| Patent application number | Description | Published |
|---|
| 20090174257 | LARGE POWER MULTI-OUTPUTS POWER SUPPLY STRUCTURE HAVING RELATIVELY HIGH EFFICIENCY IN LOAD RANGE AND CONTROLLING METHOD THEREOF - The configurations of a switched-mode power supply and a controlling method thereof are provided. The proposed switched-mode power supply includes a first output converter receiving a DC input voltage and generating a first high power DC voltage output and at least one low power DC voltage output, and a second output converter receiving the DC input voltage and generating a second high power DC voltage output coupled to the first high power DC voltage output to generate a coupled output, wherein the first output converter works and the second output converter idles when a transient power of the coupled output is not larger than a rated output power of the first high power DC voltage output, and both the first and the second output converters work when the transient power is larger than the rated output power. | 07-09-2009 |
| 20090230929 | BRIDGELESS PFC CIRCUIT FOR CRM AND CONTROLLING METHOD THEREOF - The configurations of a bridgeless PFC circuit system and a controlling method thereof are provided. The proposed system includes a bridgeless PFC circuit having a first and a second input terminals, a first switch having a first terminal, a first inductor having a first terminal coupled to the first input terminal and a second terminal coupled to the first terminal of the first switch, and a second inductor having a first terminal coupled to the second input terminal, a first auxiliary winding coupled to the first inductor and generating a first sensing signal, and a second auxiliary winding coupled to the second inductor and generating a second sensing signal, wherein the first and the second sensing signals are used to generate an inductor current sensing signal controlling the switching of the first switch accordingly. | 09-17-2009 |
| 20100259957 | BRIDGELESS PFC CIRCUIT FOR CRITICAL CONTINUOUS CURRENT MODE AND CONTROLLING METHOD THEREOF - The configurations of a bridgeless PFC circuit and a controlling method thereof are provided. The proposed circuit includes an AC power source, a first and a second bridge arms, each of which has a middle point, wherein the first terminal of the first bridge arm connects the first terminal of the second bridge arm, the second terminal of the first bridge arm connects the second terminal of the second bridge arm, and the middle point of the second bridge arm connects the second terminal of the AC power source, a bidirectional switch module connected to the two middle points, an inductor having a first terminal coupled to the AC power source and a second terminal coupled to the middle point of the first bridge arm and a sensing circuit magnetically coupled to the inductor. | 10-14-2010 |
| 20110013436 | BRIDGELESS PFC CIRCUIT SYSTEM HAVING CURRENT SENSING CIRCUIT AND CONTROLLING METHOD THEREOF - The configurations of a bridgeless PFC circuit system and a controlling method thereof are provided. The proposed system includes a bridgeless PFC circuit including a first bridge arm having a first and a second terminals and a first middle point, a second bridge arm having a first and a second terminals and a second middle point, and a bidirectional switch coupled between the first middle point and the second middle point, and an inductor coupled between the first middle point and an AC power source coupled to the second middle point, and a current sensing circuit including a first current transformer sensing a first current flowing through the bidirectional switch, which having a primary side winding coupled to the bidirectional switch and a first and a second secondary side windings, and a switching device coupled to the two secondary side windings. | 01-20-2011 |
| 20110122662 | Buck and buck/boost converter systems having auxiliary circuits and method thereof - The configurations of a buck type and a buck/boost type converter systems and a controlling method thereof are provided in the present invention. The proposed buck/boost type converter system includes a rectifier bridge, a first auxiliary circuit including a first unidirectional switch coupled to the rectifier bridge and a second unidirectional switch coupled to the first unidirectional switch, a first capacitor coupled to the first unidirectional switch and the rectifier bridge, a buck/boost converter having a first input terminal coupled to the first unidirectional switch, a second input terminal coupled to the first capacitor, a first output terminal coupled to the second unidirectional switch and a second output terminal, a second capacitor electrically connected to the first and the second output terminals in parallel, and a DC source coupled to the second unidirectional switch. | 05-26-2011 |
| Patent application number | Description | Published |
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| 20080292277 | Apparatus and Method for Activating an Interactive Application - An extracting apparatus ( | 11-27-2008 |
| 20090254932 | INSERTING ADVERTISEMENTS IN A TELEVISION PROGRAM - The present invention relates to a method and apparatus for broadcasting television programs, in particular to a method and apparatus for inserting an advertisement into a broadcast television program. An object of the invention is to provide a method for inserting an advertisement segment into a television program of an Internet Protocol Television (IPTV) channel, the method comprises the steps of: receiving a request from a user that asks for viewing the television program; monitoring the viewing behavior of the user toward the IPTV channel according to an advertisement policy of the IPTV channel, the advertisement policy comprising providing an advertisement segment based on the user's viewing behavior on the IPTV channel; determining whether the monitored viewing behavior matches the advertisement policy; if the monitored viewing behavior matches the advertisement policy, inserting the advertisement segment into the television program. According to the invention, during the process of viewing a program, a user will have to view a certain amount of advertisements according to a predefined advertisement policy even though the user relocates the television program. | 10-08-2009 |
| 20100064317 | METHOD AND APPARATUS FOR PLAYING BACK A PROGRAM - This invention provides a method and apparatus for playing back a program, and the program is being broadcast. Firstly, receiving a request on the program being broadcast for playing back a section of the program in non-real-time mode from a subscriber; acquiring a corresponding internet address according to information in the broadcast signal of the program; and obtaining the section according to the internet address for playing back; and finally, playing back the section. The request includes one of the following commands: pause, fast winding, fast rewinding, rewinding, and playing back at designated non-real time point. During the broadcast of a program, the present invention obtaining a section of the program in a non-real time mode by acquiring an internet address corresponding to the program and in the stream media form. | 03-11-2010 |
