Abstract: The present invention provides a transceiver for a radio frequency identification (RFID) reader. The transceiver includes an RF front end, a transmitting component, a receiving component, a power divider and a micro control unit (MCU). The power divider has three terminals. The first terminal of the power divider is connected to the transmitting component. The second terminal of the power divider is connected to the receiving component. The third terminal is connected to the RF front end. Moreover, the MCU is connected to the transmitting component and the receiving component, and generates a transmitted signal and receives a retrieved data. According to the present invention, the transceiver further includes an RF switch, a matching circuit and a receiving circuit.

Abstract: A transmitter in an RFID system, the transmitter includes a signal generator which has a PIN diode and generates a first signal, a directional unit connected to a cathode of the PIN diode; and an antenna connected to the directional unit, wherein the signal generator has a first terminal configured to receive a first control signal to control a frequency band of the first signal and a second terminal configured to receive a second control signal to control a modulation depth of the first signal.

Abstract: 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.

Abstract: 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.

Abstract: An RFID reader comprises a memory having a first data for identifying the reader and a second data associated with the first data stored therein; a communication interface; and a microcontroller unit. The microcontroller unit is configured to transmit the first data via the communication interface; receive a first request for transmitting the second data; transmit the second data via the communication interface; receive a third data via the communication interface; overwrite the second data stored in the memory with third data.

Abstract: 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.

Abstract: A modulator which has a first terminal to receive a carrier signal, a second terminal to receive a first control signal to control a frequency band of the carrier signal and a third terminal to receive a second control signal to control a modulation depth of the carrier signal.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A receiver of an object finder includes an antenna to receive a signal from a transmitter associated with the receiver, a PIN diode having a first terminal coupled with the antenna, and having a resistance that increases as a current flows therethrough decreases, and vice versa, a variable resistor coupled with the first terminal of the PIN diode to control the amount of a current flowing into the PIN diode, and a radio frequency integrated circuit (RF IC) having a first pin electrically coupled with second terminal of the PIN diode to receive the signal from the antenna via the PIN diode.

Abstract: A device that comprises at least one image sensor and a processing unit. The at least one image sensor is configured to consecutively capture a plurality of images at a predetermined rate. The processing unit is configured to identify in each of the plurality of images a first region and a second region, wherein intensities of the first region and the second region are different; determine a displacement of the first region from the first image of the plurality of images to the last image of the plurality of images; and output a first signal comprising the displacement.

Abstract: A transmitter in an RFID system, the transmitter includes a signal generator which has a PIN diode and generates a first signal, a directional unit connected to a cathode of the PIN diode; and an antenna connected to the directional unit, wherein the signal generator has a first terminal configured to receive a first control signal to control a frequency band of the first signal and a second terminal configured to receive a second control signal to control a modulation depth of the first signal.

Abstract: An RFID reader comprises a memory having a first data for identifying the reader and a second data associated with the first data stored therein; a communication interface; and a microcontroller unit. The microcontroller unit is configured to transmit the first data via the communication interface; receive a first request for transmitting the second data; transmit the second data via the communication interface; receive a third data via the communication interface; overwrite the second data stored in the memory with third data.

Abstract: A modulator which has a first terminal to receive a carrier signal, a second terminal to receive a first control signal to control a frequency band of the carrier signal and a third terminal to receive a second control signal to control a modulation depth of the carrier signal.

Abstract: A carrier generator for generating a carrier at a frequency of interest in a wireless communications system comprises an oscillator exhibiting a first impedance, the oscillator comprising an energy storage tank configured to generate a periodic signal, the energy storage tank including at least one inductor and at least one capacitor, and an amplifier coupled with the energy storage tank, the amplifier being configured to amplify an amplitude of the periodic signal, an antenna exhibiting a second impedance smaller than the first impedance, and a network coupled between the oscillator and the antenna, the network including 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 oscillator toward the antenna is large enough to facilitate the oscillator to generate the carrier at the frequency of interest.

Abstract: A carrier generator for generating a carrier at a frequency of interest in a wireless communications system comprises an oscillator exhibiting a first impedance, the oscillator comprising an energy storage tank configured to generate a periodic signal, the energy storage tank including at least one inductor and at least one capacitor, and an amplifier coupled with the energy storage tank, the amplifier being configured to amplify an amplitude of the periodic signal, an antenna exhibiting a second impedance smaller than the first impedance, and a network coupled between the oscillator and the antenna, the network including 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 oscillator toward the antenna is large enough to facilitate the oscillator to generate the carrier at the frequency of interest.

Abstract: A control device capable of controlling an electronic device via wireless communications, the control device comprising a first antenna capable of receiving a radio frequency (RF) carrier at a first frequency, a power generation circuit capable of converting RF power of the RF carrier into direct-current (DC) power, a plurality of input devices configured to allow adjustment of a number of settings of the electronic device, each of the input devices being related to one of the number of settings, a memory device configured to store a number of codes, each of the number of codes being related to one of the number of settings, a control unit configured to receive the DC power and capable of retrieving one of the number of codes in the memory device based on a selection of at least one of the input devices, and a modulator capable of modulating the one code at the first frequency.