KR0145871B1 - Time alarming system - Google Patents

Abstract

[Technical field to which the invention described in the claims belong]

Visual alarm function of the cellular terminal system

[Technical Challenges to Invent]

In the cellular terminal system performs a visual alarm without the addition of a separate visual alarm function circuit.

[Summary of the solution of the invention]

Setting an alarm setting flag and storing the input alarm time data when an alarm key and an alarm time for setting an alarm function are input in a key matrix; Updating the system time after storing the system time obtained from the synchronization channel message received from the base station in a memory; If the alarm time data and the updated system time match, clearing the alarm setting flag and issuing an alarm command for an alarm.

[Important Uses of the Invention]

It is used for visual alarm function of cellular terminal system.

Description

Visual alarm method in cellular terminal system

1 is a block diagram of a conventional cellular terminal system.

2 is a block diagram of a cellular terminal system according to the present invention.

3 is a control flowchart for performing a visual alarm function according to an embodiment of the present invention.

The present invention relates to a cellular terminal system having a visual alarm function, and more particularly, to a method of providing a visual alarm set to a user without adding an external circuit related to the visual function.

In general, a cellular terminal system is a device that performs communication by receiving a radio frequency signal provided from a base station. Such a terminal system has recently been gradually miniaturized and lightweight. On the other hand, the terminal system is a situation that the implementation requirements for more additional functions are increased.

1 is a block diagram of a typical conventional cellular terminal system. Referring to FIG. 1, the high frequency signal captured by the antenna is applied to the RF amplifier 12 only the signal of the required band through the duplex filter 10. The RF amplified signal is provided to the IF amplifier 14 to be converted to an intermediate frequency, and then converted into a digital signal for processing by the CPU 20. The CPU 20 operates by receiving power from the battery 16, and performs various operations for communication of a call by accessing a program in the ROM 24. The received call signal is picked up by a user's ear with a handset not shown by the control of the CPU 20. On the other hand, the user's voice signal introduced into the transmitter is amplified again through the RF amplifier 12, and then radiated to the antenna through the duplex filter 10. The base station receives the radio frequency signal radiated from the antenna and provides the voice to the receiver's handset through a trunk line switch connected by wire. The watchdog 22 is a part provided to check whether or not a certain signal exists for a certain time while the CPU 20 executes a program. The RAM 26 is a volatile memory, and is a device that holds a work data area for call communication of the CPU 20. An EEPROM (or E ² PROM) is an electrically erasable program ROM memory that stores its calling code and other auxiliary programs. The display unit 30 is usually made of a liquid crystal display element, and displays display data provided by the CPU 20 as letters or numbers.

The conventional cellular terminal system shown in FIG. 1 has a Time Alarm function to the user for the implementation of additional functions apart from the communication of the call. When the CPU 20 receives the time data provided from the real time clock unit 18 and compares the time data with a preset time, the CPU 20 displays on the display unit 30 or generates an alarm sound through a speaker not shown. It was to send. Thus, it can be seen that the conventional cellular terminal system requires the real time clock unit 18 as shown in FIG. 1 to achieve the additional visual alarm function. The real time clock unit 18 is a semiconductor device composed of one chip, but occupies the size of the system when attached to an actual circuit, and the cost is increased.

In the conventional cellular terminal system, a time alarm function can be implemented by adding an external circuit such as a real-time clock unit, but there are disadvantages that lead to a problem that is contrary to the trend of miniaturization and lightening of the cellular terminal system and an increase in manufacturing cost. Therefore, studies to implement the above-described visual alarm function without the addition of external circuits have been steadily progressing in the field.

Accordingly, an object of the present invention is to provide a visual alarm method of a cellular terminal system that can solve the conventional problems as described above.

Another object of the present invention is to provide a method for alerting a user to a preset time without providing a time-related circuit element such as a real time clock in a cellular terminal system.

In order to achieve the above objects, the present invention sets an alarm setting flag in response to an input of an alarm key for setting an alarm function from a key matrix in a cellular terminal system, and displays a numeric key input simultaneously with the input of the alarm key. Storing data; Receiving a sync channel message from a base station, obtaining a system time from the received sync channel message, and storing the system time in a memory; Periodically updating the stored system time; Comparing the stored alarm time data with the updated system time; And when the alarm time day coincides with the updated system time, clearing the alarm setting flag and issuing an alarm command for an alarm.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals have the same reference numerals as much as possible even if displayed on different drawings. Also, in the following description, many specific details such as components of specific circuits are shown, which are provided to help a more general understanding of the present invention, and the present invention may be practiced without these specific details. It will be self-evident to those of ordinary knowledge in Esau. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. In particular, although the embodiment of the present invention illustrates a case of a cellular terminal system, the same method may be applied to a similar field. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the scope of the following claims, but also by the equivalents of the claims.

FIG. 2 is a block diagram of a cellular terminal system according to the present invention, and implements a visual alarm function using only the illustrated configuration without the addition of a separate external circuit such as the ringer time clock unit 18 illustrated in FIG. And, for the visual alarm function according to the present invention, the key matrix 32 is provided with an alarm key for setting an alarm function. If the numeric key provided for normal dialing is pressed after the alarm key is pressed on the key matrix 32, this number key is input as an alarm type.

The flags used in the cellular terminal system according to the present invention are update flags and alarm setting flags, which can be temporarily set by the RAM 100 by the CPU 100. In addition, the cellular terminal system according to the present invention stores the control program according to the flow as shown in FIG. 3 in the ROM 24, and the CPU 100 loads the control program to provide a visual alarm function according to the present invention. Performs control operations to implement

That is, the present invention focuses on checking the time in a manner without adding a special external circuit, and the specific implementation method is achieved by the flow of FIG.

A method of alarming a set time without providing a separate visual function circuit in a cellular terminal system according to an embodiment of the present invention will be described with reference to FIGS. 2 and 3. When the power key on the key matrix 32 is pressed in the first step, the CPU 100 detects this and enters the initialization sub-state of the fifth step. In the fifth step of the initialization substate, the CPU 100 performs various initialization tasks for driving the system, and also enables the system timer interrupt. Further, in the fifth step, the CPU 100 clears the 15 second counter.

The user can input the alarm time from the fifth step, and the routine which receives the time input is performed in a sub state other than the sub states shown in FIG.

The procedure for setting the alarm time in the cellular terminal system according to the present invention is as follows. When a key for setting an alarm function is input from the user through the key matrix 32, the CPU 100 sets an alarm setting flag and enters an alarm setting mode. When the user presses the numeric key provided for dialing on the key matrix 32 after entering the alarm setting mode, the CPU 100 uses the pressed numeric key as the input alarm time data to the RAM 26. Save it.

In steps 10, 11 and 13, the cellular terminal system searches for a pilot channel for 15 seconds for communication with the base station. In step 10, the cellular terminal system attempts to acquire a pilot channel for communication with a base station. In the eleventh step, the CPU 100 determines whether the pilot channel has been acquired in the tenth step. If the pilot channel is not obtained, in step 13, the CPU 100 determines whether the 15 second has elapsed by the 15 second counter. If no pilot channel is found within 15 seconds, the CPU 100 returns to the system initialization sub state of the fifth step.

On the other hand, if the pilot channel is found within 15 seconds, the CPU 100 clears the 1 second counter in step 12.

After finding the pilot channel, the cellular terminal system according to the present invention performs steps 15 to 17 to determine whether a synchronization channel message is received from the base station within one second. In step 15, the cellular terminal system obtains a synchronization channel from the base station that obtained the pilot channel. In step 16, the CPU 100 determines whether a synchronization channel message is received through the obtained synchronization channel. In the CDMA cellular mobile communication system to which the present invention is applied, the sync channel message is a system parameter. The system parameters include the time of the pilot PN sequence of the base station and the data rate of the calling channel as related to the system time, as published on page 64 of the title CDMA mobile phone technology published in January 1994 by Pohang Iron & Steel Co., Ltd. .

In the seventeenth step, the CPU 100 determines whether the one second has elapsed by the one second counter. If one second has not elapsed in the seventeenth step, the CPU 100 performs the operation from the fifteenth step again. On the contrary, if it is determined in step 17 that the synchronization channel message has not been acquired through the synchronization channel for one second, the CUP 100 re-enters the sub-state of the fifth step.

If it is determined in step 16 that the sync channel message has been received without error, in step 18, the CPU 100 obtains a system time from the received sync channel message, stores the system time in the RAM 26, and receives the received time. It also stores variable values. In addition, in step 18, the CPU 100 sets a timer to increase the obtained system time. The update flag is set by setting the timer. The update flag is for updating the system time obtained from the sync channel message to the current time. When the update flag is set, the CPU 100 periodically updates the acquired system time to the current time until it is determined that the alarm time has been reached in step 40 to be described later.

In the idle state of the twentieth step, the CPU 100 executes a number of subroutines to perform various functions of the cellular terminal system. In the idle state, the cellular terminal system performs various functions and performs steps 25 to 45 for the visual alarm function according to the present invention.

In step 25, the CPU 100 checks whether the timer for increasing the system time has set an update flag. If the update flag is set, in step 30 the CPU 100 updates the system time by calculating the current time and storing it in the RAM 26.

In step 35, the CPU 100 determines whether an alarm setting flag is set. If it is determined in step 35 that the alarm setting flag is set, the CPU 100 enters step 40. If it is determined that the alarm setting flag is not set, the CPU 100 enters step 20. Here, the setting of the alarm setting flag means that the visual alarm function is currently set in the cellular terminal system.

If the alarm setting flag is set, the CPU 100 compares the system time (current time) calculated in the thirtieth step with the alarm time data set by the user in step 40 and determines whether the alarm setting data is identical. If it is determined in step 40 that the currently calculated system time matches the alarm time data, in step 45 the CPU 100 clears the set flags and sends an alarm command informing that the alarm time is reached. That is, the CPU 100 compares the calculated system time (current time) with the set alarm time, and if the coincidence is matched, clears the alarm setting flag and the update flag. In this case, a function of informing the user of the set time is performed. As a method, a display or pre-recorded voice is used on the display unit 30. This can be done in several ways, such as by throwing or using tone sounds.

As described above, according to the present invention, since a predetermined time can be alarmed to the user without having a time-related circuit such as a real-time clock part, the system can be provided to the user without shortening and reducing the system. Since a predetermined time can be alarmed, it is possible to reduce the light weight and cost of the system.

As described above, the present invention has been described and limited by way of example with reference to the drawings, but the same will be apparent to those skilled in the art that various changes and modifications can be made without departing from the technical spirit of the present invention. will be.

Claims (4)

12. A method for visual alarming a cellular terminal system having at least a key matrix having a numeric key for dialing and an alarm key for setting an alarm function, the method comprising: receiving a synchronization channel message from a base station; A first step of setting an alarm setting flag in response to the alarm key being input, and storing numeric keys input on the key matrix together with the alarm key as alarm time data; Obtaining a system time from the received sync channel message and storing the system time in a memory; Periodically updating a system time stored in the memory; A fourth step of comparing the alarm time data with the updated system time; And a fifth step of clearing the alarm setting flag and issuing an alarm command for an alarm when the alarm time data and the updated system time are compared with each other. The method of claim 1, wherein in the fifth step, the alarm for the alarm is displayed as text or transmitted as a sound. The method of claim 1, wherein in the third step, the periodically updated system time is a current time. CLAIMS 1. A method for visual alarming a cellular terminal system having at least a key matrix having a numeric key for dialing and an alarm key for setting an alarm, the method comprising: receiving a synchronization channel message from a base station; Setting an alarm setting flag in response to the alarm key being input, and storing, together with the alarm key, a numeric key input on the key matrix as alarm time data; Storing the system time obtained from the received sync channel message in a memory; Setting an update flag to update the stored system time to a current time; Updating the system time by calculating a current time according to the setting of the update flag and storing it in the memory; periodically comparing the alarm time data with the updated system time; When the alarm time data and the updated system time are matched, the alarm setting flag and the update flag are cleared, and an alarm command for an alarm or an alarm sound for the alarm is output. How to.