EGALAX_EMPIA TECHNOLOGY INC.

A touch sensitive processing method, comprising: receiving a synchronization signal corresponding to a frame of a touch screen; calculating multiple gate driving signal interference periods of the touch screen according to the synchronization signal; performing a mutual capacitance sensing during one of the gate driving signal interference periods to generate a first sensing image; calculating one or more first positions where one or more external conductive objects approaching or touching the touch screen based on a difference image between the first sensing image and a baseline interference image; and reporting the one or more first positions to a host.

A method for determining whether a touch panel is applicable to a firmware is provided. The method comprising: obtaining a first signal value of a RC circuit corresponding to a reference point on a touch panel by a touch sensitive processing apparatus using mutual capacitance sensing; deploying a test conductive object to the reference point and obtaining a second signal value of the RC circuit by the touch sensitive processing apparatus, wherein the test conductive object and the touch sensitive processing apparatus share a common reference voltage; calculating a test variance ratio according to the first and the second signal values; and determining whether the touch panel is applicable to a range of touch sensing parameters supported by a firmware of the touch sensitive processing apparatus according to the test variation value and a first reference value.

A touch panel sequentially comprising: a first electrode layer, an elastic dielectric layer, and a second structure, the first electrode layer comprises one or more first electrodes in parallel to a first axis, the second structure comprises multiple second circuits in parallel to a second axis, multiple third circuits in parallel to the first axis, multiple second electrodes, and multiple switch circuits, wherein each of the switch circuits connects one of the second electrodes and one of the second circuits, respectively, wherein each of the switch circuits is configured to connect or disconnect the one of the second electrodes and the one of the second circuits according to signals transmitted from one of the third circuits, wherein each of the first electrodes covers at least one of the third circuits, the switch circuits configured by the at least covered one of the third circuits, and the second electrodes corresponding to the switch circuits.

A touch panel sequentially comprising: a first electrode layer, which comprises multiple first electrodes in parallel to a first axis; an elastic dielectric layer; and a second structure, which further comprises: multiple second circuits in parallel to the first axis; multiple third circuits in parallel to a second axis; multiple second electrodes; and multiple switch circuits, wherein that each of the switch circuits is coupled to one of the second electrodes and one of the second circuits, wherein that each of the switch circuits is configured to be selectively closed or opened according to signals transmitted from one of the third circuits, wherein each of the first electrodes covers on top of one of the second circuits and the switch circuits and the second electrodes which are coupled to the one of the second circuits.

The present application is related to active stylus which can detect beacon signals via its head and tail and is also related to touch sensitive processing apparatus and touch system corresponding to the active stylus. According to received signals during a head signal period and a tail signal period after the beacon signals is received, the touch sensitive processing apparatus can determine an approximating or touching position of the active stylus and a head or tail information. Based on the head or tail information, the touch system can respond differently.

The present application is related to active stylus which can detect beacon signals via its head and tail and is also related to touch sensitive processing apparatus and touch system corresponding to the active stylus. According to received signals during a head signal period and a tail signal period after the beacon signals is received, the touch sensitive processing apparatus can determine an approximating or touching position of the active stylus and a head or tail information. Based on the head or tail information, the touch system can respond differently.

A test method for a combination of touch sensitive processing apparatus and touch panel. The test method is configured to find out whether a stored time difference value with regard to driving signals is appropriate for the combination. If not, the test method is further configured to test several candidate time difference values for finding out one or a best one, which can be stored in a non-firmware of a non-volatile memory as a parameter for further touch sensitive processing. When none of the candidate time difference values is appropriate, the combination is determined as disqualified.

A passive capacitive stylus, comprising: a body, made of non-conductive material, comprises an internal space; a conductor, disposed inside the internal space, comprises conductive foam; a first head made of conductive material and disposed inside the first open and being protruded outside the body in a first direction of the central axis, the first head is in contact with the conductor; and a second head made of conductive material and disposed inside the second open and being protruded outside the body in a second direction of the central axis, the second head is in contact with the conductor.

The present invention relates to a touch module and a touch screen. The touch module includes a touch panel located on the display module, a main circuit board located outside the casing of the touch screen, a plurality of signal cables connecting the touch panel and the main circuit board, and an equal potential wiring. By setting an equal potential wiring in the touch module to electrically bridge any two signal cables, a short circuit is formed between the shielding layers of the signal cables so that the potentials of different signal cables can be equalized to make the signal cables roughly the same degree of electrostatic or electromagnetic interference from the environment. By making the signals obtained by the signal cables be disturbed to approximately the same degree, the touch module can accurately determine the touch position.

A passive capacitive stylus, comprising: a body, made of non-conductive material, comprises an internal space; a conductor, disposed inside the internal space, comprises conductive foam; a first head made of conductive material and disposed inside the first open and being protruded outside the body in a first direction of the central axis, the first head is in contact with the conductor; and a second head made of conductive material and disposed inside the second open and being protruded outside the body in a second direction of the central axis, the second head is in contact with the conductor.