Projection type display device and operation assistance method
First Claim
1. A projection type display device comprising:
- a first optical modulation unit that spatially modulates light emitted from a first light source unit in accordance with image information;
a first transmitter that inputs the image information into the first optical modulation unit;
a first projection unit that projects the light spatially modulated by the first optical modulation unit to a projection surface disposed on a windshield of a vehicle;
a first processor configured to perform as;
a first image information generation unit that generates the image information; and
a first abnormality sensing unit that senses abnormality in the first optical modulation unit, wherein the abnormality in the first optical modulation unit is determined when a degree of match between a calculated projected image information of the first optical modulation unit and the imaqe information generated from the first image information generation unit is less than or equal to a threshold; and
a first control unit thatstops at least one of the first optical modulation unit or the first light source unit when the first abnormality sensing unit senses abnormality in the first optical modulation unit,determines whether or not the image information generated by the first image information generation unit includes image information which calls attention of an operator of the vehicle to a field of view in a travelling direction of the vehicle, wherein the image information which calls attention of the operator of the vehicle to the field of view in the travelling direction of the vehicle is generated due to at least one of an obstacle and a dangerous object in the travelling direction of the vehicle,produces a first output for calling attention of the operator to the field of view when the image information includes the image information calling attention, andproduces no first output for calling attention of the operator to the field of view when the image information does not include the image information calling attention,wherein the first control unit displays, on a display device mounted in the vehicle, an icon calling attention and a message calling attention as part of the first output for calling attention,wherein the display device is a projection type display device comprising;
a second optical modulation unit that spatially modulates light emitted from a second light source unit in accordance with image information;
a second transmitter that inputs the image information into the second optical modulation unit;
a second projection unit that projects the light spatially modulated by the second optical modulation unit to the projection surface disposed on the windshield of the vehicle;
a second processor configured to perform as;
a second image information generation unit that generates the image information; and
a second abnormality sensing unit that senses abnormality in at least one of the second optical modulation unit or the second transmitter; and
a second control unit that stops at least one of the second optical modulation unit or the second light source unit when the second abnormality sensing unit senses abnormality in at least one of the second optical modulation unit or second the transmitter, determines whether or not the image information generated by the second image information generation unit includes image information which calls attention of the operator of the vehicle to the field of view in a travelling direction of the vehicle, produces a second output for calling attention of the operator to the field of view when the image information includes the image information calling attention, and produces no second output for calling attention of the operator to the field of view when the image information does not include the image information calling attention.
1 Assignment
0 Petitions
Accused Products
Abstract
Provided are a projection type display device and an operation assistance method that enable an operator to enjoy an operation assistance function even in the case of occurrence of abnormality in an optical modulation unit or an image information input unit during operation of a vehicle. A system control unit 47 of a HUD, if sensing abnormality in an optical modulation device 44 and a drive unit 45, stops a light source unit 40 and, furthermore, in the case of image information generated by a projected image information generation unit 52 including image information that calls attention of the operator to the front field of view, displays an alert image based on the image information on a liquid crystal display device 61 in a meter cluster.
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Citations
12 Claims
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1. A projection type display device comprising:
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a first optical modulation unit that spatially modulates light emitted from a first light source unit in accordance with image information; a first transmitter that inputs the image information into the first optical modulation unit; a first projection unit that projects the light spatially modulated by the first optical modulation unit to a projection surface disposed on a windshield of a vehicle; a first processor configured to perform as; a first image information generation unit that generates the image information; and a first abnormality sensing unit that senses abnormality in the first optical modulation unit, wherein the abnormality in the first optical modulation unit is determined when a degree of match between a calculated projected image information of the first optical modulation unit and the imaqe information generated from the first image information generation unit is less than or equal to a threshold; and a first control unit that stops at least one of the first optical modulation unit or the first light source unit when the first abnormality sensing unit senses abnormality in the first optical modulation unit, determines whether or not the image information generated by the first image information generation unit includes image information which calls attention of an operator of the vehicle to a field of view in a travelling direction of the vehicle, wherein the image information which calls attention of the operator of the vehicle to the field of view in the travelling direction of the vehicle is generated due to at least one of an obstacle and a dangerous object in the travelling direction of the vehicle, produces a first output for calling attention of the operator to the field of view when the image information includes the image information calling attention, and produces no first output for calling attention of the operator to the field of view when the image information does not include the image information calling attention, wherein the first control unit displays, on a display device mounted in the vehicle, an icon calling attention and a message calling attention as part of the first output for calling attention, wherein the display device is a projection type display device comprising;
a second optical modulation unit that spatially modulates light emitted from a second light source unit in accordance with image information;
a second transmitter that inputs the image information into the second optical modulation unit;
a second projection unit that projects the light spatially modulated by the second optical modulation unit to the projection surface disposed on the windshield of the vehicle;
a second processor configured to perform as;
a second image information generation unit that generates the image information; and
a second abnormality sensing unit that senses abnormality in at least one of the second optical modulation unit or the second transmitter; and
a second control unit that stops at least one of the second optical modulation unit or the second light source unit when the second abnormality sensing unit senses abnormality in at least one of the second optical modulation unit or second the transmitter, determines whether or not the image information generated by the second image information generation unit includes image information which calls attention of the operator of the vehicle to the field of view in a travelling direction of the vehicle, produces a second output for calling attention of the operator to the field of view when the image information includes the image information calling attention, and produces no second output for calling attention of the operator to the field of view when the image information does not include the image information calling attention. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification