Abstract: A cryptocurrency management system is applied for business use. In the management system, a business management terminal device executes a CKD function calculation according to a master seed key to generate a plurality of management-end child keys. A cloud management sub-system executes the CKD function calculation according to each of the management-end child keys to generate a plurality of payment-receiving child keys. Each of payment-receiving terminal devices is applied to generate a payment barcode according to a device ID code thereof and one of the payment-receiving child keys corresponding to the kind of cryptocurrency that a client intends to pay for a consumption transaction, so as to provide a payment means for the client by using a mobile payment device to link a blockchain to pay the kind of cryptocurrency after scanning the payment barcode.

Abstract: A hierarchical beamforming method is provided, which comprises the following steps. Firstly, the vectors of the transmitter and the receiver are hierarchically indexed by using the codebooks with different coding methodology to generate hierarchical coding structures. Then, the corresponding vector fields between the transmitter and the receiver are switched according to the hierarchical coding structures. Thereafter, at least two aligning vector fields with greatest gain are detected. Finally, the corresponding aligning index pairs are used to build the channels.

Abstract: A hierarchical beamforming method is provided, which comprises the following steps. Firstly, the vectors of the transmitter and the receiver are hierarchically indexed by using the codebooks with different coding methodology to generate hierarchical coding structures. Then, the corresponding vector fields between the transmitter and the receiver are switched according to the hierarchical coding structures. Thereafter, at least two aligning vector fields with greatest gain are detected. Finally, the corresponding aligning index pairs are used to build the channels.

Abstract: A control method utilized in a clock data recovery device supporting a plurality of frequency bands, for controlling the clock data recovery device to select an operating frequency band from the plurality of frequency bands and to generate a recovery clock for generating retimed data, includes receiving a serial data stream with a data frequency; making each frequency band of the plurality of frequency bands correspond to a plurality of frequency band groups, wherein each frequency band group includes at least one frequency band and corresponds to different frequency ranges; selecting a frequency band group from the plurality of frequency band groups as a coarse-tuned frequency band group according to the data frequency and a locking voltage range; and selecting a frequency band from the plurality of frequency bands according to the data frequency, the locking voltage range and the coarse-tuned frequency band group for generating the recovery clock.

Abstract: A control method utilized in a clock data recovery device supporting a plurality of frequency bands, for controlling the clock data recovery device to select an operating frequency band from the plurality of frequency bands and to generate a recovery clock for generating retimed data, includes receiving a serial data stream with a data frequency; making each frequency band of the plurality of frequency bands correspond to a plurality of frequency band groups, wherein each frequency band group includes at least one frequency band and corresponds to different frequency ranges; selecting a frequency band group from the plurality of frequency band groups as a coarse-tuned frequency band group according to the data frequency and a locking voltage range; and selecting a frequency band from the plurality of frequency bands according to the data frequency, the locking voltage range and the coarse-tuned frequency band group for generating the recovery clock.

Abstract: To provide fast, robust matching of audio content, such as music, with visual content, such as images, videos, and text, a keyword is extracted from either the audio content or the visual content. The keyword is then utilized to match the audio content with the visual content, or the visual content with the audio content. The keyword may also be utilized to find other related keywords for expanding the amount of visual content or audio content matched. The matched audio and visual content may also be mixed to generate audiovisual content, such as a presentation or slideshow with background music.

Abstract: A method for cleaning a glass substrate before photoresist coating, which method can remove oxide compounds and organic residues from the surface of a metal layer of the glass substrate, comprises the steps of firstly providing an alkaline developer in a concentration of between 0.35% and 0.45%; later immersing the metal film of the glass substrate in the alkaline developer; then rinsing the metal film of the glass substrate after immersed with clean water; and lastly having the surface of the metal film of the glass substrate in a dry treatment.

Abstract: A method for cleaning a glass substrate before photoresist coating, which method can remove oxide compounds and organic residues from the surface of a metal layer of the glass substrate, comprises the steps of firstly providing an alkaline developer in a concentration of between 0.35% and 0.45%; later immersing the metal film of the glass substrate in the alkaline developer; then rinsing the metal film of the glass substrate after immersed with clean water; and lastly having the surface of the metal film of the glass substrate in a dry treatment.

Abstract: A control system for a disk device is integrated into the control unit of a host. The control unit transmits a control signals to the control system. The control system transfers the control signals to a signal transferor, and outputs information signal to the control unit. By receiving the control signal from the signal transferor, a spindle motor rotates an optical disk, a pick-up head picks up information signals on the optical disk to the signal transfer, and a feeding mechanism moves the pick-up head backward and forward along the radial direction of the optical disk. The disk device is just used for igniting, transferring, and transmitting signals, and the high efficient control unit of the host directly controls the operation of the disk device to extend usage scope.

Abstract: The performance method of audio effect is executive of application software in company with an output device. A referring signal indicative of a genre of a digital audio signal is provided. A DSP engine accepts the referring signal to process the referring signal and to produce a genre command. The output device accepts the genre command to synchronically perform an audio effect. Apparatus of audio performance includes a digital signal processor engine, an output circuit, and audio output device. The DSP engine, definitive of accepting a referring signal, is configured to produce a genre command in accordance with the referring signal. The output circuit is configured to accept the genre command and process an audio effect of the genre in accordance with the genre command. The audio output device is configured to perform the audio effect of the genre without manual settings.

Abstract: A method for cleaning a glass substrate before photoresist coating, which method can remove oxide compounds and organic residues from the surface of a metal layer of the glass substrate, comprises the steps of firstly providing an alkaline developer in a concentration of between 0.35% and 0.45%; later immersing the metal film of the glass substrate in the alkaline developer; then rinsing the metal film of the glass substrate after immersed with clean water; and lastly having the surface of the metal film of the glass substrate in a dry treatment.