JPH01211093A - Portable electronic device - Google Patents

Abstract

PURPOSE:To selectively display and refer to arbitrary data by dividing data into groups, storing the divided data in a memory part, selecting one group of the data in the memory part by operating an operation key, and displaying the data in the selected group on a display part. CONSTITUTION:While a contact part 3, a liquid crystal display part 4, and a keyboard 5 are connected to a control element 21 to take charge of the whole control of the title device, a memory part 22 to store the data, a program memory 23 to store the processing program of the control element 21, etc., and a clock circuit 24 are connected to the control element 21. Further, the control element 21, the data memory 22, the program memory 23, and the clock circuit 24 are formed into an integrated circuit 2. Here, one group of the data stored in the memory part 22 is selected based on the operation of the operation key, and the data in the selected group are displayed on the display part 4. Thus, the arbitrary data can be selectively displayed and referred to.

Description

DETAILED DESCRIPTION OF THE INVENTION Objective of the Invention (Industrial Application Field) The present invention provides an IC (integrated circuit) chip having a built-in IC (integrated circuit) chip having a non-volatile memory and a control element such as a CPU.
The present invention relates to a portable electronic device called an IC card.

(Prior Art) - Recently, as a new portable data storage medium, an IC card has been developed which has a built-in IC chip having an erasable non-volatile memory and control elements such as a CPU, and is also equipped with a keyboard and a display section. being developed.

Such IC cards can input and output data electrically from the outside, and can also be input and output using the keyboard.
It is possible to display data in the memory or certain data determined by a program on the display section.

However, normally, in order to display the data in the memory on the display section, it is only necessary to display certain data during certain fixed processing by a program, and it has been impossible to display arbitrary data.

(Problems to be Solved by the Invention) The present invention was made to solve the problem that it was impossible to display arbitrary data as described above. An object of the present invention is to provide a portable electronic device that can be used for reference.

[Structure of the Invention] (Means for Solving the Problems) A portable electronic device of the present invention includes a memory section in which a plurality of data are stored in groups, an operation key for displaying data, and a data display. and a control for controlling these, selecting a group of data stored in the memory section based on the operation of the operation key, and displaying data in the selected group on the display section. It is equipped with a section.

(Function) Data is stored in groups in the memory section, a group of data in the memory section is selected by operating the operation keys, and the data in the selected group is displayed on the display section. By operating the operation keys, it becomes possible to selectively display and refer to arbitrary data, allowing for extensive data reference.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 5 shows an example of a portable electronic device according to the present invention.
For example, it shows the appearance of a multifunctional IC card used as a credit card. This IC card can be used both online and offline. For example, it stores and stores various data such as a transaction function that allows transactions with multiple accounts, a clock function that displays date data and time data, a calculator function that performs at least four arithmetic operations, and various data for data reference. It has functions such as data storage and display for display output.

In FIG. 5, reference numeral 1 denotes a card body, which is made of, for example, a rectangular thin plastic plate. A predetermined portion on the surface of the card body 1 is electrically connected to an integrated circuit (IC) 2 embedded in the card body 1, and is electrically connected to an external device (not shown).
For example, a contact section 3 for electrical communication with a card league writer, etc.), a liquid crystal display section 4 for displaying human output data, date data, time data, etc., and a keyboard (operation keys) 5 for data input. is provided. Furthermore, a crystal oscillator 6 and a battery 7 for power supply are embedded within the card body 1.

The keyboard 5 includes an account key 8 for specifying an account, a numeric keypad 9, an addition key lO1 as arithmetic keys, a subtraction key 11,
A division key 12, a multiplication key 13, an equal key 14, a decimal point key 15, and the like are provided.

The numeric keypad 9 is also used as an A-Z alphabet key,
The addition key 10 is also used as a NEXT key to advance the display state of the liquid crystal display section 4 to the next one, and the subtraction key 11 is used as a BACK key to return the display state of the liquid crystal display section 4 to the previous one. The equal key 14 is also used as a YES key or a start key (power on key), and the decimal point key 15 is also used as a NO key or an end key.

FIG. 4 shows the circuit configuration of the above-mentioned IC card. That is, a control element (control unit) 21 such as a CPU is in charge of overall control, and this control element 21 includes the contact unit 3, the liquid crystal display unit 4, and the keyboard 5.
A data memory (memory unit) 22 that stores data, a program memory 23 that stores processing programs for the $Im element 21, and a clock circuit 24 are also connected. , a data memory 22, a program memory 23, and a clock circuit 24 are formed of one chip (or a plurality of chips) as an integrated circuit 2, and this integrated circuit 2 is supplied with operating power by a battery 7. .

The data memory 22 is composed of an erasable nonvolatile memory such as an EEFROM, and is, for example, a third memory.
As shown in the figure, it consists of an area 31 where various data for data reference are stored, and an area 32 where other data (transaction account information, etc.) is stored. area 31
Various types of data for data reference are stored in groups, and group names 33 serve as identification information for classifying data into groups.Data names 34 serve as identification information for identifying one type of data. , data content 3
5. In the case of data reference, there is a flag 36 for determining whether reference is possible or not.

In addition, group name 33, data name 34, data content 35
, flag 36, etc. are input from an external device via the contact section 3, and are stored in the area 3 of the data memory 22.
1 is stored.

Next, the process of referring to data in such a configuration will be explained with reference to the flowchart shown in FIG. First, the power is turned on by pressing the yes key 14 in the keyboard 5 (STI). Then, the control element 21 displays the guidance prompting the menu selection on the liquid crystal display section 4.
to be displayed.

Here, by pressing the data reference key allocated for the data reference mode in the keyboard 5, the control element 21 is set to the data reference mode (Sr1). In this data reference mode, the control module 21 reads the group name 33 stored in the area 31 of the data memory 22.
The first group name is read out and displayed on the liquid crystal display section 4 (Sr1).

Here, by pressing the key assigned to the forward key for searching in the keyboard 5, the control cable 21
reads and displays the next group name, and presses keyboard 5.
By pressing the key assigned to the backward key for searching within, the control element 21 reads and displays the previous group name. Therefore, by operating these keys, you can search for the group name to which the data you want to refer to belongs, and when the group name to which the data you want to refer to is displayed, press the selection key on the keyboard 5 to perform the selection process. By pressing the key assigned to , select the displayed group name (Sr
1).

When a group name is selected, the control element 21 reads out the first data name in the data name 34 of referable data in the selected group stored in the area 31 of the data memory 22, and displays it on the LCD. Display on display section 4 (Sr1)
. Here, whether the data is referable or not is determined by the control element 21 checking the corresponding flag 36 stored in the area 31 of the data memory 22. For example, if the flag is "1", it is determined that reference is possible, and if the flag is "0", it is determined that reference is not possible.

Here, similarly to the selection of the group name, by pressing the forward key for searching, the control element 21 reads out and displays the data name of the next referenceable data, and moves backward for searching. By pressing the key, the control element 21
reads and displays the data name of the previous referenceable data. Therefore, by operating these keys, you can search for the data name of the data you want to refer to, and when the data name of the data you want to refer to is displayed, you can select the displayed item by pressing the selection key that performs the selection process. Select the data name that exists (Sr1). Then, the control element 21 transfers the data content corresponding to the selected data name to the data content 35 stored in the area 31 of the data memory 22.
The data is read out from and displayed on the liquid crystal display section 4 (Sr1). Thereby, the data to be referenced can be viewed on the liquid crystal display section 4.

Next, a detailed explanation will be given with reference to a display flowchart illustrating a display screen and various processing keys shown in FIG. In this flowchart, the data reference key for entering the data reference mode is the multiplication key 13, and the forward key for searching is the next key 1.
0. Backward for search + -wo/(Tsuku key 11. Yes key 14 for selection process, key for returning to the previous state from the current state and displaying the previous display content. No key 15. For example, when a selection is made by mistake in the selection process, the no key 15 is set to 1.
This is necessary to return to the previous search process, or to refer to another data content after referring to a certain data content.

Before the power is turned on, nothing is displayed on the liquid crystal display section 4 (
DPI), when the yes key 14, which is the startup key, is pressed, power is supplied to each part from the battery 7, and a guide bone prompting menu selection, for example, "Menu?" is displayed (
DO2). Here, when the no key 15 is pressed, the power supply is cut off and the state returns to the state before the power was turned on (DPI), and when the multiplication key 13, which is the data reference key, is pressed, the first group name is displayed after "Group-". displayed (DP3
).

Here, next key 10 is the forward key for searching.
When you press , the second group name is displayed after "Group-" (DP4), and when you press the back key 11, which is the back key for searching, the last group name is displayed after "Group-" (DP4). DP5), when the no key 15 is pressed, the screen returns to the previous state (DP2) displaying the guidance text prompting menu selection.

For example, if you search for a second group name using the next key 10 and back key 11 and then press the selection key YES key 14, the first referenceable data among the data names belonging to the second group name will be searched. The data name is displayed (D P 6).

Here, when you press the Netast key 10, which is the forward key, the data name of the second referable data is displayed (DP
7) When you press the back key 11, which is the back key, the data name of the last referable data is displayed (DP8).
, when the no key 15 is pressed, the screen returns to the previous state, the group name display 1IIIj (DP4).

For example, when a second referenceable data name is searched for using the netast key 10 and the back key 11 and the selection key YES key 14 is pressed, the data contents of that data name are displayed (DP9). If the no key 15 is pressed while the data contents are displayed, the display returns to the previous state, the data name display screen (DP7).

In this way, by operating the keyboard 5, data in the area 31 of the data memory 22 can be selectively transferred to the liquid crystal display section 4.
can be displayed and referenced.

Furthermore, if there is data that is prohibited from being referenced, it can be made unreferenceable by the flag 36, thereby preventing unauthorized attempts to reference particularly important data.

[Effects of the Invention] As described in detail above, according to the present invention, it is possible to provide a portable electronic device that can selectively display and refer to arbitrary data.

[Brief explanation of the drawing]

The figures are for explaining one embodiment of the present invention, and FIG. 1 is a flowchart explaining data reference processing, and FIG. 2 is a display flowchart specifically explaining data reference processing.
FIG. 3 is a configuration diagram of the data memory, FIG. 4 is a block diagram showing the circuit configuration of the IC card, and FIG. 5 is a schematic configuration diagram of the IC card. 2...Integrated circuit, 3...Contact section, 4...Liquid crystal display section (display section), 5......
-Keyboard (operation keys), 21... Control element (control unit), 22... Data memory (memory unit), 23... Program memory. Applicant's representative Patent attorney Takehiko Suzue Figure 1 Figure 2 (a) Figure 12 (b) Figure 3 Figure 114

Claims (1)

[Scope of Claims] A memory section in which a plurality of data are stored in groups; operation keys for displaying data; and a display section for displaying data; A portable electronic device comprising: a control section that selects a group of data stored in the memory section based on an operation, and displays data in the selected group on the display section.