Write-only memory (joke)

Abstract: A memory tag comprises an array of non-volatile memory, means for inductively obtaining power to enable receipt of data from and transmission of data to a reader device, a processor operable to process received data and to generate data to be transmitted; and a hash co-processor configured to apply a hash function to data applied to it. The array of non-volatile memory includes an area of write only memory. Reader devices for use with such memory tags and methods of using such memory tags are also described.

Abstract: MOS type write only memory cell has a single MOS transistor with a floating gate (2) with device for the temporary memorizing of the transistor state. There is only a power supply to the transistor during read periods or during a first programming period. Reading of the state stored by the transistor is instigated when power is supplied to the integrated circuit containing the memory cell, the time delay before reading being chosen such that it is after any change of state of the transistor but less than the time for establishing a state for a cell that has not yet been written to. An Independent claim is made for a procedure for controlling the memory cell.

Abstract: PURPOSE:To attain simple and high speed detection of a part or all of a shape of an object to be detected by digitizing an image signal of the object and processing digitally the picture data. CONSTITUTION:All data addresses of an optical random access memory 1a are outputted sequentially from an image sensor scanning circuit 2 and stored in a frame memory 3. When the data of one picture is stored in a memory A of the frame memory 3, the memory A becomes a data read only memory. Then a memory B being a data read only becomes a data write only memory. Thus, the device can correspond separately to the picture input from an image sensor head 1 and the picture read from a video signal generating means 4 at the same time. The picture data of the inputted one picture is displayed on a monitor television receiver 5 as a binary-coded image. The operator inputs the data requiring scanning from an input keyboard 6 to a picture processing circuit 7 while observing the picture displayed on the monitor television receiver 5.

Abstract: A memory tag comprises an array of non-volatile memory, means for inductively obtaining power to enable receipt of data from and transmission of data to a reader device, a processor operable to process received data and to generate data to be transmitted; and a hash co-processor configured to apply a hash function to data applied to it. The array of non-volatile memory includes an area of write only memory. Reader devices for use with such memory tags and methods of using such memory tags are also described.