Abstract: A server according to an embodiment includes a processor configured to receive a friend add request for a target account from a user terminal accessed with a user account; based on one of the user account and the target account being a protected account, transmit an approval request for the friend add request to a protector account connected to the protected account; and based on receiving a reply to the approval request from the protector terminal, add the target account to a friend list of the user account.

Abstract: Methods and apparatuses are provided that is performed by an electronic device. A display screen provides a first user interface to receive a first user input and to display user inputted content including a first representation of the first user input. An instruction to provide a second user interface is received. The display screen provides the second user interface together with the first user interface in response to the received instruction. A portion of the user inputted content is displayable in the second user interface in an enlarged size. A second user input is received via the second user interface. In response to the second user input, a second representation of the second user input is displayed in the second user interface. The user inputted content displayed in the first user interface is updated by adding the second representation in a displayed size smaller than a size used for displaying the second representation in the second user interface.

Abstract: Methods and apparatuses are provided that is performed by an electronic device. A display screen provides a first user interface to receive a first user input and to display user inputted content including a first representation of the first user input. An instruction to provide a second user interface is received. The display screen provides the second user interface together with the first user interface in response to the received instruction. A portion of the user inputted content is displayable in the second user interface in an enlarged size. A second user input is received via the second user interface. In response to the second user input, a second representation of the second user input is displayed in the second user interface. The user inputted content displayed in the first user interface is updated by adding the second representation in a displayed size smaller than a size used for displaying the second representation in the second user interface.

Abstract: A method and an apparatus for enlarging a message in a mobile communication system is provided. Selection of a font size change menu is monitored during message writing or reading. If the font size change menu is selected, a pop-up window or a magnifier window is invoked and a message is enlarged in the pop-up or magnifier window.

Abstract: Disclosed herein is a power supply device capable of correcting power factor. The power supply device includes a rectification circuit, a first constant current circuit, a capacitor, and a second constant current circuit. The rectification circuit rectifies input Alternating Current (AC) voltage. The first constant current circuit is connected in series to a load. The capacitor is connected in parallel to the first constant current circuit and the load that are connected in series to each other. The second constant current circuit is disposed between the output of the rectification circuit and the capacitor.

Abstract: A mobile communication terminal and method for proving a substitute image are provided, which automatically searches a substitute image suitable to a video call and transmits the substitute image to the opposite party. A user's image is automatically recorded during a video call, and tagged with information related to the time and situation of the recording, such as location information and time information. The tagged image is stored as a substitute image. When transmission of a substitute image is set while a video call is performed, a substitute image having situation information consistent with or similar to a corresponding situation is searched and then transmitted to the opposite party. Therefore, when a mobile communication terminal performs a video call in various situations, a substitute image suitable to a corresponding situation can be provided to an opposite terminal.

Abstract: Disclosed herein is a power supply device capable of correcting power factor. The power supply device includes a rectification circuit, a first constant current circuit, a capacitor, and a second constant current circuit. The rectification circuit rectifies input Alternating Current (AC) voltage. The first constant current circuit is connected in series to a load. The capacitor is connected in parallel to the first constant current circuit and the load that are connected in series to each other. The second constant current circuit is disposed between the output of the rectification circuit and the capacitor.

Abstract: A system and method of automatically deleting logged calls and messages in a mobile phone, in order to maintain security and protect privacy. The system and method employ the operations of: selecting a log deleting management database from a menu; inputting a password; displaying types of log deleting management database if the input password is correct; and performing at least one of recording a telephone number, a method of dialing the telephone number and a method of recording the telephone number when the telephone number record is selected from the log deleting management database.

Abstract: A mobile communication terminal and method for proving a substitute image are provided, which automatically searches a substitute image suitable to a video call and transmits the substitute image to the opposite party. A user's image is automatically recorded during a video call, and tagged with information related to the time and situation of the recording, such as location information and time information. The tagged image is stored as a substitute image. When transmission of a substitute image is set while a video call is performed, a substitute image having situation information consistent with or similar to a corresponding situation is searched and then transmitted to the opposite party. Therefore, when a mobile communication terminal performs a video call in various situations, a substitute image suitable to a corresponding situation can be provided to an opposite terminal.

Abstract: A system and method of automatically deleting logged calls and messages in a mobile phone, in order to maintain security and protect privacy. The system and method employ the operations of: selecting a log deleting management database from a menu; inputting a password; displaying types of log deleting management database if the input password is correct; and performing at least one of recording a new telephone number, a method of dialing the new telephone number and a method of recording the new telephone number when the new telephone number record is selected from the log deleting management database.

Abstract: A method and an apparatus for enlarging a message in a mobile communication system is provided. Selection of a font size change menu is monitored during message writing or reading. If the font size change menu is selected, a pop-up window or a magnifier window is invoked and a message is enlarged in the pop-up or magnifier window.

Abstract: A system and method of automatically deleting logged calls and messages in a mobile phone, in order to maintain security and protect privacy. The system and method employ the operations of: selecting a log deleting management database from a menu; inputting a password; displaying types of log deleting management database if the input password is correct; and performing at least one of recording a new telephone number, a method of dialing the new telephone number and a method of recording the new telephone number when the new telephone number record is selected from the log deleting management database.

Abstract: A device for enabling an earphone-microphone combination including a radio module to be used for a mobile phone, comprises a switching device for changing the operational mode of the radio module between telephoning mode and radio mode according to first and second mode selection signals, the radio module being muted in the telephoning mode, and a radio module interface connector connected with the hands-free kit interface connector of the mobile phone both to supply the power of the mobile phone battery to the radio module and to communicate the first and second mode signals and audio signals between the mobile phone and radio module or the earphone-microphone combination.