Abstract:
A reset control device for an electronic device having a battery for providing operating power for a system circuit is provided. The reset control device includes a signal generating unit for generating a control signal, and a control module installed in the battery and coupled to the signal generating unit for disconnecting a power supply link between the battery and the system circuit for a predetermined duration and recovering the power supply link, when the control signal conforms to a predefined rule, so as to reset the system circuit.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    The present invention relates to a reset control device, a reset control method and an electronic device, and more particularly, to a reset control device, a reset control method and an electronic device for accurately executing a reset procedure. 
         [0003]    2. Description of the Prior Art 
         [0004]    As the advancement of technology, portable electronic devices, such as laptops, mobile phones, cameras and MP3 players, are utilized more frequently in daily life. However, as a portable electronic device has more functions, system operations thereof become more complex. Therefore, the portable electronic device may easily suffer from design defects or operation errors, which may cause malfunctions in firmware, application or BIOS, and lead to abnormal power supply or system crash. In such a condition, there is a need for proper rescue measures. 
         [0005]    In general, for portability, the portable electronic device is equipped with a rechargeable battery for storing electricity required by normal operations of the portable electronic device. In other words, if the rechargeable battery is temporarily disconnected for a while and reconnected at once, the portable electronic device is turned off and rebooted after a power supply button is pressed, i.e. a restart procedure is executed. However, such an operation is inconvenient. Besides, some portable electronic device of the prior art is equipped with a built-in rechargeable battery, meaning that the rechargeable battery cannot be removed arbitrarily, and a reset button is added to trigger the restart of operating system, so as to achieve the reset procedure. That is, when the reset button is pressed, system power keeps supplied, while controllers, such as a keyboard controller, will restart system programs. 
       SUMMARY OF THE INVENTION 
       [0006]    It is therefore an objective of the present invention to provide a reset control device, a reset control method and an electronic device. 
         [0007]    One aspect of the present invention discloses a reset control device for an electronic device. The electronic device has a battery for providing operating power for a system circuit. The reset control device includes a signal generating unit, for generating a control signal; and a control module, installed in the battery and coupled to the signal generating unit, for disconnecting a power supply link between the battery and the system circuit for a predetermined duration and recovering the power supply link when the control signal conforms to a predefined rule, so as to reset the system circuit. 
         [0008]    Another aspect of the present invention further discloses a reset control method for an electronic device. The electronic device has a battery for providing operating power for a system circuit. The reset control method includes receiving a control signal, and disconnecting a power supply link between the battery and the system circuit for a predetermined duration and recovering the power supply link when the control signal conforms to a predefined rule, so as to reset the system circuit. 
         [0009]    Another aspect of the present invention further discloses an electronic device. The electronic device includes a system circuit, a battery, for providing operating power for the system circuit, and a reset control device, including a signal generating unit, for generating a control signal, and a control module, installed in the battery and coupled to the signal generating unit, for disconnecting a power supply link between the battery and the system circuit for a predetermined duration and recovering the power supply link when the control signal conforms to a predefined rule, so as to reset the system circuit. 
         [0010]    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 THE DRAWINGS 
         [0011]      FIG. 1  illustrates a schematic diagram of an electronic device according to an embodiment of the present invention. 
           [0012]      FIG. 2  illustrates a schematic diagram of realizing a control module of the electronic device shown in  FIG. 1  by a battery gas gauge chip and an analog front end chip. 
           [0013]      FIG. 3  illustrates a schematic diagram of a reset control process according to an embodiment of the present invention. 
       
    
    
     DETAILED DESCRIPTION 
       [0014]    Please refer to  FIG. 1 , which illustrates a schematic diagram of an electronic device  10  according to an embodiment of the present invention. The electronic device  10  can be a laptop, mobile phone, camera, MP 3  player or any portable electronic device, where a battery  102  supplies operation power for a system circuit  100 . In detail, the battery  102  and the system circuit  100  are connected via a connector  104 . When the connector  104  and the system circuit  100  are connected correctly, a storage unit  106  discharges electricity to the system circuit  100  to provide the operation power. Besides, a switch  108  is set between the storage unit  106  and the connector  104 , and controlled by a control module  110  for switching a power supply link between the storage unit  106  and the connector  104 . An operating principle of the control module  110  controlling the switch  108  is based on whether a control signal CTRL generated by a signal generating unit  112  conforms to a predefined rule. When the control signal CTRL generated by the signal generating unit  112  conforms to the predefined rule, the control module  110  turns off the switch  108  for a predetermined duration and recovers the power supply link, so as to reset the system circuit  100 . In other words, the combination of the control module  110  and the signal generating unit  112  realizes a reset control device. 
         [0015]    In short, when a user intends to reset the system circuit  100 , the user can utilize the signal generating unit  112  to generate the control signal CTRL conforming to the predefined rule, and accordingly, the control module  110  turns off the switch  108  for the predetermined duration and turns on the switch  108  at once. Since the switch  108  is installed in the power supply link between the storage unit  106  and the system circuit  100 , when the switch  108  is turned off and turned on, the system circuit  100  is correspondingly turned off and turned on, i.e. a reset procedure is finished. In other words, the present invention switches power supply, to directly control power of the system circuit  100 , to achieve the purpose of reset. 
         [0016]    Noticeably,  FIG. 1  is to illustrate the conception of the present invention, and all numerous modifications and alterations based on the present invention are the scope of the present invention, and are not limited hereinafter. For example, the method of the signal generating unit  112  generating the control signal CTRL is not limited, and the predefined rule mentioned in the above can be properly adjusted according to realization of the signal generating unit  112 . For example, if the signal generating unit  112  is realized by a button, the predefined rule can be a period of the button being continuously enabled exceeds a predefined value, such as 4 seconds. In such a condition, the signal generating unit  112  can be realized by an original button of the system circuit  100 , such as a power supply button. That is, when a period of the power supply button being pressed exceeds 4 seconds, the control module  110  determines the control signal CTRL generated by the signal generating unit  112  conforms to the predefined rule, so as to turn off the switch  108  and turn on the switch  108  again. 
         [0017]    In addition, the signal generating unit  112  can be realized by a plurality of buttons, and the predefined rule can be the plurality of buttons are simultaneously enabled. For example, suppose the electronic device  10  is a laptop, the signal generating unit  112  is composed of buttons F1, F2 and F3 of the laptop, and the predefined rule is the buttons F1, F2 and F3 are simultaneously pressed. In such a condition, when the user wants to reset the laptop, the user can achieve the reset procedure by simultaneously pressing the buttons F1, F2 and F3, such that the power supply link is disconnected and recovered. Besides, as shown in  FIG. 1 , the battery  102  can be any type of battery, e.g. alkaline battery or rechargeable battery. 
         [0018]    On the other hand, the control module  110  is installed in the battery  102 , and may comprise more than one control unit. For example, as shown in  FIG. 2 , the control module  110  comprises a battery gas gauge chip  200  and an analog front end (AFE) chip  202 . The battery gas gauge chip  200  can monitor a capacity of the storage unit  106  as well as determine whether the control signal CTRL conforms to the predefined rule. When a determined result generated by the battery gas gauge chip  200  indicates the control signal CTRL conforms to the predefined rule, the AFE chip  202  turns off the switch  108  for the predetermined duration and turns on the switch  108 , to finish the reset procedure. 
         [0019]    Operations of the control module  110  and the signal generating unit  112  can further be summarized into a reset control process  30  as shown in  FIG. 3 . The reset control process  30  comprises the following steps: 
         [0020]    Step  300 : Start. 
         [0021]    Step  302 : The signal generating unit  112  generates the control signal CTRL to the control module  110 . 
         [0022]    Step  304 : The control module  110  disconnects the power supply link between the battery  102  and the system circuit  110  for the predetermined duration and recovers the power supply link, when the control signal CTRL conforms to the predefined rule, so as to reset the system circuit  100 . 
         [0023]    Step  306 : End. 
         [0024]    Detail illustration and alteration of the reset control process  30  are referred in the above, and are not narrated hereinafter. 
         [0025]    In the prior art, although the reset button can reset the portable electronic device, there is a need to add the corresponding button onto the housing, which limits flexibility of the external design. In comparison, the present invention can determine whether to disconnect the power supply link and to recover the power supply link, i.e. reset the portable electronic device, according to the predefined rule, such as whether a button is continuously enabled or whether a plurality of buttons are simultaneously enabled. Therefore, the reset button is not needed, so as to increase flexibility of the external design. 
         [0026]    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.