Abstract: Provided is a method of manufacturing a magnet capable of using only a single pole, whereby a combination force between a permanent (or referred to as a magnet) and a yoke (or referred to as a shielding metal) can be improved without performing a manual bonding work therebetween and then the efficiency of subsequent processes, such as polishing and plating, after combination and completeness of a product can be improved.

Abstract: Provided is a case for a portable electronic device, including: a body in which the portable electronic device is accommodated; and a non-insertion type interface including an insertion type connector that is formed on an inner side of the body and that is inserted into an open type port formed at the portable electronic device and a non-insertion type port that is formed on an outer side of the body opposite to the side on which the insertion type connector is formed so as to be electrically connected to the insertion type connector and that causes a non-insertion type connector of a peripheral device to come into surface contact with the non-insertion type port using magnetism.

Abstract: Provided is a case for a portable electronic device, including: a body in which the portable electronic device is accommodated; and a non-insertion type interface including an insertion type connector that is formed at an opposite side of the body and that is inserted into an open type port formed at the portable electronic device and a non-insertion type port that is formed at a different side from the side at which the insertion type connector is formed so as to be electrically connected to the insertion type connector and that causes the non-insertion type connector of the peripheral device to come into surface contact with the non-insertion type port using magnetism.

Abstract: Provided is a tablet personal computer (PC) having a non-insertion type port, the tablet PC including a non-insertion type port to which a non-insertion type connector of a cradle is connected using magnetism and which supplies input signals of a peripheral device connected to a non-insertion type port of the cradle using magnetism to a control unit or which supplies output signals of the control unit to the peripheral device, wherein the non-insertion type port includes: a magnetic coupling member that is formed on a contact surface of a body and comes into surface contact with a magnetic coupling member formed on a contact surface of the non-insertion type connector using magnetism; and a contact terminal that is formed on the contact surface of the body and causes a contact terminal of the non-insertion type connector to come into non-insertion contact with the contact terminal when the magnetic coupling members are coupled to each other using magnetism, thereby enabling reciprocal power supply and data tr