Abstract: A method of programming a non-volatile memory device employing program loops. Each program loop comprises a programming operation and a subsequent plurality of verifying operations. The method includes preventing the next program loop based on the results of performing the plurality of verifying operations of a current program loop each verifying operation verifying whether the selected memory cell transistors are program-passed. The decision to re-program may be based on a program pass number of the memory cell transistors obtained as a result of the plurality of verifying operations of the current program loop.

Abstract: A method of programming a non-volatile memory device employing program loops. Each program loop comprises a programming operation and a subsequent plurality of verifying operations. The method includes preventing the next program loop based on the results of performing the plurality of verifying operations of a current program loop each verifying operation verifying whether the selected memory cell transistors are program-passed. The decision to re-program may be based on a program pass number of the memory cell transistors obtained as a result of the plurality of verifying operations of the current program loop.

Abstract: The present invention relates to a radial disk type ion mobility spectrometer, comprising: an ionizing chamber which is made of a cylindrical tube, and includes an inlet for supplying sample gas therethrough, an ionizing means for ionizing the supplied sample gas to generate ions having a predetermined polarity, and a slit formed by cutting away a part of a cylindrical wall corresponding to a predetermined width for discharging the ions therethrough; a shutter grid installed adjacent to the slit of the ionizing chamber for controlling passage of the ions through the slit; a drift chamber which is a hollow tube having a predetermined thickness and including an outer cylindrical wall having a predetermined diameter and an inner cylindrical wall having an inner diameter equal to an outer diameter to the ionizing chamber so that an annular space is formed between the inner and outer cylindrical walls, of which a part of the inner cylindrical wall corresponding to a width larger than that of the slit is cut away s

Abstract: The present invention relates to a radial disk type ion mobility spectrometer, comprising: an ionizing chamber which is made of a cylindrical tube, and includes an inlet for supplying sample gas therethrough, an ionizing means for ionizing the supplied sample gas to generate ions having a predetermined polarity, and a slit formed by cutting away a part of a cylindrical wall corresponding to a predetermined width for discharging the ions therethrough; a shutter grid installed adjacent to the slit of the ionizing chamber for controlling passage of the ions through the slit; a drift chamber which is a hollow tube having a predetermined thickness and including an outer cylindrical wall having a predetermined diameter and an inner cylindrical wall having an inner diameter equal to an outer diameter to the ionizing chamber so that an annular space is formed between the inner and outer cylindrical walls, of which a part of the inner cylindrical wall corresponding to a width larger than that of the slit is cut away s