Peking University

Beijing Founder Electronics Co., Ltd.

Sg Micro Corp.

Tsinghua University

Founder Information Industry Holdings Co., Ltd.

Founder Information Industry Group

Lei Tan

Fei Guo

Yu Tian

XiaoHong Jia

Chong Xiang

YiJie Huang

Fei Xiao

ZhaoXiang Zhang

YuMing Wang

Ganlin Cheng

Meng Lang

Disclosed in an interface circuit, in which: a current input circuit receives an input current signal of a signal input terminal, an input voltage detection circuit compares an input voltage signal of the signal input terminal with a reference voltage, and provides a detection signal to the current input circuit according to the comparison result, a phase-inversion output circuit is connected with the current input circuit at the first node, and generates a voltage conversion signal according to a voltage potential of the first node, and a buffer circuit performs signal shaping on the voltage conversion signal to obtain an output signal. The current input circuit pulls up the voltage potential of the first node when the detection signal indicates that the input voltage signal is greater than the reference voltage and the input current signal is greater than a reference current.

Interface circuit

Disclosed is a controller and a control method of a thermoelectric cooler-heater device. The controller includes a switching power supply coupled to the thermoelectric cooler-heater device to provide a first driving current; and a constant-current constant-voltage power supply coupled to the thermoelectric cooler-heater device to provide a second driving current. According to a temperature detection signal, one of the switching power supply and the constant-current constant-voltage power supply operates, the first driving current is a continuous driving current flowing from an anode end to a cathode end of the thermoelectric cooler-heater device, the second driving current is a pulse driving current flowing from the cathode end to the anode end. In cooling mode, the controller uses the switching power supply to provide continuous output to improve monotonicity; in heating mode, the controller uses the constant-current constant-voltage power supply to provide pulse output to improve circuit efficiency and provide protection function.

Controller and control method of thermoelectric cooler-heater device

A pressure-adjustable auxiliary control system for high-pressure gas sealing detection includes: a high-pressure chamber environment monitoring unit configured to construct high-pressure test gas sealing environment and to test sealing performance of a sealing member; a first gas pipeline divided into two branches, of which one branch is connected to the high-pressure chamber environment monitoring unit as a first gas replacement path; a second gas pipeline which is connected to a test gas pressurization path together with the other branch of the first gas pipeline, where a first booster pump processing unit and a second booster pump processing unit are sequentially arranged in the test gas pressurization path for pressurizing the test gas, and are connected to the high-pressure chamber environment monitoring unit; a system air control module configured for control of respective air control valves; and a booster pump air control module and a driving air source preprocessing unit.

Pressure-adjustable auxiliary control system for high-pressure gas sealing detection

A system for preprocessing a print document is disclosed. The system may comprise a document inputting unit, configured to receive a print document, a document processing unit, configured to process the print document that is received by the document inputting unit, and a document outputting unit, configured to output a print document that has been processed by the document processing unit. Further, a method for preprocessing a print document is also disclosed.

Extendable system for preprocessing print document and method for the same

The invention discloses a method for displaying a text block, a method for processing a text block, a client and a server, where the method for displaying a text block includes the steps of: a client collecting font parameters and layout parameters of a text block; the client transmitting the font parameters and the layout parameters of the text block to a server; and the client receiving vector description information of the text block, generated according to the font parameters and the layout parameters of the text block, sent from the server and executing drawing commands to draw the text block and display the text block on a screen. With embodiments of the invention, the effect of a personalized presswork printed at the server can be kept consistent with the effect of displaying the text block on the screen.

Methods and apparatuses for displaying text block and processing text block

Growing community of inventors

Beijing, China

Lei Tan