Background of the Invention
The present invention relates to a mode convexsion method for a multifunctional programmable remote controller for the control of household appliances, and particularly to a mode conversion method which performs input/output of control data in a multifunctional programmable remote controller that has multibrand remote control (MBR) and learning functions.
An ordinary multifunctional programmable remote controller is able to learn, store and retransmit a remote control code transmitted from the other individual remote controller in order to combine the control of a television set, a cable converter, a video cassette recorded, a video disk player and the like. The multifunctional remote controller includes an infrared receiver, a microprocessor, a memory composed of a ROM and RAM, an infrared transmitter, a liquid crystal display and a keypad for inputting the user's desired data. The application program of the microcomputer is divided into the categories of learning, storing, transmitting and user interface.
The learning function according to the microprocessor's application program must be repeated at least twice in order to precisely receive and read a signal transmitted from an ordinary remote controller. Then, when the learning function is carried out and the data is read, it is compressed to fit the capacity of the data memory for use later. The remote controller having a multi brand remote control function (MBR function) is also developed, whereby various electronic appliances (multi brand) can be controlled with a single remote controller whenever the user presses a code number of a designated product after storing an operating condition of the remote controller of the designated product according to the code numbers of various electronic appliances into the memory or a recording medium by using the conventional multifunctional remote controller as described above. However, when the remote controller having learning and MBR functions is manufactured by simply adding two functions, it becomes complicated in design and voluminous in appearance, thereby failing to meet the respective user's expectations.
Summary of the Invention
Therefore, to solve the above problem, it is an object of the present invention to provide a mode conversion method for a multifunctional programmable remote controller to which an MBR function is added to control ordinary household electronic equipment by storing the applicable brand code in a programmable remote controller having a learning function capable of easily controlling a plurality of household electronic appliances, thereby satisfying a variety of users' demands.
To attain the above object of the present invention, there is provided a mode conversion method for a multifunctional programmable remote controller comprising the steps of:
converting a waiting mode of the multifunctional programmable remote controller into an operating mode, and then, scanning the input keys to detect which key among a mode key, a set key and normal keys has been pressed;
checking a present setting condition of a set key when any key signal has not been input in the above key scanning step, so that if a setting mode is not in progress, the power is turned off and the operating mode is converted back to the waiting mode, and if the setting mode is in progress, checking whether a certain time is elapsed to thereby proceed to the key scanning step if the certain time is not elapsed and turning the power off after the mode is displayed according to a current input mode and converted into a using mode if the certain time has elapsed;
checking whether a mode key has been pressed in the key scanning step, and checking the present setting condition of the set key if the mode key has been pressed, so that if the setting mode is not in progress, each mode display is toggled to indicate that a mode conversion has occurred and then the power is turned off, and if the setting mode is in progress, the procedure returns to the scanning step;
determining whether the current mode is a using mode or a setting mode if the set key has not been selected when the mode key has not been pressed in the key scanning step, so that if it is in the using mode, data is displayed in a display unit 2 by each of the modes according to whether the present mode is a multi brand remote control mode or a learning mode and the power is turned off; and if it is in the setting mode, the related data is processed and displayed according to whether the present mode is the learning mode or the multi brand remote control mode, and then are stored in a memory, and the procedure returns to the scanning step;
checking the present setting condition of the set key when the set key has been pressed in the key scanning step, so that if the setting is not in progress, each mode display is flashed for the present mode and the mode is converted into the setting mode, and the procedure returns to the key scanning step; and if setting is in progress, when the present mode is the learning mode, the result of the learning mode data setting completion is displayed in the display unit 2 and the mode is converted into the using mode and when the present mode is the multi brand remote control mode, it is checked whether the set data is valid data, whereby if it is valid, the valid data is processed and stored in the memory, and if it is not valid, the error is displayed in the display unit and the result of the multi brand remote control mode data setting completion is displayed, and the power is turned off after conversion to the using mode.
Brief Description of the Drawings
The above object and other advantages of the present invention will becomes more apparent by describing in detail a preferred embodiment of the present invention with reference to the attached drawings in which:
FIG. 1 is a block diagram of an apparatus for performing a mode conversion method for a multifunctional programmable remote controller according to the present invention;
FIGS. 2A, 2B and 2C are flow charts of a program for the mode conversion method of a multifunctional programmable remote controller according to the present invention;
FIGS. 3A through 3G illustrate display states for performing the learning mode conversion method according to the program as shown in FIGS. 2A through 2C; and
FIGS. 4A through 4D illustrate display states for performing the MBR mode conversion method according to the program as shown in FIGS. 2A through 2C.
Detailed Description of the Invention
Referring to FIG. 1, the apparatus for performing the mode conversion method of a multifunctional programmable remote controller according to the present invention transmits, to a microcomputer 8, a key signal selected by scanning through a key matrix circuit (not shown) the input key data supplied from the keypad 1 that is connected to a microprocessor 8. Then, the microprocessor 8 in a learning mode controls a data signal input through a light receiving device 6 connected to a receiver 3 and displays each separate function on display device 2, and stores the data in the RAM 5'. The microprocessor 8 operates application programs stored in ROM 5 in accordance with a key signal selected from keypad 1, and temporarily stores various data corresponding thereto in RAM 5'. Then, microprocessor 8, in a using mode, transmits data to the transmitter 4; and the transmitter 4 transmits the data using the light emitting device 7.
On the keypad 1, a mode key, a set key, numerical keys, function selection keys, and basic operating keys are arranged into addition a mute key, a recall key and volume adjustment keys, and so on. The key arrangement on the keypad 1 in accordance with the present invention is briefly shown in FIG. 1 for the sake of convenience. Here, the mode key is used in selecting the MBR mode or the learning mode, and the set key is used in selecting a using mode or a setting mode . The mode key and set key are toggle keys which select one mode when pressed first, and select the other mode when pressed again. The rest of the keys are normal keys which include numeric keys, function selecting keys and basic operating keys.
FIGS. 2A, 2B and 2C are flow charts of the mode conversion method for a multifunctional programmable remote controller according to the present invention.
Referring to FIGS. 2A, 2B and 2C, since the microprocessor 8 as shown in FIG. 1 is connected to operate when any key of the keypad 1 is pressed, when the power is turned on, to convert a waiting mode into an operating mode as shown in FIG. 2A in step 100. In step 100, the user selects a desired mode by pressing the mode key or the set key on the keypad 1 and sets the desired data according to the selected mode in the operating mode of the multifunctional programmable remote controller. If the desired data are completely set, the mode of the multifunctional programmable remote controller according to the present invention is converted into a using mode, whereby the user can control the respective household appliances. In step 100, the waiting mode is converted into the operating mode only in use, thereby minimizing a power consumption when the remote controller is not in use. After step 100, when the waiting mode is converted into the operating mode, the microprocessor 8 scans the key matrix in step 101 and checks whether a key signal has been input or not in step 102. If the key input signal was not detected in the step 102, step 103 determines whether or not the setting step is in progress as shown in FIG. 2B. If the setting step is not in progress, the power is turned off and the operating mode is converted into the waiting mode in step 139, and if the setting step is in progress, step 104 checks whether or not the specified setting time has elapsed. When a specified setting time has not elapsed in step 104, the program returns to the key scanning step 101. If the specified setting time has elapsed, the microprocessor determines which mode is selected in step 105. If a learning mode is selected as a current selected mode in step 105, the word "LEARN" is normally displayed in a display unit of step 106; and if a MBR mode is selected, "MBR" is normally displayed in the display unit 2, respectively. When steps 106 and 107 are completed and the remote controller is converted into the using mode in step 108, the power is turned off and the operating mode is converted into the waiting mode in step 139.
Meanwhile, when the key signal input condition exists in step 102, step 109 checks whether a mode key has been pressed. If step 109 determines that the mode key has been pressed, step 110 checks whether the current state of the mode key is in a setting state or not. If the setting is in progress, the microprocessor 8 returns to step 101 and scans the key matrix. If the setting is not in progress, step 111 of the microprocessor determines what mode is currently being carried out. In step 111, when the learning mode has been selected, "MBR" is displayed in step 112; and when MBR has been selected, "LEARN" is displayed in step 113. Then the power is turned off and the operating mode is converted into the waiting mode in step 139.
In step 109, when the mode key has not been pressed, step 109 goes to step 114 to determine whether or not the set key has been selected and if one of the normal keys such as the numeric keys and the function selection keys, not the set key, is selected, the microprocessor 8 determines in step 115 whether the present mode is either the using mode or the setting mode as shown in FIG. 2C. When it is determined in step 115 that the using mode has been selected, step 116 determines the state of the mode which is being carried out and if the learning mode is being carried out, or the MBR mode is being carried out, learning data or MBR data are output and displayed, respectively in step 117 or 118, and then the power is turned off and the operating mode is converted into the waiting mode in step 139. When step 115 determines that the setting mode has been selected, step 119 then determines the state of the mode which is being carried out again and if the MBR mode is being carried out, step 120 carries out a ten key process and display and then returns to the key scanning step 101. When step 119 determines that the learning mode is being carried out, the word "LEARN" is quickly flashed on the display unit 2 in step 121. When the word "LEARN" is flashed quickly in step 121, the word data are input in step 122, and when the word "LEARN" is displayed normally in step 123, the learning data is processed in step 124, then after the word "LEARN" is flashed again in step 125 the program returns to the key scanning step 101.
As illustrated in FIG. 2A, when the set key is pressed in step 114, step 126 checks whether the current state of the set key is in a setting state or not. If setting is not in progress in step 126, it checks the mode which is being carried out in step 127, and if the MBR mode is being carried out, or if the learning mode is being carried out, the word "MBR" or "LEARN" is flashed in steps 128 or 129, respectively and the microprocessor 8 returns to the key scanning step 101 after converting to the setting mode in step 130. Meanwhile, in step 126, if setting is in progress, the current mode state is again checked in step 131 and if the learning mode has been selected, "LEARN" is displayed normally in step 132. If the MBR mode has been selected in step 131, step 133 checks the data, and thereafter step 134 determines the validity of that data.
If the MBR mode data in step 134 is not valid, the word "ERROR" is displayed for a certain duration of time in step 135, and if the data is valid, it is processed in step 136. After steps 135 and 136 are processed, "MBR" is again displayed normally in step 137, After the word "LEARN" or "MBR" is displayed and processed in steps 132 and 137, respectively, a conversion to the using mode occurs in step 138, and then power is turned off and the operating mode is converted into the waiting mode in step 139.
FIG. 3A through 3G illustrate the mode conversion method in the learning mode, FIG. 3A shows a case of displaying "LEARN" by means of the mode key when a multifunctional programmable remote controller controls a compact disk. When the set key is pressed in the state of FIG. 3A, the microprocessor 8 is in the learning mode and the word "LEARN" is flashed at a period of one Hz as shown in FIG. 3B. in the state as shown in FIG. 3B, the multifunctional programmable remote controller faces a remote controller to learn its program and a key position to learn is selected (For example, to control power to a VTR ). Then, when a key position is designated, a "VTR" key, being one of the function selection keys is pressed and when an "ON/OFF" key on the key matrix is pressed, the word "LEARN" is flashed at 2 Hz periods in a state as shown in FIG. 3C. When there are other states as shown in FIG. 3C, a key of other remote controller is pressed to cause the learn process and the word "LEARN" is displayed normally as shown in FIG. 3D. After the state is displayed as shown in FIG. 3D, in order to enable a completion of an input and re-learning mode, the word "LEARN" must be flashed every one Hz as shown in FIG. 3E. In order to learn another function according to the above method, the procedure is repeated from a beginning with the state as shown in FIG. 3C, and when an input error occurs after the word "ERROR" is displayed as shown in FIG. 3F, a state as shown in FIG. 3C is brought about. At this time, "ERROR" of FIG. 3F is continuously displayed for a certain time. To complete a learning process the set key is pressed, or a state as shown in FIG. 3G automatically occurs after a certain time has elapsed. To enable the output of the learned content, a key selected controlled is pressed in a state as shown in FIG. 3A.
FIGS. 4A through 4D show state diagrams for performing an MBR mode conversion method. When a multifunctional remote controller controls audio equipments, the "MBR" mode is selected as shown in FIG. 4A by means of the mode key. In the state of FIG. 4A, when a set key is pressed, the word "MBR" as shown in FIG. 4B is flashed to enable an input condition for the MBR data code. At this time, if there is no input in a state as shown in FIG. 4B, the state automatically returns to that of FIG. 4A after a certain time has elapsed. If the state completed as shown in FIG. 4B, then, two digit data code for each electronic product is input as shown in FIG. 4C For example, a data code may be 30). To select a data code in FIG. 4C, a set key must be pressed to indicate an input completion. In the case of a normal code, the state is displayed as shown in FIG. 4A. At this time, should the case be that the data code of FIG. 4C is wrong, the word "ERROR" is displayed as shown in FIG. 4D, and the state returns to that of FIG. 4A after a certain time has elapsed.
As described above, the mode conversion method of the present invention can carry out not only learning function which stores the desired functions only from among numerous functions of remote controllers of a variety of electronic products but also can carry out MBR functions with a single remote controller by entering appropriate data codes to match an operating condition of a remote controller of the desired electronic appliance, thereby fulfilling user's demand for combining various functions.
While the invention has been particularly shown and described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.