DESCRIPTION OF THE PREFERRED EMBODIMENT

[0034] The present invention will be discussed hereinafter in detail in terms of the preferred embodiment of a cellular telephone set, a dial lock releasing method to be used in the same and a program therefor according to the present invention with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be obvious, however, to those skilled in the art that the present invention may be practiced without these specific details. In other instance, well-known structures are not shown in detail in order to avoid unnecessary obscurity of the present invention.

[0035] FIG. 1 is a block diagram showing one embodiment of a cellular telephone set according to the present invention. In FIG. 1 , the cellular telephone set 1 is constructed with an antenna 11 , a control portion 12 , a memory 13 , a key operating portion 14 , a display portion 15 , a radio portion 16 , a signal processing portion 17 , a storage medium 18 , a speaker 19 and a microphone 20 .

[0036] The antenna 11 transmits and receives a radio wave. In the key operating portion 14 , user may perform various setting, operation of an identification number or calling and call receiving operation. The display portion 15 displays an operation menu upon operation of various setting or identification number, or operation for calling and call reception. The radio operation 16 performs process relating to radio communication. The signal processing portion 17 processes a received signal and a transmitting signal. The speaker 19 outputs a received voice, and the microphone 20 inputs a voice.

[0037] The control portion 12 is connected to the memory 13 , the key operating portion 14 , the display portion 15 , the radio portion 16 and the signal processing portion 17 , respectively to perform control for respective components. On the other hand, the control portion 12 has dial lock means 121 for performing dial lock function for the key operating portion 14 for disabling key input except for entry of the identification number.

[0038] The memory 13 stores contents of various setting, identification number and so forth. Particularly, the memory 13 has a terminal identification number storage region 131 for storing a terminal identification number, a dial lock release number storage region 132 fir storing a dial lock releasing number which releases dial lock (inhibited condition) for disabling key input in the preliminarily set function, such as dial lock or the like for the key operating portion 14 , and an identification number setting information storage region 133 storing information to be objective for dial lock (hereinafter referred to as identification number setting information). It should be noted that when the dial lock release number is used only for releasing of dial lock, it is not necessary to provide the identification number setting information storage region 133 .

[0039] The storage medium 18 stores a program (computer executable program) for realizing processes for respective portions. The control portion 12 controls respective components set forth above by executing the program stored in the storage portion 18 .

[0040] FIG. 2 is an illustration showing an example of construction of the identification number setting information storage region 133 of the memory 13 of FIG. 1 . In FIG. 2 , the identification number and indicative of set contents indicating the identification number setting information corresponding to the identification number are stored in the identification number setting information storage region 133 .

[0041] For example, when the identification number is a dial lock release number #1, the fact as being used for releasing dial lock condition of “calling function to registered number” is stored as set content. When the identification number is the dial lock release number #2, the fact as being used for releasing dial lock conditions of “calling function” and “internet browsing function” is stored as set contents.

[0042] It should be noted that while the dial lock release numbers #1 and #2 are stored in the identification number setting information storage region 133 in the example shown in FIG. 2 , it is possible to store one, three or more dial lock release number may also be stored in the identification member setting informtaion storage region 133 .

[0043] FIGS. 3A to 3 D are illustration showing one example of setting procedure of the dial lock release number of one embodiment of the cellular telephone set 1 according to the present invention. The setting procedure of the embodiment is discussed herein after with referring to FIGS. 2 and 3 A to 3 D.

[0044] At first, when the dial lock release number of the cellular telephone set 1 is to be set, when dial lock release number setting is selected on a menu screen of the display portion 15 (see FIG. 3A ), the control portion 12 displays a screen image prompting input of the terminal identification number on the setting screen image of the display portion 15 (see FIG. 3B ).

[0045] When the user (parent) inputs the terminal identification number through the key operating portion 14 , the control portion 12 makes judgment whether the terminal identification number is correct or not. If correct, a display screen image prompting setting of the dial lock releasing number is displayed on the setting screen image of the display portion 15 (see FIG. 3C ). When the user (parent) inputs the dial lock releasing number through the key operating portion 14 on the setting screen image, the control portion 12 stores the input dial lock releasing number in the dial lock number storage region 132 .

[0046] Subsequently, the control portion 12 displays a screen image for prompting setting functions (functions to situating in inhibiting condition as set forth above) for which dial lock is to be released by the dial lock releasing number, on the setting screen image of the display portion 15 (see FIG. 3D ). In such setting screen image, for example, dial locking for “calling function”, “calling function restricted to the preliminarily set number”, “mailing function”, “internet browsing function” and so forth can be set to be released by the dial lock releasing number.

[0047] On the setting screen image, if the user (parent) inputs the setting content of the dial lock releasing number through the key operating portion 14 , the control portion 12 stores the dial lock releasing number and the set content in the identification number setting information storage region 133 (see FIG. 2 ).

[0048] FIG. 4 is a flowchart showing an example of releasing procedure of dial lock of one embodiment of the cellular telephone set 1 of the present invention. Dial lock releasing procedure of one embodiment of the cellular telephone set 1 according to the present invention will be discussed with referring to FIGS. 1 to 4 . It should be noted that the process shown in FIG. 4 is realized by executing the program stored in the storage medium 18 .

[0049] When preliminarily set combination of keys is depressed or the items of the dial lock function contained in the operation menu or the setting menu is selected, the control portion 12 of the cellular telephone set 1 makes the dial lock means 121 place the state of itself into dial lock state (step S 1 ). Under the dial lock condition where only key input for entry of the identification number is enabled, and key operation for other key inputs are disabled.

[0050] The control portion 12 maintains the dial lock condition until the identification number is input under the dial lock condition (step 2 of FIG. 4 ). In this case, there are two modes of dial lock condition, wherein one mode of dial lock condition is to make key input for a part of functions and the other mode of dial lock condition is to make all functions.

[0051] The control portion 12 is responsive to input of the identification number (step S 2 of FIG. 4 ) to make judgment whether the identification number is the terminal identification number stored in the terminal identification number storage region 131 or the dial lock releasing number stored in the dial lock releasing number storage region 132 (step S 3 of FIG. 4 ). When the identification number is judged as the terminal identification number, the control portion 12 releases dial lock condition of all functions.

[0052] On the other hand, when the identification number is judged as the dial lock releasing number, the control portion 12 releases dial lock condition of predetermined functions preliminarily set in the identification number setting information storage region 133 (step S 5 of FIG. 4 ). In this case, as releasing of dial lock condition of the predetermined functions may be either releasing of dial lock condition for all functions or releasing of dial lock condition for a part of functions.

[0053] For example, when the input identification number is the dial lock releasing number #1, dial lock condition of “calling function to registered numbers” is released to permit calling only the registered numbers (for example, telephone numbers of terminals used by the parents and friends). Accordingly, in case of call arrival which is cut after one or several times of ringing tone, such as “junk call”, the current user (child) may not call back to the caller's telephone number unless the caller's telephone number is registered.

[0054] On the other hand, when the input identification number is the dial lock releasing number #2, dial lock conditions of “calling function to registered number” and “internet browsing function” are released to permit calling to the preliminarily set registered numbers and browsing of internet. By this, even when the user (parent) manages the identification number, the user (child) may release dial lock function, and charge for the terminal (cellular telephone set 1 ) can be managed by the user (parent).

[0055] As set forth above, in the shown embodiment, in addition to permit setting the identification number, by permitting arbitrarily setting the dial lock releasing number dedicated for releasing dial lock condition, even when the user (parent) manages the identification number, the user (child) may release dial lock function.

[0056] On the other hand, in the shown embodiment, by arbitrarily setting the functions for which dial lock conditions are released by the dial lock releasing number, the user (parent) may restrict use range of the cellular telephone set 1 by the user (child). Therefore, the charge for the cellular telephone set 1 can be managed by the user (parent).

[0057] As set forth above, the cellular telephone set according to the present invention which performs setting and releasing of various function when the input identification number is judged as correct identification number, and can be set dial lock freely for disabling key input, holds the dial lock releasing number preliminarily set and dedicated for releasing dial lock in holding means and permits releasing of dial lock condition when the input identification number in the dial lock condition is judged as the dial lock releasing number held in the holding means. Therefore, when the parent manages the identification number, the child may release dial lock function.

[0058] On the other hand, the cellular telephone set according to the present invention permits arbitrary setting of functions which can be released dial lock condition by the dial lock releasing number, the parent may manage charge for the cellular phone set.

[0059] Although the present invention has been illustrated and described with respect to exemplary embodiment thereof, it should be understood by those skilled in the art that the foregoing and various other changes, omission and additions may be made therein and thereto, without departing from the spirit and scope of the present invention. Therefore, the present invention should not be understood as limited to the specific embodiment set out above but to include all possible embodiments which can be embodied within a scope encompassed and equivalent thereof with respect to the feature set out in the appended claims.