Abstract: A capacitance detection apparatus for a touch panel includes an N number of capacitors. The detection apparatus generates an N number of different input signals, and provides an ith input signal of the input signals to an ith capacitor. The N number of input signals correspond to a delayed sequence of a maximum length sequence or the maximum length sequence. The detection apparatus sums up an N number of response signals, which are generated after providing the N number of input signals to the N number of capacitors, to generate a summed signal. The summed signal is multiplied by the ith input signal and integrated to generate an ith integrated signal. The detection apparatus estimates capacitance values of the N number of capacitors according to the N number of integrated signals, respectively.

Abstract: A receiving apparatus applied to a receiving end of a communication device having an equalizer is provided. The receiving apparatus includes a filter and a channel estimator. The filter filters a received signal to reduce a multipath effect of the received signal and outputs a filtered signal. The channel estimator performs channel estimation on the received signal to generate an estimation result. The estimation result is for determining which of the received signal and the filtered signal is to be selected and sent to the equalizer.

Abstract: A method for calculating an error of a sampling clock is provided. The sampling clock is used for sampling a signal to generate a first sample data group and a second sample data group. Each of the first and second sample data groups includes a header having a predetermined sequence. The method includes: performing a correlation operation on the first and second sample data groups with data of the predetermined format to obtain first and second correlation results, respectively; comparing the first and second correlation results to generate a sample data group offset; and generating the error of the sampling clock according to the sample data group offset and a time difference between the first and second sample data groups.

Abstract: A receiving apparatus applied to a receiving end of a communication device having an equalizer is provided. The receiving apparatus includes a filter and a channel estimator. The filter filters a received signal to reduce a multipath effect of the received signal and outputs a filtered signal. The channel estimator performs channel estimation on the received signal to generate an estimation result. The estimation result is for determining which of the received signal and the filtered signal is to be selected and sent to the equalizer.

Abstract: A capacitance detection apparatus for a touch panel includes an N number of capacitors. The detection apparatus generates an N number of different input signals, and provides an ith input signal of the input signals to an ith capacitor. The N number of input signals correspond to a delayed sequence of a maximum length sequence or the maximum length sequence. The detection apparatus sums up an N number of response signals, which are generated after providing the N number of input signals to the N number of capacitors, to generate a summed signal. The summed signal is multiplied by the ith input signal and integrated to generate an ith integrated signal. The detection apparatus estimates capacitance values of the N number of capacitors according to the N number of integrated signals, respectively.

Abstract: An analog television (TV) signal receiving circuit and method and an associated equalizer coefficient configuration apparatus and method are disclosed for correcting a distortion problem occurred in a reception process of an analog TV signal by configuring an equalizer in the analog TV signal receiving circuit. The analog TV signal receiving TV includes a tuner, an analog-to-digital converter (ADC), and a demodulator. The tuner receives an analog radio-frequency (RF) TV signal to generate an analog frequency down conversion signal. The ADC generates a digital frequency down conversion signal according to the analog frequency down conversion signal. The demodulator includes a front-end circuit for generating a digital demodulated signal according to the digital frequency down conversion signal, and an equalizer for generating a digital receiving signal according to the digital demodulated signal. The equalizer includes a plurality of correction coefficients that are generated according to a predetermined rule.

Abstract: An apparatus for calibrating an audio-visual (AV) signal includes a controller for generating a control signal, a controllable filter for selectively filtering the AV signal in response to the control signal to output either the AV signal or a filtered AV signal; and a calibrator for generating a group of calibrating coefficients according to the filtered AV signal and calibrating the AV signal according to the group of calibrating coefficients.

Abstract: An apparatus for calibrating an audio-visual (AV) signal includes a controller for generating a control signal, a controllable filter for selectively filtering the AV signal in response to the control signal to output either the AV signal or a filtered AV signal; and a calibrator for generating a group of calibrating coefficients according to the filtered AV signal and calibrating the AV signal according to the group of calibrating coefficients.

Abstract: An analog television (TV) signal receiving circuit and method and an associated equalizer coefficient configuration apparatus and method are disclosed for correcting a distortion problem occurred in a reception process of an analog TV signal by configuring an equalizer in the analog TV signal receiving circuit. The analog TV signal receiving TV includes a tuner, an analog-to-digital converter (ADC), and a demodulator. The tuner receives an analog radio-frequency (RF) TV signal to generate an analog frequency down conversion signal. The ADC generates a digital frequency down conversion signal according to the analog frequency down conversion signal. The demodulator includes a front-end circuit for generating a digital demodulated signal according to the digital frequency down conversion signal, and an equalizer for generating a digital receiving signal according to the digital demodulated signal. The equalizer includes a plurality of correction coefficients that are generated according to a predetermined rule.

Abstract: A multi-band has as an elongated grounding plate disposed vertically with a top edge defined thereon. A simulation induction portion includes a first conduction strip extended obliquely from a substantial middle of the top edge and a second conduction strip extended along the top edge from a free end of the first conduction strip to form an obtuse angle between the first and second conduction strips. A connecting portion extends perpendicularly and opposite to the grounding plate from a free end of the second conduction strip. A feeding point disposes on the connecting portion, adjacent to the second conduction strip. A high frequency radiator and a low frequency radiator are extended opposite to each other from a free end of the connecting portion.

Abstract: A multi-band antenna includes a ground portion, a radiating element spaced from the ground portion, a tuning conductor extending from the radiating element and parallel to the ground portion to form a gap therebetween, a short-circuit conductor interconnecting the ground portion and the radiating element, and a feed point disposed at the radiating element and adjacent to the short-circuit conductor. The radiating element, the short-circuit conductor and the feed point function as a first inverted-F antenna obtaining a first high frequency band, and a second inverted-F antenna obtaining a low frequency band and a second high frequency band higher than the first high frequency band. The ground portion and the tuning conductor cause a capacitance effect to shift the second high frequency band to be close to the first high frequency band. It can cover various wireless communication frequency bands.

Abstract: A dual-band antenna has a feeding portion including a first feeding portion and a second feeding portion extending perpendicularly from a top of the first feeding portion. A first high-frequency portion spaced away from the second feeding portion extends upwards from the first feeding portion, and a second high-frequency portion extends perpendicularly from the first high-frequency portion and located at a same side with respect to the first feeding portion as the second feeding portion. A first low-frequency portion located at a same side with respect to the first feeding portion as the second high-frequency portion extends perpendicularly from an end of the first feeding portion. A second low-frequency portion extends upwards from the first low-frequency portion. A third low-frequency portion extends back to the first low-frequency portion from the second low-frequency portion. A grounding portion connected with the feeding portion by a connecting portion faces the low-frequency radiator.

Abstract: A multi-band antenna has a ground portion, a first radiating portion defining opposite first and second ends, a L-shaped radiating portion connected to the second end of the first radiating portion and defining a third end extending towards the ground portion and a fourth end extending towards a direction, a stair-shaped radiating portion located between the ground portion and the L-shaped radiating portion and defining a fifth end connected to the first end of the first radiating portion and a sixth end extending towards the direction, and having at least one bent section, which has at least one bent section, a connecting portion interconnecting the bent section of the fourth radiating portion and the ground portion, and a feeding point arranged at the first end of the first radiating portion.

Abstract: A multi-band has as an elongated grounding plate disposed vertically with a top edge defined thereon. A simulation induction portion includes a first conduction strip extended obliquely from a substantial middle of the top edge and a second conduction strip extended along the top edge from a free end of the first conduction strip to form an obtuse angle between the first and second conduction strips. A connecting portion extends perpendicularly and opposite to the grounding plate from a free end of the second conduction strip. A feeding point disposes on the connecting portion, adjacent to the second conduction strip. A high frequency radiator and a low frequency radiator are extended opposite to each other from a free end of the connecting portion.

Abstract: A multi-band antenna includes a base plate having two opposite transverse edges and two opposite longitudinal edges respectively connected to the two transverse edges. A high frequency radiating element and a capacitance element are respectively bent downward from the two transverse edges of the base plate and then extend in a transverse direction. A feeding point is defined at one end of the capacitance element adjacent to the base plate. A low frequency radiating element extends from one longitudinal edge of the base plate. An inductance element extends from the other longitudinal edge of the base plate and has a transverse border exceeding the base plate in a longitudinal direction. A grounding element is bent downward from the transverse border of the inductance element and then extends in the same direction as the high frequency radiating element to be spaced from the capacitance element.

Abstract: An antenna apparatus includes a housing defining a plurality of walls and a plurality of included angle spaces between the walls. An inner surface of one of the walls is configured a telecommunication antenna. One of the included angle spaces opposite to the wall on which the telecommunication antenna is configured a global positioning system antenna. A broadcast receiving antenna positions in the housing and between the telecommunication antenna and the global positioning system antenna. Because the telecommunication antenna and the global positioning system antenna position away from each other, the interference therebetween will be reduced.

Abstract: A multi-band antenna includes a ground portion, a radiating element spaced from the ground portion, a tuning conductor extending from the radiating element and parallel to the ground portion to form a gap therebetween, a short-circuit conductor interconnecting the ground portion and the radiating element, and a feed point disposed at the radiating element and adjacent to the short-circuit conductor. The radiating element, the short-circuit conductor and the feed point function as a first inverted-F antenna obtaining a first high frequency band, and a second inverted-F antenna obtaining a low frequency band and a second high frequency band higher than the first high frequency band. The ground portion and the tuning conductor cause a capacitance effect to shift the second high frequency band to be close to the first high frequency band. It can cover various wireless communication frequency bands.

Abstract: A multi-band antenna has a grounding plate, a radiating element and a parasitic element. The radiating element has a level radiating portion disposed a predetermined distance away from the grounding plate and a first connecting portion connecting the level radiating portion with the grounding plate. The parasitic element has a substantially L-shaped parasitic portion away from the grounding plate and a second connecting portion disposed at the same side of the grounding plate with the first connecting portion to connect a free end of the L-shaped parasitic portion with the grounding plate. The L-shaped parasitic portion is substantially at the same plane with and spatially fences the level radiating portion to define a substantially L-shaped space. The multi-band antenna has simple structure and small size to be assembled in the limited space of notebook.

Abstract: A dual-band antenna has a feeding portion including a first feeding portion and a second feeding portion extending perpendicularly from a top of the first feeding portion. A first high-frequency portion spaced away from the second feeding portion extends upwards from the first feeding portion, and a second high-frequency portion extends perpendicularly from the first high-frequency portion and located at a same side with respect to the first feeding portion as the second feeding portion. A first low-frequency portion located at a same side with respect to the first feeding portion as the second high-frequency portion extends perpendicularly from an end of the first feeding portion. A second low-frequency portion extends upwards from the first low-frequency portion. A third low-frequency portion extends back to the first low-frequency portion from the second low-frequency portion. A grounding portion connected with the feeding portion by a connecting portion faces the low-frequency radiator.

Abstract: A multi-band antenna includes a feed-in element having a feed-in point thereon. A first connecting portion extends from one side of the feed-in element. A ground element connects to a side of the first connecting portion and is parallel to the feed-in element. A holding portion perpendicularly extends from a side of the ground element opposite the first connecting portion. A second connecting portion perpendicularly bends and extends from a side of the feed-in element opposite the first connecting portion. A first radiating portion extends from one side of the second connecting portion. A second radiating portion extends from the other side of the second connecting portion opposite the first radiating portion. The first radiating portion and part of the second radiating portion are disposed at one side of the holding portion. The rest part of the second radiating portion is disposed at the other side of the holding portion.