Patent application number | Description | Published |
20110007533 | POWER FACTOR CORRECTION CIRCUIT - A power factor correction circuit includes reactors L | 01-13-2011 |
20110069514 | DC CONVERSION APPARATUS - A DC conversion apparatus includes a plurality of current resonant converters. Each of the current resonant converters has two switching elements connected in series, a transformer having primary and secondary windings, a series resonant circuit including a resonant reactor, the primary winding of the transformer, and a resonant capacitor, and a rectifying circuit to rectify a voltage generated by the secondary winding of the transformer. The DC conversion apparatus also includes a smoothing circuit having a reactor L | 03-24-2011 |
20110309682 | SWITCHING POWER SUPPLY CIRCUIT - The present invention includes: a first series circuit which is connected between one end and the other end of a DC power supply, and in which a reactor, a first diode, and a first capacitor are connected in series; a first switching element connected between the one end of the DC power supply and a connection point between the reactor and the first diode; a second series circuit which is connected to the first diode in parallel, and in which a second switching element and a second capacitor are connected in series; and a control circuit configured to control the on and off of the second switching element in order that turn on of the first switching element becomes to zero-voltage switching. | 12-22-2011 |
20120307529 | SWITCHING POWER SOURCE APPARATUS - A switching power source apparatus includes a first arm including first and second switching elements, a second arm including third and fourth switching elements, a series circuit connected between a connection point of the first and second switching elements and a connection point of the third and fourth switching elements and including a capacitor and a primary winding, a rectifying-smoothing circuit that rectifies and smoothes a voltage of a secondary winding and provides an output voltage, a reactor connected to a connection point of the first and second switching elements and a DC input end, and a controller that turns on/off the first and second switching elements alternately and the third and fourth switching elements alternately and synchronizes the first and third switching elements with each other and the second and fourth switching elements with each other. | 12-06-2012 |
20130009675 | GATE DRIVER - A gate driver of a switching element Q | 01-10-2013 |
20130021007 | SWITCHING POWER SOURCE CIRCUIT - A switching power source circuit includes a first reactor having coils L | 01-24-2013 |
20140071724 | BRIDGE-LESS STEP-UP SWITCHING POWER SUPPLY DEVICE - A bridge-less step-up switching power supply device includes (i) a first and a second reactor having: a first and a second main winding connected to a first and a second input terminal, respectively; and a first and a second auxiliary winding magnetically coupled to the first main winding and connected to the first and second main windings, the first and second auxiliary windings having a first and a second leakage inductance, respectively; (ii) a first and a second diode connected between the first and second auxiliary windings and a first output terminal, respectively; (iii) a first capacitor connected between the first output terminal and a second output terminal; (iv) a second capacitor connected between a connection point of a third switch and a fourth switch, and the first output terminal; and (v) a controller for controlling turning on/off of first to fourth switches. | 03-13-2014 |
20140117972 | CURRENT DETECTION CIRCUIT - Provided is a current detection circuit which can reduce the resistance loss for a current transformer, meeting the requirements for size and cost thereof. The current detection circuit includes a current transformer and a capacitor connected across a secondary winding of the current transformer, the capacitor making a phase adjustment such that the primary side current flowing through the primary winding of the current transformer and the voltage across the capacitor are in phase with each other. With this configuration, the primary side current can be detected as the voltage across the capacitor with no need for using a matching resistor, with which, if the winding ratio of the current transformer is small, the resistance loss will be large, whereby a current detection circuit of low loss using a current transformer which is small in size and low in cost can be configured. | 05-01-2014 |
20140119061 | SYNCHRONOUS RECTIFIER CIRCUIT - Provided is a synchronous rectifier circuit which, even if a synchronous rectification element having a low on-resistance is used, can perform a synchronous rectifying operation without being influenced by the inductance component. It is a synchronous rectifier circuit having a synchronous rectification element Q | 05-01-2014 |
Patent application number | Description | Published |
20130207626 | Switching Power Supply Circuit - A switching power supply circuit includes: a reactor that has a main winding and an auxiliary winding having a leakage inductance, which are magnetically coupled with each other and are connected with each other at one ends thereof; a first series circuit, which has an auxiliary switch and a resonance capacitor connected in series, and which is connected in parallel with a direct current power supply via a main switch; a first diode that, which is connected in parallel with the first series circuit via the auxiliary winding; a smoothing capacitor, which is connected in parallel with at least one of the first series circuit and first diode via the main winding; and a control circuit, which alternately turns on and off the main switch and auxiliary switch to thus control an output voltage of the smoothing capacitor to be a predetermined value. | 08-15-2013 |
20140376271 | Switching Power-Supply Device - A switching power-supply device, includes a first terminal; a first winding connected to the first terminal; a second winding, which is connected in series to the first winding and is magnetically coupled to the first winding; a first capacitor connected in series to the second winding; a transformer including a primary winding connected in series to the first capacitor and a secondary winding magnetically coupled to the primary winding; a rectifying-and-smoothing circuit connected to the secondary winding; a second terminal, which is connected to an opposite end of the primary winding opposite to a connection end connecting to the first capacitor; a first switching element, which is connected between a connection point of the first winding and the second winding and the second terminal; and a control circuit, which controls first switching element to turn on-and-off. | 12-25-2014 |
Patent application number | Description | Published |
20100301120 | Method for denoting optical recognition data with multicolor light emitters, method for marking the same, light-emitting device, and method for detecting data and position - A technology to measure the position of a distant mark object and denote an automatic recognition data by the object. A light-emitting device includes an R (red) light, a G (green) light, and a B (blue) light emitters, and a control device for controlling their light-up states. The light-emitting device is affixed to the mark object and made to emit the lights by a predetermined light-emitting pattern. The light-emitting pattern forms a time-change optical recognition code denoting a desired data by change of the colors along the time axis. This optical recognition code is accomplished with a small area of space. Further, by photographing the light-emitting device with a CCD camera and the like, it is possible to recognize the position of the light-emitting device, that is, the position of the mark object. By carrying out this behavior continuously, it is possible to trace the movement of the mark object. | 12-02-2010 |
20110150285 | LIGHT EMITTING DEVICE AND METHOD FOR TRACKING OBJECT - A technique and a light emitting device that can smoothly read out data while tracking a position of the light emitting device (an object). The light emitting device expresses data with “a change in the change of a color (switching of changes)”. The light emitting device specifies an object and the position thereof with a first primary change and thereafter expresses data with, so to speak, a secondary change (switching of the primary change). The primary change means that G and B alternately turn on (indicated by G*B) and so on. The secondary change means a change from the condition (G*B), in which G and B alternately turn on, to the condition (B*R) in which B and R alternately turn on. Thus, since data is expressed by the change of color condition changes, it is easier to freely express data while the position of an object is specified. | 06-23-2011 |
Patent application number | Description | Published |
20090194596 | Optical Symbol, Item to Which Optical Symbol is Attached, Method of Attaching Optical Symbol to Item, and Optical Recognition Code Recognizing Method - It is possible to provide a code using an optical symbol which can be read with a high accuracy even under an environment of a low printing accuracy including printing on an article which can be easily deformed. Cells are arranged in a linear shape and particular data is indicated by a state of element in each of the cells (whether the element is colored). Especially a particular color is fixed to each of the elements and it is possible to use the two states whether the color is attached or note. This state can express the data. Accordingly, it is possible to realize a code system capable of ready data if the element sequence continuity and the form (topology) as the linear state are maintained. | 08-06-2009 |
20090314838 | Optical Symbol, Article to which the Optical Symbol is Attached, Method for Attaching Optical Symbol to Article, Optical Symbol Decoding Method, Related Device, and Related Program - It is possible to linearly arrange cells and indicate particular data in the order of colors of respective sells. A code system uses an optical symbol decoding method capable of reading the color arrangement if the arrangement continuity and the linear shape are maintained. The data expression method may be other than “the order of colors.” For example, it is possible to employ a method for allocating a numeric value to each of the colors by one-to-one correspondence (R=0, B=1, etc.), a method for allocating data by a color transition (“CM”=“MY”=“YC”=0, “CY”=“YM”=“MC”=1, etc.), a method for allocating data for a combination of colors, and the like. | 12-24-2009 |
20100091307 | MARKING METHOD BY MASKING COLOR, MARKING METHOD BY REMOVING COLOR AND MARKING METHOD BY CHANGING COLOR - A method for more easily marking an optical recognition code is accomplished. | 04-15-2010 |
20100096457 | OPTICAL RECOGNITION CODE RECOGNIZED RESULT DISPLAYING METHOD - A method for displaying the result in an improved manner in the case of collectively reading in and recognizing a plurality of 1D color bit codes is provided. A “recognized data” as a result of recognizing a code symbol and a “corresponding pattern specific display” indicating the successfully recognized code symbol are displayed in such a manner as superimposed on the original image. The recognized data is a data successfully recognized from the code symbol. The corresponding pattern specific display is a graphic pattern for indicating a finally successfully recognized code symbol, such as a rectangular frame (utilizing a conspicuous color, e.g., orange and the like), etc. By virtue of such a display, the operator is able to know which code symbol was recognized and what the recognition result is, and thereby a highly convenient optical recognition code recognizer and method can be obtained. | 04-22-2010 |
20100252636 | Optical recognition code, method for marking the same, method for reading out the same, and articles marked with the same - A method that lays a certain restriction on a distance between color areas and carries out “cutting out” and “sequence recognition.” | 10-07-2010 |