Abstract: An out-of-service recovery search method includes establishing a frequency list including at least one searchable frequency, searching a suitable cell of a network according to the frequency list when the user terminal is in an out-of-service state, determining at least one first skip condition of the user terminal, performing a full-band power scan mechanism for scanning received signal strength indication (RSSIs) of user terminal supported frequency bands when the at least one first skip condition of the user terminal is absent and no suitable cell of the network is searched within the searchable frequency of the frequency list, skipping the full-band power scan mechanism when the at least one first skip condition of the user terminal is present and no suitable cell of the network is searched within the searchable frequency, and performing an RSSI sniffer for scanning a signal power of each frequency of the searchable frequency.

Abstract: A high-modulus black matte polyimide film is provided, the high-modulus black matte polyimide film includes polyimide in an amount from 75 to 93 wt % of the high-modulus matte polyimide film, in which dianhydride and diamine are polymerized to form a polyimide precursor, and the polyimide precursor is chemically cyclized to form the polyimide; carbon black in an amount from 2 to 8 wt % of the high-modulus matte polyimide film; and liquid crystal polymer micropowder having a particle size between 2 and 10 ?m and being in an amount from 5 to 20 wt % of the high-modulus matte polyimide film, wherein the high-modulus matte polyimide film has a gloss value at 60° being less than 50.

Abstract: A method for manufacturing a polyimide composite film for a flexible metal-clad substrate includes the following steps, providing a polyamide acid solution; providing fluorine polymer particles and mixing the fluorine polymer particles with a dispersant and an organic solution to prepare a fluorine polymer particle dispersion; forming a colloidal polyimide film from the polyamide acid solution; and coating the colloidal polyimide film with the fluorine polymer particle dispersion and then performing baking to form a polyimide composite film.

Abstract: A method for manufacturing a polyimide composite film for a flexible metal-clad substrate includes the following steps, providing a polyamide acid solution; providing fluorine polymer particles and mixing the fluorine polymer particles with a dispersant and an organic solution to prepare a fluorine polymer particle dispersion; forming a colloidal polyimide film from the polyamide acid solution; and coating the colloidal polyimide film with the fluorine polymer particle dispersion and then performing baking to form a polyimide composite film.

Abstract: A polyimide composite film for use in a flexible metal clad substrate, comprising: a polyimide base material film; a fluorine polymer layer, formed on at least one surface of the polyimide base material film, comprising polyimide resins and fluorine polymers, wherein the polyimide resin accounts for 2 to 20 wt % of the total solid content of the fluorine polymer layer, the aromatic functional group ratio of the polyimide resin in the fluorine polymer layer is greater than 35%, and the absorption onset wavelength (?onset) of the ultraviolet-visible spectrum is greater than 360 nm; a thickness ratio of the polyimide base material film to one layer of the fluorine polymer layers is 8:1 to 1:4; and a total thickness of the polyimide composite film is between 18 and 175 microns. Thus, the polyimide composite film has a low dielectric constant, low loss factor, and has good drilling processability.

Abstract: A polyimide film suitable for use in the fabrication of a graphite layer includes a polyimide derived from reaction of diamine monomers with dianhydride monomers, and a foaming agent incorporated in the polyimide. Moreover, a process of fabricating a graphite film includes providing a polyamic acid solution formed by reaction of diamine monomers with dianhydride monomers, incorporating a foaming agent into the polyamic acid solution, forming a polyimide film from the polyamic acid solution, applying a first thermal treatment so that the polyimide film is carbonized to form a carbon film, and applying a second thermal treatment so that the carbon film is converted to a graphite film.

Abstract: A method of making a graphite film is provided. The method is characterized in that a polyimide film is used as a precursor, and a carbonizing heat treatment is performed, in which the carbonizing temperature ranges from 500 to 800 degrees Celsius and the heating rate is equal to or lower than 2 degrees Celsius per minute. The highest carbonizing temperature is equal to or higher than 1000 degrees Celsius. The method is also characterized in that the graphitizing temperature ranges from 2200 degrees temperature to the highest graphitizing temperature in which the average heating rate is equal to or lower than 3 degrees Celsius per minute. The highest graphitizing temperature is equal to or higher than 2500 degrees Celsius.

Abstract: A method of making a graphite film is provided. The method is characterized in that a polyimide film is used as a precursor, and a carbonizing heat treatment is performed, in which the carbonizing temperature ranges from 500 to 800 degrees Celsius and the heating rate is equal to or lower than 2 degrees Celsius per minute. The highest carbonizing temperature is equal to or higher than 1000 degrees Celsius. The method is also characterized in that the graphitizing temperature ranges from 2200 degrees temperature to the highest graphitizing temperature in which the average heating rate is equal to or lower than 3 degrees Celsius per minute. The highest graphitizing temperature is equal to or higher than 2500 degrees Celsius.

Abstract: A method of making a carbonized film is provided. The method is characterized in that a polyimide film is used as a precursor, on which a carbonizing heat treatment is performed. The heating rate during the carbonizing heat treatment within 500 to 800 degrees Celsius is equal to or lower than 2 degrees Celsius per minute. The highest carbonizing temperature is equal to or higher than 1000 degrees Celsius so as to form a carbonized film. The carbonized film is processed with a graphitizing heat treatment, in which the heating rate for graphitization at 2200 degrees Celsius or above is equal to or lower than 3 degrees Celsius per minute. The highest graphitizing temperature is equal to or higher than 2500 degrees Celsius.

Abstract: A process of fabricating a graphite film includes providing a roll of a polyimide film, applying a first thermal treatment so that the roll of the polyimide film is carbonized to form a roll of a carbon film, and applying a second thermal treatment so that the roll of the carbon film is converted to a roll of a graphite film. The rolled polyimide film has a thickness between 10 ?m and 150 ?m, and includes polyimide derived from reaction of diamine monomers with dianhydride monomers, the dianhydride monomers including pyromellitic dianhydride (PMDA), the diamine monomers including 4,4?-oxydianiline (4,4?-ODA) and phenylenediamine (PDA) with a ODA:PDA diamine molar ratio being 50:50 to 80:20.

Abstract: A polyimide film suitable for use in the fabrication of a graphite layer includes a polyimide derived from reaction of diamine monomers with dianhydride monomers, and a foaming agent incorporated in the polyimide. Moreover, a process of fabricating a graphite film includes providing a polyamic acid solution formed by reaction of diamine monomers with dianhydride monomers, incorporating a foaming agent into the polyamic acid solution, forming a polyimide film from the polyamic acid solution, applying a first thermal treatment so that the polyimide film is carbonized to form a carbon film, and applying a second thermal treatment so that the carbon film is converted to a graphite film.

Abstract: A display and an operating method thereof are provided. The display includes a display panel, a timing controller, and a plurality of source drivers. The source drivers are coupled to the timing controller and the display panel, and the source drivers are coupled to one another. The timing controller outputs a plurality of training packets to the source drivers. When the source drivers lock a clock of the timing controller according to the training packets, a lock signal is output to the timing controller. The timing controller outputs a plurality of color data packets and at least one latch signal to the source drivers based on the lock signal. The source drivers respectively output a plurality of pixel voltages to the display panel according to the latch signal. The training packets and the color data packets are serially transmitted to the source drivers.

Abstract: A display and an operating method thereof are provided. The display includes a display panel, a timing controller, and a plurality of source drivers. The timing controller has a plurality of signal output terminals. The source drivers are coupled to the timing controller and the display panel. The timing controller outputs a plurality of training packets to the source drivers. When the source drivers lock a clock of the timing controller according to the training packets, the timing controller outputs a plurality of control packets and a plurality of color data packets to the source drivers. The source drivers respectively output a plurality of pixel voltages corresponding to the color data packets to the display panel according to the corresponding control packets. The training packets, the control packets, and the color data packets are serially transmitted to the source drivers via the signal output terminals.

Abstract: An apparatus for generating a pilot pattern for data to be transmitted in an orthogonal frequency-division multiplexing (OFDM) based communication system, having a for allocating pilot symbols for a plurality of data streams to form a plurality of pilot clusters in the pilot pattern, wherein each of the pilot clusters includes ones of the pilot symbols, the ones of the pilot symbols being for respectively different ones of the data streams. The apparatus also includes a mechanism for moving at least one of the pilot clusters from a first location in the resource block to a second location in the resource block to generate a second pilot pattern, the first and second locations being symmetrical in time, and a mechanism for generating a third pilot pattern based on the first and second pilot patterns.

Abstract: A source driver includes a first differential amplifier, a first output stage, a second differential amplifier, a second output stage and a multiplexer. The first differential amplifier is utilized for receiving a first differential input signal pair to generate a first differential output signal pair. The second differential amplifier is utilized for receiving a second differential input signal pair to generate a second differential output signal pair. The multiplexer couples the first differential amplifier to the first output stage and couples the second differential amplifier to the second output stage under a first configuration, and couples the first differential amplifier to the second output stage and couples the second differential amplifier to the first output stage under a second configuration.

Abstract: A method for generating a pilot pattern for data to be transmitted in an orthogonal frequency-division multiplexing (OFDM) based communication system includes: allocating pilot symbols for a plurality of data streams to form a plurality of pilot clusters in the pilot pattern, wherein each of the pilot clusters includes ones of the pilot symbols, the ones of the pilot symbols being for respectively different ones of the data streams.

Abstract: A display and an operating method thereof are provided. The display includes a display panel, a timing controller, and a plurality of source drivers. The timing controller has a plurality of signal output terminals The source drivers are coupled to the timing controller and the display panel. The timing controller outputs a plurality of training packets to the source drivers. When the source drivers lock a clock of the timing controller according to the training packets, the timing controller outputs a plurality of control packets and a plurality of color data packets to the source drivers. The source drivers respectively output a plurality of pixel voltages corresponding to the color data packets to the display panel according to the corresponding control packets. The training packets, the control packets, and the color data packets are serially transmitted to the source drivers via the signal output terminals.

Abstract: A display and an operating method thereof are provided. The display includes a display panel, a timing controller, and a plurality of source drivers. The source drivers are coupled to the timing controller and the display panel, and the source drivers are coupled to one another. The timing controller outputs a plurality of training packets to the source drivers. When the source drivers lock a clock of the timing controller according to the training packets, a lock signal is output to the timing controller. The timing controller outputs a plurality of color data packets and at least one latch signal to the source drivers based on the lock signal. The source drivers respectively output a plurality of pixel voltages to the display panel according to the latch signal. The training packets and the color data packets are serially transmitted to the source drivers.

Abstract: A transmitter and the method therefor are provided. The transmitter is applied in an orthogonal frequency division multiplexing (OFDM) based or other multicarrier communication systems. The transmitter uses N sub-carriers. Among the N sub-carriers, L sub-carriers (or tones) are reserved for PAPR reduction. L is less than N. The method includes the following steps. Original frequency domain data symbols are generated and fed into the reserved-tone symbol generation unit. The reserved-tone symbols are generated by using pure frequency domain signal processing. Then the reserved-tone symbols are combined with original data symbols to generate combined PAPR reduction signal. The resultant PAPR reduction signal can be fed into reserved-tone symbol generation unit iteratively to obtain updated reserved-tone symbols. For proper iterations, the original data symbols combined with L frequency domain reserved-tone symbols will result in lower PAPR transmit signal.

Abstract: A display and an operating method thereof are provided. The display includes a display panel, a timing controller, and a plurality of source drivers. The timing controller has a plurality of signal output terminals. The source drivers are coupled to the timing controller and the display panel. The timing controller outputs a plurality of training packets to the source drivers. When the source drivers lock a clock of the timing controller according to the training packets, the timing controller outputs a plurality of control packets and a plurality of color data packets to the source drivers. The source drivers respectively output a plurality of pixel voltages corresponding to the color data packets to the display panel according to the corresponding control packets. The training packets, the control packets, and the color data packets are serially transmitted to the source drivers via the signal output terminals.