Seiko Epson Corporation

Masatoshi Nakazawa

Atsushi Sakai

Masahiro Katagiri

Kei Jintsugawa

Hisashi Hirayama

Etsuro Furuta

Kumi Nishimura

Kumi Hata

While a specific application is running, a printer driver enables printing other data that is not data from the specific application. A dedicated driver (printer driver) that runs on a POS terminal occupies a communication port when receipt data is supplied from a POS application. The dedicated driver also sends print data generated based on the receipt data through the communication port to a POS printer. After continuing for a previously set time, the dedicated driver releases the communication port.

Printer driver and POS system

The effort required to develop a device object is reduced. A host computerhas objects including a printer COthat provides a POS application programwith an interface for each type of device, and a printer SOthat provides the printer COwith an interface to each device type and executes a process by device unit. A wrapper SOexecutes the process instead of the printer SOwhen at least one of the methods called by the printer COis called, and then calls a method of the printer SObased on the result of the executed process. When the printer COcalls other methods, the wrapper SOcalls the printer SOmethod.

Point of sale control device, control method, and storage medium storing a program for a point of sale device

In a communication environment in which multiple virtual port drivers use a single communication port, a communication control method enables a first virtual port driver and a second virtual port driver that is occupying the communication port to communicate through the same communication port. The communication control method includes executing a communication process in which the first virtual port driver emulates a specific communication port in communication with a first device driver to which the first virtual port driver corresponds. At least when the second virtual port driver occupies the communication port, the communication control method executes a communication process in which the first virtual port driver emulates, for the second virtual port driver, the second device driver to which the second virtual port driver corresponds.

Communication control method and control program

A device control system, a device control method, and a device control program for rendering a trace function as a function added to a service object that provides the software application with an interface to a particular device based on the Microsoft .NET Framework. The device control system has a service object, a service object for tracing, and renders a trace function in a service object that provides a device interface to a software application based on the .NET Framework. The trace function can be rendered in the service object based on whether the trace function is disabled or enabled without modifying the software application.

Device control system, device control method, and device control program

An image correction apparatus and method enable correcting an image so that the image is always discernible and at least text can be read regardless of user settings. A correction range that increases the gray level and a correction range that decreases the gray level are calculated for each image to calculate the correction range suitable for the particular image.

Growing community of inventors

Ueda, Japan

Masatoshi Nakazawa