Display control device, display control method, non-transitory recording medium, and projection device

• US 9,495,871 B2
• Filed: 04/23/2015
• Issued: 11/15/2016
• Est. Priority Date: 05/07/2014
• Status: Expired due to Fees

• Current Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Inventors: Mochizuki, Makoto, Emura, Koichi, Ohdachi, Eriko
• Primary Examiner(s): Wang, Jack K
• Application Number:
  US14/693,905
• Publication Number:
  US 20150325125A1
• Time in Patent Office: 572 Days
• Field of Search: 340/905, 340/441, 340/425.5, 340/901, 340/438
• US Class Current: 1/1
• CPC Class Codes: B60K 35/00 Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
• CPC Class Codes: B60K 35/20 Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
• CPC Class Codes: G08G 1/0962 having an indicator mounted inside the vehicle, e.g. giving voice messages
• CPC Class Codes: G08G 1/09626 where the origin of the information is within the own vehicle, e.g. a local storage device, digital map
• CPC Class Codes: G08G 1/096783 where the origin of the information is a roadside individual element

Abstract

A display control device causes a display unit to generate a first predetermined image representing a first presentation image that indicates a first speed limit. Change in a speed limit of a road where a vehicle travels from a first speed limit to a second speed limit different from the first speed limit is recognized. When the recognized change in the speed limit indicates decrease, the first predetermined image is switched by a first switching method so that a second predetermined image representing a second presentation image that indicates the second speed limit is generated. When the recognized change in the speed limit indicates increase, the first predetermined image is switched by a second switching method different from the first switching method so that the second predetermined image is generated.

Claims

1. A display control device comprising:

an input unit that receives speed limit information being information on a speed limit of a road; and

a controller that controls based on the speed limit information, a display generating a predetermined image and outputting the predetermined image to a display medium, the predetermined image representing a presentation image that indicates the speed limit when displayed on the display medium, wherein

the controller

causes the display to generate a first predetermined image representing a first presentation image that indicates a first speed limit,

recognizes change from the first speed limit to a second speed limit different from the first speed limit according to the received speed limit information,

after recognizing the change in the speed limit, causes the display to generate a second predetermined image representing a second presentation image that indicates the second speed limit and to switch display on the display medium from the first presentation image to the second presentation image, and

when the recognized change in the speed limit indicates decrease, causes the display on the display medium to be switched by a first switching method, and when the recognized change in the speed limit indicates increase, causes the display on the display medium to be switched by a second switching method different from the first switching method.

2. The display control device according to claim 1, wherein

the first switching method is a method to cause the display to display the second presentation image onto the display medium after a lapse of first time after causing the display to stop the display of the first presentation image on the display medium,

the second switching method is a method to cause the display to display the second presentation image onto the display medium after a lapse of second time after causing the display to stop the display of the first presentation image on the display medium, and

the second time is equal to or more than zero and less than the first time.

3. The display control device according to claim 1, wherein

the first switching method is a method in which the display causes the second presentation image to be displayed on the display medium by generating the second predetermined image of a second luminance different from a first luminance after stopping the display of the first presentation image on the display medium by stopping generating the first predetermined image of the first luminance,

the second switching method is a method in which the display causes the second presentation image to be displayed on the display medium by generating the second predetermined image of a third luminance different from the second luminance after stopping the display of the first presentation image on the display medium by stopping generating the first predetermined image of the first luminance, and

a difference between the first luminance and the second luminance is larger than a difference between the first luminance and the third luminance.

4. The display control device according to claim 3, wherein

the first luminance and the third luminance are equal to each other.

5. The display control device according to claim 1, wherein

the first switching method is a method in which the display causes the second presentation image to be displayed on the display medium by generating the second predetermined image so that a luminance gradually increases to a second luminance larger than a first luminance during third time after stopping the display of the first presentation image on the display medium by stopping generating the first predetermined image of the first luminance,

the second switching method is a method in which the display causes the second presentation image to be displayed on the display medium by generating the second predetermined image so that the luminance gradually increases to the second luminance during fourth time after stopping the display of the first presentation image on the display medium by stopping generating the first predetermined image of the first luminance, and

the fourth time is longer than the third time.

6. The display control device according to claim 1, wherein

the first switching method is a method in which the display causes the second presentation image to be displayed on the display medium by generating the second predetermined image so that a luminance gradually increases to a first luminance during fifth time after stopping the display of the first presentation image on the display medium by stopping generating the first predetermined image of the first luminance,

the second switching method is a method in which the display causes the second presentation image to be displayed on the display medium by generating the second predetermined image so that the luminance gradually increases to the first luminance during sixth time after stopping the display of the first presentation image on the display medium by stopping generating the first predetermined image of the first luminance, and

the fifth time is predetermined time that exceeds 20 milliseconds and the sixth time is longer than the fifth time.

7. The display control device according to claim 1, wherein

the first switching method is a method in which the second presentation image is displayed on the display medium by generating the second predetermined image of a first luminance after gradually decreasing a luminance of the first predetermined image to a predetermined luminance less than the first luminance during seventh time in stopping the display of the first presentation image on the display medium by stopping generating the first predetermined image of the first luminance,

the second switching method is a method in which the second presentation image is displayed on the display medium by generating the second predetermined image of the first luminance after gradually decreasing the luminance of the first predetermined image to the predetermined luminance less than the first luminance during eighth time in stopping the display of the first presentation image on the display medium by stopping generating the first predetermined image of the first luminance, and

the seventh time is predetermined time that exceeds 20 milliseconds and the eighth time is longer than the seventh time.

8. A display control device comprising:

an input unit that receives speed limit information and location information of a vehicle, the speed limit information being information on a speed limit of a section of a road; and

a controller that controls based on the speed limit information, a display generating a predetermined image and outputting the predetermined image to a display medium, the predetermined image representing a presentation image that indicates the speed limit when displayed on the display medium, wherein

the controller

when presence of the vehicle in a first section of the road is recognized according to the location information of the vehicle, causes the display to generate a first predetermined image representing a first presentation image that indicates a first speed limit of the first section,

when move of the vehicle from the first section into a second section is recognized according to the location information of the vehicle, recognizes change in the speed limit from the first speed limit to a second speed limit different from the first speed limit according to the speed limit information,

causes the display to generate a second predetermined image representing a second presentation image that indicates the second speed limit and to switch display on the display medium from the first presentation image to the second presentation image, and

when the recognized change in the speed limit indicates decrease, causes switch from the first presentation image to the second presentation image to be performed by a first switching method, and when the recognized change in the speed limit indicates increase, causes the switch from the first presentation image to the second presentation image to be performed by a second switching method different from the first switching method.

9. The display control device according to claim 8, wherein

the switch by the first switching method and the switch by the second switching method are performed when the vehicle moves from the first section into the second section.

10. The display control device according to claim 8, wherein

the switch by the first switching method and the switch by the second switching method are performed after a lapse of predetermined time after the move of the vehicle from the first section into the second section.

11. A projection device comprising:

an input unit that receives speed limit information being information on a speed limit of a road where a vehicle travels;

a display that generates a predetermined image based on the speed limit information and outputs the predetermined image to a display medium, the predetermined image representing a presentation image that indicates the speed limit when displayed on the display medium; and

a controller that controls the display, wherein

the controller

causes the display to generate a first predetermined image representing a first presentation image that indicates a first speed limit,

recognizes change in the speed limit of the road where the vehicle travels from the first speed limit to a second speed limit according to the received speed limit information,

after recognizing the change in the speed limit, causes the display to generate a second predetermined image as the predetermined image representing a second presentation image that indicates the second speed limit and to switch display on the display medium from the first presentation image to the second presentation image, and

when the recognized change in the speed limit indicates decrease, causes the display on the display medium to be switched by a first switching method, and when the recognized change in the speed limit indicates increase, causes the display on the display medium to be switched by a second switching method different from the first switching method.

12. A display control method of a display control device in a display system including an acquisition unit that acquires speed limit information being information on a speed limit of a road where a vehicle travels, and a display that generates a predetermined image representing a presentation image indicating the speed limit when displayed on a display medium and being based on the speed limit information and outputs the predetermined image to the display medium, the predetermined image representing a presentation image that indicates the speed limit when displayed on the display medium, the display control method comprising:

causing the display to generate a first predetermined image representing a first presentation image that indicates a first speed limit;

recognizing change in the speed limit of the road where the vehicle travels from the first speed limit to a second speed limit different from the first speed limit;

after recognizing the change in the speed limit, causing the display to generate a second predetermined image representing a second presentation image that indicates the second speed limit and to switch display on the display medium from the first presentation image to the second presentation image; and

when the recognized change in the speed limit indicates decrease, causing the display on the display medium to be switched by a first switching method, and when the recognized change in the speed limit indicates increase, causing the display on the display medium to be switched by a second switching method different from the first switching method.

13. A computer-readable non-transitory recording medium storing a display control program, wherein the display control program causes a computer to execute processes of:

causing the display to generate a first predetermined image as the predetermined image representing a first presentation image that indicates a first speed limit;

recognizing change in the speed limit of the road where the vehicle travels from the first speed limit to a second speed limit different from the first speed limit;

after recognizing the change in the speed limit, causing the display to generate a second predetermined image as the predetermined image representing a second presentation image that indicates the second speed limit and to switch display on the display medium from the first presentation image to the second presentation image; and

when the recognized change in the speed limit indicates decrease, causing the display on the display medium to be switched by a first switching method, and when the recognized change in the speed limit indicates increase, causing the display on the display medium to be switched by a second switching method different from the first switching method.