Abstract:
Disclosed is a method for remote control of electronic products using a portable terminal. The portable terminal performs a remote control function in the remote control mode. When communication is tried during the remote control mode, the portable terminal terminates the remote control mode and displays the communication state to provide a communication service upon a user&#39;s selection. When the communication ends, the portable terminal returns to the remote control mode.

Description:
PRIORITY 
       [0001]    This application claims priority from Korean Patent Application Serial No. 2003-39421 entitled “Portable Terminal and Method for Remote Control of Electronic Products” filed in the Korean Intellectual Property Office on Jun. 18, 2003, and U.S. patent application Ser. No. 10/681,107, filed Oct. 9, 2003, the content of both of which are hereby incorporated by reference in their entirety. 
     
    
     BACKGROUND OF THE INVENTION 
       [0002]    1. Field of the Invention 
         [0003]    The present invention relates to a portable terminal having a remote control function, and more particularly to a portable terminal having a remote control function and a method for remote control of electronic products using the portable terminal 
         [0004]    2. Description of the Related Art 
         [0005]    As generally known in the art, a remote controller refers to a device for controlling an instrument or a machine from a distance. Many currently available electronic products are provided with a remote controller. A user can control various functions of an electronic product using a remote controller from a distance, without the need to directly operate the product. In most cases, however, different remote controllers are used to control different kinds of electronic products or the same kinds of electronic products of different manufacturers. In other words, the user can control only a single product using one remote controller. Different remote controllers should be used according to the kinds of electronic products, such as an audio system and a video system, and the manufacturers of the products. Accordingly, when a remote controller for a particular electronic product of a particular manufacturer has been lost, the user typically must purchase a new remote controller for the same product. Also, users can be inconvenienced when urgently seeking a lost remote controller for operating a particular electronic product. 
       SUMMARY OF THE INVENTION 
       [0006]    Accordingly, the present invention has been made to solve the above-mentioned problems. One object of the present invention is to provide a portable terminal and a method for remote control of electronic products, regardless of the kinds or manufacturers of the products. Another object of the present invention is to provide a method for enabling communication during the remote control of electronic products using a portable terminal. 
         [0007]    In order to accomplish the above objects, embodiments of the present invention provide a method for remote control of electronic products using a portable terminal, said method comprising the steps of performing a remote control of functions of the electronic products in a remote control mode; when communication is tried during the remote control mode, terminating the remote control mode and displaying the communication standby state to provide a communication service upon a user&#39;s selection; and when the communication ends, returning to the remote control mode. 
         [0008]    In accordance with another aspect of the present invention, there is provided a method for performing a remote control in a remote control mode of a portable terminal, said method comprising the steps of displaying the kinds of electronic products controllable by a remote controller; displaying the manufacturers of the electronic products; selecting at least one kind of the displayed electronic products; selecting at least one of the displayed manufacturers; setting a remote control mode suitable for the selected electronic product of the selected manufacturer; performing a remote control function in the remote control mode; and terminating the remote control mode to terminate the remote control function. 
         [0009]    In accordance with still another aspect of the present invention, there is provided a portable terminal for remote control of various functions of electronic products, which comprises a display section for displaying the kinds and manufacturers of electronic products controllable by a remote controller; a generalized programming input/output port for oscillating a remote control pulse according to a selected manufacturer; an infrared (IR) modulating/sending section for modulating the oscillated remote control pulse to an infrared ray and sending the infrared ray; and a control section for determining whether communication is tried during implementation of a remote control function, terminating the remote control function to implement a communication function when the communication is initiated, and performing the remote control function again when the communication ends. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0010]    The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawing figures, in which: 
           [0011]      FIG. 1  is a block diagram of a portable terminal having a remote control function according to a first embodiment of the present invention. 
           [0012]      FIG. 2  is a flow chart showing a process of performing a remote control function in a portable terminal according to the first embodiment of the present invention. 
           [0013]      FIG. 3  shows the information displayed on a display section of a portable terminal according to the first embodiment of the present invention. 
           [0014]      FIG. 4  is a flow chart showing a process of performing a remote control function in a portable terminal according to a second embodiment of the present invention. 
           [0015]      FIG. 5  is a flow chart showing the operation of a control section of a portable terminal to perform a communication function during a remote control mode according to the first embodiment of the present invention. 
           [0016]      FIG. 6  shows the function of a key input section of a portable terminal according to the first embodiment of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
       [0017]    Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawing figures. In the following description of embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. 
         [0018]      FIG. 1  is a block diagram of a portable terminal having a remote control function according to the first embodiment of the present invention. Referring to  FIG. 1 , an RF section  110  performs a communication function of a portable terminal The RF section  110  comprises an RF transmitter for performing upward conversion and amplification of the frequency of a signal, which is being transmitted, and an RF receiver for amplifying a signal, which is being received, with low noise and performing downward conversion of the frequency of the signal. A data processing section  109  comprises a transmitter for coding and modulating a signal which is being transmitted and a receiver for demodulating and decoding a signal which is being received. The data processing section  109  may be composed of a modem and a codec. 
         [0019]    An audio processing section  107  reproduces an audio signal outputted from the data processing section  109  or transmits an audio signal generated from a microphone to the data processing section  109 . A key input section  103  is provided with keys for inputting numbers and characters and function keys for setting up various functions. 
         [0020]    According to embodiments of the present invention, the functions keys may refer to a remote controller setting key, a product setting key, a product selection key, a manufacturer setting key, a manufacturer selection key, an OK key, a cancel key and so on. The functions keys may include a navigation key for moving a cursor on the display, a selection key, an OK key for confirmation, a cancel key for cancellation, and so on. As will be appreciated by those of ordinary skill in the art, it is possible to implement a particular function by pressing a combination of two or more function keys. 
         [0021]    A memory  105  may be composed of a program memory and a data memory. The program memory includes programs for controlling general operations of the portable terminal. The data memory stores information for performing a remote control function according to embodiments of the present invention. Also, the data memory can temporarily store data generated during implementation of the above programs. 
         [0022]    A control section  111  controls the overall operation of the portable terminal. As will be understood by those of ordinary skill in the art, the control section  111  may optionally include the data processing section  109 . The control section  111  may also include a generalized programming input/output port (“GPIO port”). The GPIO port generates a frequency, for example, in the range of 30 KHz to 60 KHz. When provided outside of the control section  111 , the GPIO port can be connected to an inside element of the portable terminal The GPIO port oscillates a remote control pulse suitable for the selected kind and manufacturer of electronic product in accordance with a key signal inputted from the key input section  103 . An IR modulating/sending section  120  modulates the remote control pulse oscillated by the GPIO port to an infrared ray and transmits the infrared ray from the portable terminal (preferably to the electronic product to be remote-controlled). The process of modulating a remote control pulse to an infrared ray can be performed at the control section  111 . A display section  101 , which may comprises a liquid crystal display (LCD), displays information relating to the remote control mode under the control of the control section  111 . 
         [0023]      FIG. 2  is a flow chart showing a process of performing a remote control function in a portable terminal according to the first embodiment of the present invention.  FIG. 3  shows the information displayed on a display section of a portable terminal according to the first embodiment of the present invention.  FIG. 6  shows the function of a key input section of a portable terminal according to the first embodiment of the present invention. Hereinafter, the remote control mode and function according to embodiments of the present invention will be explained with reference to  FIGS. 1 ,  2 ,  3  and  6 . 
         [0024]    At step  201 , the control section  111  determines whether the portable terminal is in a remote control mode. If the portable terminal is in the remote control mode, the control section  111  will proceed with step  205 . Otherwise, the control section  111  will maintain the initial state of the portable terminal. The remote control mode is a mode for implementing functions required for remote control, for example, a remote controller setting suitable for a selected electronic product of a selected manufacturer, a remote control implementation and a remote control termination. 
         [0025]    At step  205 , the control section  111  determines whether a key signal is inputted from the key input section  103 . If a key signal for setting the remote controller is inputted, the control section  111  will proceed with step  207 . Otherwise, the control section  111  will proceed with step  227 . At step  207 , the control section  111  converts the portable terminal to a remote controller setting mode and controls the display section  101  to display the remote controller setting mode. The display section  101  can display the remote controller setting mode as shown in  FIG. 3(   a ). 
         [0026]    At step  209 , the control section  111  determines whether a key signal is inputted from the key input section  103 . If a key signal for product setting is inputted, the control section  111  will proceed with step  211 . Otherwise, the control section  111  will proceed with step  219 . At step  211 , the control section  111  controls the display section  103  to display the kinds of electronic products controllable by a remote controller and proceeds with step  213 . As shown in  FIG. 3(   b ), the display section  103  can display various kinds of electronic products, including televisions (TV), cable televisions (CATV), video cassette recorders (VCR), audio systems, radios and others which can be any kind of electronic products controllable by a remote controller, including air conditioners and refrigerators. 
         [0027]    At step  213 , the control section  111  determines whether a key signal is inputted from the key input section  103 . If a key signal for product selection is inputted, the control section will set a kind of electronic product as selected by the user at step  215  and will proceed with step  217 . Otherwise, the control section will repeat step  211 . 
         [0028]    At step  219 , the control section  111  determines whether a key signal is inputted from the key input section  103 . If a key signal for setting the manufacturer is inputted, the control section  111  will control the display section  101  to display the manufacturers at step  221  and will proceed with step  223 . The display section  101  can display the manufacturers as shown in  FIG. 3(   c ). If no key signal for manufacturer setting is inputted, the control section  111  will repeat step  207 . 
         [0029]    At step  223 , the control section  111  determines whether a key signal is inputted from the key input section  103 . If a key signal for manufacturer selection is inputted, the control section will set a manufacturer as selected by the user at step  225  and will proceed with step  217 . Otherwise, the control section  111  will repeat step  221 . 
         [0030]    At step  217 , the control section  111  establishes a remote controller setting suitable for the selected electronic product of the selected manufacturer and repeats step  201 . Generally, a remote controller controls an electronic product from a distance by generating a signal. For the remote control, the remote controller uses a frequency and a remote control pulse, both varying depending on the kinds and manufacturers of electronic products. Accordingly, a suitable remote controller setting means a suitable remote control mode which conforms to the properties of a selected electronic product of a selected manufacturer. 
         [0031]    At step  227 , the control section  111  determines whether the remote control mode has been terminated. If so, the control section  111  will proceed with step  229  to terminate the remote control function for operating a remote controller. If the remote control mode is maintained, the control section  111  will proceed with step  241 . At step  241 , the control section  111  determines whether the user still uses the remote control function. If so, the control section  111  will proceed with step  243  to implement a function according to the established remote controller setting. Otherwise, the control section  111  will repeat step  201 . 
         [0032]    In the process of implementing a function according to the established remote controller setting, the control section  111  receives a key signal from the key input section  103 . The preferred structure of the key input section  103  can be displayed as shown in  FIG. 6(   a ),  6 ( b ) or  6 ( c ). Referring to  FIG. 6 , the remote controller setting varies depending on the kinds of electronic products, such as a TV/CATV, a VCR and an audio/radio. For example, the user can use the navigation key for selecting a channel and adjusting a volume in a VCR as shown in  FIG. 6(   b ). Also, the number keys can be pressed to operate the VCR. For example, number keys 1, 2, 3, 4, 5 and 6 can be used to perform rewind, play, fast-forward, pause and record functions, respectively. The control section  111  generates a frequency (for example, 30 to 60 KHz) and a remote control pulse using the GPIO port and transfers them to the IR modulating/sending section  120 . The frequency and the remote control pulse may vary depending on the kinds and manufacturers of electronic products. Also, the control section  111  controls the IR modulating/sending section  120  to generate an infrared wavelength based on the frequency and the remote control pulse. The infrared wavelength is outputted to the electronic products of the selected manufacturer. For example, the infrared wavelength can be 940 nm The electronic products of the manufacturer selected at the remote controller setting operate upon receiving the infrared wavelength. 
         [0033]      FIG. 4  is a flow chart showing a process of performing a remote control function in a portable terminal according to a second embodiment of the present invention. Hereinafter, the remote control mode and function according to the second embodiment of the present invention will be explained with reference to  FIGS. 1 ,  3  and  4 . 
         [0034]    At step  401 , the control section  111  determines whether the portable terminal is in the remote control mode. If the portable terminal is in the remote control mode, the control section  111  will proceed with step  405 . Otherwise, the control section  111  will maintain the initial state of the portable terminal. The remote control mode is a mode for implementing functions required for remote control, for example, a remote controller setting suitable for a selected electronic product of a selected manufacturer, a remote control implementation and a remote control termination. 
         [0035]    At step  403 , the display section  101  is controlled to display a remote control mode. Next, step  405  is implemented. 
         [0036]    At step  405 , the control section  111  determines whether a key signal is inputted from the key input section  103 . If a key signal for remote controller setting is inputted, the control section  111  will proceed with step  407 . Otherwise, the control section  111  will proceed with step  427 . At step  407 , the control section  111  controls the display section  101  to display the kinds of electronic products controllable by a remote controller and proceeds with step  409 . The display section  103  can display the kinds of electronic products as shown in  FIG. 3(   d ). 
         [0037]    At step  409 , the control section  111  determines whether a key signal is inputted from the key input section  103 . If a key signal for product selection is inputted, the control section will proceed with step  411 . Otherwise, the control section will repeat step  407 . At step  411 , the control section  111  controls the display section  101  to display the manufacturers and proceeds with step  413 . The display section  101  can display the manufacturers as shown in  FIG. 3(   e ). 
         [0038]    At step  413 , the control section  111  determines whether a key signal is inputted from the key input section  103 . If a key signal for manufacturer selection is inputted, the control section will proceed with step  415 . Otherwise, the control section  111  will repeat step  411 . The control section  111  controls the display section  101  to display the selected product and manufacturer at step  415  and proceeds with step  417 . For example, when the user wishes to use the remote control function of the portable terminal to watch TV, he or she should select first “TV” from the displayed kinds of electronic products and then the manufacturer of the TV to be remote controlled. 
         [0039]    At step  417 , the control section  111  determines whether a key signal is inputted from the key input section  103 . If a key signal for confirmation is inputted, the control section  111  will proceed with step  419 . Otherwise, the control section  111  will proceed with step  421 . The control section  111  sets a remote control condition suitable for the selected electronic product of the selected manufacturer at step  419  and repeats step  401 . To be specific, when a particular kind of electronic product is selected among a plurality of electronic products controllable by a remote controller and then a manufacturer of the selected electronic product is selected, the control section  111  sets a remote control condition which conforms to the properties of the selected electronic product of the selected manufacturer. More specifically, a frequency, a remote control pulse and so on are set to conform to the properties of the selected electronic product of the selected manufacturer. 
         [0040]    At step  421 , the control section  111  determines whether a key signal is inputted from the key input section  103 . If a key signal for cancellation is inputted, the control section  111  will proceed with step  423 . Otherwise, the control section  111  will repeat step  415 . Also, if no key signal for cancellation or confirmation is inputted during a predetermined period of time, for example, within a minute, the control section  111  will terminate the remote control mode. At step  423 , the control section  111  controls the display section  101  to display a message informing termination of the remote control mode and proceeds with step  425 . 
         [0041]    At step  425 , the control section  111  determines whether a key signal is inputted from the key input section  103 . If a key signal for termination is inputted, the control section  111  will repeat step  401  to allow the user to select another kind or manufacturer of electronic products. If no key signal for termination is inputted, the control section  111  will repeat step  407 . 
         [0042]    At step  427 , the control section  111  determines whether the remote control mode has been terminated. If the remote control mode has been terminated, the control section  111  will proceed with step  429  to stop the remote control function for operating a remote controller. Otherwise, the control section  111  will proceed with step  441 . At step  441 , the control section  111  determines whether the user still uses the remote control function. If not, the control section  111  will repeat step  401 . If the remote control function is still used, the control section  111  will proceed with step  443  to implement a function according to the established remote controller setting, which is similar to step  243  in the process shown in  FIG. 2 . 
         [0043]      FIG. 5  is a flow chart showing the operation of a control section of a portable terminal to perform a communication function during the remote control mode according to the first embodiment of the present invention. The operation of the control section  111  will be described in detail with reference to  FIGS. 1 and 5 . 
         [0044]    At step  501 , the control section  111  determines whether the portable terminal is in a remote control mode. If the portable terminal is in the remote control mode, the control section  111  will proceed with step  503 . Otherwise, the control section  111  will proceed with step  502  to implement a required function other than the remote control function. For example, the required function may relate to a voice communication, a text message service and a short message service. At step  503 , the control section  111  implements the remote control function. The remote control mode is an operation mode of the portable terminal. The control section  111  can perform operations in the remote control mode as shown in  FIG. 2  or  FIG. 4 . 
         [0045]    At step  505 , the control section  111  determines whether communication is initiated during the remote control mode. If communication is initiated, the control section  111  will terminate the remote control function and will proceed with step  507 . Otherwise, the control section  111  will repeat step  503  to implement the remote control function. Although termination of the remote control function to initiate communication is described herein, it will be understood that the remote control function can be terminated to implement any other function. At step  507 , the control section  111  determines whether the communication relates to an outgoing call. If so, the control section  111  will proceed with step  509  to perform an outgoing call service. If not, the control section  111  will proceed with step  511 . A communication relating to an outgoing call, which means a call initiated by the user, refers to making a call or sending a text or voice message. Also, the outgoing call service refers to a service for performing communication relating to an outgoing call. At step  511 , the control section  111  determines whether the communication relates to an incoming call. If so, the control section  111  will perform an incoming call service at step  513  and will proceed with step  515 . A communication relating to an incoming call refers to answering a call or receiving a text or voice message. If the communication does not relate to an incoming call, the control section  111  will recognize the initiated communication as an error at step  521  and will proceed with step  517 . An error is unexpected communication which is neither an outgoing call nor an incoming call. 
         [0046]    At step  515 , the control section  111  determines whether the communication ends. If so, the control section  111  will proceed with step  517 . If not, the control section  111  will repeat step  505 . At step  517 , the control section  111  determines whether the remote control mode has been terminated. If so, the control section  111  will terminate the remote control function. If the remote control mode is maintained, the control section  111  will repeat step  503 . 
         [0047]    While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various modifications, additions and substitutions may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.