KR100682752B1 - Mp3 play apparatus and method of driving the same - Google Patents

Abstract

The present invention relates to an MP3 play device that improves the duration of a battery. The MP3 player includes a panel, a battery capacity detector and a driver. The panel includes a plurality of pixels formed in an area where data lines and scan lines cross each other. The battery capacity detector is connected to a battery to detect the capacity of the battery, and transmits battery capacity information having information about the detected capacity of the battery. The driving driver analyzes the battery capacity information transmitted from the battery capacity detecting unit to determine the capacity of the battery, adjusts a bias driving voltage and a bias current according to the capacity of the battery, and corresponds to the adjusted bias current. A data current is provided to the pixels through the data lines to emit the pixels. Here, the luminance of the pixels is lowered step by step as the battery capacity decreases. Since the MP3 play apparatus reduces the bias driving voltage and the bias current according to the decrease of the capacity of the battery, power consumption may be reduced to improve the battery duration.

MP3, battery, brightness, bias current, bias voltage

Description

MP3 PLAY APPARATUS AND METHOD OF DRIVING THE SAME}

1 is a block diagram showing an MP3 play apparatus according to an embodiment of the present invention.

FIG. 2 is a view illustrating a drive driver and a panel of FIG. 1.

3 is a block diagram illustrating a data driver of FIG. 2.

4 is a circuit diagram illustrating the bias driving voltage controller of FIG. 3.

The present invention relates to an MP3 play device and a method for driving the same, and more particularly, to an MP3 play device for improving the duration of the battery and a method for driving the same.

The MP3 play device uses an alkaline battery as a device for executing an MP3 file, for example, an MP3 player or an MP3 phone.

In general, an MP3 player emits a panel (eg, an organic electroluminescent device panel) with a constant brightness until the battery is exhausted.

That is, the MP3 player emits the panel with the same brightness even when the battery is low, so that the battery is quickly consumed.

As a result, the user is inconvenient to frequently charge the battery of the MP3 play device.

Therefore, there is a need for an MP3 play apparatus and a method of driving the same, which can prolong the duration of the battery by appropriately adjusting the luminance according to the decrease of the capacity of the battery.

It is an object of the present invention to provide an MP3 play device and a method of driving the same that can extend the duration of a battery.

In order to achieve the above object, the MP3 play apparatus according to the preferred embodiment of the present invention includes a panel, a battery capacity detector and a driver. The panel includes a plurality of pixels formed in an area where data lines and scan lines cross each other. The battery capacity detector is connected to a battery to detect the capacity of the battery, and transmits battery capacity information having information about the detected capacity of the battery. The driving driver analyzes the battery capacity information transmitted from the battery capacity detecting unit to determine the capacity of the battery, adjusts a bias driving voltage and a bias current according to the capacity of the battery, and corresponds to the adjusted bias current. A data current is provided to the pixels through the data lines to emit the pixels. Here, the luminance of the pixels is lowered step by step as the battery capacity decreases.

According to an embodiment of the present invention, a method of driving an MP3 play apparatus including a plurality of pixels formed in an area where data lines and scan lines intersect is connected to a battery, the method comprising: detecting a capacity of the battery; Generating battery capacity information having information about the detected capacity of the battery; Analyzing the generated battery capacity information to determine a capacity of the battery and adjusting a bias driving voltage and a bias current according to the capacity of the battery; And providing the data current corresponding to the adjusted bias current to the pixels through the data lines to emit the pixels. Here, the luminance of the pixels is lowered step by step as the battery capacity decreases.

Since the MP3 play apparatus and the method of driving the same according to the present invention reduce the bias driving voltage and the bias current according to the reduction of the capacity of the battery, power consumption can be reduced to improve the duration of the battery.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the MP3 play device and a method for driving the same according to the present invention.

1 is a block diagram showing an MP3 play apparatus according to an embodiment of the present invention.

Referring to FIG. 1, the MP3 play apparatus of the present invention includes a battery 100, a battery capacity detector 102, a drive driver 104, and a panel 106. Here, the MP3 player is an MP3 player or an MP3 phone.

The battery 100 is an alkaline battery and is a power source of an MP3 play device.

The battery capacity detector 102 is connected to the battery 100 to detect the capacity of the battery 100 in real time.

In addition, the battery capacity detector 102 transmits battery capacity information having information about the detected capacity of the battery 100 to the driving driver 104.

The driving driver 104 receives the algibi data input from the outside and the battery capacity information transmitted from the battery capacity detecting unit 102 and is applied to the panel 106 using the algibi data and the battery capacity information. Adjust the amount of data current.

The panel 106 includes a plurality of pixels formed in an area where data lines and scan lines intersect. Here, the pixels emit light when the data current is applied from the driving driver 104. Detailed description thereof will be described below with reference to the accompanying drawings.

Hereinafter, the operation of the MP3 play apparatus of the present invention will be described in detail.

The MP3 play apparatus is operated, and the capacity of the battery 100 gradually decreases accordingly.

Subsequently, the battery capacity detector 102 detects the capacity of the battery 100 in real time, and transmits the battery capacity information having information about the detected capacity of the battery 100 to the driving driver 104.

Subsequently, the driving driver 104 lowers the bias driving voltage and the bias current according to the battery capacity information.

Hereinafter, Table 1 will be described as an example.

 Battery capacity  Bias drive voltage  Luminance  100%  13 V  50 nit  75%  12 V  45 nit  50%  11 V  40nit  25%  10 V  35 nit

The driving driver 104 analyzes the battery capacity information to determine the capacity of the battery 100, and adjusts the bias driving voltage and the bias current according to the capacity of the battery 100 to adjust the data current. To control the amount of.

The drive driver 104 then applies the controlled data current to the panel 106.

As shown in Table 1, the MP3 play apparatus of the present invention lowers the bias driving voltage and the bias current as the capacity of the battery 100 decreases, and as a result, the brightness of the panel 106 is sequentially reduced. Preferably, the MP3 play apparatus of the present invention lowers the luminance little by little so that the user does not notice the decrease in the luminance as the capacity of the battery 100 decreases.

In short, unlike the conventional MP3 player, the MP3 player of the present invention lowers the bias driving voltage and the bias current as the capacity of the battery 100 decreases, thereby reducing power consumption. Therefore, the battery 100 of the MP3 play apparatus of the present invention can last longer than the battery of the conventional MP3 play apparatus.

FIG. 2 is a view illustrating a drive driver and a panel of FIG. 1.

Referring to FIG. 2, the panel 106 includes a plurality of pixels E11 to Emn formed in an area where the data lines D1 to Dm and the scan lines S1 to Sn cross each other.

The drive driver 104 includes a scan driver 200, a data storage unit 202, a data drive controller 204, and a data driver 206.

The scan driver 200 sequentially provides scan signals SP1 to SPn to the scan lines S1 to Sn.

Generally, although not shown in FIG. 2, each of the scan signals SP1 to SPn has a low logic area and a high logic area.

In this case, the pixels E11 to Emn emit light in the low logic region of the scan signals SP1 to SPn.

The data storage unit 202 stores algibi data input from the outside. In detail, the data storage unit 202 sequentially stores the ALGBI data which are sequentially input in the latch using the shift register.

The data driving control unit 204 reads the ALGBI data from the data storage unit 202 and receives the battery capacity information from the battery capacity detection unit 102.

Subsequently, the data driving control unit 204 transmits driving control signals to the data driving unit 206 according to the ALGBI data and the battery capacity information.

The data driver 206 adjusts the level of the bias driving voltage and the bias current according to the driving control signals transmitted from the data driving controller 204 and converts the corresponding data current into the data lines D1 to Dm. To apply.

3 is a block diagram illustrating a data driver of FIG. 2.

Referring to FIG. 3, the data driver 206 includes a data current controller 300, a bias drive voltage controller 302, a bias current controller 304, a bias current unit 306, and a data current unit 308. .

The data current control unit 300 transmits a data current control signal to the data current unit 308 according to the first driving control signal among the driving control signals.

Subsequently, the bias driving voltage controller 302 transmits a bias driving voltage control signal to the bias current unit 306 according to the second driving control signal among the driving control signals.

Subsequently, the bias current unit 306 lowers its bias drive voltage according to the transmitted bias drive voltage control signal.

Subsequently, the bias current controller 304 transmits a bias current control signal to the bias current unit 306 according to the second driving control signal.

Subsequently, the bias current unit 306 lowers the bias current according to the transmitted bias current control signal.

The bias current unit 306 provides the bias current corresponding to the current capacity of the battery 100 to the data current unit 308.

The data current unit 308 adjusts the data current according to the data current control signal transmitted from the data current control unit 300 and the bias current provided from the bias current unit 306.

In detail, the data current unit 308 provides the data lines D1 to Dm with a bias current correspondingly reduced as the capacity of the battery 100 decreases.

As a result, the luminance of the panel 106 is lowered as the capacity of the battery 100 decreases.

4 is a circuit diagram illustrating the bias driving voltage controller of FIG. 3.

Referring to FIG. 4, the bias drive controller 302 includes switches 400, 402, and 404 and a plurality of resistors R1, R2, R3, R4, and R5.

The bias driving voltage controller 302 switches the switches 400, 402, and 404 according to the second driving control signal.

In detail, the bias driving voltage controller 302 turns the switches 400, 402, and 404 in turn as the capacity of the battery 100 decreases.

For example, when the capacity of the battery 100 is 75%, the bias driving voltage controller 302 turns on the first switch 400 using the CTRL1 signal among the second driving control signals.

The third resistor R3 is connected in parallel to the second resistor R2, so that the resistance between the second node and the third node is lowered.

Thus, the resistance between the first node and the third node is also lowered. As a result, the current flowing from the first node to the third node is larger than the current flowing when the first switch 400 is turned off. In other words, the current flowing to the output stage becomes small, so that the bias driving voltage, which is the output voltage V _OUT , is lowered.

Subsequently, when the capacity of the battery 100 is 50%, the bias driving voltage control unit 302 uses the CTRL1 signal and the CTRL2 signal among the second driving control signals to form the first switch 400 and the second switch 402. Turn on.

The third resistor R3 and the fourth resistor R4 are connected in parallel to the second resistor R2, so that the resistance between the second node and the third node is lower.

Thus, the bias driving voltage, which is the output voltage V _OUT , is lowered.

The MP3 play apparatus of the present invention extends the duration of the battery 100 by adjusting the brightness in the above manner.

The switches 400, 402, and 404 according to one embodiment of the present invention are MOS transistors, respectively.

Although three switches have been mentioned above, it will be apparent to one skilled in the art that more switches can be used and that such variations do not affect the scope of the invention.

Preferred embodiments of the present invention described above are disclosed for purposes of illustration, and those skilled in the art having ordinary knowledge of the present invention will be able to make various modifications, changes, additions within the spirit and scope of the present invention, such modifications, changes and Additions should be considered to be within the scope of the following claims.

As described above, the MP3 play apparatus and the method of driving the same according to the present invention reduce the bias driving voltage and the bias current according to the reduction of the capacity of the battery, so that the power consumption is reduced and the battery duration is improved. There is this.

Claims (8)

A panel including a plurality of pixels formed in an area where the data lines and the scan lines cross each other; A battery capacity detector connected to a battery to detect the capacity of the battery and to transmit battery capacity information having information about the detected capacity of the battery; And Analyzing the battery capacity information transmitted from the battery capacity detection unit to determine the capacity of the battery, adjust the bias driving voltage and the bias current according to the capacity of the battery, and the data current corresponding to the adjusted bias current A driving driver to provide the pixels to the pixels through the data lines to emit the pixels, And the luminance of the pixels decreases in stages as the battery capacity decreases. The method of claim 1, wherein the drive driver, A data storage unit for storing the ALGBI data input from the outside and transmitting the ALGBI data; A data driving control unit which transmits driving control signals according to the ALGBI data transmitted from the data storage unit and the battery capacity information transmitted from the battery capacity detection unit; And And a data driver for adjusting an amount of the data current applied to the data lines according to driving control signals transmitted from the data driving controller. The method of claim 2, wherein the data driver, A data current controller configured to transmit a data current control signal for controlling the data current according to a first drive control signal among the transmitted drive control signals; A bias driving voltage controller configured to transmit a bias driving voltage control signal for controlling a driving voltage of a bias current as a reference of the data current according to a second driving control signal among the transmitted driving control signals; A bias current controller configured to transmit a bias current control signal for controlling the level of the bias current according to the second driving control signal; And A bias current unit configured to provide the bias current according to the transmitted bias driving voltage control signal and the bias current control signal; And And a data current unit configured to apply the data current to the data lines according to the data current control signal transmitted from the data current controller and the bias current provided from the bias current unit. The MP3 play apparatus of claim 3, wherein the bias driving voltage controller adjusts the driving voltage of the bias current using resistors connected in parallel. 5. The MP3 play apparatus according to claim 4, wherein the remaining resistors except for one of the resistors are connected to the switches, and the switches are controlled by the second driving control signal. 6. The MP3 play apparatus as set forth in claim 5, wherein each of the switches comprises a MOS transistor. A method of driving an MP3 play apparatus including a plurality of pixels formed in an area where data lines and scan lines cross each other, Detecting a capacity of the battery connected to the battery; Generating battery capacity information having information about the detected capacity of the battery; Analyzing the generated battery capacity information to determine a capacity of the battery and adjusting a bias driving voltage and a bias current according to the capacity of the battery; And Providing the data current corresponding to the adjusted bias current to the pixels via the data lines to emit light of the pixels, And the luminance of the pixels decreases in stages as the battery capacity decreases. The method of claim 7, wherein adjusting the bias driving voltage and the bias current, Analyzing the generated battery capacity information to determine a capacity of the battery; Generating a bias driving voltage control signal according to the identified battery capacity; Adjusting the bias drive voltage according to the generated bias drive voltage control signal; Generating a bias current control signal according to the identified capacity of the battery; And And adjusting the bias current according to the adjusted bias drive voltage and the generated bias current control signal.

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