Abstract:
A method of accepting a phone call comprises applying a force to the phone when receiving an incoming phone call on the phone to effect motion properties on the phone, detecting the motion properties of the phone, and deciding whether to accept the incoming phone call according to the motion properties.

Description:
BACKGROUND OF INVENTION 
   1. Field of the Invention 
   The present invention relates to a method of accelerating a phone for triggering the phone to answer an incoming phone call. 
   2. Description of the Prior Art 
   Mobile phones and cordless phones can each be carried around freely for making and receiving phone calls. Typically, when a phone call is received, a user presses a button on the phone, such as a “Talk” button, to answer the incoming phone call. Unfortunately, the buttons on the phone are not always easy to find, and delay in pressing the correct button can lead to users missing calls by not answering the calls in time. 
   SUMMARY OF INVENTION 
   It is therefore an objective of the claimed invention to provide a method and related device for answering an incoming phone call by applying an acceleration to the phone in order to solve the above-mentioned problems. 
   According to the claimed invention, a method of accepting a phone call comprises applying a force to the phone when receiving an incoming phone call on the phone to effect motion properties on the phone, detecting the motion properties of the phone, and deciding whether to accept the incoming phone call according to the motion properties. 
   The invention also relates to a method of accepting a phone call. The method comprises rotating the phone when receiving an incoming phone call, detecting the magnitude of a rotational velocity at which the phone is rotated, and deciding whether to accept the incoming phone call according to the rotational velocity. 
   The invention also relates to a phone answering system. The system comprises a gyroscope for detecting a rotational velocity at which a phone is rotated when the phone is receiving an incoming phone call, the rotational velocity having a magnitude. The system also comprises a switch coupling to the gyroscope to receive the magnitude of the rotational velocity, the switch controlling the phone to answer the incoming phone call according to the magnitude of the rotational velocity. 
   It is an advantage of the claimed invention that the user of the phone does not have to find and press a button on the phone in order to answer an incoming phone call. The user simply has to apply a force to the phone in order to trigger the phone to answer the incoming phone call. This way of answering incoming phone calls is both more convenient for the user and saves time, which may reduce the number of missed calls. 
   These and other objectives of the present invention will no doubt become obvious to those of ordinary skill in the art after reading the following detailed description of the preferred embodiment that is illustrated in the various figures and drawings. 

   
     BRIEF DESCRIPTION OF DRAWINGS 
       FIG. 1  is a functional block diagram of a phone answering system according to a first embodiment of the present invention. 
       FIG. 2  illustrates directions in which a phone can be rotated for answering an incoming phone call. 
       FIG. 3  is a graph illustrating a voltage output by the micro-gyroscope versus an angular velocity measured by the micro-gyroscope. 
       FIG. 4  is a flowchart illustrating the method for answering an incoming phone call according to the first embodiment of the present invention. 
       FIG. 5  is a block diagram of a phone answering system according to a second embodiment of the present invention. 
       FIG. 6  shows a graph illustrating operation of the fixed voltage circuit of the second embodiment of the present invention. 
       FIG. 7  is a block diagram of a phone answering system according to a third embodiment of the present invention. 
   

   DETAILED DESCRIPTION 
   Please refer to  FIG. 1 .  FIG. 1  is a functional block diagram of a phone answering system  10  according to a first embodiment of the present invention. 
   The phone answering system  10  comprises a micro-gyroscope  12 , a switch  20 , and a keypad  22 . The keypad  22  can be used to control the normal operation of a phone utilizing the phone answering system  10 . For instance, the keypad  22  can be used to make phone calls, to send text messages, to answer incoming phone calls, and to terminate phone calls. 
   The micro-gyroscope  12  is used to detect a rate at which the phone is rotated, and for generating an output voltage based on the magnitude of the rotational velocity of the phone. When a phone call is received on the phone, the phone can simply be rotated for answering the phone call instead of having to press a key on the keypad  22 . If the rotational velocity measured by the micro-gyroscope  12  is greater than a predetermined rotational velocity value, then the switch  20  is activated to answer the incoming phone call. On the other hand, the user also has the option of answering the incoming phone call the traditional way. That is, pressing the designated key on the keypad  22  also activates the switch  20  to answer incoming phone calls. 
   Similarly, phone calls can also be terminated by either rotating the phone or by pressing the correct key on the keypad  22 . The relevant settings for controlling operation of the micro-gyroscope  12  and the keypad  22  can be customized by the user of the phone or by the manufacturer. 
   The present invention is ideally applied to cordless phones and mobile phones since these phones are not required to be placed in a cradle. However, the present invention may also be applied to a variety of other electronic devices. The basic concept of the present invention is that the electronic device is rotated or accelerated for answering a phone call, terminating a phone call, or for performing any other chosen action. 
   In the first embodiment of the present invention, the phone is rotated to trigger the phone to answer an incoming phone call. Please refer to  FIG. 2 .  FIG. 2  illustrates directions A, B, and C in which a phone  15  can be rotated for answering an incoming phone call. The micro-gyroscope  12  is preferably able to detect angular velocity in any direction in three-dimensional space. Therefore, all a user has to do to answer an incoming phone call is to rotate the phone  15  in any direction such that the rotational velocity is greater than the predetermined rotational velocity value. As shown in  FIG. 2 , the phone  15  can be rotated in any of the directions A, B, and C as well as any other direction in the X-Y-Z three-dimensional space. 
   Please refer to  FIG. 3 .  FIG. 3  is a graph illustrating a voltage output by the micro-gyroscope  12  versus an angular velocity measured by the micro-gyroscope  12 . The graph in  FIG. 3  shows that as the angular velocity increases, the voltage output by the micro-gyroscope  12  also increases. The curve shown in  FIG. 3  is merely provided as an example, and is not meant for restricting the types of micro-gyroscopes that can be used. It should be noted that besides micro-gyroscopes, other types of gyroscopes and other motion sensing devices such as accelerometers could also be used. 
   Please refer to  FIG. 4 .  FIG. 4  is a flowchart illustrating the method for answering an incoming phone call according to the first embodiment of the present invention. Steps contained in the flowchart will be explained below. 
   Step  100 : Start; 
   Step  102 : An incoming phone call is received by a phone utilizing the phone answering system  10 ; 
   Step  104 : The phone is rotated with a rotational velocity greater than the minimum predetermined rotational velocity value for answering the incoming phone call; 
   Step  106 : The phone call continues; 
   Step  108 : The user either rotates the phone again or presses a key on the keypad  22  to trigger the phone to terminate the phone call; and 
   Step  110 : End. 
   The first embodiment of the present invention provides a simple way to answer and terminate phone calls through the use of the micro-gyroscope  12 . If the voltage value output by the micro-gyroscope  12  is not large enough to trigger the switch  20 , then additional circuitry will be needed to amplify the signal output by the micro-gyroscope  12 . Please refer to  FIG. 5 .  FIG. 5  is a block diagram of a phone answering system  30  according to a second embodiment of the present invention. Like the phone answering system  10  shown in  FIG. 1 , the phone answering system  30  comprises the micro-gyroscope  12  for detecting rotational velocities, the keypad  22 , and the switch  20  used for answering and terminating incoming phone calls. The phone answering system  30  also comprises a fixed voltage circuit  14  for comparing the voltage outputted by the micro-gyroscope  12  to a threshold voltage value V Th , and for outputting a first or second voltage value depending on the voltage output by the micro-gyroscope  12 . An amplifier  16  is used for amplifying the first or second voltage value outputted by the fixed voltage circuit  14  before sending the amplified voltage value to the switch  20 . 
   Please refer to  FIG. 6 .  FIG. 6  shows a graph illustrating operation of the fixed voltage circuit  14  of the second embodiment of the present invention. If the input voltage that the fixed voltage circuit  14  receives from the micro-gyroscope  12  is less than or equal to the threshold voltage value V Th , the fixed voltage circuit  14  outputs a first voltage value V 1 . On the other hand, if the input voltage that the fixed voltage circuit  14  receives from the micro-gyroscope  12  is greater than the threshold voltage value V Th , the fixed voltage circuit  14  outputs a second voltage value V 2 . The voltage output by the fixed voltage circuit  14  is then sent to the amplifier  16  for amplifying the output voltage of the fixed voltage circuit  14 . The amplified voltage value is able to trigger the switch  20  if the rotational value of the phone measured by the micro-gyroscope  12  is greater than the predetermined rotational velocity value. Please note that if the voltage output of the micro-gyroscope  12  is great enough to trigger the switch  20 , then the fixed voltage circuit  14  and the amplifier  16  are not necessary, and the first embodiment phone answering system  10  can be used instead of the second embodiment phone answering system  30 . 
   Please refer to  FIG. 7 .  FIG. 7  is a block diagram of a phone answering system  50  according to a third embodiment of the present invention. Instead of utilizing a micro-gyroscope to detect rotational velocity of the phone, the phone answering system  50  contains an accelerometer  52  for measuring acceleration of the phone. If the phone is accelerated in any direction, the accelerometer  52  will output a voltage large enough to trigger the switch  20  to accept and terminate phone calls. Like the previous embodiments, the keypad  22  can also be used for triggering the switch  20 . When a phone utilizing the phone answering system  50  receives a phone call, all the user has to do is apply a force to the phone in order to give the phone an acceleration value greater than a predetermined acceleration value in order to accept the incoming phone call. 
   To prevent users from accidentally accepting or terminating phone calls, it will be appreciated that the predetermined rotational velocity value and the predetermined acceleration value can be made sufficiently high to minimize or eliminate these accidental occurrences. 
   In summary, with the present invention method, the phone user no longer has to find and press a button on the phone in order to answer an incoming phone call. The user simply has to apply a force or a rotational velocity to the phone in order to trigger the phone to answer the incoming phone call. In this way, answering incoming phone calls is both more convenient for the user and saves time, which may reduce the number of missed calls. 
   Those skilled in the art will readily observe that numerous modifications and alterations of the device and method may be made while retaining the teachings of the invention. Accordingly, the above disclosure should be construed as limited only by the metes and bounds of the appended claims.