Shao-Chang
Shao-Chang Chang, Hsinchu Country TW
Patent application number | Description | Published |
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20100277249 | CARRIER GENERATOR - A carrier generator for generating a carrier at a frequency of interest in a wireless communications system. The carrier generator comprises a first oscillator configured to generate the carrier. The first oscillator exhibits a first impedance and comprises an energy storage tank, an amplifier, at least one trimming pin and at least one capacitor. The energy storage tank is configured to generate a first periodic signal. The energy storage tank includes at least one inductor and at least one capacitor. The amplifier coupled with the energy storage tank and is configured to amplify an amplitude of the first periodic signal. The at least one trimming pin is configured to adjust the at least one capacitor of the energy storage tank, and the at least one modulation pin is configured to receive a modulation signal. The carrier generator further comprises an antenna exhibiting a second impedance smaller than the first impedance, and a network coupled between the first oscillator and the antenna. The network includes at least one inductor or at least one capacitor and being configured to provide a third impedance such that a resultant impedance of the second impedance and the third impedance as viewed from the first oscillator toward the antenna is large enough to facilitate the first oscillator to generate the carrier at the frequency of interest. | 11-04-2010 |
Shao-Chang Chang, Chu-Pei City TW
Patent application number | Description | Published |
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20140253360 | LOW POWER TRANSMITTER FOR REMOTE CONTROL - A transmitter for remote control includes a first analog-to-digital converter (ADC) to receive a first audio signal from a electronic device and convert the first audio signal to a first direct-current (DC) signal, a first boost circuit connected to the first ADC to receive and amplify the first DC signal, a second ADC receives a second audio signal from the electronic device and converts the second audio signal to a second DC signal, a second boost circuit connected to the second ADC to receive and amplify the second DC signal, an energy storage element and a transmission module is powered by the energy storage element and generates a carrier signal, the transmission module receives the amplified first DC signal from the first boost circuit, the amplified first DC signal modulates the carrier signal generated by the transmission module, and the amplified second DC signal charges the energy storage element. | 09-11-2014 |
20140254326 | LOW-POWER AND BATTERY-FREE TRANSMITTER FOR REMOTE CONTROL - A transmitter for remote control, the transmitter includes a first analog-to-digital converter (ADC) configured to receive a first audio signal from a electronic device and convert the first audio signal to a first direct-current (DC) signal, a first boost circuit electrically connected to the first ADC to receive and amplify the first DC signal, and a transmission module electrically connected to the first boost circuit to receive the amplified first DC signal, wherein the amplified first DC signal is configured to modulate a carrier signal generated by the transmission module and the first audio signal is one of a left channel audio signal and a right channel audio signal output from the electronic device through an audio connector. | 09-11-2014 |
20140254803 | RFID TRANSCEIVER FOR REMOTE CONTROL - A transceiver for remote control, the transceiver includes an amplifier configured to receive an audio signal from a first electronic device and amplify the audio signal; a transmission module electrically connected to the amplifier to receive the amplified audio signal and generating a first carrier signal; a power supply connected to the transmission module; and a receiver module connected to the first electronic device and the power supply, wherein the amplified audio signal is configured to modulate the first carrier signal generated by the transmission module, and the audio signal is one of a left channel audio signal and a right channel audio signal from the first electronic device. | 09-11-2014 |
Shao-Chang Chang, Chu-Pei City, Hsin-Chu County TW
Patent application number | Description | Published |
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20140254327 | RFID TRANSMITTER FOR REMOTE CONTROL - A transmitter for remote control, the transmitter includes an amplifier configured to receive a first audio signal from an electronic device and amplify the first audio signal, a transmission module electrically connected to the amplifier to receive the amplified first audio signal and generating a carrier signal, a power supply connected to the transmission module, and an attenuation circuit electrically connected to the transmission module to receive the carrier signal, wherein the amplified first audio signal is configured to modulate the carrier signal and the first audio signal is one of a left channel audio signal and a right channel audio signal output from the electronic device via an audio connector. | 09-11-2014 |
Shao-Chang Tu, Kuei San TW
Patent application number | Description | Published |
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20150275906 | THIN FAN, ELECTRONIC SYSTEM AND MANUFACTURING METHOD OF THIN FAN - A manufacturing method of the thin fan includes the steps of: providing a plastic material containing a plurality of metal particles; processing the plastic material to form a housing; removing a part surface of the housing and forming a layout area and an extended circuit on the housing, wherein one terminal of the extended circuit connects to the layout area; disposing a first signal connecting structure on the housing, wherein the first signal connecting structure connects to the other terminal of the extended circuit; and disposing a metal layer on the layout area and the extended circuit. | 10-01-2015 |