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US 7,350,713 B2Granted
Mobile radio terminal apparatus
AssigneeKabushiki Kaisha Toshiba
InventorsAkinori Saito, Toshihiro Ueno
Life of this patent
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Abstract
When power is turned on, control unit requests a user to enter a security code on the basis of information of SIM card inserted into a card I/F. If the security code entered by the user is an authorized code, the control unit permits the user to use the apparatus such that the apparatus can be utilized. In addition, the control unit urges a display unit to display a security code entered through operation unit, as hidden letters, and to display a control command such that the control command can be visually recognized.
Claims4
A mobile radio terminal apparatus comprising:
- a display unit which displays at least text information;
- an entry unit which accepts entry of a letter;
- a security code information processing unit which prompts a user to input a security code and which enables or disables operation functions of the mobile radio terminal apparatus depending on the input security code;
- and
- a display control unit which, when the input of the security code information is prompted, controls the display unit to:
- (a) display a letter which is different from the letter accepted by the entry unit, if the letter accepted by the entry unit corresponds to a numeric key;
- and
- (b) display a first predetermined letter, corresponding to a non-numeric key, and a second letter subsequently accepted by the entry unit, if the first predetermined letter is entered and the second letter corresponding to a numeric key or a non-numeric key is subsequently entered.
5 more elements
Dependencies are inferred from the claim text.