Abstract: Techniques described herein provide memory redundancy. For example, the memory block for each pixel can be partitioned into multiple memory bins, and the number of memory bins can be larger than the number of time bins. Once a faulty memory cell is identified, an address associated with the memory bin that has the faulty memory cell can be skipped by an address generator. As such, the faulty memory cell is not used to store time-of-fight (ToF) information.

Abstract: Techniques described herein provide memory redundancy. For example, the memory block for each pixel can be partitioned into multiple memory bins, and the number of memory bins can be larger than the number of time bins. Once a faulty memory cell is identified, an address associated with the memory bin that has the faulty memory cell can be skipped by an address generator. As such, the faulty memory cell is not used to store time-of-fight (ToF) information.

Abstract: A method and system for controlling the wavelength of light emitted by a tunable laser. The system includes a wavelength tuner that provides information of a desired wavelength; a coupler for tapping a portion of the light from the tunable laser; and an apparatus for measuring the actual wavelength of the light. The apparatus takes the portion of the light as an input signal and splits the input signal into two beams that are directed through two paths of different optical lengths. Then, the two beams are interfered with each other in order to form a fringe pattern at an observation plane, where the fringe pattern is detected and analyzed to determine the wavelength of the light. A processor compares the difference between the desired and determined wavelengths, and sends a tuning signal to the tunable laser forming a feedback control of the tunable laser.