DISPLAY CONTROL DEVICE

• US 20160041732A1
• Filed: 03/27/2014
• Published: 02/11/2016
• Est. Priority Date: 04/05/2013
• Status: Active Grant

• Current Assignee: DENSO Corporation
• Original Assignee: DENSO Corporation
• Inventors: YAMADA, Kazunao, ITOU, Masakazu
• Granted Patent: US 10,372,311 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 3/0481 based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance
• CPC Class Codes: G06F 3/0482 Interaction with lists of selectable items, e.g. menus
• CPC Class Codes: G06F 3/04845 for image manipulation, e.g. dragging, rotation, expansion or change of colour
• CPC Class Codes: G06F 9/451 Execution arrangements for user interfaces

Abstract

A display control device includes a sift portion that sifts a transition request event stored in a queue. The sift portion monitors the queue. When the queue stores several transition request events corresponding to the same type of screen-image after transition, the sift portion retains the most recent one of the transition request events and discards the other transition request events corresponding to the same type of screen-image after transition. This can decrease transition request events stored in the queue compared to a case of not sifting transition request events and reduce a possibility of generating a delay. The sift portion does not sift a transition request event that transitions to a different type of screen-image. This can display the type of screen-image a user intends to display based on his or her manipulation.

Claims

1. A display control device comprising:

an input acceptance portion that accepts a user manipulation input in order to transition a screen-image displayed on a screen of a display device to another type of screen-image, the display device being configured to display a plurality of types of screen-images;

a queue that stores a transition request event to allow a screen-image to transition to a screen-image corresponding to a manipulation input accepted by the input acceptance portion;

a screen-image processing portion that transitions a screen-image based on the transition request event; and

a sift portion that sifts the transition request event stored in the queue, wherein, when the queue stores a plurality of the transition request events corresponding to the same type of screen-image after transition, the sift portion retains one of the plurality of the transition request events and discards the other transition request events corresponding to the same type of screen-image after transition.

2. The display control device according to claim 1,

wherein, when the queue stores the plurality of the transition request events corresponding to the same type of screen-image after transition, the sift portion retains a most recent one of the plurality of the transition request events and discards the other transition request events corresponding to the same type of screen-image after transition.

3. The display control device according to claim 1,

wherein the input acceptance portion accepts the user manipulation input to change a display on a same type of screen-image;

wherein the queue stores a function execution event that changes a display on a same type of screen-image in response to the manipulation input accepted by the input acceptance portion;

wherein the screen-image processing portion changes display of the screen-image based on the function execution event; and

wherein the sift portion discards a function execution event in any one of cases where the function execution event arrives while a transition request event is performed and where the function execution event arrives later than a transition request event already stored in the queue.

4. The display control device according to claim 3,

wherein the function execution event performs at least one of increasing a scale of the display of the screen-image, reducing a scale of the display of the screen-image, and scrolling the screen-image.

5. The display control device according to claim 1,

wherein the input acceptance portion accepts the user manipulation input via a touch panel;

and

wherein the sift portion discards a transition request event the input acceptance portion accepts via the touch panel in any one of cases where the transition request event is accepted while another transition request event is performed and where the transition request event is accepted later than a transition request event already stored in the queue.

6. The display control device according to claim 1, comprising:

an event generation portion that generates an event the screen-image processing portion performs,

wherein the event generation portion generates an input event to determine a process content of the user manipulation input accepted by the input acceptance portion;

wherein the queue stores the input event;

wherein the screen-image processing portion performs the input event to determine a process content of the user manipulation input;

wherein the event generation portion generates the transition request event based on the process content and stores the transition request event in the queue; and

wherein, when the queue stores the plurality of the transition request events corresponding to the same type of screen-image after transition, the sift portion retains a most recent one of the plurality of the transition request events and discards the other transition request events corresponding to the same type of screen-image after transition.

7. The display control device according to claim 6,

wherein, when the input acceptance portion accepts the user manipulation input, the event generation portion responds to the manipulation input to generate a transition request event, a transition destination screen-image of the generated transition request event has a one-to-one relationship with the manipulation input, and, when the queue stores a plurality of input events generated based on the manipulation input, the sift portion retains a most recent one of duplicate input events and discards the other input events.