Abstract: According to an example, a battery is charged using a charge voltage based on a present state of charge of the battery and a present ambient temperature of the battery. Additionally, the charge voltage may be based on the present state of charge of the battery, the present ambient temperature of the battery, and an age of the battery. The charge voltage may be retrieved from a lookup table that includes a plurality of reference charge voltage values at which to charge the battery for different ambient temperatures, different states of charge, or different ages of the battery.

Abstract: According to an example, a battery is charged using a charge voltage based on a present state of charge of the battery and a present ambient temperature of the battery. Additionally, the charge voltage may be based on the present state of charge of the battery, the present ambient temperature of the battery, and an age of the battery. The charge voltage may be retrieved from a lookup table that includes a plurality of reference charge voltage values at which to charge the battery for different ambient temperatures, different states of charge, or different ages of the battery.

Abstract: A touch communications device includes a first touch panel, a touch controller chip and a second storage device. The touch controller chip is capable of executing instructions derived from a firmware to control at least one operation of the first touch panel, wherein the firmware includes a plurality of partial firmwares including at least a first partial firmware and a second partial firmware, and the touch controller chip includes a first storage device capable of storing one of the first partial firmware and the second partial firmware. The second storage device is external to the touch controller chip, wherein the second storage device is capable of storing the other of the first partial firmware and the second partial firmware.

Abstract: A touch communications device includes a first touch panel, a touch controller chip and a second storage device. The touch controller chip is capable of executing instructions derived from a firmware to control at least one operation of the first touch panel, wherein the firmware includes a plurality of partial firmwares including at least a first partial firmware and a second partial firmware, and the touch controller chip includes a first storage device capable of storing one of the first partial firmware and the second partial firmware. The second storage device is external to the touch controller chip, wherein the second storage device is capable of storing the other of the first partial firmware and the second partial firmware.

Abstract: An operating method for an integrated interface of a PDA and a wireless communication system includes the following steps. Firstly, when the wireless communication system starts to operate from a standby mode, a state signal is transmitted from the wireless communication system to the PDA. Then, if the PDA receives the state signal when the PDA is in a sleep state, the PDA is wakened and an input source of an audio element inside the PDA is switched to the wireless communication system. An electromagnetic wave signal is received by a wireless communication element and converted into audio data. Afterwards, the audio data is transmitted from the wireless communication system to the PDA and outputted by the audio element.

Abstract: An electronic device is provided. The electronic device includes a housing and an electro-acoustic transducer disposed on the inner surface of the housing. The electro-acoustic transducer includes an electret diaphragm, a conductive plate and at least one spacer. The electret diaphragm is positioned on the inner surface of the housing and has a film body and an electrode layer. The film body has static charges and the electrode layer is formed on the lower surface of the film body. The conductive plate has a plurality of openings and is stacked on the upper surface of the film body. The spacer is positioned between the electret diaphragm and the conductive plate to keep a predetermined distance therebetween.

Abstract: A twisted structure for a skateboard includes a first board member having a first groove defined therein and extending therearound. A second board member is connected with the first board member. The second board member has a second groove defined therein and extending therearound. An elastic band is stretchably received in the first groove and the second groove. The elastic band encloses the first board member and the second board member for connecting the first board member with the second board member. Accordingly, the first board member is pivotally twisted related to the second board member by the elastic band.

Abstract: A twisted structure for a skateboard includes a first board member having a first groove defined therein and extending therearound. A second board member is connected with the first board member. The second board member has a second groove defined therein and extending therearound. An elastic band is stretchably received in the first groove and the second groove. The elastic band encloses the first board member and the second board member for connecting the first board member with the second board member. Accordingly, the first board member is pivotally twisted related to the second board member by the elastic band.

Abstract: A disposable cup lid of the present invention includes an engaging portion, a hump portion, a lid surface, and a connection opening. The engaging portion is used for engaging with a cup. At least part of the hump portion is formed annularly inside of the engaging portion. The lid surface is connected to the hump portion. The connection opening is defined on the lid surface, and said connection opening is used to communicate with an interior of the cup. The hump portion is adjacent to the hump portion. A top of the hump portion is higher than the connection opening, and a vertical distance from the top of the hump portion to the connection opening is between 4 to 30 millimeters.

Abstract: A battery charging method for a device that has a PDA, a wireless communication system, and a power system having a battery and is charged via an external charging cable. The device further has an external charging circuit for charging the battery. The wireless communication system has an internal charging circuit for charging the battery. The battery charging method includes performing current charging to the battery via the external charging circuit by using the external charging cable; turning on the wireless communication system; and turning on the internal charging circuit for charging after the wireless communication system is turned on.

Abstract: An operating method for an integrated interface of a PDA and a wireless communication system includes the following steps. Firstly, when the wireless communication system starts to operate from a standby mode, a state signal is transmitted from the wireless communication system to the PDA. Then, if the PDA receives the state signal when the PDA is in a sleep state, the PDA is wakened and an input source of an audio element inside the PDA is switched to the wireless communication system. An electromagnetic wave signal is received by a wireless communication element and converted into audio data. Afterwards, the audio data is transmitted from the wireless communication system to the PDA and outputted by the audio element.

Abstract: A circuit for an integrated interface of a PDA and a wireless communication system is suitable for integrating the PDA and the wireless communication system. The circuit includes a first serial port has two terminals, in which one of the two terminals is electrically connected to the PDA, and another one of the two terminals is electrically connected to the wireless communication system. The first serial port is used to bi-directionally transmit a control signal between the PDA and the wireless communication system. A second serial port has two terminals, in which one of the two terminals is electrically connected to the PDA, and another one of the two terminals is electrically connected to the wireless communication system. The second serial port is used to bi-directionally transmit data between the PDA and the wireless communication system.

Abstract: An electronic device is provided. The electronic device includes a housing and an electro-acoustic transducer disposed on the inner surface of the housing. The electro-acoustic transducer includes an electret diaphragm, a conductive plate and at least one spacer. The electret diaphragm is positioned on the inner surface of the housing and has a film body and an electrode layer. The film body has static charges and the electrode layer is formed on the lower surface of the film body. The conductive plate has a plurality of openings and is stacked on the upper surface of the film body. The spacer is positioned between the electret diaphragm and the conductive plate to keep a predetermined distance therebetween.

Abstract: A telescopic assembly of a shoe comprises a sole having a sliding groove at an upper side thereof and an opened groove at one side of the sliding groove; the opened groove being communicated to the sliding groove and being opened at one side of the sole; a head; a lower side of the head being formed with a sliding block; a teeth bank being formed on the sliding block; the sliding block being engageable to the sliding groove of the sole; the sliding block having a teeth bank; and a detachable unit being made of soft and elastic material; one side of the detachable unit being formed with teeth; another end of the detachable unit being formed with a movable unit having a form like a fork.

Abstract: A circuit for an integrated interface of a PDA and a wireless communication system is suitable for integrating the PDA and the wireless communication system. The circuit includes a first serial port has two terminals, in which one of the two terminals is electrically connected to the PDA, and another one of the two terminals is electrically connected to the wireless communication system. The first serial port is used to bi-directionally transmit a control signal between the PDA and the wireless communication system. A second serial port has two terminals, in which one of the two terminals is electrically connected to the PDA, and another one of the two terminals is electrically connected to the wireless communication system. The second serial port is used to bi-directionally transmit data between the PDA and the wireless communication system.

Abstract: A battery charging method for a device that has a PDA, a wireless communication system, and a power system having a battery and is charged via an external charging cable. The device further has an external charging circuit for charging the battery. The wireless communication system has an internal charging circuit for charging the battery. The battery charging method includes performing current charging to the battery via the external charging circuit by using the external charging cable; turning on the wireless communication system; and turning on the internal charging circuit for charging after the wireless communication system is turned on.

Abstract: A circuit and operating method for an integrated interface of a PDA and a wireless communication system are disclosed. The circuit includes a PDA-turn-on-wireless-communication-system signal line, a PDA-reset-wireless-communication-system signal line, a PDA-state signal line, a wireless-communication-system-state/wake-up-PDA signal line and two serial ports, wherein the serial ports are electrically connected between the PDA and the wireless communication system, and one of the two ports is used to transmit control signal and status data, another one of the two ports is used to transmit digital data signals. Moreover, the PDA-turn-on-wireless-communication-system signal line and the PDA-reset-wireless-communication-system signal line makes the PDA able to turn on and reset the wireless communication system, respectively. The PDA-state signal line and the wireless-communication-system-state/wake-up-PDA signal line transmit the status of the PDA and wireless communication system to each other.

Abstract: One embodiment of a system includes a sophisticated volume hologram for dispersing an incident optical signal with uniform spectrum over an input plane to an output pattern with non-uniform spatial-spectral information, where the sophisticated volume hologram includes a plurality of holograms that map different input wavelengths into a diverse spatial pattern. The system further includes a detector for receiving and detecting light dispersed by the sophisticated volume hologram. Other systems and methods are also provided.

Abstract: One embodiment of a lens-less system for analyzing an optical spectrum includes a sophisticated volume hologram for separating an incident diffuse optical signal into wavelength channels without aid of an external collector lens and a detector for receiving and detecting light dispersed by the sophisticated volume hologram. Other systems and methods are also provided.