`Valeo v. Magna
`IPR2015-____
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`VALEO EX. 1010_001
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`VALEO EX. 1010_002«
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`VALEO EX. 1010 002
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`VALEO EX. 1010_002
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`VALEO EX. 1010_003
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`VIDEO DISPLAY CONTROL SYSTEM FOR A
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`MOTOR VEHICLE
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`The present invention relates to a television
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`monitor system with a display provided in a motor vehicle,
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`and more particularly to a system for controlling the
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`display of the monitor system.
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`A CRT (Cathode—Ray—Tube)
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`display may be provided in a motor vehicle for receiving
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`television broadcasting, reproducing videotapes and
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`displaying a road map and traffic information around the
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`area where the vehicle is operating using computer graphics
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`and an image output device. Further, if a television camera
`is installed on the vehicle for monitoring the rearward view
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`from the vehicle, this view may be displayed onthe display
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`as a substitute for a rearview mirror.
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`Japanese Utility Model Application Laid-open
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`59-91081 and Japanese Patent Application Laid—open 62-241747
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`disclose monitor display systems provided in a motor
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`vehicle.
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`In order to ensure safe driving of the vehicle,
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`these systems are provided with inhibiter means which
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`prevents the television system from operating when driving
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`the vehicle.
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`However, it is necessary to display map
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`information and the rearward view from the vehicle while
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`driving, and it is desirable to provide a clear picture on
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`the display.
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`VALEO EX. 1010_004
`VALEO EX. 1010_004
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`Visibility of the picture on the display depends
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`an intensity of the outside light which changes in
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`accordance the time of day and geographical location.
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`Consequently, whenever the intensity of the outside light
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`changes the driver must adjust the picture image on the
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`.display to control the luminance, contrast, and colour, by
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`operating respective adjusting knobs provided on the
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`display, which is troublesome for the driver.
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`The present invention seeks to provide a system
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`for controlling a monitor display system of a motor vehicle
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`in which a picture on a display is automatically and
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`properly controlled in accordance with intensity of outside
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`light of the vehicle.
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`According to the present invention,
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`there is
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`provided a system for controlling a video display system of
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`a motor vehicle including a television camera producing a
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`video signal and a monitor for displaying corresponding
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`images,
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`the system comprising:
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`sensing means for sensing ambient light levels
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`outside the vehicle and for producing corresponding output
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`signals;
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`adjustment circuits for adjusting the video
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`signal to different image conditions so as to control the
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`displayed image; and
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`means responsive to the output signals of the
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`sensing means for controlling the adjustment circuits so as
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`-
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`to optimise the image.
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`VALEO EX. 1010_005
`VALEO EX. 1010_005
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`In one embodiment of the present invention,
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`the
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`sensing means includes an automatic iris system provided in
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`the television camera.
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`The system further comprises an image output
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`device for providing vehicle operating information to be
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`‘displayed,
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`the selection means being arranged to allow
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`selection of an output signal of the image output device.
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`Some embodiments of the monitor will now be
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`described by way of example with reference to the
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`accompanying drawings,
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`in which:
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`Fig.1 is a block diagram showing a monitor
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`display system according to the present invention; and
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`Fig.2 is a perspective view of a display in the
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`system.
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`Referring to Figs. 1 and 2, a television set 2
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`for a monitor system according to the present invention is
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`mounted in an instrument panel of a motor vehicle.
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`The monitoring system has a television camera 1
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`with an automatic iris and is arranged to provide an outside
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`view from the vehicle. An image output device 3 is supplied
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`with a data signal from a road map which is previously
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`stored in a memory
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`VALEO EX. 1010_006
`VALEO EX. 1010_006
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`of a computer and with a location data signal obtained by a
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`gyrocompass, and produces an image signal of the road map
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`and an actual location of the vehicle composed by computer
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`graphics. A select switch 4 has a pair of fixed contacts X
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`and Y for manually selecting a video output of the
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`television camera 1 and an image output of the image output
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`device 3.
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`Further,
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`the system has four adjusting circuits 5, 6,
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`7
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`and 8 which are set to different levels in contrast,
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`luminance, and tone of the color of the picture on the
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`display of the television set 2. A Schmitt circuit 9 is
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`provided to receive an output signal of the automatic iris
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`la for producing an output pulse signal having a high level
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`when the outside light is intense.
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`AND gates 10, 11, 12,
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`13, 14 and 15, and a NOT gate 16 are provided for selecting
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`one of adjusting circuits 5, 6, 7, 8.
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`The television camera 1 produces a video signal which
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`is applied to the adjusting circuits 5 and 6.
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`The output
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`signal of the automatic iris 1a of the television camera 1
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`is applied to the Schmitt circuit 9.
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`If a signal from the
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`automatic iris la has higher voltage than a threshold value,
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`where the intensity of the outside light is high,
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`the signal
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`is applied to the Schmitt circuit 9. And the circuit 9
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`produces a high level signal.
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`If the output signal of the
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`automatic iris la represents a low intensity of the outside
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`VALEO EX. 1010_007
`‘ VALEO EX. 1010_007
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`light,
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`the Schmitt circuit 9 produces a signal having a low
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`level.
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`The high level signal from the Schmitt circuit 9 is
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`applied to the inputs of the AND gates 10 and 12, and to the
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`input of the NOT gate 16.
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`The image signal from the image output device 3 is
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`applied to the adjusting circuit 7 and 8, respectively.
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`Each of adjusting circuits 5 and 7 is set so as to
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`provide the clearest image on the display under the
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`conditions that the intensity of the outside light of the
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`motor vehicle is high. Thus,
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`the contrast,
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`luminance and
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`tone of the color of the picture is properly controlled
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`under the intense outside light.
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`On the other hand, each of
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`the adjusting circuits 6 and 8 is arranged so as to provide
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`the clearest image under the conditions that the outside of
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`the vehicle is dark. Thus,
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`the contrast,
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`luminance and tone
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`of the color of the picture in the dark outside state is
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`properly controlled.
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`A signal from the adjusting circuit 5 is applied to the
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`AND gate 10 and a signal from the adjusting circuit 6 is
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`applied to the AND gate 11. Output terminals of the AND
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`gates 10 and 11 are connected to the AND gate 14.
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`A signal from the adjusting circuit 7 is applied to the
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`AND gate 12 and a signal from the adjusting circuit 8 is
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`applied to the AND gate 13. Output sides of the AND gates
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`12 and 13 are connected to the AND gate 15. Output
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`terminals of the AND gates 14 and 15 are connected to
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`VALEO EX. 1010_008
`VALEO EX. 1010_008
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`the television set 2.
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`The contact X of the select switch 4
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`is connected to the AND gate 14 and the contact Y is
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`connected to the AND gate 15.
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`The operation of the monitor system is as follows.
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`When the select switch 4 selects the contact X for the video
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`output of the television camera 1, a video signal is applied
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`to the adjusting circuits 5 and 6, respectively.
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`If the
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`outside of the vehicle is light,
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`the output signal of the
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`Schmitt circuit 9 is applied to,the AND gate 10 and the
`output signal of the adjusting circuit 5 is applied to the
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`AND gate 10. Thus,
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`the AND gate 10 opens to produce a
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`signal which is applied to the AND gate 14. Since the AND
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`gate 14 is applied with a signal from the contact X,
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`the AND
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`gate 14 opens to produce a signal which is applied to the
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`television set 2.
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`The television set 2 operates to display
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`the outside View taken by the television camera 1.
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`If the outside of the vehicle is dark,
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`the Schmitt
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`circuit 9 produces a low level signal in accordance with the
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`signal from the automatic iris 1a, so that the AND gate 10
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`closes.
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`on the other hand the N01‘ gate 16 produces an output
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`signal because of the low level signal from the Schmitt
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`circuit 9, which is applied to the AND gate 11.
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`since the
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`video signal iron the television camera 1 is applied to the
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`AND gate 11 through the adjusting circuit 6, the AND gate 11
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`opens to produce a signal which opens the AND gate 11;.
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`VALEO EX. 1010_009
`VALEO EX. 1010_009
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`Thus,
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`the video signal is fed to the television set 2 via
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`the AND gate 14.
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`when the Contact Y of the select switch 4 is
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`selected for the image output of the image output device 3,
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`the image signal is applied to the adjusting circuits 7 and
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`,8, respectively.
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`If it is light outside the vehicle,
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`the
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`signal from the Schmitt circuit 9 is applied to the AND
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`gate12 to which the image signal from the image output
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`device 3 is also applied passing through the adjusting
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`circuit 7.
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`Thus,
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`the AND gate 12 opens to produce a signal
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`which is applied to the AND gate 15.
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`Since the signal from
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`the contact Y is applied to the AND gate 15,
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`the AND gate 15
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`opens to produce the image signal which is applied to the
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`television set 2.
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`The television set 2 then displays an
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`image such as the road map and the traffic information
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`composed by computer graphics.
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`If it is dark outside the vehicle,
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`the output
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`signal from the NOT gate 16 is applied to the AND gate 13.
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`The image signal from the image output device 3 is also
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`applied to the AND gate 13 passing through the adjusting
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`circuit 8. Thus,
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`the AND gate 13 opens to produce a signal
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`which is applied to the television set 2 via the AND gate
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`15.
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`when a television broadcast is received,
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`the
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`pictorial image on the television set is also automatically
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`controlled in accordance with the intensity of the outside
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`VALEO EX. 1010_0010
`VALEO EX. 1010_0010
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`light in a similar manner as aforementioned. That is to
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`«
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`say, an antenna, a tuner and a photoelectric sensor for
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`detecting the intensity of the outside light are provided on
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`the vehicle for receiving the television broadcast.
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`Two
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`control circuits are provided for controlling the image of
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`.the television set 2 dependent on the light level outside of
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`the vehicle.
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`The output of the photoelectric sensor is
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`applied to the Schmitt circuit 9.
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`one of the control
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`circuits is operated in accordance with a signal from the
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`schmitt circuit 9 or the NOT gate 16.
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`The display of the television set 2 may be a
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`liquid crystal display.
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`The system of the present invention
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`is particularly effective with a liquid crystal display.
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`In order to use the television set 2 for
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`displaying the rearward view of the vehicle instead of the
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`rearview mirror,
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`the image on the display is changed to a
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`monochrome image. Consequently, it is easy to sense the
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`distance between the vehicle and a following vehicle,
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`thereby improving the safety of driving, which is confirmed
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`by experiments.
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`In accordance with the principles of the present
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`invention,
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`the image on the display of the television set is
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`automatically controlled in response to the intensity of the
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`light outside the motor vehicle. Consequently,
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`the
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`driver need not manually adjust image conditions of the
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`display, so that the safety driving of the vehicle is
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`ensured.
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`”
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`VALEO EX. 1010_0011
`VALEO EX. 1010_0011
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`As described,
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`the television set 2 is installed
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`in console inside the vehicle as shown in Fig. 2, but it may
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`of course be installed wherever the driver can see it.
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`While the present preferred embodiment of the
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`present invention has been shown and described, it is to be
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`.understood that this disclosure is for the purpose of
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`illustration and that various changes and modifications made
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`within the scope of the appended claims.
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`VALEO EX. 1010_0012
`VALEO EX. 1010_0012
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`10
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`CLAIMS:
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`1.
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`A system for controlling a video display system
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`of a motor vehicle including a television camera producing a
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`video signal and a monitor for displaying corresponding
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`‘images,
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`the system comprising:
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`sensing means for sensing ambient light levels
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`outside the vehicle and for producing corresponding
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`output signals;
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`adjustment circuits for adjusting the video
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`signal to different image conditions so as to control the
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`displayed image; and
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`means responsive to the output signals of the
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`sensing means for controlling the adjustment circuits so as
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`to optimise the image.
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`2.
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`A system according to Claim 1 wherein,
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`the sensing means includes an automatic iris control system
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`in the television camera.
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`3.
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`A system according to Claim 1 wherein,
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`the selecting means comprises a Schmitt circuit, gates, and
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`a switch.
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`4.
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`A
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`A system according to Claim 1, further
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`comprising an image output device for providing vehicle
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`operating information to be displayed,
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`the selection means
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`being arranged to allow selection of an output signal of the
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`image output device.
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`5.
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`A system for controlling a graphic display
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`VALEO EX. 1010_0013
`VALEO EX. 1010_0013
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`/.9:-.-
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`system in a vehicle substantially as herein described with
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`reference to the accompanying drawings.
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`Published 1990 at".The PatentOffice. State House. 66971 High Holborn. London. WC1R 473?. Further copies maybe obtained from The Patent Office.
`Sales Branch. St. Mary Cray. Orpington. Kent BR5 3RD. Printed by Multiplex techniques 1rd‘ St. Mary CF85’. Kent. 0011- 1/87
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`VALEO EX. 1010_0014
`VALEO EX. 1010_0014