50results about How to "Extend talk time" patented technology

In one aspect this invention provides a DC-DC converter that has a switch mode part for coupling between a DC source and a load, the switch mode part providing x amount of output power; and that further has a linear mode part coupled in parallel with the switch mode part between the DC source and the load, the linear mode part providing y amount of output power, where x is preferably greater than y, and the ratio of x to y may be optimized for particular application constraints. In a further aspect there is a radio frequency (RF) transmitter (TX) for coupling to an antenna, where the TX has a polar architecture having an amplitude modulation (AM) path coupled to a power supply of a power amplifier (PA) and a phase modulation (PM) path coupled to an input of the PA.

The invention discloses a charging device and a charging method of a mobile terminal, which is applied to the mobile terminal with a system connector or a special charging interface. The mobile terminal is connected with an external charger. The invention is characterized in that the charging device comprises a digital baseband unit, an analog baseband unit, an or gate device, a charging module and batteries. As a platform based on software control charging is adopted, various unconventionalities of charging function in cellphone design are resolved, thereby improving the reliability of charging function of such cellphone, additionally further being capable of reducing the development difficulty of charging module softwares, shortening the debugging period of charging modules, and improving the quality of research and development.

The invention discloses a device for improving the transmitting and receiving isolation of a mobile terminal, which is positioned between a diplexer and a signal receiving terminal. The device comprises a first coupler which is connected with the diplexer and the signal receiving terminal and is also connected with a modulation circuit and used for coupling a leak signal transmitted from the diplexer with a modulated signal transmitted from the modulation circuit; then the signal after coupling is transmitted to the receiving terminal; and the device also comprises the modulation circuit which is used for modulating a part of an emitting signal and sending the signal after modulation to the first coupler and a second coupler which is connected with the diplexer and an emitting terminal and is also connected with the modulation circuit and is used for coupling a part of the emitting signal to output to the modulation circuit. The invention also discloses a corresponding method to determine the modulation circuit structure and the modulation values of the amplitude, the delay and the phase regulating values of the part of the emitting signal according to the leak signal; the modulation signal is coupled with the leak signal, and the signal after coupling is input into the receiving terminal. The invention can improve the quality of receiving signals, reduce the requirements of the diplexer and so on to isolation and extend standby time.

The power management module distributes in top level system control module and each sub-system module. The power management of each system is decided and controlled by state machine. The state machine has three states: sleep, idle and working. The top level power management module is controlled by a low frequency clock that is valid when the top level system is under sleep state. At that time all sub-system are under sleep state. The low frequency clock uses a 32k crystal oscillator. When the system is under sleep state, the system high frequency clock is closed, so that base band controller, base band processor and all peripherals are closed.

A multiple power mode amplifier provides a low and a high power mode without using switches. This amplifier may be used in RF applications such as mobile telephones. In the low power mode, the power consumption of the amplifier is reduced, which will increase operation time, especially important for battery-operated devices. In one implementation, the amplifier includes a number of impedance matching network units, impedance transformer, and a power stage.

The invention provides a means of illumination of a mobile communication terminal and the mobile communication terminal. The means of illumination comprises that the mobile communication terminal detects the environment light intensity through a photosensitive sensor; the mobile communication terminal controls the working status of an illuminating device of the mobile communication terminal through the environment light intensity detected. The invention controls the brightness of the screen and the keyboard of the mobile communication terminal via the photosensitive sensor so that the mobile communication terminal can automatically adjust the brightness of the screen and the keyboard backlight according to the light intensity of the application environment so as to reduce the current consumption of the mobile communication terminal, which greatly improves the time of standby and conversation under a stable battery capacity.

An approach provides for limiting power adjustment in a wireless system (e.g., cellular network) to extend, for example, talk time. Parameter values specifying operating conditions of the wireless terminal are collected for power adjustment of a radio frequency (RF) amplifier within the wireless terminal. A power adjustment factor is computed based on the parameter values, wherein the power adjustment factor is used adjust limiting power of the RF amplifier.

The invention is suitable for the technical field of communication and provides a power saving control method and a power saving control system for a conversation process and a mobile terminal. The method comprises the following steps: detecting and acquiring the moving direction and arranging direction of the mobile terminal in a current conversation; judging whether the moving direction and arranging direction of the mobile terminal in the current conversation meet a switching condition for opening or closing backlight; and when the moving direction and arranging direction of the mobile terminal in the current conversation are judged to meet the switching condition, opening or closing the backlight of the mobile terminal according to the switching condition. In the embodiment of the invention, the moving direction and arranging direction of the mobile terminal in the current conversation are detected and acquired; whether the moving direction and arranging direction of the mobile terminal in the current conversation meet the switching condition for opening or closing backlight is judged; and when the moving direction and arranging direction of the mobile terminal in the current conversation are judged to meet the switching condition, the backlight of the mobile terminal is opened or closed according to the switching condition. Therefore, power consumption of the mobile terminal in the conversion process is reduced, conversion time is prolonged and convenience is brought to user.

A method and a device for tuning power amplifier (PA, 203) properties such as back-off. A peak-to-average value (PAR) of the amplifier input signal is first obtained by control means (206) and then used for adjusting the power amplifier (203) with tuning means (204, 208, 210) functionally connected to the amplifier (203). The suggested solution is advantageously exploited in a wireless communications device like a mobile terminal to optimize the performance thereof by, for example, reducing the power dissipation in the transmitter.

In one aspect, the invention provides a DC-DC converter having a switch-mode portion coupled between a DC source and a load, the switch-mode portion providing x amount of output power; and having a connection between the DC source and the load The switch mode section is coupled in parallel with the linear mode section, the linear mode section provides y amount of output power. x is preferably greater than y, and the ratio of x to y can be optimized for specific application constraints. In another aspect, the present invention provides an RF transmitter (TX) coupled to an antenna. The TX has a polar structure and includes an amplitude modulation (AM) path coupled to a power amplifier (PA) supply and a phase modulation (PM) path coupled to the PA input.

The invention discloses a method and a device for reducing invalid dialling of a mobile phone. The method comprises: firstly, setting a dialling number rule, such as the dialling number rule based on number length; then, comparing the number with the dialling number rule when a user dials one number; if conforming, starting the RF power amplifier of the mobile phone and the corresponding circuit; and dialling out the dialling number. The invention improves the traditional mobile phone dialling method, prejudges the dialled number especially in the condition that the dialled number is an invalid number, thus lowering the power consumption of the mobile phone, and prolonging the conversation time of the mobile phone.

The invention discloses an audio and video transmission system and a method of a video phone comprising: connecting an intelligent mobile phone supporting a video phone function with a computer through a USB interface, and outputting the video phone audio and video data to a computer end to process and play. Based on a standard video telephone scheme, a default audio and video output module is transferred to a computer end, so that an audio and video output device on a mobile terminal is in a turnoff or a standby state during the video communication process, thereby saving charge consumption for the mobile device. At the same time, because the mobile device and the computer are in a connection state, the mobile device can also get charge supplement through the USB interface, and greatly prolongs a continuous communication time of the video communication. The beneficial effects of invention are that the output device with more charge consumption during the video communication process is in the turnoff or standby state through changing an output current direction of the audio and video data, the corresponding output data is processed and displayed by the computer end, thereby effectively prolonging the communication time of the video telephone.

The invention discloses a helical antenna, and the antenna comprises a hollow dielectric column, a radiator, and a feed assembly. The hollow dielectric column is of a column-shaped structure with the opened lower end and the closed upper end. The radiator comprises four groups of helical arms, wherein each group of helical arms comprises three helical arms, and the lower ends of the three helical arms are connected together and are connected with a group of feed ports. The four groups of helical arms are arranged in parallel at equal intervals. The four groups of helical arms are wound from the lower end of the hollow dielectric column to the upper end of the hollow dielectric column, and are disposed on the external surface of the hollow dielectric column. The feed assembly is disposed in the lower end of the hollow dielectric column. The feed assembly comprises one input port, a polarized power dividing device, and four output ports. The four output ports are correspondingly connected with the feed ports of the four groups of helical arms in a one-one manner. The input port receives an antenna signal. The helical antenna provided by the invention can improve the antenna efficiency, is lower in transmission loss of a satellite terminal, reduces the heating quantity during operation, and prolongs the communication time.

The present invention relates to a charging circuit realized on a mobile phone and a charging method thereof. The charging circuit comprises two dry battery connecting ends which are electrically connected, a dry battery voltage detecting end, a capacitor filter circuit, an inductor energy storing circuit, a voltage switcher, an RC circuit consisting of a capacitor and a resistor, an enabling pin, a feedback circuit consisting of a resistor and an RC filter circuit, a protecting resistor and a diode. The mobile phone charging circuit and the charging method thereof enable a user to use the dry battery for charging the mobile phone directly under the condition that the user is in the open air or can not use a charger to charge the mobile phone immediately, so as to prolong the speaking time or the stand-by time of the mobile phone.

The invention is suitable for the filed of mobile terminals, and provides a multi-card mobile terminal, and control method thereof and a system. The method comprises the following steps of: starting a master control unit; controlling selector switches connected therewith to be switched into each card slot one by one by the master control unit, and reading card identification information in the card slot; according to the card identification information, identifying network corresponding to each card; and controlling the selector switch to connect a communication module corresponding to the network with the corresponding card slot. The card can be arbitrarily slotted, the card phase is detected by powering on without starting other modules other than the master control unit, thus the consumption of the mobile terminal can be saved, the standby and conversation time of the mobile terminal can be prolonged; moreover, the time for switching the card slot of other modules can be saved, the speed of detecting the card can be accelerated, and the user experience can be improved.

The invention discloses a method for automatic call shift of Bluetooth earphone. The method includes: the Bluetooth earphone couples with the gateway, and enters the searching state; in the searching state, the earphone is in call scanning mode, the gateway call the earphone; the gateway create connection to the earphone and assures the quality has enough security, then the earphone and the gateway enter the holding state; in the holding state, if the quality is stable, the gateway registers the mobile phone number fixed network, the ear phone and the gateway enters the on-line state; in the on-line state, when the fixed telephone call the mobile phone, the call is transformed to the gateway, then uses the Bluetooth earphone to receive the call; in the on-line state, the close and connection between the earphone and the gateway or the quality is decreased to the threshold value, the gateway logouts the mobile phone number, the gateway and mobile phone enters the searching state. When the earphone and the gateway have the cal shifting function, the user needn't to bear the interruption and fading of mobile phone signal, the quality is upgraded. The saves the speak time, at the same time; it prolongs the communication and waiting time.

The invention relates to the technical field of conversation time reminding, in particular to an intelligent conversation time reminding method. According to the method, conversation cut-off duration, conversation reminding duration and conversation extension duration are preset; reminding is conducted by reducing conversation voice when a time difference between the conversation time and the conversation cut-off time is less than the conversation reminding duration; and the conversation cut-off duration is extended when a user inputs a time extension signal. Compared with the prior art, the method reminds the user of the conversation time by reducing the conversation voice, so that the conversation content of the user cannot be interfered; the user can input the time extension signal to extend the conversation time under the special conditions such as an urgent conversation, so that a requirement of the urgent conversation of the user is met; the practicability is higher; and the method is accomplished by establishing a function module framework, and controlling a computer system through a computer program instruction.

A multiple power mode amplifier provides a low and a high power mode without using switches. This amplifier may be used in radio frequency (RF) applications such as mobile telephones, pagers, portable digital assistants, and wireless e-mail devices. In the low power mode, the power consumption of the amplifier is reduced, which will increase operation time, especially important for battery-operated devices. In one implementation, the amplifier includes a number of impedance matching network units (130, 140, 150, and 160), impedance transformer (170), and a power stage (120). An implementation provides further power consumption savings by modulating a bias of an amplifier stage.

The invention relates to a method for controlling power for a mobile communications terminal, which comprises a battery with a time-dependent battery voltage and comprises a power amplifier. The invention provides that before the transmission of a signal, the battery voltage is determined by a control and testing unit and is compared to a predetermined upper threshold voltage U nominal*. The signal is transmitted with a predetermined transmit power while creating a voltage dip Delta U1, which is correlated with the predetermined transmit power, when the battery voltage is greater than the upper threshold voltage U nominal*. The signal is transmitted with a reduced transmit power while creating a voltage dip Delta U2, which is correlated with the reduced transmit power, when the battery voltage is less than or equal to the upper threshold voltage U nominal*. The reduced transmit power is selected in such a manner that the battery voltage minus the voltage dip Delta U2, which is correlated with the reduced transmit power, is greater than or equal to a predetermined lower threshold voltage U burst.

The present invention provides a system and method for optimizing power consumption in mobile devices. The system comprises a speech codec encoder module and a speech codec decoder module. The number of CPU / DSP / VLIW processor cycles taken to encode and decode the speech signals are significantly reduced to draw lower current by the mobile device. The significant reduction of processor cycles in the speech codec modules enables reduction of power consumption in the talk time. Thus, the invention provides a simple method of optimizing power consumption by reducing number of processor cycles to compress / decompress speech signal of the speech codec modules in mobile devices.

The invention discloses a method and a device for calculating the complete power consumption of a CDMA mobile phone in real time, comprising the following steps: firstly, obtaining a voltage relative value Vbatt of a battery of the mobile phone; ensuring the voltage Vbatt of the battery of the mobile phone according to the voltage relative value; then, ensuring the output current Ibatt of the battery of the mobile phone according to the state of the mobile phone; and finally, calculating the real-time complete power consumption P=Vbatt*Ibatt of the mobile phone. The technical scheme of the invention realizes the real-time calculation of the complete power consumption of the CDMA mobile phone.

A an apparatus and method for providing a hand held, ergonomic grip removably retaining a portable phone device and sized and shaped to accommodate the distance from the ear to the mouth on a human head. The grip having an ergonomic grip body held in a hand and sized and shaped to accommodate the distance between said ear and said mouth when held in an operating position. An opening within the ergonomic grip body removably retaining the portable phone device therein. An at least one operating control element thereon. An at least one portion of the ergonomic grip body facilitating release of the portable phone device from the ergonomic grip body and an at least one grip element on the ergonomic grip, wherein a user holds the grip element and thereby the grip body the removable retains the portable phone device in the operating position and the ergonomic grip body fits the ergonomic distance from ear to mouth.

The electric energy storage apparatus is composed of the battery group, which contains at least are batteries, and the super caparcitor, which is parallel connected with the battery group. By recharging to the super capacitor with the battery group to make the super capacitor to output the great current in instance, the super capacitor absorbs the great cuttent in instance of the feedback. Thus the apparatus can prevent the instant great current form destroying the inner structure.

The present invention provides a low-power call communication method of a mobile terminal. The method includes the following steps that: when a user performs call communication, the current power value of a local battery is monitored; whether the current power value is lower than a first preset power value is judged; and if the current power value is lower than the first preset power value, communication between the processor and proximity sensor of the mobile terminal is interrupted, so that the processor no longer responds to the proximity sensor and generates a control instruction for controlling the display screen of the mobile terminal to be lit. The invention also provides a mobile terminal. According to the low-power call communication method of the mobile terminal, the current power value of the local battery is monitored in call communication, so that the communication between the processor and the proximity sensor is controlled, and therefore, the display state of the display screen of the mobile terminal can be controlled, and the use state of the battery can be effectively adjusted, and the call communication time of the mobile terminal can be prolonged, and a consumer can perform call communication under a low-power state.

The invention discloses an implementation for a mobile phone having wireless signal remote control and electronic lock functions. Function modules of wireless signal remote control processors with electronic locks are added to mobile phones having various functions, the mobile phones are locked and opened by remote control, other functions are operated and used by remote control, the run and operation of system functions and the use of partial functions are finished separately. When the mobile phones are lost, personal information can be prevented from being used by others. The mobile phones got by illegal ways lost practical use value, thus the occurrence of mobile phones theft is effectively reduced. The remote controllers can be designed to be a more fashionable and personal carrying articles. A large power battery and a super large screen are configured, although the volume is enlarged, the convenient operation of basic functions is not affected. The mobile phones can meet the requirement that parents wants to control the children's use of mobile phones. The implementation can be applied to mobile phones having various functions, and has big market potential; wireless signal remote control and electronic lock functions have an optimistic view.