Abstract:
Disclosed is a method for automatically reporting a speakerphone call mode of a portable wireless terminal having a speakerphone module to a calling partner. The method includes entering a call mode when a call is initiated; determining whether the speakerphone call mode is turned on after the initiation of the call mode; reading a predetermined report message for reporting an on state of the speakerphone call mode from a memory of the portable wireless terminal when the speakerphone call mode is turned on; and transmitting the predetermined report message to the calling partner&#39;s terminal. Accordingly, the method makes it possible to efficiently prevent an invasion of privacy of the calling partner without causing inconvenience to the user of the portable wireless terminal.

Description:
PRIORITY  
       [0001]     This application claims priority under 35 U.S.C. § 119 to an application entitled “Apparatus And Method For Reporting Speaker-Phone Mode To The Calling Partner In Portable Wireless Terminal” filed in the Korean Intellectual Property Office on Jan. 24, 2005 and assigned Serial No. 2005-6322, the contents of which are incorporated herein by reference.  
       BACKGROUND OF THE INVENTION  
       [0002]     1. Field of the Invention  
         [0003]     The present invention relates to an apparatus and method for automatically reporting a speakerphone call mode of a portable wireless terminal to a calling partner, and more particularly, to an apparatus and method for automatically transmitting a voice message for reporting an on state of a speakerphone call mode of a portable wireless terminal to a calling partner&#39;s terminal when a call mode of the portable wireless terminal is converted from a general call mode to a speakerphone call mode.  
         [0004]     2. Description of the Related Art  
         [0005]     With the development of electronic and communication industries, the use of portable wireless terminals is becoming popular and the portable wireless terminals are being developed to be compact, lightweight and have multi-functional features to satisfy the user&#39;s demands.  
         [0006]     In view of software, portable wireless terminals can provide a music download service and a video-on-demand (VOD) service, as well as a call service. Also, the portable wireless terminals can take a photograph and store it in a photo album therein. In view of hardware, peripheral devices attachable to the portable wireless terminals are also being developed. For example, an attachable built-in digital camera module, a TV tuner module for terrestrial broadcasting, an MP3 player module, and a high-performance speaker module are now available as peripheral devices. That is, the portable wireless terminals conveniently have a multimedia function in addition to a call function.  
         [0007]     However, the multimedia function can cause problems such as invasion of privacy and release of personal information. Specifically, a camera phone may cause such problems most seriously. Various regulations have been proposed to prevent unauthorized photographing activities using the camera phone. For example, the camera phone are now equipped with devices for generating a flash and a beep sound when its shutter is pressed down to alert bystanders of use of the camera phone, and camera phones are now prohibited from being carried in specific places.  
         [0008]     A speakerphone function also causes a problem in that one party cannot know whether or not an opposing party&#39;s terminal is in a speakerphone call mode during their call. That is, the privacy of the one party may be invaded without his knowledge by the other party.  
         [0009]     Unlike the camera phone, there is no method for preventing the privacy invasion due to the unauthorized use of the speaker phone function.  
       SUMMARY OF THE INVENTION  
       [0010]     The present invention provides an apparatus and method for automatically reporting a speakerphone call mode of a portable wireless terminal to a calling partner.  
         [0011]     The present invention also provides an apparatus and method for automatically transmitting a predetermined voice message from a portable wireless terminal to a calling partner&#39;s terminal over a currently-established traffic channel when the portable wireless terminal enters a speakerphone call mode.  
         [0012]     Further, the present invention provides an apparatus and method for automatically reporting an on state of a speakerphone call mode of a portable wireless terminal to a calling partner when a call mode of the portable wireless terminal is converted from a general call mode to the speakerphone call mode.  
         [0013]     According to an aspect of the present invention, a method for automatically reporting a speakerphone call mode of a portable wireless terminal to a calling partner is provided, the method including reading a first predetermined report message for reporting an on state of the speakerphone call mode from a memory of the portable wireless terminal when the speakerphone call mode is turned on; and transmitting the first predetermined report message to the calling partner&#39;s terminal.  
         [0014]     The method may further include reading a second predetermined report message for reporting an off state of the speakerphone call mode from the memory when the speakerphone call mode is turned off; and transmitting the second predetermined report message to the calling partner&#39;s terminal over a currently-established traffic channel.  
         [0015]     According to another aspect of the present invention, an apparatus for automatically reporting a speakerphone call mode of a portable wireless terminal to a calling partner is provided, the apparatus including a speakerphone module including a high-performance speaker and a high-performance microphone for a speakerphone call; a memory for storing a report message for reporting an on state of the speakerphone call mode; a controller for reading the report message from the memory when the speakerphone call mode is turned on and providing the read report message; and a transmitter for receiving the report message from the controller and transmitting the report message to the calling partner&#39;s terminal over a currently-established traffic channel. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0016]     The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principle of the invention. In the drawings:  
         [0017]      FIG. 1  is a block diagram of a portable wireless terminal with a speakerphone function according to an embodiment of the present invention; and  
         [0018]      FIG. 2  is a flowchart illustrating a procedure for automatically reporting a speakerphone call mode of the portable wireless terminal shown in  FIG. 1  to a calling partner. 
     
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0019]     Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. A detail description of well-known features will be omitted for conciseness.  
         [0020]     The present invention proposes a method for automatically reporting a speakerphone call mode of a portable wireless terminal to a calling partner. In the method, a predetermined voice message is automatically transmitted to a calling partner&#39;s terminal over a currently-established traffic channel when the call mode of the portable wireless terminal is converted from a general call mode to a speakerphone call mode. Here, the voice message may be an audio file data such as advanced audio CODEC (AAC) data, pulse code modulation (PCM) data, and adaptive multi ratio (AMR) data. The calling partner&#39;s terminal receives and decodes the voice message through a CODEC and reproduces the resulting signal through a speaker, in the same manner as for a voice call signal.  
         [0021]      FIG. 1  is a block diagram of a portable wireless terminal with a speakerphone function according to an embodiment of the present invention. It should be noted that the portable wireless terminal includes various kinds of mobile terminals, such as a cellular phone, a Personal Communication System (PCS) phone, a Personal Data Assistant (PDA) terminal, an International Mobile Telecommunication-2000 (IMT-200) terminal, and an Orthogonal Frequency Division Multiplexing (OFDM) terminal. A following description will be made with respect to a general structure of the terminals.  
         [0022]     Referring to  FIG. 1 , a controller  100  controls an overall operation of the portable wireless terminal. For example, the controller  100  processes and controls voice communication and data communication. In addition to the typical functions, the controller  100  reads a voice message prestored in a memory  102  during a speakerphone mode and transmits the read voice message to a calling partner&#39;s terminal over a currently-established traffic channel. A description of the typical process and control operation of the controller  100  will be omitted for conciseness.  
         [0023]     The memory  102  includes a program memory, a data memory, and a nonvolatile memory. The program memory stores a program for controlling an overall operation of the terminal. The program memory may be a flash memory. The data memory temporarily stores data that is generated during the operation of the portable wireless terminal. The data memory may be a random access memory (RAM). The nonvolatile memory stores system parameters and other data such as phone numbers and SMS messages. The nonvolatile memory may be an electrically erasable programmable read-only memory (EEPROM). In this embodiment, the memory  102  stores a message for reporting the on state of a speakerphone call mode and a message for reporting the off state of a speakerphone mode. These report messages may be audio file data such as AAC data, PCM data, and AMR data.  
         [0024]     A keypad  104  includes numeric keys of digits 0-9 and a plurality of function keys, such as a menu key, a cancel (delete) key, a confirmation key, a talk key, an end key, an Internet connection key, and navigation keys (Left/Right/Up/Down). The keypad  104  provides key input data corresponding to keys pressed by a user to the controller  100 . A display  106  displays status information (or indicators) of the portable wireless terminal, numerals and characters, moving pictures and still pictures, and the like. A color LCD (liquid crystal display) may be used for the display  106 .  
         [0025]     A radio frequency (RF) module  108  down-converts an RF signal received through an antenna ANT and provides the down-converted signal to a modem  110 . Also, the RF module  108  up-converts a baseband signal provided from the modem  110  and transmits the up-converted signal through the antenna ANT. The modem  110  processes the baseband signals that are exchanged between the RF module  108  and the controller  100 . For example, in the case of data transmission, the modem  110  performs channel coding and spreading on the transmission data. In the case of data reception, the modem  110  performs despreading and channel decoding on the reception data.  
         [0026]     A coder-decoder (CODEC)  112  converts digital audio data (such as PCM data, AMR data, and AAC data) received from the controller  100  into analog audio signals and outputs the analog audio signals to a switching unit  114 . Also, the CODEC  112  codes analog audio signals received from the switching unit  114  into digital audio data and provides the digital audio data to the controller  100 .  
         [0027]     Under the control of the controller  100 , the switching unit  114  creates a voice channel between the CODEC  112  and an audio I/O unit  116  during a general call mode, and a voice channel between the CODEC  112  and a speakerphone module  118  during a speakerphone call mode. The audio I/O unit  116  includes a speaker and a microphone for input/output of a voice during the general call mode. The speakerphone module  118  includes a high-performance speaker and a high-performance microphone for input/output of a voice signal during the speakerphone call mode. Here, the speakerphone module  118  may be built in to the portable wireless terminal or may be detachably attached to the terminal.  
         [0028]      FIG. 2  is a flowchart illustrating a procedure for automatically reporting a speakerphone call mode of the portable wireless terminal shown in  FIG. 1  to a calling partner. Referring to  FIG. 2 , in Step  201 , the controller  100  determines whether a call is initiated. If so, the process proceeds to Step  203 , and if not, the process proceeds to Step  225 . In Step  225 , the controller  100  performs other modes (for example, a standby mode). In Step  203 , the controller  100  enters a call mode.  
         [0029]     In Step  205 , the controller  100  determines whether the speakerphone call mode is turned on. If so, the process proceeds to Step  207 , and if not, the process proceeds to Step  221 . Here, the speakerphone call mode may be turned on by default at the initiation of a call mode, by a mode switch button of the terminal during a general call, or by events of the terminal (such as action of a folder of the terminal and installation of an external speakerphone module at the terminal).  
         [0030]     In Step  221 , the controller  100  determines whether the call is terminated by disconnection of a call channel. If so, the process proceeds to Step  219 , and if not, the process returns to Step  205 .  
         [0031]     In Step  207 , the controller reads a voice message for reporting the on state of the speakerphone call mode (for example, “A SPEAKERPHONE MODE IS TURNED ON”) from the memory  102 . In Step  209 , the controller transmits the read voice message to a calling partner&#39;s terminal over a currently-established traffic channel (TX PATH). Here, the voice message may be audio file data such as AAC data, PCM data, and AMR data, and the calling partner&#39;s terminal receives and decodes the voice message through a CODEC and reproduces the resulting signal through a speaker.  
         [0032]     In Step  211 , the controller  100  determines whether the speakerphone call mode is turned off. If so, the process proceeds to Step  213 , and if not, the process proceeds to Step  223 . Here, the speaker phone mode may be turned off by the mode switch button during the speakerphone call mode, or by events of the terminal (such as the action of the folder and the disconnection of the external speakerphone module at the terminal). In Step  223 , the controller  100  determines whether the call is terminated by disconnection of the call channel. If so, the process proceeds to Step  219 , and if not, the process returns to Step  211 .  
         [0033]     In Step  213 , the controller  100  reads a voice message for reporting the off state of the speakerphone call mode (for example, “A SPEAKERPHONE MODE IS TURNED OFF”) from the memory  102 . In Step  215 , the controller  100  transmits the read voice message to the calling partner&#39;s terminal over the currently-established traffic channel. As described above, the voice message may be audio file data such as AAC data, PCM data, and AMR data, and the portable wireless terminal of the calling partner receives and decodes the voice message through a CODEC and reproduces the resulting signal through a speaker.  
         [0034]     In Step  217 , the controller determines whether the call is terminated by disconnection of the call channel. If so, the process proceeds to Step  219 , and if not, the process returns to Step  205 . In Step  219 , the controller  100  turns off the call mode and then ends the procedure.  
         [0035]     In another embodiment of the present invention, the on/off state of the speakerphone call mode may be reported to the calling partner through a short message instead of the voice message. In a further another embodiment of the present invention, a code for controlling the calling partner&#39;s terminal may be contained in the short message and thus transmitted to the calling partner&#39;s terminal, and the calling partner&#39;s terminal may perform a predetermined operation (for example, generation of a beep sound) corresponding to the code.  
         [0036]     As described above, the apparatus and method according to the present invention can efficiently prevent an invasion of privacy of the calling partner without causing inconvenience to the user of the portable wireless terminal, by automatically transmitting a predetermined report message from the portable wireless terminal to the calling partner&#39;s terminal when the call mode of the portable wireless terminal is converted from a general call mode to a speakerphone call mode.  
         [0037]     The foregoing embodiments are merely exemplary and are not to be construed as limiting the present invention. The present teachings can be readily applied to other types of apparatuses. The description of the present invention is intended to be illustrative, and not to limit the scope of the claims. Many alternatives, modifications, and variations will be apparent to those skilled in the art.