Abstract:
An integrated circuit stores analog or digital information, or both, in memory cells (416). The memory cells provide analog or multilevel storage. Analog information is provided through an analog signal input (405), and digital information is provided through a digital signal input (407). A scheme for storing digital information is consistent with the scheme used to store analog information. Data is retrieved from the memory cells, and output to the analog or digital signal output (454, 463) depending on the type of data. A digital reference generator reference generator (425) generates various analog equivalent voltages for the digital signal input.
Abstract:
An acquisition process for signal sampling includes high-speed analog signal sampling, storing the samples of the analog signal in a matrix of memory cells, and re-reading the samples from the cells at low speed. Two identical memory devices are provided in each memory cell. One sample of an analog signal is stored in one memory device, and one sample of that signal that is out of phase is stored in the other memory device.
Abstract:
A nonvolatile semiconductor memory includes a memory unit, memory control unit, defect position detection unit, and data correction unit. The memory unit has a plurality of memory cells to discretely store an analog signal such as an image signal as analog data in the form of an analog value. The memory control unit sequentially selects the memory cells as a read out target of the memory unit in response to a predetermined clock. The defect position detection unit detects, on the basis of defect position information indicating a position of defective analog data included in the analog data read out from the memory unit, whether a memory cell corresponding to the defect position is selected by the memory control unit, and outputs a detection output. The data correction unit corrects the analog data at the defect position in accordance with the detection output from the defect position detection unit by using another analog data of the analog signal stored in said memory unit.
Abstract:
A multiple level logic memory device is achieved. The device comprises, first, a plurality of memory cells capable of storing an analog voltage. Second, there is included a means of converting an external data word value comprising one value of a set of at least three possible values into a writing analog voltage corresponding to the external data word value. Third, a means of decoding an external address value in response to a write command such that the writing analog voltage is electrically coupled to the memory cell is included. Fourth, there is included a means of converting the memory cell analog voltage into an external data word value comprising one value of the set of at least three possible values corresponding to the memory cell analog voltage. Finally, a means of encoding the external address value in response to a read command such that the memory cell analog voltage is electrically coupled to the means of converting the memory cell analog voltage is used.
Abstract:
An integrated circuit detects the voltage level of the supply voltage to the integrated circuit. Circuity on the integrated circuit including the charge pump circuity adjusts to operate more effectively or efficiently at the voltage level of the supply voltage.
Abstract:
Data 30 is recorded into storages 0 to 3 in parallel. Writing sectors are selected from a plurality of clusters so that the sectors are continuously arranged in each cluster, and the data is simultaneously written into the selected sectors. In the case where the sectors numbered in the original order are written into the storages 0 to 3 in parallel, the data of No. 0 is recorded into the head sector in the cluster of the storage 0, the data of No. 16 is recorded into the head sector in the cluster of the storage 1, the data of No. 32 is recorded into the head sector in the cluster of the storage 2, and the data of No. 48 is recorded into the head sector in the cluster of the storage 3, respectively. Thus, the data is arranged in the original order into the cluster constructed in the same storage. When the data is written into a plurality of storages in parallel, the compatibility of the file format of the written data is held.