Abstract: A finger/palm-print image processing apparatus comprises: an image converting means that converts finger/palm-print images to conversion images consisting of first and second sets of elements; and an area detecting means that detects, from the conversion images as converted by the image converting means, an area where the number of the first set of elements is equal to or greater than a predetermined number. The first and second sets of elements herein are the elements of sets each of which consists of elements of the finger/palm-print images. The first set of elements have those degrees of change in color information which meet a predetermined criterion, while the second set of elements have those degrees of change in color information which do not meet the predetermined criterion.

Abstract: A finger/palm-print image processing apparatus comprises: an image converting means that converts finger/palm-print images to conversion images consisting of first and second sets of elements; and an area detecting means that detects, from the conversion images as converted by the image converting means, an area where the number of the first set of elements is equal to or greater than a predetermined number. The first and second sets of elements herein are the elements of sets each of which consists of elements of the finger/palm-print images. The first set of elements have those degrees of change in color information which meet a predetermined criterion, while the second set of elements have those degrees of change in color information which do not meet the predetermined criterion.

Abstract: A memory protection device for an electronic apparatus has a cartridge storage portion for accommodating a memory cartridge. The memory cartridge stores data for the electronic apparatus. This memory protection device further comprises a lid connected to the cartridge storage portion, a sensor for detecting the opened/closed condition of the lid, and a disconnecting circuit which is responsive to the opened condition of the lid for electrically disconnecting the memory cartridge from a control circuit in the electronic apparatus when the cartridge in installed in the cartridge storage portion.

Abstract: A capacitive type coupling data transmission system for portable electronic apparatus is comprised of an input circuit, a capacitance changing circuit, a transmitting circuit capacitively coupled to, a receiving circuit, and a detecting circuit for detecting any change in the capacitance changing circuit. A data signal to be transmitted is inputted into the input circuit. Based on the value of an inputted binary digital data signal, the capacitance of the capacitance changing circuit is changed. The capacitance change is capacitively transmitted from the transmitting circuit to the receiving circuit and detected thereat. The detecting circuit may be an oscillator circuit, a an RC differentiating circuit, or an RC integrating circuit.