Abstract: A Bluetooth communication system includes: a transmitting-end Bluetooth device arranged to operably insert an auto-pairing request and a source Bluetooth device address into one or more target packets when the transmitting-end Bluetooth device wants to initiate a Bluetooth auto-pairing procedure, and arranged to operably transmit the one or more target packets when operating under a transmitting-end predetermined operating mode; and a receiving-end Bluetooth device arranged to operably receive the one or more target packets when operating under a receiving-end predetermined operating mode, and to parse the one or more target packets to extract the auto-pairing request and the source Bluetooth device address from the one or more target packets. Then, the receiving-end Bluetooth device is enabled to conduct a Bluetooth auto-pairing procedure with the transmitting-end Bluetooth device according to the auto-pairing request and the source Bluetooth device address.

Abstract: A 3D electromagnetic bandgap circuit includes: a dielectric layer having a first surface and an opposing second surface; a spiral element positioned on the first surface; a first surrounding element positioned on the first surface and surrounding the spiral element, but does not touch with the spiral element; a plane element positioned on the second surface and including a notch; a second surrounding element positioned on the second surface and surrounding the plane element, but does not touch with the plane element, wherein the second surrounding element further includes a protruding portion extending toward the notch; a first via passing through the dielectric layer, the spiral element, and the protruding portion; a second via passing through the dielectric layer, the plane element, and the first surrounding element; and a third via passing through the dielectric layer, the plane element, and the first surrounding element.

Abstract: A transceiver circuit including: a substrate; a signal coupler configured on the substrate and including a coiled first conductive layer pattern; and a notch filter configured on the substrate and including a coiled second conductive layer pattern; wherein each of the first conductive layer pattern and the second conductive layer pattern is arranged as a substantially symmetrical pattern with respect to a first virtual axis.

Abstract: A method including operations of receiving an input clock at an input node, coupling the input node to a first internal node using a first capacitor, inverting a first internal signal at the first internal node into a first interim signal at a first interim node using a first inverter, coupling the first interim node to the first internal node using a first resistor, coupling the input node to a second internal node using a second resistor, inverting a second internal signal at the second internal node into a second interim signal at a second interim node using a second inverter, coupling the second interim node to the second internal node using a second capacitor, and using a buffer to receive the first interim signal and the second interim signal and output a first phase and a second phase of an output clock.

Abstract: An ESD protection circuit includes: a first current path switch arranged in a parallel connection with a first circuit and turned off when a first node voltage is at a logic low level; a first node for providing the first node voltage; a resister element coupled between a first power terminal and the first node; a MOS capacitor coupled between the first node and a first fixed-voltage terminal; a second current path switch arranged in a parallel connection with a second circuit and controlled by a second node voltage; a switch control circuit for providing the second node voltage; and a node voltage control circuit for controlling the first node voltage according to the second node voltage to ensure the first current path switch is turned off when the first power terminal supplies power to the first circuit while the second power terminal supplies power to the second circuit.

Abstract: A receiving device comprises an iterative decoder, a first determination unit and a control unit. The iterative decoder is for receiving at least one coded signal and for performing an iterative decoding on the at least one coded signal, to generate a plurality of decoded signals, wherein the plurality of decoded signals comprise a first decoded signal from a first iteration, a second decoded signal from a second iteration and a third decoded signal from a third iteration. The first determination unit is for determining whether the plurality of decoded signals diverge, to generate a first determination result. The control unit is for generating a control signal according to at least the first determination result, wherein the control signal indicates the iterative decoder whether to stop performing the iterative decoding on the at least one coded signal.

Abstract: This invention discloses an active load generation circuit and a filter. The active load generation circuit includes a transistor, a voltage control circuit, a voltage offset and tracking circuit, and a temperature sensing circuit. The transistor provides an impedance and includes a control terminal and an input terminal. The control terminal receives a control voltage, the input terminal receives an input signal, and the impedance is associated with the control voltage. The voltage control circuit generates an intermediate voltage according to a power supply voltage and a first reference voltage. The voltage offset and tracking circuit generates the control voltage according to the input signal and the intermediate voltage such that the control voltage varies with the input signal. The temperature sensing circuit senses an ambient temperature of the active load generation circuit and adjusts the first reference voltage according to the ambient temperature.

Abstract: A wireless device includes a radio-frequency module, a modem module, and a control unit. The radio-frequency module and the modem module operate either in a first operation mode or in a second operation mode. The control unit, coupled to the RF and the modem module, generates a control signal to indicate to the RF and the modem module to operate in the first operation mode or to operate in the second operation mode. A first set of signal formats corresponding to the first operation mode is a superset of a second set of signal formats corresponding to the second operation mode, and a first power consumption corresponding to the first operation mode is higher than a second power consumption corresponding to the second operation mode.

Abstract: A detection circuit of an electronic device includes a resistance detecting circuit and a voltage supplying circuit, wherein the detecting circuit is coupled to an input circuit which is coupled to the electronic device and comprises a plurality of resistors respectively coupled to a plurality of switches, wherein the resistance detecting circuit is arranged to detect whether the input circuit has a resistance variation and generate a detecting signal indicative of the resistance variation; and the voltage supplying circuit is coupled to the resistance detecting circuit to supply a first voltage signal, wherein the voltage supplying circuit receives the detecting signal, and selectively switches the first voltage signal to a second voltage signal according to the detecting signal; wherein the resistance detecting circuit determines whether at least one of the plurality of switches is closed according to the second voltage signal.

Abstract: A laser diode control circuit includes: a LD driver circuit for driving a laser diode; a direct current component remover circuit for generating a feedback signal based on a detected signal; a first conversion and filter circuit for generating a first filtered signal based on the feedback signal; a first rectifier for rectifying the first filtered signal to generate a first rectified signal; a reference signal generator for generating a reference signal; a second conversion and filter circuit for generating a second filtered signal based on the reference signal; a second rectifier for rectifying the second filtered signal to generate a second rectified signal; a rectified signals processing circuit for generating a processed signal based on the first and second rectified signals; and a comparator for generating a comparison signal based on the processed signal.

Abstract: A multi-member Bluetooth device includes: a main Bluetooth circuit capable of directly communicating with a remote Bluetooth device through a Bluetooth transmission approach; and an auxiliary Bluetooth circuit capable of indirectly communicating with the remote Bluetooth device through the main Bluetooth circuit. After operating for a certain period, the main Bluetooth circuit transmits the main Bluetooth circuit's device identification data and multiple Bluetooth connection parameters between the main Bluetooth circuit and the remote Bluetooth device to the auxiliary Bluetooth circuit.

Abstract: A main Bluetooth circuit of a multi-member Bluetooth device includes: a Bluetooth communication circuit; a data transmission circuit; and a control circuit arranged to operably conduct bidirectional packet transmission with a remote Bluetooth device through the Bluetooth communication circuit by utilizing a Bluetooth wireless transmission approach, and arranged to operably communicate data with other devices through the data transmission circuit. During the period in which the Bluetooth communication circuit conducts packet transmission with the remote Bluetooth device, an auxiliary Bluetooth circuit of the multi-member Bluetooth device sniffs packets transmitted from the remote Bluetooth device.

Abstract: A multi-member Bluetooth device includes: a main Bluetooth circuit capable of bidirectionally communicating with a remote Bluetooth device through a first Bluetooth communication circuit; and an auxiliary Bluetooth circuit capable of communicating with the main Bluetooth circuit through a data transmission circuit. While the main Bluetooth circuit utilizes the first Bluetooth communication circuit to communicate with the remote Bluetooth device, the auxiliary Bluetooth circuit utilizes a second Bluetooth communication circuit to sniff packets transmitted from the remote Bluetooth device. When detected that the auxiliary Bluetooth circuit has missed packets transmitted from the remote Bluetooth device, the main Bluetooth circuit transmits missing packets of the auxiliary Bluetooth circuit to the auxiliary Bluetooth circuit through the data transmission circuit.

Abstract: A multi-member Bluetooth network includes: a main Bluetooth circuit capable of directly communicating with a remote Bluetooth device through a Bluetooth transmission approach; and an auxiliary Bluetooth circuit capable of indirectly communicating with the remote Bluetooth device through the main Bluetooth circuit. When the auxiliary Bluetooth circuit becomes more closer to the remote Bluetooth device than the main Bluetooth circuit, the main Bluetooth circuit instructs the auxiliary Bluetooth circuit to utilize the device identification data and multiple Bluetooth connection parameters of the main Bluetooth circuit to directly communicate with the remote Bluetooth device through a Bluetooth transmission approach by imitating the main Bluetooth circuit, and the main Bluetooth circuit then indirectly communicates with the remote Bluetooth device through the auxiliary Bluetooth circuit.

Abstract: A auxiliary Bluetooth circuit of a multi-member Bluetooth device includes: a Bluetooth communication circuit; a data transmission circuit; and a control circuit arranged to operably control the data transmission circuit to communicate data with a main Bluetooth circuit of the multi-member Bluetooth device, and arranged to utilize the Bluetooth communication circuit to sniff packets transmitted from the remote Bluetooth device during the period in which the main Bluetooth circuit conducts packet transmission with the remote Bluetooth device. When the auxiliary Bluetooth circuit missed packets transmitted from the remote Bluetooth device, the data transmission circuit is further arranged to operably receive the missed packets from the main Bluetooth circuit.

Abstract: An apparatus includes a first common-source amplifier having a first PMOS (p-channel metal oxide semiconductor) transistor configured to receive a first voltage and output a first current; a second common-source amplifier having a first NMOS (n-channel metal oxide semiconductor) transistor configured to receive a second voltage and output a second current, wherein the first common-source amplifier and the second common-source amplifier share a common source node, and an AC (alternating current) component of the first voltage is an inversion of an AC component of the second voltage; a first common-gate amplifier having a second PMOS transistor configured to receive the first current and output a third current; a second common-gate amplifier having a second NMOS transistor configured to receive the second current and output a fourth current; and a load configured to terminate the third current and the fourth current.

Abstract: A semiconductor package structure is disclosed. The semiconductor package structure comprises a plurality of layered structures, a plurality of wires, and a first ring structure. The wires are connected to each of the layered structures. The first ring structure is coupled to at least one of the layered structures and positioned between the wires.

Abstract: An audio codec circuit includes: an audio processing circuit; an output driver circuit for generating an analog output signal based on the output of the audio processing circuit; an analog signal pin for outputting the analog output signal to an active amplifier; a multifunction signal pin for providing different signal transmission functionalities according to the configuration of the audio processing circuit; at least one de-pop switch arranged between the analog signal pin and a first fixed-voltage terminal or between the multifunction signal pin and a second fixed-voltage terminal; and a de-pop switch control circuit, coupled with the audio processing circuit and the at least one de-pop switch, arranged to operably control the at least one de-pop switch based on the instruction from the audio processing circuit.

Abstract: An Ethernet communication circuit includes: an Ethernet cable connector for communicating data with other devices through an Ethernet cable; an Ethernet transformer coupled with the Ethernet cable connector and arranged to operably process signals transmitted from the Ethernet cable connector; an Ethernet physical layer circuit coupled with the Ethernet transformer and arranged to operably conduct physical layer operations on the signals transmitted from the Ethernet transformer; and a plurality of coupling capacitors respectively arranged between a portion of signal pins of the Ethernet physical layer circuit and the Ethernet transformer.

Abstract: An ESD protection circuit includes: a first current path switch arranged in a parallel connection with a first circuit and turned off when a first node voltage is at a logic high level; a first node for providing the first node voltage; a resister element coupled between a first power terminal and the first node; a MOS capacitor coupled between the first node and a first fixed-voltage terminal; a second current path switch arranged in a parallel connection with a second circuit and controlled by a second node voltage; a switch control circuit for providing the second node voltage; and a node voltage control circuit for controlling the first node voltage according to the second node voltage to ensure the first current path switch is turned off when the first power terminal supplies power to the first circuit while the second power terminal supplies power to the second circuit.