Abstract: A current regulation system for generating a charging current curve for charging a rechargeable battery is provided, the system including a current regulation module coupled to a power converter to output a conversion current in a constant current mode and a constant voltage mode, a voltage-to-current regulation module coupled to the rechargeable battery to output a voltage conversion current in the constant voltage mode, a temperature-to-current regulation module and a resistance. The temperature-to-current regulation module outputs a temperature conversion current in the constant current mode and the constant voltage mode. The resistance is coupled to the current regulation module, the voltage-to-current regulation module and the temperature-to-current regulation module to regulate the voltage conversion current or the temperature conversion current, the conversion current is weakened by maintain a constant value so the charging current curve is regulated when the power of the rechargeable battery is full.

Abstract: A current regulation system for generating a charging current curve for charging a rechargeable battery is provided, the system including a current regulation module coupled to a power converter to output a conversion current in a constant current mode and a constant voltage mode, a voltage-to-current regulation module coupled to the rechargeable battery to output a voltage conversion current in the constant voltage mode, a temperature-to-current regulation module and a resistance. The temperature-to-current regulation module outputs a temperature conversion current in the constant current mode and the constant voltage mode. The resistance is coupled to the current regulation module, the voltage-to-current regulation module and the temperature-to-current regulation module to regulate the voltage conversion current or the temperature conversion current, the conversion current is weakened by maintain a constant value so the charging current curve is regulated when the power of the rechargeable battery is full.

Abstract: A method for multi-type barcode recognition is provided for recognizing a current barcode, so as to determine a barcode type of the current barcode among supported barcode types and the corresponding barcode information. In the method, a record table is loaded in advance for recording the matching frequency that each supported barcode type matches the barcode type of recognized barcodes. According to the matching frequency these supported barcode types are sorted in a recognizing sequence to be utilized to recognize the current barcode according to the recognizing sequence. Every time a current barcode is to be recognized, the supported barcode type utilized to recognize the current barcode is picked up according to the recognizing sequence, so as to determine the barcode type of the current barcode. The supported barcode type that most frequently matches the recognized barcode will be picked up at first, therefore, the barcode recognition efficiency is improved.

Abstract: A method for multi-type barcode recognition is provided for recognizing a current barcode, so as to determine a barcode type of the current barcode among supported barcode types and the corresponding barcode information. In the method, a record table is loaded in advance for recording the matching frequency that each supported barcode type matches the barcode type of recognized barcodes. According to the matching frequency these supported barcode types are sorted in a recognizing sequence to be utilized to recognize the current barcode according to the recognizing sequence. Every time a current barcode is to be recognized, the supported barcode type utilized to recognize the current barcode is picked up according to the recognizing sequence, so as to determine the barcode type of the current barcode. The supported barcode type that most frequently matches the recognized barcode will be picked up at first, therefore, the barcode recognition efficiency is improved.

Abstract: The power-on reset circuit of the present invention includes a buffer, a delay circuit connected to the buffer and a constant current source circuit connected to the delay circuit. The delay circuit is made up by two capacitors, two resistors, an NMOS transistor and a PMOS transistor. The two capacitors are respectively made up by an NMOS transistor and a PMOS transistor. A current of the constant current source circuit changes along with a voltage variation of a DC power supply to respectively provide two constant voltage reference sources to the corresponding gates of the NMOS transistor and the PMOS transistor of the delay circuit. The NMOS transistor and the PMOS transistor of the constant current source circuit and the NMOS transistor and the PMOS transistor of the delay circuit form a mirroring circuit.

Abstract: A current source circuit having dual feedback paths that is insensitive to supply voltage includes a first current mirror having a first PMOS transistor and a second PMOS transistor. A second current mirror cascodes with the first current mirror including a first NMOS transistor and a second NMOS transistor. The first current mirror and the second current mirror are respectively coupled to a third PMOS transistor and a third NMOS transistor. The third PMOS transistor, the third NMOS transistor and the second PMOS transistor and the second NMOS transistor form a positive feedback path. The third PMOS transistor, the third NMOS transistor and the first PMOS transistor and the first NMOS transistor form a negative feedback path. A gain of the negative feedback path is larger than the gain of the positive feedback path. In this way, an overall gain of the current source is effectively enhanced.