Abstract: Charge accumulation read-out device of photosensitive detectors comprising a charge transfer shift register which receives the information from N detectors disposed in the same line. This register has the same storage area over the whole of its length and conveys the information collected at different times from these detectors without mixing it, means provide simultaneously several read-outs of the charges stored by certain given stages of the register, which ensures in phase summation of the information. The invention concerns the application of TDI read-out to photosensitive detector matrices.

Abstract: The present invention concerns a process for correcting the output level of a charge-transfer device, as well as a device for operating the same. Said process comprises different steps, respectively a first step where the quantities of charges corresponding to a reference signal that are stored in N stages are read successively and the values being function of the different quantities of charges read, are stored in a memory; and a second step, where before each read-out of a charges quantity, the precharge level of the output stage is modulated in function of the value of the same rank stored in the memory.

Abstract: A solid-state photosensitive device for detecting electromagnetic radiation comprises N photosensors connected through a transition zone to a reading device of the charge-coupled type. The reading device features two charge-coupled shaft registers having N/2 parallel inputs and one series output. The charges detected by the photosensors are received simultaneously by the two registers and transferred to a single read stage under the action of control voltages chosen so as to permit alternate reading of each register.