Patent application number | Description | Published |
20090119043 | Phase imbalance monitoring apparatus, amplitude imbalance monitoring apparatus, and apparatus using the same - The present invention discloses a phase imbalance monitoring apparatus, an amplitude imbalance monitoring apparatus, as well as an apparatus incorporating the same. The phase imbalance monitoring apparatus is for use in an apparatus in which imbalance between an I branch signal and a Q branch signal in quadrature to each other is required to be monitored, and is characterized in comprising a preprocessing unit, for performing preprocessing on the I branch signal and the Q branch signal to extract essential information relevant to correlation of the signals; and a correlation unit, for performing correlation processing on the extracted essential information to learn of the phase imbalance between the I branch signal and the Q branch signal. | 05-07-2009 |
20090129787 | Optical coherent receiver, frequency offset estimating apparatus and method for optical coherent receiver - The present invention discloses an optical coherent receiver, and a frequency offset estimating apparatus and a frequency offset estimating method for use in the optical coherent receiver. The optical coherent receiver includes a front end processing section for changing an optical signal into a base band digital electric signal. The frequency offset estimating apparatus comprises a phase offset calculating section, for calculating a phase offset in said base band digital electric signal; a phase offset change calculating section, for calculating a change of said phase offset, namely a phase offset change, in accordance with the phase offset calculated by said phase offset calculating section; an ambiguity deciding section, for deciding whether there is ambiguity in said phase offset change calculated by said phase offset change calculating section, and outputting the phase offset change having no ambiguity; and a loop filtering section, for acquiring a weighted average of the phase offset change outputted by said ambiguity deciding section. | 05-21-2009 |
20090141831 | Phase error estimator, coherent receiver and phase error estimating method - The present invention relates to a phase error estimator, a coherent receiver and a phase error estimating method. The phase error estimator estimates a phase error in an inputted base band electric signal and feeds back said phase error; said phase error estimator comprises: a pre-decider, for judging a phase of data in said base band electric signal in accordance with said feedback phase error; a phase error complex value extracting section, for extracting a real part and an imaginary part of the phase error in accordance with the judgment result of said pre-decider; a phase error determining section, for determining said phase error in accordance with the real part and the imaginary part of the phase error extracted by the phase error complex value extracting section; and a time delay feeding back section, for delaying said phase error by N number of symbols and feeding back the delayed phase error to said pre-decider, wherein N is an integer greater than 1. | 06-04-2009 |
20090142076 | Frequency offset compensating apparatus and method, and optical coherent receiver - The present invention relates to a frequency offset compensating apparatus and method, and an optical coherent receiver. The optical coherent receiver includes a front end processor and a frequency offset estimator, of which said front end processor converts an inputted optical signal into a base band digital electric signal, and said frequency offset estimator estimates a phase offset change introduced by a frequency offset in said base band digital electric signal; said frequency offset compensating apparatus comprises an M output integrator, for integrating the phase offset change introduced by the frequency offset to acquire M inverse numbers of the phase offset introduced by the frequency offset, where M is an integer greater than 1; a series-parallel converting device, for dividing said base band digital electric signal into M sub base band digital electric signals; M complex multipliers, for constructing the corresponding inverse numbers in the M inverse numbers to be complex numbers, and multiplying them with the corresponding sub base band digital electric signals in the M sub base band digital electric signals; and a parallel-series converting device, for converting the M sub base band digital electric signals multiplied by said complex multipliers into a base band electric signal. | 06-04-2009 |
20090245815 | Apparatus and method for frequency offset monitoring used in digital coherent optical receiver - The present invention discloses a frequency offset detecting apparatus and method for use in a digital coherent optical receiver. The digital coherent optical receiver comprises: a front-end processing section for generating a digital baseband electric signal; an equalizer for performing equalized filtering on the digital baseband electric signal; and the frequency offset detecting apparatus for detecting frequency offset contained in the digital baseband electric signal or frequency offset contained in a signal outputted by the equalizer; wherein the frequency offset detecting apparatus comprises an argument difference obtaining unit, a first subtracter, a second subtracter, a quantizer and an averager, of which the argument difference obtaining unit obtains an argument difference of adjacent symbols in a signal inputted therein; the first subtracter subtracts an output of the averager from the argument difference obtained by the argument difference obtaining unit; the quantizer performs uniform quantization with predetermined intervals on an output of the first subtracter; the second subtracter subtracts an output of the quantizer from the argument difference obtained by the argument difference obtaining unit; and the averager averages an output of the second subtracter. | 10-01-2009 |
20100002810 | ADAPTIVE OPTIMIZATION METHOD AND APPARATUS FOR AVERAGE LENGTH - The invention provides an average length adaptive optimization method and apparatus. An adaptive optimization method for the average length used for phase recovery comprising: a residual phase difference calculation step, for receiving a current phase of a digital symbol obtained by phase recovery and a data modulation phase of the digital symbol obtained by data recovery, and calculating a residual phase difference of the digital symbol, which is a difference between the current phase and the data modulation phase of the digital symbol; a residual phase difference auto-correlation value calculation step, for calculating an auto-correlation value of the residual phase difference with displacement m, wherein −10≦m≦10, and m is an integral; an optimization step, for optimizing the average length based on the residual phase difference auto-correlation value. | 01-07-2010 |
Patent application number | Description | Published |
20080204784 | MULTIFUNCTION IMAGE PROCESSING APPARATUS AND METHOD OF CONTROLLING THE MULTIFUNCTION IMAGE PROCESSING APPARATUS - A multifunction image processing apparatus having a plurality of functions including at least an image transmission function includes a job execution unit executing a job for any of the functions; an output unit outputting result information after execution of a job for the image transmission function, the result information containing information indicating a result of the execution; a macro execution unit causing the job execution unit to execute a job on the basis of macro data indicating the at least one of the plurality of functions and order of executing the at least one of the plurality of functions; and a control unit causing the output unit not to output the result information after the job is executed if the job is for executing the image transmission function and the macro data indicates that there is a function to be executed after the execution of the image transmission function. | 08-28-2008 |
20100122319 | INFORMATION PROCESSING SYSTEM, INFORMATION PROCESSING APPARATUS AND INFORMATION PROCESSING METHOD - A system includes a web server and an apparatus with a web browser configured to display an operation screen provided by the web server. The apparatus authenticates a user and transmits authentication information to the web server when the user is authenticated and requests the operation screen which is to be displayed on the web browser. The web server determines whether the authentication information has been received from the apparatus when the operation screen is requested and transmits the operation screen to the apparatus when it is determined that the authentication information has been received from the information processing apparatus as a result of the determination. | 05-13-2010 |
20110004874 | INFORMATION PROCESSING APPARATUS, METHOD OF CONTROLLING THEREOF, AND COMPUTER-READABLE STORAGE MEDIUM STORING PROGRAM THEREFOR - An application program or an extended application program is installed that extends the functionality of this application program. If the application program is installed, a license file used in this application program is stored in a storage unit. If the extended application is installed, then control is executed so as to install the extended application using the license file stored in the storage unit and used in installing the application program corresponding to the extended application program. | 01-06-2011 |
20110033040 | IMAGE PROCESSING APPARATUS AND CONTROL METHOD THEREOF - An image processing apparatus includes a determination unit configured to determine whether secret information that should not be transmitted to a web server is contained in an HTML file provided by a web server. A web browser does not transmit the secret information determined by the determination unit to the web server. A job control unit executes a device function using the secret information that is not transmitted to the web server according to determination by the determination unit. | 02-10-2011 |
20110279846 | INFORMATION PROCESSING APPARATUS, AND CONTROL METHOD AND STORAGE MEDIUM THEREFOR - An information processing apparatus capable of preventing processing of a job which is in execution from being interrupted, even if a user's screen transition operation is performed while the job is being executed and capable of preventing the job which is being processed from staying in the information processing apparatus. If it is determined that a job is in an in-processing state when a user's screen changeover operation is accepted, a browser of the information processing apparatus causes a display unit to display, on the foreground, an operation screen other than an operation screen associated with the job. | 11-17-2011 |
20120226990 | INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING SYSTEM, METHOD FOR CONTROLLING INFORMATION PROCESSING APPARATUS, AND STORAGE MEDIUM - An information processing apparatus includes a web browser configured to receive screen data from a web server on a network and display a screen based on the screen data. The information processing apparatus stores a script to be used in rewriting the screen data received by the web browser, and executes generation of a file and upload of the generated file according to a user's instruction issued via a screen displayed based on the rewritten screen data after the screen data is rewritten with use of the script. | 09-06-2012 |
20120268768 | INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING SYSTEM, CONTROL METHOD THEREFOR, AND STORAGE MEDIUM - In an information processing system of the invention, when authentication using authentication information from a Web browser of an MFP succeeds, a server generates a session ID, and transmits screen information added with the session ID to the Web browser. The Web browser accepts an operation through an operation screen displayed based on the screen information received from the server, and transmits its operation content to the server. The server transmits, to a service provider of the MFP, a request for executing a job corresponding to the operation content, in which a session ID is designated. Upon completion of execution of the job, the service provider transmits, to the server without intervening the Web browser, completion information indicating the execution result and added with the session ID. | 10-25-2012 |
20120314245 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING SYSTEM, METHOD FOR CONTROLLING THE SAME, AND STORAGE MEDIUM THEREFOR - An image processing apparatus for using an external service provided by at least one external server. The image processing apparatus includes a web browser, a reception unit, a web server unit, a display control unit, and a communication control unit. The reception unit receives service information transmitted by the at least one external server. The web server unit generates screen information for displaying an operation screen on the web browser based on the service information received by the reception unit. The display control unit displays the operation screen on the web browser based on the screen information generated by the web server unit. The communication control unit transmits and acquires image data to/from the at least one external server in response to a user instruction input via the operation screen displayed on the web browser. | 12-13-2012 |
20130132599 | INFORMATION PROCESSING APPARATUS, METHOD FOR CONTROLLING INFORMATION PROCESSING APPARATUS, AND STORAGE MEDIUM - An information processing apparatus includes a web browser configured to receive from the server, an HTTP response including a first script in which a procedure for using a web service is described and a second script in which a procedure for returning a result of the web service to a server is defined, and an HTTP server configured to perform processing as a web service provided by the information processing apparatus according to execution of the first script by the web browser, and call the second script for transmitting the result of the web service to the server. The web browser performs control to transmit the result of the web service to the server according to calling of the second script by the HTTP server. | 05-23-2013 |
20130208310 | INFORMATION PROCESSING SYSTEM, SERVER, CONTROL METHOD, AND STORAGE MEDIUM - A server accepts a control request for an MFP from a mobile terminal via Internet, and executes control processing for the MFP that functions as a fax device via Internet in response to the accepted control request. Also, the server acquires information addressed to the mobile terminal, which has been received from the fax device to the MFP, from the MFP via Internet and register the acquired information. Then, the server transmits information addressed to the registered mobile terminal to the mobile terminal via Internet. | 08-15-2013 |