Abstract: A connecting device for light fixtures has a lens fixing plate, a light fixture assembly, a button, a first spring, a connecting rod and a buckle. The buckle is fixedly connected to the light fixture assembly. A mounting base is disposed on the lens fixing plate. One end of the connecting rod is located in an inner cavity of the mounting base and the other end thereof is extended out from the mounting base. The end of the connecting rod extending out from the mounting base is provided with a boss, and the connecting rod located in the inner cavity of the mounting base is sleeved with the first spring. The button is connected to the end of the connecting rod located in the inner cavity of the mounting base.

Abstract: A connecting device for light fixtures has a lens fixing plate, a light fixture assembly, a button, a first spring, a connecting rod and a buckle. The buckle is fixedly connected to the light fixture assembly. A mounting base is disposed on the lens fixing plate. One end of the connecting rod is located in an inner cavity of the mounting base and the other end thereof is extended out from the mounting base. The end of the connecting rod extending out from the mounting base is provided with a boss, and the connecting rod located in the inner cavity of the mounting base is sleeved with the first spring. The button is connected to the end of the connecting rod located in the inner cavity of the mounting base.

Abstract: Methods and apparatuses for dynamically adjusting sync windows are described. A default sync window is set; a data signal is input; detecting if parts of the data signal within the sync window form a sync pattern; accumulating a count of the sync pattern within and without the sync window; and reducing the sync window when the count of sync pattern within the sync window achieves a first threshold value, and increasing the sync window when the count of the sync pattern outside the sync window achieves a second threshold value.

Abstract: The method of detecting defect signals includes: setting a default pit length range; inputting a data signal including a plurality of pits with different pit lengths; transferring the data signal into NRZ signal and counting the pit length of each pit; accumulating the number of the pits whose pit length are within the default pit length range, and accumulating the number of the pits whose pit lengths are outside the default pit length range but within the corresponding ranges; changing the logic state of a defect flag signal when one of the accumulative value reaches a corresponding threshold. The present invention also provides an apparatus for detecting defect signals.

Abstract: The method of detecting defect signals includes: setting a default pit length range; inputting a data signal including a plurality of pits with different pit lengths; transferring the data signal into NRZ signal and counting the pit length of each pit; accumulating the number of the pits whose pit length are within the default pit length range, and accumulating the number of the pits whose pit lengths are outside the default pit length range but within the corresponding ranges; changing the logic state of a defect flag signal when one of the accumulative value reaches a corresponding threshold. The present invention also provides an apparatus for detecting defect signals.

Abstract: Method of dynamic adjusting the sync window of present invention including setting a default sync window; inputting a data signal once in a time; detecting if parts of the data signal within the sync window is a sync pattern; accumulating times of the sync pattern within and without the sync window; and reducing the sync window when times of sync pattern within the sync window achieving one threshold value, and increasing the sync window when times of sync pattern outside the sync window achieves another threshold value.