TWM377801U - A dual mode mobile and the power supply system therein - Google Patents

Abstract

This utility model provides a power supply system for a dual model mobile, comprising: a power module, a first communication block, a second communication block, a switch block and a logic control circuit, wherein the switch block switches the first and second communication blocks which are electrically connected to the power module; and the logic control circuit includes: a first input terminal, a second input terminal, and an output. Wherein the backlight is supplied for power and the display screen is still bright by the logic control circuit during switching the mobile from the first communication block to the second communication block.

Description

M377801 V. New description: [New technology jaw domain] This new type is about a dual-mode mobile phone, and especially relates to a dual-mode mobile phone power supply system. [Prior Art] * The current 'dual-mode mobile phone' has become more and more popular among mobile phone users. Dual-mode mobile phone users can choose to use two different mobile networks. For example, the mobile communication network mainly has a GSM network, a PHS network, and a CDMA network, and the dual mode mobile phone can be a GSM/pHS combination, a GSM/CDMA combination, or a PHS/CDMA combination. Using a dual mode phone,

Effectively avoid problems such as dropped calls, difficult calls, and poor sound quality.

Although these dual-mode phones can switch from one mobile network communication mode to another mobile network communication mode without removing the _ card, the dual-mode mobile phone is in the 槿垚 'new content】

In view of the prior art, the museum provides an aspect of the four-electrical type, providing a power, power module, first communication module, and second communication mode for the dual-mode mobile phone. - a first t?, and and a logic control circuit. Wherein, the first communication module has an end. The cutting end is: the wheel out end; the second communication module has the electrical property between the second potential output group and a logic control circuit is connected to the group = the button is connected to the first potential output. The end and the second potential output end; "contacting the two end 'electrically connected power supply module; and - the output end, electrically switching the backlight of the I flute single 70, wherein when the dual mode mobile phone from the "communication module" In the case of the second communication module, the second input end of the logic control circuit supplies power to the moonlight 7G early, and keeps the display screen continuously lit. Imc preferably that the communication mode supported by the dual mode handset is a combination of any two of the GSM communication network, the communication network, and the CDMA communication network. For 2-way, the communication mode supported by the dual-mode mobile phone can also be a combination of any two of a 4CDMA communication network, a WCDMA communication network, and a cDMA 2〇〇〇 communication network. Preferably, if the output signal is high to illuminate the liquid crystal display screen, the second input signal of the logic control circuit is high in the switching mode. Preferably, the 'logic control circuit is a wafer' such as a wafer of TED 74 series or CMOS 4000 series wafers. Alternatively, the logic control circuit is an integrated circuit composed of discrete components. Preferably, when the output signal is a high potential to illuminate the liquid crystal display screen, the first input signal and the second input signal of the logic control circuit are in a low potential in the power saving mode of the standby state. The present invention also provides a mobile phone comprising at least a communication module of a first mobile network, a communication mode M377801 group different from a second mobile network of the first mobile network, a power supply system, and a display screen having a backlight unit. The power supply system includes a power module, a first communication module, a second communication module, a switching module and a logic control circuit. The first communication module has a first potential output. The second communication module has a second potential output. The switching module is configured to switch the electrical connection between the first communication module and the second communication module and the power module. The logic control circuit includes: a first input terminal, a second input terminal, and an output terminal. The first input end of the logic control circuit is electrically connected to the first potential wheel output end and the second potential output end. The second input end of the logic control circuit is electrically connected to the power module. One of the logic control circuit outputs • The terminal is electrically connected to the backlight unit of the display screen. Wherein 'when the dual mode handset is switched from the first communication module to the second communication module', power is supplied to the backlight unit through the second input of the logic control circuit, and remains unlit for continuous illumination. Preferably, the mobile phone is a dual mode mobile phone. For example, the mobile phone is any one of a GSM/PHS mobile phone, a GSM/CDMA mobile phone, and a CDma/PHS mobile phone. For 3G networks, the handset is either a td-SCDMA/WCDMA handset, a WCDMA/CDMA2000 handset, or a CDMA 2000/TD_SCDMA handset. In addition, the phone can also be a multi-mode phone. Preferably, when the handset is in the switching mode, the output signal of the logic control circuit supplies power to the backlight unit to illuminate the liquid crystal display. Preferably, when the mobile phone is in the power saving mode of the standby state, the output signal of the logic control circuit stops supplying power to the backlight unit, thereby causing the liquid crystal display to be extinguished. * With the power supply system of this new type, the liquid crystal display screen of the user's mobile phone does not appear black screen even when switching. 6 M377801 [Embodiment] The present invention will be described in detail below with reference to the drawings. Throughout the description, the same reference numerals indicate the same parts.

As mentioned earlier, dual-mode phones can be broadly classified into GSM/PHS dual-mode phones, GSM/CDMA dual-mode phones, and PHS/CDMA dual-mode phones, depending on the classification of existing mobile communication networks. It should be understood by those skilled in the art that with the rapid development of mobile communication technologies, the number of mobile communication operators will increase, and the functions of mobile networks will become stronger and stronger. As a result, dual-mode phones will have more compatible communication modes. • For example, TD-SCDMA, WCDMA, and CDMA 2000, which currently support 3G, and so on. Accordingly, the dual mode handset can also be a TD-SCDMA/WCDMA combination, or a WCDMA/CDMA 2000 combination, or a TD-SCDMA/CDMA 2000 combination. It should be understood by those skilled in the art that the term "dual mode" in this application means not only a mobile phone compatible with two different communication networks, but also a multi-mode mobile phone having two or more different communication networks. Those of ordinary skill in the art will appreciate that dual mode handsets and/or multimode handsets are also included within the scope of the claimed invention. Figure 1 is a schematic diagram showing the switching of a dual-mode mobile phone. As shown in FIG. 1, the dual mode handset 1 includes two different mobile network communication modes, namely, GSM mode 102 and CDMA mode 104. One of ordinary skill in the art will appreciate that GSM mode 102 and CDMA mode 1〇4 are just one embodiment of a dual mode handset' but the purpose of this application is not limited thereto. E.g,

The dual mode handset can be a combination of communication modes of two or more other mobile networks. Referring to Fig. 1 ', the dual mode handset can switch from GSM mode 1 to 2 to CDMA 7 M377801 mode 104, or can also switch from CDMA mode ι 4 to GSM mode 102, depending on the communication environment or other setting parameters. Figure 2 is a schematic diagram of the power supply system for this dual-mode mobile phone. Referring to FIG. 2, the dual mode mobile phone 200 includes at least a switching module 2〇2, a first communication module 204, a second communication module 2〇6, a logic control circuit 2〇8, a backlight unit 210, a display screen 212, and a power supply. Module 214. For example, the first communication module may be a GSM communication module, and the second communication module may be a CDMA communication module, but the present creation is not limited thereto. Wherein, when the switching module 202 is electrically connected to the GSM communication module, the dual-mode mobile phone is equivalent to the k-mode: the single-mode mobile phone, and the GSm communication module outputs the control signal (for example, the potential) to the logic control circuit. 2〇8, and the output signal of the logic control circuit supplies power to the backlight unit 21G, so that the display screen 212 is lit; similarly, when the switching module 2〇2 is electrically connected to the CDMA communication module, the dual-mode mobile phone is equivalent to CDMA. In the single mode mobile phone in the communication mode, the cdm^ U group outputs a control signal (for example, a high potential) to the logic control circuit 208' and the output signal of the logic control circuit supplies power to the backlight unit 210. Bright 'The above process is as shown in the dotted line of Figure 2, no. However, when switching from GSM mode to cdma mode, or from DMA mode to GSM mode, the dual-mode mobile phone must first start the system==initialization process. At this time, the liquid crystal display screen is in the reset process. . If the switching time is too long, the user's mobile phone screen may be black-screened for a period of time, resulting in a strong user experience. She ϋΐ 地 解决 解决 解决 解决 解决 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶Display text or information. Figure 3 is a schematic diagram of the principle of the power supply system for dual-mode mobile phones in various states. Referring to FIG. 3, the dual-mode mobile phone 3〇〇 power supply system includes at least a switching module 302, a first communication module 3〇4, a first communication module 306, a side control circuit 308, and a backlight unit 310. ^ 312, and power module 314. In this case, the switching module 3〇2 corresponds to the switching module 202 of FIG. 2; the first communication module 304 corresponds to the first communication module 204 of FIG. 2; the second communication module 306 corresponds to the 2, the second communication module 206; the backlight unit 310 corresponds to the backlight unit 21A of FIG. 2; and the display screen 312 corresponds to the display screen 212 of FIG. 2, obviously, the third picture is different from the second picture The logic control circuit further includes a second input signal, that is, a signal from the power module 314. The switching module 302 preferably includes a switch for switching the dual mode handset from one communication module to another. Generally, when the first communication module or the second communication module is in operation, the backlight unit 312 is supplied with a light source by the backlight unit 310, and the backlight unit is controlled by the first input signal of the logic control circuit 308. In other words, when the first input signal is high, the first communication module or the second communication module supplies power to the backlight unit 7L, and is not lit; when the first input signal is low, the backlight unit 70 is at In the power off state, the display screen is extinguished. Referring again to FIG. 2, when the dual mode mobile phone 200 is in the GSM communication mode or the CDMA communication mode, the first input signal of the logic control circuit is high, the liquid crystal display screen is free, and the dual mode mobile phone 200 is in a standby state. In the mode, the first input signal of the logic control circuit is low, and the liquid crystal display is extinguished. However, when the dual-mode mobile phone switches from GSM mode to (3) tender mode (or switches from CDMA mode to (four) mode), the secret setting will lead the M377801 to cause the first input signal to become low, and the LCD display screen Turn off the power and turn it off. However, as shown in FIG. 3, when the dual mode handset 3 switches from one communication mode to another, although the system performs a reset and initialization process, the logic control circuit from the power module 314 The second input signal is used to control the backlight unit such that the display screen 312 is continuously illuminated. In order to gain a deeper understanding of the logic control circuit of Fig. 3, Fig. 4 is a schematic diagram of the principle of the logic control circuit in the dual mode mobile phone of Fig. 3. As an example, let us assume that the first input signal of the logic control circuit is

PWM

The second input signal is a V-BL signal, and the output of the logic control circuit is the LCM-EN signal. Referring to FIG. 4, the logic control circuit is an OR gate, which is in the art. One of ordinary skill in the art will appreciate that the OR gate of Figure 4 is only one exemplary embodiment of the present application, and that all wafers or discrete components that can implement an OR gate can be used as the logic control circuit. Taking the circuit shown in the figure as an example, the control circuit includes pWM 仏 1 ' V_BL signal 2 'ground voltage 3 ' power supply voltage 5, and LCM ΕΝ L number 4 ^ where ' V_BL 疋 such as the start-up mark controlled by the CPU LCM_EN is an enable signal for controlling the backlight unit to turn the liquid crystal display on or off. There is a logical expression: LCM-EN = PWM or V_BL In more detail, the logic can be described as: When PWM is high, V-BL is high, LCM_EN is high; when PWM is high' When V-BL is low, lCM_EN is high • potential; when PWM is low and V_BL is high, ENEN is high M377801 potential; when PWM is low and vjbl is low, LCM-EN is Low potential. It will be understood by those skilled in the art that the liquid crystal display may be illuminated when LCM_EN is at a high potential, or may be illuminated when LCM_EN is at a low potential. The difference is that when LCM_EN is low-level to illuminate the LCD screen, an inverter can be added after the output signal of the OR gate. At this time, the above logic expression can be changed to: LCM_EN = n〇 t (PWM or V_BL) Based on the understanding of the above logical relationship, we continue to analyze the logic state of the dual-mode mobile phone in the normal working mode, power saving mode and switching mode according to the present invention. Among them, the LCM-EN high-potential liquid crystal display screen is taken as an example: (1) Normal working mode When the dual-mode mobile phone is in GSM communication mode or CDMA communication mode, as long as the PWM signal is high, the enable signal LCM_EN is The high-potential 'LCD backlight unit is powered and the LCD screen lights up. At this time, the bit state of the start 彳§ V_BL has no effect on LCM_EN. In order to save energy, we may wish to set V:BL to a low level in this mode. (2) Power-saving mode. The dual-mode mobile phone is in GSM communication mode or CDMA communication mode. When the mobile phone is in the power-saving mode in standby mode (not shown in Figure 3), it can be passed according to the logical relationship just described. Control V-BL is low and PWM is low. At this time, through the "or" gate, lcm en 1VU//801 - is low, the backlight unit of the LCD is in the power-off state, and the liquid crystal display screen is turned off. (3) Switching mode Since the dual-mode mobile phone switches from one communication mode to another communication mode, the system needs to be reset and initialized. If the V_BL signal is kept high, the state of the PWM signal is not available for LCM_EN. Influence 'and LCM_EN continues to be high. During this switching process, • The backlight unit of the LCD is still powered, and the LCD screen continues to illuminate without being extinguished. It can be seen from the above three modes that the dual-mode mobile phone in the prior art is compared with the dual-mode mobile phone according to the present invention: in the normal working mode and the power-saving mode, the functions implemented by the logic control circuit can be the same, and the liquid crystal is not displayed. The status is the same (both in the light state). For example, the LCM_EN signal green level state is the same as the level state of the PWM signal. When the LCM-EN is 鬲 potential, the liquid crystal display illuminates, and when LCM_EN is low, the liquid crystal dies are extinguished. However, in the switching mode, the prior art dual-mode mobile phone HCM-EN is low-potential and the liquid crystal display screen is in a black screen state; compared to the lower double-mode mobile phone of the present invention, the V_BL signal continues to maintain a high potential. The LCD screen is lit. In other words, we can understand that when the dual-mode mobile phone is in the switching mode, the power supply control of the liquid crystal display screen is taken over by the start signal VjBL. One of ordinary skill in the art will appreciate that the logic control circuit 308 can be a wafer, such as a 74 series of TTL or a 4000 series of CMOS. It will be understood by those skilled in the art that the logic control circuit 308 can also be an integrated circuit composed of a number of discrete components, such as a control circuit implemented by any combination of resistors, capacitors, and transistors. 12 M377801 In the following, Table 1 shows the status list of the input and output signals of the control circuit in Figure 4 in various operating modes. Among them, the high potential is indicated by "H" and the low potential is represented by "L". When the dual-mode mobile phone is in the normal display state, the PWM signal is H, the V_BL signal is L, and the LCM_EN is Η; when the dual-mode mobile phone is in the normal standby state, the PWM signal is L, the V_BL signal is L, LCM_EN is L; When the dual-mode mobile phone is in the switching state, the PWM signal is L, the VJBL signal is Η, and LCM_EN is Η.

PWM V_BL LCM_EN Normal display state Η L 正常 Normal standby state LLL switching state L Η Η Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and anyone skilled in the art can avoid the spirit of the present invention. And within the scope, the various modifications and refinements may be made, and therefore the protection scope of the present invention is defined by the scope of the patent application. [Simple diagram of the diagram] Figure 1 shows the schematic diagram of the switching of the dual-mode mobile phone; Figure 2 is a schematic diagram of the principle of the power supply system for the dual-mode mobile phone, and Figure 3 is a schematic diagram for the dual-mode mobile phone. Schematic diagram of the principle of the power supply system in various states; and 'Figure 4 shows the schematic diagram of the logic control circuit of the dual-mode mobile phone in Figure 3, M377801. [Main component symbol description] Dual mode mobile phone 100 GSM communication module 102 CDMA communication module 104 Dual mode mobile phone 200 switching module 202 First communication module 204 Second communication module 206 Logic control circuit 208 Backlight unit 210 Display screen 212 Power module 214 dual-mode mobile phone 300 switching module 302 first communication module 304 second communication module 306 logic control circuit 308 backlight unit 310 display screen 312 power module 314 14

Claims (1)

Sixth, Shen 凊 patent scope: - a power supply system for dual-mode mobile phones - power module; Including: - the first - communication module, with - goods _ ' brother potential wheel outlet. Brother one communication module, with - the first, - cut the drag of a potential wheel out; group fisher with π z pass仏 组 和 and the second 诵俨捃 and Μ. Electrical connection between the power modules; 逋 "mode-logic control circuit, including: _ - the first input, electrically connected to the first potential private mountain ° Haidi two potential output; do not come out and brother two The input terminal is electrically connected to the power-receiving group; the output terminal is 'f-connected to the backlight unit of the display screen; the input terminal supplies power to the backlight unit, and remains switched to the power supply system of the third mobile phone From the TM communication module, the x-th, "when the group is set, through the first screen of the logic control circuit continues to point", as claimed in the patent system, the power supply system described in the first item, where the brother- a communication module and a combination of any two of the second communication mold mosquito GSM communication module, the stern communication module, and the CDMA communication module. The power supply system described in claim 1 of the patent scope, wherein The first L-branch group and the second pass-letter module are a combination of a TD_SCDMA communication mode 15 communication group, a WCDMA communication module, and a CDMA 2000. 4. The power supply system as described in claim 1 Among them, the display screen is a liquid crystal display screen. 5. The power supply system of claim 4, wherein if the power supply signal of the optical unit is a high-potential liquid crystal display screen, the first and second communication modules are The second input signal of the switching control circuit between the groups is a high voltage. The system is any one of the above-mentioned claims, wherein the logic control circuit is a wafer. For example, the power supply system described in claim 6 of the patent application scope, wherein the 疋 TTL 74 series or the CM0S 4000 series wafers. 8 · If the patent application power supply system, the integrated circuit thereof. According to any one of the fifth items, the logic control circuit is composed of discrete components. The power supply system of the 佴 f ^ ^ 如 , , , , , , , 电位 电位 电位 电位 电位 电位 电位 电位 电位 电位Bright liquid crystal display screen, in the standby mode, the first input signal and the 16th input signal of the logic control circuit are both low potential ^ITW year 曰 1 〇·如申4 Patent scope No. 】 Item / Switching module has - switch: ..., system, its order, the 11 · a mobile phone, at least - module, different; ^ 哕筮 动 network A first communication stem s brother - mobile network - the second communication network of the second mobile network, a second seconds, one of the roads, one Gan, money and one light unit - continued Wherein, the power supply system comprises: a competition for a number of shoulders. - a power module; two [- communication modules having a - potential output terminal; - a first communication module having a second potential wheel output; Switching module, switching the first communication module and the electrical connection with the power module; and 5^- logic control circuit, comprising: an input terminal electrically connected to the first potential-potential output The second input terminal is electrically connected to the power module - the output terminal is electrically connected to the backlight unit of the display screen. Wherein, when the dual mode mobile phone is from the first pass, the second is the second Switch to the group, and control the electric power to the umbrella through this logic. Valley of the two power input Takuji Wu early February to ί, electricity, and the display screen remains lit continuously. The hand of the mobile phone 12. The application of patentable scope of item 11, wherein '17 M377801 The machine is a dual-mode phone. 13. The mobile phone of claim 12, wherein the mobile phone is any one of a GSM/PHS mobile phone, a GSM/CDMA mobile phone, and a CDMA/PHS mobile phone. 14. The mobile phone according to claim 12, wherein the mobile phone is any one of a TD-SCDMA/WCDMA mobile phone, a WCDMA/CDMA2000 mobile phone, and a CDMA2000/TD-SCDMA mobile phone. 15. The mobile phone according to claim 2, wherein the logic control signal stops supplying power to the backlight unit when the power is in the standby power saving mode. Play 18