TWI399009B - Rapid charging apparatus of handheld multimedia device - Google Patents

Description

Fast charging device for handheld multimedia device

The present invention relates to an electronic device, and more particularly to a fast charging device for a handheld multimedia device.

In recent years, the use of digital devices has become quite widespread due to the rapid growth of digital cameras, MP3s, and MP4s. Also, the multimedia device can be connected to a personal computer to receive data from a personal computer or to transfer data to a personal computer. The multimedia device can generally connect to the connection port of the personal computer through a connection line, and transfer data to and from the personal computer, such as a universal serial bus (USB) port. When multimedia devices and personal computers transmit data, some multimedia devices can receive power from a personal computer through a port to charge the battery. Due to the popularity of computers, it is becoming more and more common for the above-mentioned multimedia devices to be charged by connecting personal computers, so that how to quickly charge these multimedia devices through a personal computer becomes an important issue.

The invention provides a fast charging device for a handheld multimedia device, which can activate a fast charging function of the handheld multimedia device.

The invention provides a fast charging device for a handheld multimedia device, which comprises a first connecting unit, a second connecting unit and a fast charging source converting unit. The first connecting unit is coupled to the connecting base with the power source. The fast charge source conversion unit is coupled to the first connection unit to receive the voltage of the connection base, and provides the first voltage and the second voltage. Wherein the first voltage is between 3.2 and 1.1 volts and the second voltage is between 2.7 and 0.6 volts, and The voltage difference between the first voltage and the second voltage is between 0.5 and 0.8 volts. The second connection unit is coupled to the handheld multimedia device and the fast charge source conversion unit to transmit the first voltage and the second voltage to the handheld multimedia device.

In an embodiment of the invention, the fast charge source conversion unit includes a first resistor, a second resistor, a third resistor, and a fourth resistor. The first end of the first resistor is coupled to the voltage of the connection block, and the second end of the first resistor outputs the first voltage. The first end of the second resistor is coupled to the second end of the first resistor, and the second end of the second resistor is coupled to the ground voltage. The first end of the third resistor is coupled to the voltage of the connection block, and the second end of the third resistor outputs the second voltage. The first end of the fourth resistor is coupled to the second end of the third resistor, and the second end of the fourth resistor is coupled to the ground voltage.

The invention further provides a fast charging device for a handheld multimedia device, which comprises a first connecting unit, a second connecting unit, a switching switch and a fast charging source starting unit. The first connecting unit is coupled to the connecting base with the power source. The second connection unit is coupled to the handheld multimedia device. The switch has an input end, a first connection end, and a second connection end, wherein the input end is coupled to the first connection unit, and the first connection end is coupled to the second connection unit. The fast charge source activation unit is coupled to the second connection end of the switch and the second connection unit to receive the power of the first connection unit, and provides the first voltage and the second voltage to the second connection unit. Wherein, the first voltage is between 3.2 and 1.1 volts, the second voltage is between 2.7 and 0.6 volts, and the voltage difference between the first voltage and the second voltage is between 0.5 and 0.8 volts. In an embodiment of the invention, the fast charge source activation unit includes a first resistor, a second resistor, a third resistor, and a fourth resistor. The first end of the first resistor is coupled to the power source of the first connecting unit, and the second end of the first resistor outputs the first voltage. The first end of the second resistor is coupled to the second end of the first resistor, and the second The second end of the resistor is coupled to the ground voltage. The first end of the third resistor is coupled to the power source of the first connecting unit, and the second end of the third resistor outputs the second voltage. The first end of the fourth resistor is coupled to the second end of the third resistor, and the second end of the fourth resistor is coupled to the ground voltage. In an embodiment of the invention, the first connecting unit is a universal serial bus (USB) connector, and the second connecting unit is a universal serial bus port.

In one embodiment of the present invention, the first voltage and the second voltage are transmitted to the handheld multimedia device through a first data pin and a second data pin of the second connecting unit.

In an embodiment of the invention, the first connecting unit is an IEEE 1394 connector, and the second connecting unit is a universal serial bus port.

In an embodiment of the invention, the first connecting unit and the second connecting unit are respectively a connector having a transmission power source or a connection port having a transmission power source.

In an embodiment of the invention, the first connecting unit and the second connecting unit are connected interfaces of the same form or form.

In an embodiment of the invention, the first connecting unit and the second connecting unit are different types of connection interfaces.

Based on the above, the fast charging device of the handheld multimedia device of the present invention has a fast charging source conversion unit and a fast charging source activation unit that provide a first voltage and a second voltage that can activate the fast charging function of the handheld multimedia device. When the handheld multimedia device is coupled to the connector with the power supply through the fast charging device, the handheld multimedia device receives the first voltage and the second voltage to activate the fast charging function, thereby improving the charging speed of the handheld multimedia device.

The above described features and advantages of the present invention will be more apparent from the following description.

1 is a system block diagram of a fast charging device of a handheld multimedia device in accordance with an embodiment of the present invention. Referring to FIG. 1, in the embodiment, a handheld multimedia device 20 such as an iPad or an iPod. The fast charging device 100 includes a fast charging source conversion unit 110, a first connection unit 120, and a second connection unit 130. The first connection unit 120 can be a connector, and can be a universal serial bus (USB) connector (that is, a connector with a transmission power supply) to be connected to the universal serial bus connection of the motherboard 10.埠 (that is, the connection with the power supply). At this time, the first connection unit 120 is coupled to the motherboard 10 to receive the system voltage Vcc of the motherboard 10 (ie, the voltage of the connector), wherein the system voltage Vcc may be the operating voltage or standby voltage of the motherboard 10.

On the other hand, the second connection unit 130 can be a connection port, and can be a universal serial bus connection port (that is, a connection port with transmission power) to facilitate the connection line and the second of the handheld multimedia device 20. The connecting unit 130 is coupled to thereby couple the second connecting unit 130 to the handheld multimedia device 20. Moreover, the second connection unit 130 is coupled to the first connection unit 120 to transmit the system voltage Vcc of the motherboard 10 to the handheld multimedia device 20.

The fast charge source conversion unit 110 is coupled to the first connection unit 120 to receive the system voltage Vcc of the motherboard 10 and coupled to the second connection unit 130 to provide the first voltage V1 and the second voltage V2 to the handheld multimedia device 20. Wherein, the first voltage V1 is between 3.2 and 1.1 volts, the second voltage V2 is between 2.7 and 0.6 volts, and the voltage difference between the first voltage V1 and the second voltage V2 is between 0.5 and 0.8 volts. between. Moreover, the first voltage V1 and the second voltage V2 can turn on the fast charging function of the handheld multimedia device 20.

Further, the first voltage V1 of the fast charge source conversion unit 110 is transmitted to the first data pin DP1 of the second connection unit 130 to transmit the first voltage V1 to the handheld multimedia device 20 through the first data pin DP1. . The second voltage V2 of the fast charge source conversion unit 110 is transmitted to the second data pin DP2 of the second connection unit 130 to transmit the second voltage V2 to the handheld multimedia device 20 through the second data pin DP2. The first data pin DP1 may be a positive data (D+) pin of the universal serial bus connection port, and the second data pin DP2 may be a negative data (D-) pin of the universal serial bus connection port.

According to the above, when the handheld multimedia device 20 is coupled to the motherboard 10 through the fast charging device 100, the handheld multimedia device 20 receives the first voltage V1 and the second voltage V2 supplied from the fast charging source conversion unit 110, and The handheld multimedia device 20 receives the system voltage Vcc of the motherboard 10 through the first connection unit 120 and the second connection unit 130. At this time, the handheld multimedia device 20 is controlled by the first voltage V1 and the second voltage V2 to turn on its fast charging function, so that the handheld multimedia device 20 can receive the system voltage Vcc of the motherboard 100 and fasten its battery. Charge action.

It should be noted that the above embodiment uses a motherboard as a device for providing power, but in other embodiments, an electronic device having a universal serial bus bar can also be used as a device for providing power, for example, having a universal serial bus. Connect the 充电器 charger or power supply. Moreover, the first connection unit 120 can also be an IEEE 1394. The connector is configured to couple the IEEE 1394 port of the motherboard 10 to receive the system voltage Vcc of the motherboard 10. In addition, the form of the second connection unit 130 can be changed corresponding to the connection line connector of the handheld multimedia device 20. Furthermore, the first connection unit 120 and the second connection unit 130 of the embodiment of the present invention may be the connection interface of the same form (such as a universal serial bus or IEEE 1394) or the same form (joint or connection port), or may be different. Form or different form of connection interface, which can be determined according to design needs.

2 is a circuit diagram of the fast charge source conversion unit of FIG. 1. Referring to FIG. 2, in the embodiment, the fast charge source conversion unit 130 includes a first resistor R1, a second resistor R2, a third resistor R3, and a fourth resistor R4. The first end of the first resistor R1 is coupled to the system voltage Vcc, and the second end of the first resistor R1 outputs the first voltage V1. The first end of the second resistor R2 is coupled to the second end of the first resistor R1, and the second end of the second resistor R2 is coupled to the ground voltage. The first end of the third resistor R3 is coupled to the system voltage Vcc, and the second end of the third resistor R3 is outputting the second voltage V2. The first end of the fourth resistor R4 is coupled to the second end of the third resistor R3, and the second end of the fourth resistor is coupled to the ground voltage.

3 is a system block diagram of a fast charging device of a handheld multimedia device in accordance with another embodiment of the present invention. Referring to FIG. 1 and FIG. 3 , in the embodiment, the difference is the switch 310 of the fast charging device 300 and the fast charging source starting unit 320 . The input end 311 of the switch 310 is coupled to the first connection unit 120 to receive the power of the first connection unit 120 (ie, the system voltage Vcc), and the first connection end 312 of the switch 310 is coupled to the second connection unit 130 to transmit the system voltage. Vcc to the second connection unit 130, the second connection end 313 of the switch 310 is coupled to the fast charge source activation unit 320 to determine whether to transmit the system voltage Vcc to the fast charge source activation unit 320.

When the fast charge source activation unit 320 receives the system voltage Vcc, it will utilize The system voltage Vcc provides the first voltage V1 and the second voltage V2 and is transmitted to the second connection unit 130. At this time, the first voltage V1 and the second voltage V2 are transmitted to the handheld multimedia device 20 through the second connection unit 130 to enable the fast charging function of the handheld multimedia device 20, thereby enabling the handheld multimedia device 20 to utilize the system voltage Vcc pair. Its battery is fast charged. The circuit structure of the fast charge source activation unit 320 is similar to that of the fast charge source conversion unit 110, and details are not described herein again.

In summary, the fast charging device of the handheld multimedia device of the embodiment of the present invention has a fast charging source conversion unit and a fast charging source activation unit that provide a first voltage and a second voltage that can activate the fast charging function of the handheld multimedia device. . When the handheld multimedia device is coupled to the connector of the motherboard (or the connector of the electronic device) through the fast charging device, the handheld multimedia device receives the first voltage and the second voltage to activate the fast charging function, thereby enhancing the handheld device. The charging speed of the multimedia device.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

10‧‧‧ motherboard

20‧‧‧Handheld multimedia device

100, 300‧‧‧ fast charging device

110‧‧‧fast charge source conversion unit

120‧‧‧First connection unit

130‧‧‧Second connection unit

310‧‧‧Toggle switch

311‧‧‧ input

312‧‧‧ first connection

313‧‧‧Second connection

320‧‧‧fast charge source starter unit

DP1‧‧‧First data pin

DP2‧‧‧Second data pin

V1‧‧‧ first voltage

V2‧‧‧second voltage

R1‧‧‧first resistance

R2‧‧‧second resistance

R3‧‧‧ third resistor

R4‧‧‧fourth resistor

Vcc‧‧‧ system voltage

1 is a system block diagram of a fast charging device of a handheld multimedia device in accordance with an embodiment of the present invention.

2 is a circuit diagram of the fast charge source conversion unit of FIG. 1.

3 is a system block diagram of a fast charging device of a handheld multimedia device in accordance with another embodiment of the present invention.

10‧‧‧ motherboard

20‧‧‧Handheld multimedia device

100‧‧‧ fast charging device

110‧‧‧fast charge source conversion unit

120‧‧‧First connection unit

130‧‧‧Second connection unit

DP1‧‧‧First data pin

DP2‧‧‧Second data pin

V1‧‧‧ first voltage

V2‧‧‧second voltage

Vcc‧‧‧ system voltage

Claims (18)

A fast charging device for a handheld multimedia device, comprising: a first connecting unit coupled to a power supply connector; a fast charging source switching unit coupled to the first connecting unit to receive the voltage of the connector, and Providing a first voltage and a second voltage, wherein the first voltage is between 3.2 and 1.1 volts, the second voltage is between 2.7 and 0.6 volts, and between the first voltage and the second voltage a voltage difference between 0.5 and 0.8 volts; and a second connection unit coupled to the handheld multimedia device and the fast charge source conversion unit to transmit the first voltage and the second voltage to the handheld multimedia Device. The fast charging device of the handheld multimedia device of claim 1, wherein the fast charging source conversion unit comprises: a first resistor, the first end of the first resistor is coupled to the voltage of the connector, The second end of the first resistor outputs the first voltage; the second resistor is coupled to the second end of the first resistor, and the second end of the second resistor is coupled to a ground voltage a third resistor, the first end of the third resistor is coupled to the voltage of the connector, the second end of the third resistor outputs the second voltage, and a fourth resistor, the first end of the fourth resistor The second end of the third resistor is coupled to the ground voltage. The fast charging device of the handheld multimedia device according to claim 1, wherein the first connecting unit is a universal serial bus (Universal Serial) Bus, USB) connector, the second connection unit is a universal serial bus connection port. The fast charging device of the handheld multimedia device of claim 3, wherein the first voltage and the second voltage respectively pass through a first data pin and a second data pin of the second connecting unit Transfer to the handheld multimedia device. The fast charging device of the handheld multimedia device of claim 1, wherein the handheld multimedia device is an iPad or an iPod. The fast charging device of the handheld multimedia device of claim 1, wherein the first connecting unit is an IEEE 1394 connector, and the second connecting unit is a universal serial bus port. The fast charging device of the handheld multimedia device of claim 1, wherein the first connecting unit and the second connecting unit are respectively a connector having a transmission power source or a port having a transmission power source. The fast charging device of the handheld multimedia device of claim 7, wherein the first connecting unit and the second connecting unit are connected interfaces of the same form or form. The fast charging device of the handheld multimedia device of claim 7, wherein the first connecting unit and the second connecting unit are different types of connecting interfaces. A fast charging device for a handheld multimedia device, comprising: a first connecting unit coupled to a connector having a power supply; a second connecting unit coupled to the handheld multimedia device; and a switch having an input end, a first connection end and a second connection And the first connection end is coupled to the second connection unit; and a fast charge source activation unit coupled to the second connection end of the switch and the second Connecting the unit to receive the power of the first connecting unit, and providing a first voltage and a second voltage to the second connecting unit, wherein the first voltage is between 3.2 and 1.1 volts, and the second voltage is Between 2.7 and 0.6 volts, and the voltage difference between the first voltage and the second voltage is between 0.5 and 0.8 volts. The fast charging device of the handheld multimedia device of claim 10, wherein the fast charging source activation unit comprises: a first resistor, the first end of the first resistor is coupled to the power of the first connecting unit The second end of the first resistor outputs the first voltage; the second resistor is coupled to the second end of the first resistor, and the second end of the second resistor is coupled to the second end a third resistor, the first end of the third resistor is coupled to the power supply of the first connecting unit, the second end of the third resistor outputs the second voltage, and a fourth resistor, the fourth resistor The first end of the fourth resistor is coupled to the second end of the third resistor, and the second end of the fourth resistor is coupled to the ground voltage. The fast charging device of the handheld multimedia device of claim 10, wherein the first connecting unit is a universal serial bus bar connector, and the second connecting unit is a universal serial bus bar port. The fast charging device of the handheld multimedia device of claim 12, wherein the first voltage and the second voltage are respectively transmitted through the second connecting unit A first data pin and a second data pin are transmitted to the handheld multimedia device. The fast charging device of the handheld multimedia device of claim 10, wherein the handheld multimedia device is an iPad or an iPod. The fast charging device of the handheld multimedia device of claim 10, wherein the first connecting unit is an IEEE 1394 connector, and the second connecting unit is a universal serial bus port. The fast charging device of the handheld multimedia device of claim 10, wherein the first connecting unit and the second connecting unit are respectively a connector having a transmission power source or a port having a transmission power source. The fast charging device of the handheld multimedia device of claim 16, wherein the first connecting unit and the second connecting unit are connected interfaces of the same form or form. The fast charging device of the handheld multimedia device of claim 16, wherein the first connecting unit and the second connecting unit are different types of connecting interfaces.