Abstract:
A sub-circuit configuration allowing an external device access to a storage device provided at the host through configuration of a sub-circuit is separated using a power controller from a main circuit configuration in portable electronic device; the power controller being related to a power supply loop to switch among circuit configurations of a main system and its subsystems, and the connection among components of the main and the sub-circuit configurations.

Description:
BACKGROUND OF THE INVENTION  
       [0001]     (a) Field of the Invention  
         [0002]     The present invention is related to a circuit control technology for portable electronic devices including notebook, and more particularly, to one that allows an external device access to a storage device in the host through a sub-circuit configuration when the portable electronic device is in power off status.  
         [0003]     (b) Description of the Prior Art  
         [0004]     Portable electronic devices including the notebook today are gradually capable of providing all those function a desktop computer can do thanks to the rapidly upgraded chip manufacturing technology and operation efficacy. Compared to the desktop computer, the notebook gives features of being compact and provided with built-in DC source particularly ideal for persons always on the road. Furthermore, in terms of the state of art, the efficacy and operation speed of the microprocessor adapted to the notebook are comparable to that of the desktop. However, as restricted by its structural type, power consumption and overheating during the normal power on operation affect the usable time and operation efficacy of the notebook.  
         [0005]     Furthermore, though provided with the feature of portability, the storage device (e.g., a hard disk) can only be activated through the microprocessor and the operation of related circuit with the main system in normal power on status. Therefore, data created in the storage device is accessible only when the device is in its normal power on status. For example, if the user desires to access to the data of music format (e.g. MP3 data) through the portable electronic device (e.g., a notebook), the MP3 data can only be read to play the music with the notebook in power on status. By doing so, it creates the problems of excessive power consumption and overheating to cause inconvenience in the use of the notebook. Besides, the monitor of the notebook must be maintained lifted up during the power on status, and that creates placement and accommodation problems to the user if he just needs to listen to the music or to execute some simple task of data access.  
       SUMMARY OF THE INVENTION  
       [0006]     The main purpose of the present invention is to provide a sub-circuit configuration adapted to a portable electronic device. A sub-circuit configuration is segregated using a power controller from the configuration of the main circuit for the normal power on operation by a portable electronic device, e.g., a notebook. Wherein, the configuration of the main circuit is integrated at least with a microprocessor and a storage device; and the power controller switches the power supply loop of the configuration of the main circuit and/or the sub-circuit configuration, and controls the connection of those components between the sub-circuit configuration and the configuration of the main circuit.  
         [0007]     Accordingly, the power controller may switch the general portable electronic device to operate in the power on mode of the configuration of the main circuit, or in the power off status of the portable electronic device, to have the sub-circuit configuration to read data created in the storage device or to store data into the storage device for reducing the power consumption and overheating of the host. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0008]      FIG. 1  is a block chart showing that a sub-circuit configuration of the present invention is applied in a portable electronic device.  
         [0009]      FIG. 2  is a block chart showing that the sub-circuit configuration of the present invention is adapted to a portable electronic device with its main system in power on status.  
         [0010]      FIG. 3  is a block chart showing that the sub-circuit configuration of the present invention is adapted to a portable electronic device with its main system in power off status.  
         [0011]      FIG. 4  is a flow chart showing the execution of data broadcasting by the present invention with its main system in power on status.  
         [0012]      FIG. 5  is a flow chart showing the execution of data broadcasting by the present invention with its main system in power off status. 
     
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0013]     Referring to  FIG. 1  for a block chart showing a sub-circuit configuration adapted to a portable electronic device. Wherein, by switching a power controller  31 , the sub-circuit configuration  20  is segregated from the main power supply loop and a storage device  12 . The power controller  31  is switches the power supply loop of the main circuit configuration  10  and the sub-circuit configuration  20 , and controls the connection of those components between the sub-circuit configuration  20  and the main circuit configuration  10 . Therefore, with the sub-circuit configuration  20 , the user is able to access to the data created in the storage device  12 , and link to other devices to provide data storage space for other devices, or transmit data in the storage device  12  to other corresponding peripherals for output purpose.  
         [0014]     As illustrated in  FIGS. 2 and 3  showing block charts of the sub-circuit configuration adapted to a portable electronic device respectively with the main system in power on and power off status. Wherein, the sub-circuit configuration  20  relates to an MP3 device that reads and/or plays data in music format from the storage device  12  through the sub-circuit configuration  20  with the portable electronic device in power off status. The main circuit configuration  10  includes a microprocessor  11 , a storage device  12 , a de/encoder  13 , an amplifier  14  and a sound output port  15 ; and the sub-circuit configuration  20  includes a decoder  21  and a memory  22 . The power controller  31  switches the power supply loop between a power modulus  30  and the main circuit configuration  10  and the sub-circuit configuration  20 , and controls the connection of those components between the sub-circuit configuration  20  and the main circuit configuration  10 .  
         [0015]     The storage device  12  in the main circuit configuration  10  may be provided in the form of an IDE interface hard disk or a CD drive while the sub-circuit configuration  20  may be further integrated with a wireless transmission modulus  23 .  
         [0016]     As illustrated in  FIG. 4  for a flow chart showing the execution of data broadcasting by the present invention with its main system in power on status, and also referring to  FIG. 2 , the electrical interface (IDE Interface) of the storage device  12  of the main circuit configuration  10  is switched to the main circuit configuration  10 (ON) when the user switches the power supply modulus  30  to the power supply loop (ON) of the main circuit configuration  10  with the power controller  31 . A main circuit loop is created including the power supply modulus  30 , the storage device  12  and the main circuit configuration  10 . Once an operation key (e.g., [Play]) of the MP3 device is activated, the microprocessor  11  reads compressed file of MP3 format in the storage device  12  through data bus interface between the south bridge chip  112  and storage device  12 , and transmits through a north bridge chip  111  the compressed file to the microprocessor  11  where the file will be decompressed. The decompressed sound effect is transmitted through the original route back to the south bridge chip  112  where the sound effect will be outputted to a corresponding device. If the user choose to wear a wireless earphone to listen to the music data, the decompressed music data are transmitted through a data transmission port  16  (e.g., a USB interface) and the connected wireless transmission modulus  23  (e.g., Bluetooth wireless transmission modulus) to facilitate the receiving/playing by a Bluetooth wireless earphone the user wears. Relatively, with the south bridge chip  112 , the decompressed sound effect is processed by the de/encoder  13  and the amplifier  14 , then transmitted to the sound output port  15 , and finally outputted to the corresponding peripheral device (e.g., a loudspeaker) to play the musical data.  
         [0017]      FIGS. 3 and 5  respectively show the block chart and the flow chart of the present invention with the main system of the portable electronic device in power off status. As illustrated, when the user switches through the power controller  31  and switches the power supply modulus  30  to the power supply loop (OFF) of the sub-circuit configuration  20 , the electrical interface (IDE Interface) of the storage device  12  of the main circuit configuration  10  is switched to the power supply loop (OFF) of the sub-circuit configuration  20 . Accordingly, the power supply modulus  30 , the storage device  12  and the sub-circuit configuration  20  constitute a sub-circuit loop. When an operation key (not illustrated) on the MP3 player is activated by the user, the decoder  21  in the sub-circuit configuration  20  immediately reads the compressed file in MP3 format from the storage device  12  via the data bus interface, then transmits the file back to the decoder  21  to decompress the file. If the user chooses to wear a wireless earphone to listen to the music, the decompressed sound effect by the decoder  21  is transmitted by means of a Universal Asynchronous Receiver/Transmitter (UART) to the wireless transmission modulus  23  to facilitate the receiving and playing by the corresponding wireless modulus in the earphone. If the wireless earphone is not used to play the sound effect, the sound effect decompressed by the decoder  21  is forthwith outputted through the sound output port  15  to the output/play end of the peripheral device.  
         [0018]     In another preferred embodiment of the present invention, the power controller  31  may be comprised of one or multiple electronic switches for the user to select the power supply loop as desired.  
         [0019]     Accordingly, the present invention allows the user to access to the data in the storage device in a portable electronic device with the electronic device either in power on or power off status, thus to significantly promote the availabilities of the portable electronic device.  
         [0020]     With the portable electronic device in power off status, the data access is executed with the sub-circuit at lower power consumption and low heat to transmit the data in wireless transmission mode to be used by other peripheral device, or to receive the input of data from other devices. The present invention extends the service hours of the battery while the portable electronic device may be operated at where provided with poor working conditions such as in a knapsack or a luggage trunk of an automobile without affecting the general performance and efficacy of the portable electronic device.  
         [0021]     The present invention provides an improved construction of a sub-circuit configuration for portable electronic devices including a notebook; therefore, this application for a utility patent is filed accordingly. However, it is to be noted that those preferred embodiments disclosed in the specification and the accompanying drawings are in no way limiting the present invention. Therefore, any construction, installation, or characteristics that is same or similar to that of the present invention should fall within the scope of the purposes and claims of the present invention.