Abstract: This invention discloses circuits and methods for generating a pixel clock. The circuits utilize an image signal of a first format to generate a pixel clock, which can be utilized to generate an image signal of a second format. The circuits include a reference clock generation circuit, an image processing circuit, and a clock adjustment circuit. The reference clock generation circuit generates a reference clock. The image processing circuit processes the image signal of the first format to generate a control signal. The clock adjustment circuit, which is coupled to the reference clock generation circuit and the image signal processing circuit, generates the pixel clock according to the reference clock and the control signal. The control signal is substantially a periodic signal, whose frequency is proportional to the frequency of a synchronization signal of the image signal of the second format.

Abstract: The present disclosure provides a crystal-less clock and data recovery (CDR) circuit and a frequency detection method thereof. The CDR circuit includes a clock generator and a frequency detection module. The clock generator is operable to generate a clock signal. The frequency detection module coupled to the clock generator is configured for outputting a control signal to the clock generator to increase or decrease the frequency of the clock signal according to a data signal received and a transition density.

Abstract: The present invention discloses a multi-channel timing recovery device capable of generating a common clock for processing a plurality of data channel signals, comprising: a first channel timing recovery circuit, and a second channel timing recovery circuit. The said first channel timing recovery circuit includes a first detecting circuit capable of detecting phase and/or frequency, an oscillation control circuit, an oscillator and a feedback circuit, and is operable to generate the common clock according to a first channel signal which could be a clock signal or a data signal. The said second channel timing recovery circuit includes a second phase detecting circuit, a second phase control circuit and a second clock output circuit, and is operable to generate a second clock according to the common clock and determine the phase of the second clock according to a second channel signal which is a data signal.

Abstract: The present invention discloses a multi-channel timing recovery device capable of generating a common clock for processing a plurality of data channel signals, comprising: a first channel timing recovery circuit, and a second channel timing recovery circuit. The said first channel timing recovery circuit includes a first detecting circuit capable of detecting phase and/or frequency, an oscillation control circuit, an oscillator and a feedback circuit, and is operable to generate the common clock according to a first channel signal which could be a clock signal or a data signal. The said second channel timing recovery circuit includes a second phase detecting circuit, a second phase control circuit and a second clock output circuit, and is operable to generate a second clock according to the common clock and determine the phase of the second clock according to a second channel signal which is a data signal.

Abstract: This invention discloses circuits and methods for generating a pixel clock. The circuits utilize an image signal of a first format to generate a pixel clock, which can be utilized to generate an image signal of a second format. The circuits include a reference clock generation circuit, an image processing circuit, and a clock adjustment circuit. The reference clock generation circuit generates a reference clock. The image processing circuit processes the image signal of the first format to generate a control signal. The clock adjustment circuit, which is coupled to the reference clock generation circuit and the image signal processing circuit, generates the pixel clock according to the reference clock and the control signal. The control signal is substantially a periodic signal, whose frequency is proportional to the frequency of a synchronization signal of the image signal of the second format.

Abstract: A shoe cover with a replaceable skidproof component comprises a shoe cover, a plurality of skidproof bases, and a plurality of replaceable skidproof components. The shoe cover is integrally formed of elastic and ductile material and extends upwardly from a front edge and a rear edge to form a front cover-stopping portion and a rear cover-stopping portion. The front and the rear cover-stopping portions have a plurality of openings that form at least two stopping pieces. A containing space is formed between the shoe cover and the two cover-stopping portions. The skidproof bases are buried in a bottom of the shoe cover. The replaceable skidproof components are mutually locked to the skidproof bases. The shoe cover with replaceable skidproof components provides a simple structure, easy usage, and is inexpensive to produce.

Abstract: A lighting keyboard and lighting module for a keyboard is disclosed. The lighting module comprises a light source, a backlight plate having a surface with light-reflective protrusions and a light-reflecting plate. In one embodiment, the thickness of the backlight plate varies linearly and the light source is located on the thicker side of the backlight plate. The light-reflecting plate reflects light beams reflected from the surface with light-reflective protrusions of the backlight plate and renders the keyboard illuminated.

Abstract: A lighting keyboard and lighting module for a keyboard is disclosed. The lighting module comprises a light source, a backlight plate having a surface with light-reflective protrusions and a light-reflecting plate. In one embodiment, the thickness of the backlight plate varies linearly and the light source is located on the thicker side of the backlight plate. The light-reflecting plate reflects light beams reflected from the surface with light-reflective protrusions of the backlight plate and renders the keyboard illuminated.