Dual-View Touch Menu Positioning for Driver and Passenger
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Solution Overview
Problem
Dual view displays require complex and costly methods to determine which user is performing touch operations on the touch panel, often necessitating unnecessary touch actions to access menu operations.
Innovation Solution
A display device with a touch detecting unit, touch-position detecting unit, display control unit, menu generating unit, and control unit that displays first and second top menus in different positions, enabling independent operations for drivers and passengers without the need for special sensors, allowing operations on touched menus while disabling others, and displaying menus in advance to reduce touch operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a sensor that detects the motion of an object is provided at a predetermined place in a vehicle cabin to detect from which of the driver's seat side and the passenger's seat side the touch panel is operated, then it can be determined which of a driver and a passenger has touched the touch panel, but special techniques need to be used, thereby increasing the costs
Solution Approach 1:
The patent creates a virtual copy of the touch panel interface by displaying a first touch panel image and a second touch panel image simultaneously on the display screen. Each touch panel image corresponds to a different user's operational area. When a touch is detected, the system determines which virtual touch panel image was touched and activates only the corresponding real touch panel functions, eliminating the need for physical sensors while maintaining accurate user identification
Solution Approach 2:
The patent adds a visual dimension to touch panel operation by superimposing multiple touch panel images on the display screen. This allows the system to determine which user is operating the touch panel by detecting which visual area was touched, converting a spatial/positional problem into a visual overlay problem that can be solved through image processing rather than physical sensing
2Adaptability or versatility
If a switch for adapting the operation of the touch panel to images viewed by a driver or a passenger is provided in the main unit, then the operation of the touch panel can be adapted, but the switch needs to be operated every time a driver or a passenger performs the operation, making the operation complicated
Solution Approach 1:
The patent performs preliminary action by displaying both the first touch panel image and the second touch panel image simultaneously on the display screen before any touch operation occurs. The system pre-configures the visual interfaces for both users, so when a touch is detected, the appropriate interface is already ready and active, eliminating the need for users to manually switch between modes
Solution Approach 2:
The system automatically determines which user is operating the touch panel by detecting the position of the touch relative to the displayed touch panel images. The system self-adjusts which touch panel operations are active based on the detected touch position, eliminating the need for manual switching and making the operation automatic and intuitive
3Measurement precision
If a first touch area is dedicated to a viewer A and a second touch area is dedicated to a viewer B on the touch panel, then it can be determined which touch area has been touched, but the touch panel needs to be touched once to display the operation menu, requiring an unnecessary, cumbersome touch operation
Solution Approach 1:
The patent displays the operation menu simultaneously with the touch panel images on the display screen before any touch operation is performed. The menu is pre-positioned in the display area, so when a user touches the touch panel, the corresponding menu options are already visible and ready for selection, eliminating the need for an initial touch to reveal the menu
Solution Approach 2:
The patent merges the display of touch panel images and operation menus into a single simultaneous display on the screen. Both the visual representation of the touch panel areas and the operational menu are presented together, allowing users to see both their operational context and available commands at the same time without requiring separate display actions
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables simplified and cost-effective independent operations for drivers and passengers by determining touch positions without sensors and displaying menus beforehand, reducing the number of touches required for menu operations.
Implementation Method 1
A plurality of optical parallax barriers 103 is provided at regular intervals in the switch liquid crystal 101. The parallax barriers 103 control the traveling directions of light beams (backlight for the liquid crystal) so as to separate the light beams into different light beams that reach a left-side viewing position 106 and a right-side viewing position 107.
Implementation Method 2
A touch panel is attached on the front face of a liquid crystal display panel, and operation control by touch can performed by touching a bar, a key switch, or the like, corresponding to a command to select an operation displayed on the liquid crystal display panel.
Data Source
AI summary
A display device may include a display unit, a touch detecting unit that detects a touch on the display unit, a touch-position detecting unit that detects a touch position on the touch detecting unit and outputs coordinate data of the position, a display control unit that causes the display unit to provide dual view display of an image and display a menu image, a menu generating unit that generates first and second top menus, and a control unit that performs control to display the top menus in different positions on a screen of the display unit, to determine, on the basis of the coordinate data from the touch-position detecting unit, which of the top menus has been touched, to enable operations on one of the top menus that has been touched, and to disable operations on the other one of the top menus.