WO2013182559A1

WO2013182559A1 - Display unit

Info

Publication number: WO2013182559A1
Application number: PCT/EP2013/061482
Authority: WO
Inventors: Marc Rawer
Original assignee: Johnson Controls Automotive Electronics Gmbh
Priority date: 2012-06-05
Filing date: 2013-06-04
Publication date: 2013-12-12

Abstract

The invention relates to a display unit (3), comprising a display element (3.1), a system controller (5), and interfaces and/or control components (S1 to Sn) coupled to the system controller in regard to data. According to the invention, at least a specified number of interfaces and/or control components (S1 to Sn) is designed as an integrated circuit.

Description

display unit

description

The invention relates to a display unit, in particular a

Remote display unit in a vehicle.

Usually in a vehicle in the dashboard display units, such as a screen, flat screen, touch screen or a so-called head-up display arranged. The respective display unit usually comprises a control unit and a display. To control the display, these and the control unit via a

Data connection coupled together. It will be about this

Data connection Video data and control data exchanged. For this purpose, the display unit typically comprises a digital video interface, a communication interface and a motor interface, which are connected via the

Control unit are connected to the display data technology. From US 7,734,852 B1 is a modular computer system having a serial connection port for coupling to a plurality of remotely located modules by means of a plurality of serial

High-speed connections, based on the Split-Bridge ™ technology known. The plurality of remote modules include a processor unit having core portions including a CPU, a data memory, a graphics card slot and an interface for connection to a bus system. Each module of the modular computer system appears on a parallel bus for the others as a connected device because the high-speed serial connections appear transparent. Object of the present invention is to provide a display unit, which is particularly simple and can be produced at low cost.

The object is achieved according to the invention with a display unit, which comprises a display element, a system controller and with this data-coupled control components and / or interfaces.

According to the invention, a predeterminable number of the control components and / or interfaces is designed as an integrated circuit.

In particular, the display unit comprises control components and / or interfaces, such as a digital bidirectional

High-speed data interface, a time control, a

Light control and a touch control.

Such a compact and integrated design of the control components of the display unit in a single integrated circuit is particularly inexpensive to manufacture. In addition, such a compact unit can be easily replaced in case of maintenance. The integrated circuit is an electronic circuit, which in particular has electronic and / or electrical components which form an arrangement as at least one circuit. By means of such a display unit, the number of interfaces and integrated circuits can be reduced, which in turn costs and weight, can be reduced by the fact that plug and / or cable can be saved in the vehicle network. Particularly preferred are the other interfaces and / or

Control components for displaying a digital video interface, a timer, a light controller, a motor driver interface and / or a touch controller. These interfaces and / or

Control components are referred to as an integrated circuit, i. H. as a

Circuit and formed particularly advantageous as a compact unit. In one embodiment of the display unit, it is connected via at least one control component and / or interface with at least one

Vehicle unit connected. This makes it possible in a particularly advantageous manner that functions and / or parameters of at least one

Vehicle unit can be displayed by means of the display element. Thus, a driver of a vehicle in which the display unit is arranged to be informed in the operation of the same by means of representations on the display element on the at least one vehicle unit. Advantageously, the display unit as interfaces and / or

Control components at least a digital video interface with a serial-to-parallel converter, a communication interface, an external user interface and / or a motor driver interface and an analog video interface with decoder on.

In this case, the video interface or the video interfaces are provided in a particularly advantageous manner for the exchange of video data, which can be output on the display, which is integrated in an instrument panel and / or in the backrest of a vehicle seat. Thus, moving pictures such as a movie can be outputted by the display.

Preferably, the display unit comprises a touch controller and a power supply controller for backlighting the display and / or a measurement circuit. The time control as a possible component of the display control unit is used in particular the control, for. As a so-called RSDS (Reduced Swing Differential Signaling) displays, which standard video protocols in display manufacturer-specific protocols or its temporal settings converted and includes calibration and boost algorithms, for example

White point calibration. In an advantageous embodiment, the system controller, the digital video interface, the motor driver interface, the timing controller, the light controller, the touch controller, the controller is or is

Power supply and the measuring circuit as an integrated circuit made on a separate semiconductor substrate. It is particularly advantageous to a single semiconductor substrate, which is the integrated circuit one, several or all of the above

Components has. In a particularly advantageous manner, the semiconductor substrate with the

integrated circuit formed as a self-sufficient electronic component, which can be integrated as needed in the display unit and removed again. Particularly preferably, the controller with power supply for the backlight comprises at least the processing of an ambient light detected in the environment, a detected display temperature and a detected temperature of the semiconductor substrate as a printed circuit board / board.

As a result, it is advantageously possible, the backlight

for example, depending on the environment detected

Ambient light adapt, whereby, for example, the risk of dazzling the driver and / or another vehicle occupant can be at least reduced by the display in an advantageous manner. Advantageously, the control with power supply includes a

Programmable PID control with hysteresis for controlling the brightness of the backlight and / or a driver circuit for controlling the display element and / or the backlight. Thus, z. B. advantageously a contrast between the

Background lighting and an information to be displayed on the display element to be set. Preferably, the motor driver interface, in particular a

Stepper motor interface, designed as a step control, which advantageously comprises two PWM registers that are time-triggered and event-controlled

Generate control signals.

With reference to the attached schematic figures

Embodiments of the invention explained in more detail. 1 shows schematically a display device comprising a control unit and a remotely located display unit, and

Fig. 2 shows a schematic block diagram of several components of

Display unit and its data connection.

Corresponding parts and components in the figures are provided with the same reference numerals.

Figure 1 shows a schematic representation of a display device 1, in particular for a vehicle. The display device 1 is in a manner not shown in a possible embodiment in

Armaturenbereich of the vehicle and / or arranged in a backrest of a vehicle seat. The display device 1 comprises a display control unit 2 and a display unit 3 arranged remotely with it

Display element 3.1 in the form of a screen, in particular one

Display screen, a display touch screen, an LED screen, an LCD, a TFT, an OLED screen or other suitable screen with or without backlight, for example by means of LED. The display control unit 2 and the display unit 3 are connected to each other via a data connection 4 for exchanging video data VD and control data SD. The data connection 4 is in particular a bidirectional high-speed

Data transmission using only one cable. Because only one cable is required, the cost and weight can be reduced, and effort in laying cables in the vehicle can be reduced. This type of data connection 4 is wired. Alternatively, the exchange of the video data VD and the control data SD can be wireless, in particular via a radio link. For wireless data transmission is or is preferably a loss of compression loss and / or a

loss-optimized protocol required. For real images, this is possible with MPG4, for example. Other images, such as human machine interfaces (HMI), require a different protocol.

The video data VD become unidirectional and the control data SD

exchanged bidirectionally. FIG. 2 shows in detail in block form the structure of the display unit 3.

The display unit 3 comprises the display element 3.1, a

System controller 5 and a plurality of data-coupled with the system controller 5 interfaces and / or control components S1 to Sn. The display unit 3 is via the data connection 4 u. a. connected to other vehicle units E1 to Em.

Thus, the display unit 3 comprises as interfaces and / or

Control components S1 to Sn at least one digital video interface S2 with a deserializer (serial-parallel converter), a

Communication interface S3, an external user interface S4 and / or a motor driver interface S5, in particular a

Stepper motor interface, and an analog video interface S1 with decoder. Furthermore, the display unit 3 includes a timer S6, an auxiliary voltage controller S7 (for LCDs or OLEDs), a

Touch control S8 and a controller 9 with power supply for a backlight 9 and a measuring circuit S10. According to the invention, it is provided that a plurality of the interfaces and / or control components S1 to Sn are designed as an integrated circuit, ie as a circuit.

In one possible embodiment, the system controller 5, the digital video interface S2, the communication interface S3, the

Motor driver interface S5, the timer S6, the auxiliary voltage controller S7, the touch control S8, the controller S9 with

Power supply and the measuring circuit S10 manufactured as an integrated circuit on a single semiconductor substrate and thus as a

independent electronic component formed.

The communication interface S3 can be wired or wirelessly designed as a bus or radio interface, wherein the wireless connection can also be part of the integrated circuit. In addition, the communication interface S3 can be connected via a connector 6 to further vehicle units E1 to Em, for example driver assistance systems, control units.

Furthermore, the display unit 3 comprises a power supply 7. The digital video interface S2 is as a conventional interface, for example, with a resolution of at least 800x480x24 bit, 60 Hz and includes a digital video connector 8. In addition, this may have an audio D / A conversion 15 with an audio connector 16.

The system controller 5 is designed for example as a 16-bit microcontroller and has, for example, 12-bit AD channels for incoming

Measuring signals such as temperature signals of the semiconductor substrate so the

Printed Circuit Board / Circuit Board, Measuring the

Supply voltage and / or the backlight as

Diagnostic channels on.

The timing S6 is used to control the display element 3.1 z. B. a so-called RSDS display with a resolution of at least 800x480x18 bit and includes conventional calibration and Boost-

Algorithms such. B. white point calibration. By means of the time control S6, temporal settings of standard video formats are temporal

Settings with regard to the specific manufacturer-typical formats of the respective display element 3.1 convertible.

The backlight control 9 9 includes at least the processing of the ambient light detected in the environment, the detected display temperature, and the detected PCB temperature. Further, the controller S9 includes a programmable controller (e.g., a PID controller) with hysteresis, particularly for controlling the brightness of the

Backlight 9 and a driver circuit for driving the backlight 9.

The touch controller S8 includes a plurality of AD channels for detecting a multi-touch unit 10 by which 10 or more objects can be detected and processed in parallel. The touch controller S8 includes this conventional filter components and filtering algorithms for identifying and eliminating, for example, water on the multi-key unit 10.

The motor driver interface S5 is designed as a step control and comprises, for example, two 16-bit PWM registers which generate time-triggered and event-controlled control signals, and a conventional 2 H bridge, for example for driving a low-current stepping motor.

In addition, the analog video interface S1 with decoder can be provided with an analog video connector 11, which does not constitute a physical connector, and can be part of the integrated circuit. For this purpose, the display device 1 is designed as a reversing camera with a display element 3.1 arranged in the vehicle. There is the

Possibility to feed a second video signal into the time control S6 and to combine it with a signal of the display control unit 2.

Furthermore, a switch panel 12 may be provided for operating the display unit 3. The switchboard 12 is a

mechanical keypad, for example a key matrix. A

Panel Detection 13 detects a key operation and serializes the acquired data, which is transmitted to the data bus via the data bus, for example, Serial Peripheral Interface and / or Inter-Integrated Circuit as a serial data bus system

System controller 5 are supplied. For this purpose, the switch panel 12 is coupled to the system controller 5 via the panel detection 13. In addition, a lighting control 14 is provided, by means of which the

Switch panel 12 independent of the controller S9 and the

Backlight 9 is backlit.

Characterized in that certain interfaces and / or control components S1 to Sn of the display unit 3 as a circuit, so an electronic

Circuit are formed, it is in a particularly advantageous manner, inter alia possible to reduce costs and weight of the display unit 3 and thus also of the display device 1.

It is possible that as an electronic circuit

trained interfaces and / or control components S1 to Sn depending on predetermined functions with respect to the display device 1 vary.

LIST OF REFERENCE NUMBERS

1 display device

2 display control unit

3 display unit

3.1 Display element

4 data connection

5 system controllers

6 connectors

7 power supply

8 digital video connector

9 backlight

10 multi-button unit

1 1 Analog video connector

12 switchboard

13 panel detection

14 Lighting control for switchboard

15 audio D / A conversion

16 audio connectors

S1 to Sn interfaces and / or control components E1 to Em vehicle units

VD video data

SD control data

Claims

claims

1 . Display unit (3) with a display element (3.1), a

System controller (5) and with this data technology coupled interfaces and / or control components (S1 to Sn),

characterized in that at least a predetermined number of the interfaces and / or control components (S1 to Sn) is formed as an integrated circuit.

2. Display unit (3) according to claim 1,

characterized in that the interfaces and / or

Control components (S1 to Sn) of the display unit (3) have a digital video interface (S2), a timer (S6), a

Light control (S7), a motor driver interface (S5) and / or a touch control (S6) are.

3. Display unit (3) according to claim 1 or 2,

characterized in that the display unit (3) via at least one control component and / or interface (S1 to Sn) with at least one vehicle unit (E1 to Em) is connected.

4. Display unit (3) according to one of the preceding claims,

characterized in that the display unit (3) as

Interfaces and / or control components (S1 to Sn) at least one digital video interface (S2) with a serial-parallel converter, a communication interface (S3), an external user interface (S4), a motor driver interface (S5) and / or an analog video interface ( S1) with decoder.

5. Display unit (3) according to one of the preceding claims,

characterized in that the display unit (3) has a Touch control (S8) and a controller (S9) with

Power supply for a backlight (9) of the

Display element (3.1) and / or a measuring circuit (S10).

6. Display unit (3) according to claim 5,

characterized in that the system controller (5), the digital video interface (S2), the motor driver interface (S5), the

Time control (S6), the light controller (S7), the

Touch control (S8), the controller (S9) and the

Measuring circuit (S10) are made as an integrated circuit on a separate semiconductor substrate.

7. display unit (3) according to claim 6,

characterized in that the semiconductor substrate is formed with the integrated circuit as a self-sufficient electronic component.

8. Display unit (3) according to claim 7

characterized in that the controller (S9) with

Power supply for the backlight (9) comprises at least the processing of an ambient light detected in the environment, a detected display temperature and a detected temperature of the semiconductor substrate.

9. Display unit (3) according to one of claims 2 to 8,

characterized in that the controller (S9) with

Power supply a programmable control with hysteresis for controlling the brightness of the backlight (9) and / or a driver circuit for controlling the

Display unit (3) and / or the backlight (9).

10. Display unit (3) according to one of claims 2 to 9,

characterized in that the motor driver interface (S5) is designed as a step control.