data is encoded, is transmitted. During a power-and-data-transmission portion of each of the plurality of consecutive time intervals, a power-and-data signal, in which is encoded a single bit, is transmitted. The power-and-data signal includes: (a) a high-level power-and-data signal portion, and (b) a low-level power-and-data signal portion. Other applications are also described. | 07-23-2015 |
20160099046 | TECHNIQUES FOR DATA RETENTION IN MEMORY CELLS DURING POWER INTERRUPTION - Volatile memory is described, comprising: (i) a first inverter comprising a first p-type field effect transistor (FET) connected to a first n-type FET; (ii) a second inverter comprising a second p-type FET connected to a second n-type FET; (iii) a third p-type FET; (iv) a fourth p-type FET; and (v) a floating line connecting (i) a source of the third p-type FET, and (ii) a source of the fourth p-type FET, wherein: (a) the first data line is connected to: a gate of the second p-type FET, a gate of the second n-type FET, a drain of the third p-type FET, and a gate of the fourth p-type FET, and (b) the second data line is connected to: a gate of the first p-type FET, a gate of the first n-type FET, a drain of the fourth p-type FET, and a gate of the third p-type FET. | 04-07-2016 |