• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a system for controlling a color scheme on a screen, comprising a content management system (104) to provide an amount of content to be displayed on a screen (109), and a color calculation module (103) that is arranged to receive a control signal (102) corresponding to at least one color tone determined on the basis of information about time and / or location and arranged to define, based on said control signal, the color scheme to be used on the screen and to output the color scheme to the rendering means to render the amount of content so that the color scheme used for rendering is proportional to the at least one color tone.
    公开号:BE1022532B1
    申请号:E2015/5088
    申请日:2015-02-17
    公开日:2016-05-26
    发明作者:Doorselaer Geert Van
    申请人:Televic Rail Nv；
    IPC主号:
    专利说明:

    Field of Control of a Color Scheme on a Screen Field of the Invention The present invention relates generally to the field of color control systems used on a screen, the screen being arranged in, for example, a public display means of transport, a hospital, a school, hotel, care home, etc.
    Background of the Invention Today, in public transport, dynamic colors are used to create a certain "mood" in the vehicles, where "mood" is defined as a psychological or functional state suggested by using the lighting and screen colors. An example of this can be found in the Z 50000 trains for suburban train services in the Ile-de-France region around Paris.
    Passenger information systems on such vehicles are not equipped to follow this mood scheme. When LED screens are used, the colors (in most cases) are unchangeable, i.e. green or amber or yellow or red (solid) on a black background. In the case of TFT screens, the colors are defined in the content management system and are created independently of the train's mood colors.
    Systems are known in the prior art to adjust colors based on video content. For example US2009 / 175536 describes extracting and processing video content encoded in a rendered color space to be emulated by an ambient light source. Color information is extracted from a video signal and converted via unmerited color space using tristprimary matrices to form a second rendered color space to control the ambient light source.
    US2006 / 058925 proposes an online analysis of the metadata that is received together with a video signal. This analysis results in an adjustment of the lighting around the presentation device. One or more features of the metadata are filtered out and converted into light settings of one or more light elements, which in turn can contain one or more light sources.
    Patent application WO99 / 04562 relates to the processing of a video signal, depending on ambient light. The method comprises measuring an amount of ambient light to obtain a measured amount of ambient light and processing a video signal depending on the measured amount of ambient light. The video signal is essentially immediately affected when there is a large change in the measured amount of ambient light, while the video signal is affected by a change in scene when there is a small change in the measured amount of ambient light.
    The Garmin GPS 3400 Series owner's manual states that the brightness of the background is adjusted depending on whether it is day or night. Also automatically changes from background to sunrise and sunset, based on time. However, no use is made of control signals.
    Also in the document "Sun and Moon Rise / Set Tool for Auto Nuvi Units" which can be found on the Internet, a shift is possible from day to night background and vice versa. Here too, the background can be adjusted according to the sunrise and sunset.
    In the Windows operating system, a background can be adjusted according to the hour of the day.
    There is therefore a need for a solution where the limitations present in e.g. trains as described above are avoided or resolved so that the current mood of the train is reflected in the colors used at any time on the passenger information screens and other screens in the vehicle. An important limitation for such a solution is that all readability (contrast, etc.) requirements must be met on the screens.
    Summary of the Invention It is an object of embodiments of the present invention to provide a system for controlling color use on a screen, wherein the color selection is dependent on the environment in which the screen is used. It is a further goal to ensure that the proposed system meets the readability requirements.
    The above object is achieved by the solution according to the present invention.
    In a first aspect, the invention relates to a system for controlling a color scheme on a screen, comprising a content management system to provide an amount of content to be displayed on a screen, and a color calculation module arranged to receive a control signal corresponding to at least one color tone determined on the basis of time and / or location information and adapted to define on the basis of said control signal the color scheme to be used on the screen and to transfer the color scheme to the rendering means to render the amount of content so that the color scheme used for rendering is proportional to the at least one color tone.
    The proposed solution indeed makes it possible to adjust the colors used on a screen based on the colors (the "mood") used in the environment in which the screen is located. A typical environment is that of a train or other public transportation. The proposed system includes a color calculation module that receives a control signal corresponding to at least one color tone. This color tone was determined based on information about time and / or location and / or condition. Based on the control signal, the color scheme is defined to be used on the screen to render the amount of content. Since the control signal was derived taking into account the at least one color tone based on the time and / or location and / or state information, this information is also reflected in the final color scheme used for on-screen rendering.
    In a preferred embodiment, the system for controlling a color scheme comprises a color scheme control unit which is arranged to determine the at least one color tint based on time and / or location information.
    In a preferred embodiment, the color scheme control unit is arranged to output the control signal to the color calculation module.
    In another embodiment, the color scheme control unit is arranged to determine an indication regarding at least one saturation level of at least one color represented by the at least one color hue.
    In another preferred embodiment, the color scheme control unit is arranged to determine an indication of at least one brightness level of the at least one color represented by the at least one color hue.
    In another embodiment, the color scheme control unit is arranged to express the at least one color represented by the at least one color tone by means of coordinates in at least one of the following color spaces: CIE 1931 XYZ, CIERGB, CIELUV, CIELAB, sRGB, Adobe RGB, xvYCC, HSV, HSL, YCbCr, YPbPr.
    In another preferred embodiment, the color scheme control unit is arranged to determine an indication at a reference white point.
    In one embodiment, the content management system is part of a passenger information system and / or a seat reservation information system.
    In one embodiment, the control signal is derived from an indoor lighting system, for example, the indoor lighting system of a train or other means of transport.
    In one embodiment, the control signal further comprises an indication of time, on the basis of which the color calculation module can calculate a gradual transition from a current color scheme to another color scheme, this time indication providing information about the duration of the gradual transition and the "new" "color scheme is defined by the control signal as mentioned above.
    In one embodiment, said amount of content comprises at least one item to be displayed and an indication of whether the item is in the foreground or background, said foreground comprising the content containing the actual information for the passengers, such as text information or a clock logo, which generally comprises fewer pixels than the background, said background forming the scene on which the foreground is placed, usually comprising more pixels than the foreground.
    In one embodiment, said amount of content comprises at least two items to be displayed and an indication of whether the items form different foreground (foreground 1, foreground 2, etc.).
    In a specific embodiment, the color calculation module is integrated into the rendering means to render the amount of content. In an alternative embodiment, the color calculation module is a stand-alone unit that is arranged to receive input from the color scheme control unit and to send output to the screen controller.
    In a specific embodiment, the system further comprises the screen.
    In order to summarize the invention and the realized advantages over the prior art, certain objects and advantages of the invention have been described above. It goes without saying that all such objectives or advantages are not necessarily achieved according to one specific embodiment of the invention. Thus, for example, persons skilled in the art will recognize that the invention may be embodied or embodied in a manner that achieves or optimizes one advantage or group of benefits as described herein, without necessarily realizing other goals or benefits described or suggested herein. .
    The above and other aspects of the invention will become clear and further explained with reference to the embodiment (s) described below.
    Brief description of the drawings The invention will now be further described, by way of example, with reference to the accompanying drawings, in which like reference numerals refer to like elements in the various figures.
    FIG. 1 illustrates an embodiment of the system according to the invention.
    FIG. 2 illustrates a CIE xy chromaticity diagram.
    FIG. 3 illustrates another embodiment of the system according to the invention.
    FIG. 4 illustrates another embodiment of the system according to the invention.
    FIG. 5 illustrates another embodiment of the system according to the invention.
    FIG. 6 illustrates background (s) and background for a screen. Detailed Description of Illustrative Embodiments The present invention will be described with reference to specific embodiments and with reference to certain drawings, but the invention is not limited thereto, but is only limited by the claims.
    In addition, the terms first, second and so forth are used in the description and in the claims to distinguish between similar elements and not necessarily for describing a sequence, either in time, in space, in terms of importance or in any other way. It is to be understood that the terms used are interchangeable under proper conditions and that the embodiments of the invention described herein are capable of operating in sequences other than those described or illustrated herein.
    It is to be noted that the term "comprising" as used in the claims should not be interpreted as being limited to the means specified thereafter; it does not exclude other elements or steps. It must therefore be interpreted as a specification of the presence of the listed features, units, steps or components referred to, but it does not exclude the presence or addition of one or more other features, units, steps or components or groups thereof. Therefore, the scope of the expression "a device comprising means A and B" should not be limited to devices consisting only of parts A and B. It means that with regard to the present invention, the only relevant parts of the device A and B to be.
    References in this specification to "one embodiment" or "an embodiment" mean that a particular feature, structure, or feature described in connection with the embodiment is included in at least one embodiment of the present invention. Statements of the phrase "in one embodiment" or "in an embodiment" at different places in this specification do not necessarily all refer to the same embodiment, but it is possible. Furthermore, the specific features, structures or characteristics may be combined in any suitable manner in one or more embodiments, as will be apparent to those skilled in the art from this disclosure.
    In a similar manner, it should be noted that in the description of exemplary embodiments of the invention, various features of the invention are sometimes grouped in a single embodiment, figure, or description thereof to streamline the disclosure and understanding of one or more of the facilitate various inventive aspects. However, this method of disclosure should not be interpreted as an expression of an intention that the claimed invention requires more features than expressly stated in each claim. As shown in the following claims, the inventive aspects lie in less than all the features of a single preceding disclosed embodiment. Therefore, the claims that follow the detailed description are hereby explicitly included in this detailed description, wherein each claim stands on its own as a separate embodiment of the present invention.
    In addition, since some embodiments described herein include some, but not other, features included in other embodiments, combinations of features of different embodiments are intended to fall within the scope of the invention and to form different embodiments, such as will be understood by someone skilled in this field. For example, in the following claims, any of the claimed embodiments can be used in any combination.
    It should be noted that the use of particular terminology in describing certain aspects of the invention does not imply that the terminology herein is redefined to be limited to any specific features of the features or aspects of the invention with which that terminology is associated.
    In the description given here, numerous specific details are set forth. However, it is understood that embodiments of the invention can be worked out without these specific details. In other cases, well-known methods, structures and techniques were not shown in detail in order not to obstruct the understanding of this description.
    The present invention proposes a system in which the current mood of the train is reflected in the colors used on screens, e.g. passenger information screens, at any time, while the mood colors may shift, possibly gradually, from one color to another and while all readability requirements on the information screen are met. The invention is applicable to a wide range of screens, e.g. passenger information screens, seat reservation screens, fixed HMI screens (Human Machine Interface Display), mobile personal devices and the like. Screens based on different display technologies can also be used.
    In the description below, a scenario is considered in which the invention is applied to a train. In addition to public transport, the proposed solution can also be applied to environments other than public transport, such as care homes, hospitals, schools, hotels, ... In other words, any environment in which digital signage systems (with emphasis on textual data) ) are used.
    The "mood" is defined as a function of location and / or time, preferably both time and location. This means that, for example, the mood at the front of the train can differ from the mood at the back of the train and / or that the mood at the back of the train has a delay of a few seconds or minutes compared to the mood at the front of the train.
    The core of the system is a color calculation module that operates on the basis of a control signal. The control signal is "shaped" so that it corresponds to one or more color tones that were derived based on information about time and / or location and / or condition. Consequently, unlike prior art solutions, it is not the content that is displayed on the screens that determines which colors are used.
    A color scheme is the choice of colors used in the design of a collection of media. The use of a white background with black text is an example of an elementary and often used standard color scheme. An elementary color scheme uses two colors that match each other. More advanced color schemes contain different colors that are combined with each other, usually based on a single color.
    In a preferred embodiment of the invention, the system comprises a color scheme control unit (101) to generate a certain "mood." The color scheme control unit determines at least one color tint based on time / location information. In the embodiment of a system according to the invention shown in FIG. 1, another input of information is also illustrated. The other input is, for example, an alarm signal or a manual trigger (which provides direct input to the mood generator).
    The color scheme can be represented in various ways. The minimum information naturally identifies the at least one color tone that defines the mood. However, the color scheme can also be defined as two numbers, for example x and y, as defined by CIE1931, which define the hue and saturation of one color. Further useful information to define the color scheme can relate to brightness or, alternatively, Luv. Also a white point reference, defined by the color temperature in Kelvin or by other means such as x and y coordinates of CIE1931 is preferred information. A color scheme is usually interpreted as a choice of colors (multiple), useful information to define the color scheme can relate to more than one hue, more than one hue and saturation or more than one color. Different color spaces can be considered.
    The color scheme control unit 101 that creates at least one color tone suggesting the vote outputs a control signal 102 corresponding to said vote. The control signal contains the information to define the color scheme on the screen to render a quantity of content. The control signal 102 is fed to the color calculation module. In the embodiment of FIG. 1 different content management systems are displayed, one for each screen. A passenger information system is displayed, a reservation system on board a train and an entertainment system on board a train. The control signal is also received by an internal train lighting system 112 after it has passed through a light calculator 110. The mood therefore also determines the lighting in the area where the screens are located.
    Based on the received control signal (102), the color calculation module (103) determines the color scheme to be used on the screen (s) connected to the color calculation module to render a certain amount of content. The color scheme is then supplied (via signal 105) to the rendering means (107). The content is typically produced in the content management system (104). The actual rendering on the screens is therefore carried out based on the mood and the content.
    The content contains the text information, the character sets, the fonts, the layout, the clocks, etc. Reference is made to Figs. 6. The layout does not contain the colors, but for each asset (302, 303) (ie person or object) the layout is defined as "foreground" (302, 303), while the layer on which the "foreground" objects are placed is defined as "background" (301) without specifying the resulting color. More than one "foreground" can be defined, such as "Foreground1" (302) and "Foreground2" (303). Foreground (s) usually contain fewer pixels than the background. The background usually contains more pixels than the foreground (s) and generally the majority of the pixels of the screen (304).
    The background and foreground colors are dynamically calculated and adjusted. This calculation is also performed in the color calculation module.
    The calculation is based on a function based on the "mood" values and by working with brightness and saturation levels. The color calculation module calculates the foreground and background colors, taking into account the required contrast and optionally also the defined color temperature.
    An example of a calculation of foreground (s) and background color is given in the case that only the hue was indicated by the mood generator / color scheme control unit. The color triangle 201 in FIG. 2 includes all colors that can be displayed with a randomly selected color screen. The hue can be described by its dominant wavelength. The (monochromatic) color point 202 corresponds to the dominant wavelength of the hue defined by the color scheme control unit that generates the mood. A reference white point 207 is also displayed. The white point D65 is chosen here as an example. One possible implementation to get the foreground and background colors is the following: - Choose the reference white point with the highest possible brightness provided by the screen as the foreground color - Look in the CIE diagram for the intersection on the color triangle that includes all colors that can be displayed on the screen, from the straight line connecting the reference white point and the color point corresponding to the hue defined by the color scheme control unit - This intersection defines the color point of the background color - The brightness of the background color is defined by dividing the brightness of the foreground by a certain contrast figure (for example 20), since contrast is defined as (the ratio of) the brightness of the brightest color divided by the brightness of the least bright color.
    Another embodiment of the system of this invention is shown in FIG. 3. The color calculation module is now integrated in the rendering means (i.e. the block that handles both the template and color rendering). As before, the color calculation module receives control signal 102 corresponding to one or more color tones.
    FIG. 4 shows yet another embodiment. This time, the mood generator 101 receives trigger signals (time, location and optionally other information) from the content management system 104, in this specific case the on-board passenger information system. As in FIG. 3, the color calculation module is part of the rendering block 121. The control signal 102 is again fed to the color calculation module.
    FIG. 5 shows an embodiment in which the control signal (102) is not obtained in a direct manner from the color scheme control unit (101), but in an indirect manner. The signal output from the color scheme control unit is fed to the internal lighting system of the train, which outputs a signal 131 to a light signal converter (132) which produces the control signal 102 to the color calculation module.
    One application example is that in an underground metro the colors used on the screens reflect the above-ground environment at the location of the metro. When the metro runs under a park, a green color scheme is used; when the metro runs under a river, a blue color scheme is used.
    Another example is that in a metro the reference white point follows the time of day. A "colder" white point is used around noon (for example, D65); while a "warmer" white point is used during sunrise and sunset (for example, D50). The color scheme during the day is also adapted to the other information on the screen (background, foreground, other).
    Another example is that during peak hours soft and relaxing color schemes are used on the screens (and in the lighting scheme), while during off-peak hours and during holiday periods more bright and vivid color schemes are used on the screens (and in the lighting scheme) .
    Another example is that a different input or state, different from time and location, is included to create the mood. In the case of public transport, in this way a vehicle can be dynamically classified into different classes (sometimes called first class and second class, sometimes called golden seat and silver seat), each with a corresponding color scheme, which is typically also included in the marketing company is used. In an advantageous implementation, the control signal then contains two color tones, one of which is primarily related to time and location, and the other color tone is then primarily related to the class of (a part of) the vehicle.
    Another example is that a special state is taken into account to create the mood. This special condition can be an alarm status. In the case of public transport, different alarm levels can be defined, the lowest level being a normal condition, a higher level corresponding to the situation if one of the passengers has triggered an emergency signal and the highest status in case the train needs to be evacuated .
    Although the invention has been illustrated and described in detail in the drawings and foregoing description, such illustrations and descriptions are to be considered as illustrative or exemplary and not restrictive. The foregoing description explains certain embodiments of the invention in detail. It should be noted, however, that no matter how detailed the foregoing is contained in the text, the invention can be made in many ways. The invention is not limited to the disclosed embodiments.
    Other variations on the disclosed embodiments may be understood and performed by persons skilled in the art and by practicing the claimed invention, through a study of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps and the indefinite article "a" does not exclude a plural. A single processor or other unit can perform the functions of different items in the claims. The mere fact that certain measures are listed in mutually different dependent claims does not mean that a combination of those measures cannot be used to benefit. A computer program can be stored / distributed on a suitable medium, such as an optical storage medium or semiconductor medium supplied with or as part of other hardware, but can also be distributed in other forms, such as via the internet or other wired or wireless telecommunication systems. Any references in the claims should not be construed as limiting the scope.
    权利要求:
    Claims (15)
    [1]
    Conclusions
    A color scheme control system used on a screen, comprising - a content management system (104) to deliver an amount of content to be displayed on a screen (109), and - a color calculation module (103) that is arranged to receive a control signal (102) corresponding to at least one color tone determined on the basis of time and / or location information and arranged to define on the basis of said control signal the color scheme to be used on said screen and to output said color scheme to the rendering means to render said amount of content, such that said color scheme used for said rendering is proportional to said at least one color hue.
    [2]
    A color scheme control system according to claim 1, comprising a color scheme control unit (101) adapted to determine said at least one color shade based on said time and / or location information.
    [3]
    A color scheme control system according to claim 2, wherein said color scheme control unit is adapted to output said control signal to said color calculation module.
    [4]
    A color scheme control system according to claim 2 or 3, wherein said color scheme control unit is adapted to determine an indication of at least one saturation level of at least one color represented by said at least one color hue.
    [5]
    A color scheme control system according to any of claims 2 to 4, wherein said color scheme control unit is arranged to determine an indication of at least one brightness level of at least one color represented by said at least one color hue.
    [6]
    A color scheme control system according to any of claims 2 to 5, wherein said color scheme control unit is arranged to express said at least one color represented by said at least one color tone using coordinates in at least one one of the following color spaces: CIE 1931 XYZ, CIERGB, CIELUV, CIELAB, sRGB, Adobe RGB, xvYCC, HSV, HSL, YCbCr, YPbPr.
    [7]
    A color scheme control system according to any of claims 2 to 6, wherein said color scheme control unit is arranged to determine an indication about a reference white point.
    [8]
    A color scheme control system according to any of the preceding claims, wherein said content management system is part of a passenger information system and / or a seat reservation information system.
    [9]
    A color scheme control system according to any of the preceding claims, wherein said control signal is derived from an internal lighting system (112).
    [10]
    A color scheme control system according to any of the preceding claims, wherein said control signal further comprises an indication of time and wherein said color calculation module is adapted to calculate a gradual transition of a current color scheme based on said indication of time to a different color scheme.
    [11]
    A color scheme control system according to any one of the preceding claims, wherein said amount of content comprises at least one item to be displayed and an indication whether said item forms a foreground or a background, said foreground comprising factual information and said background forms a scene on which said foreground is placed.
    [12]
    A color scheme control system according to claim 11, wherein the amount of content comprises at least two items to be displayed and an indication whether said items form different backgrounds.
    [13]
    A color scheme control system according to any of the preceding claims, wherein said color calculation module is integrated in said rendering means to render said amount of content.
    [14]
    A color scheme control system according to any of claims 2 to 12, wherein said color calculation module is a stand-alone unit adapted to receive input from said color scheme control unit.
    [15]
    A system for controlling a color scheme according to any of the preceding claims, further comprising said screen.
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    同族专利:
    公开号 | 公开日
    EP2911389A1|2015-08-26|
    EP2911389B1|2018-05-30|
    BE1022532A1|2016-05-24|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    AT410888T|2002-07-04|2008-10-15|Koninkl Philips Electronics Nv|METHOD AND DEVICE FOR CONTROLLING AMBIENT LIGHT AND LIGHT UNIT|
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    法律状态:
    2019-11-20| MM| Lapsed because of non-payment of the annual fee|Effective date: 20190228 |
    优先权:
    申请号 | 申请日 | 专利标题
    EP14155700.9A|EP2911389B1|2014-02-19|2014-02-19|System for controlling a colour scheme on a display|
    EP14155700.9|2014-02-19|
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