EP2215408B1 - Cooking hob with a household appliance display device - Google Patents

Description

The invention is based on a hob according to the preamble of claim 1.

From the publication US 2007/0164017 A1 a household appliance display device with a display unit is known, which is intended to represent cooking zones of a hob.

From the DE 199 03 300 A1 which is considered as a matter of prior art, a device for operating a kitchen electrical stove with several controllable via a control panel cooking devices is known, wherein a common to the serving devices screen of liquid crystals with a cover of a transparent, pressure-sensitive and at a compressive stress their electrical resistance changing foil is provided. The cover forms a connected via an evaluation circuit with a computer input unit with predetermined via a menu display, operable by a pressure load of the film buttons for reading a button associated program from a program memory for the control programs of the control panels of the individual devices in the computer. The computer controls a control device for the individual devices as a function of the pressurization of the programmatically determined by the displayed, associated control panel button areas. Among other things, cooking zones formed by a respective stove plate can be shown, wherein the individual plates with the respective actual temperature values can be seen in a display field.

From the DE 203 10 067 U1 is known a control bar for a cooking appliance. which comprises a character selection field in which individual characters are markable and selectable. In this case, a marked character is highlighted at least in size over unlabeled characters.

From the US Pat. No. 7,057,142 B1 a control system for a furnace with a display screen, a data input means and a calculation unit is known, wherein the calculation unit is adapted to send instructions to the display screen, to provide data from temperature sensors, to receive instructions from the data input means, and to control oven heating means. The calculation unit comprises a means for categorizing cooking programs at least as a function of a first criterion and a means for regulating the cooking program according to at least one second internal end criterion and according to a third external end criterion. In this case, the display screen is adapted to display the selected values of the criteria or the values of the criteria in the selection by the user at the same time, wherein a display range for the values of the second and the third criterion is provided to also display unelected criteria, so that the selected values are graphically readable. The display area is suitable for displaying a window adapted to a product type.

The object of the invention is in particular to provide a generic device with improved properties in terms of information presentation.

The object is achieved by the features of claim 1, while advantageous embodiments and modifications of the invention can be taken from the dependent claims.

The invention relates to a hob with at least one display unit which is intended to reproduce representations of the hob, wherein cooking zones are represented by graphics, as well as at least one control unit, which has at least one data collection.

It is proposed that the data collection comprises at least one amount of data which is provided to enlarge at least one of the graphics (18, 24, 18a, 24a) displayed by the display unit (10; 10a) in an operating mode and to reduce at least one other "Provided" should be understood in particular to be specially equipped and / or designed and / or programmed. A "control unit" is to be understood in particular as meaning a unit which has a computer unit or processor unit and / or a memory unit. In particular, at least the data collection is stored in the memory unit. In particular, a "graphic" is at least an image, a letter, a symbol, an image, a visualization and / or an outline. Particularly advantageous is the graphic associated with an object, which is in particular a cooking zone. In this case, the assignment of the graphic to the object is advantageously maintained when changing the representation of the graphic. The amount of data is advantageously provided to represent the entire graph changed in terms of at least one representation size. A "representation size" of a part of a graphic should in particular be understood to mean an extension length of the part in one of its extension directions. By representing a part of a graphic in terms of a displayed variable "changed", it should be understood, in particular, that the part is represented with a value of a representation variable that differs from a value of the representation variable in another representation of the part. With an embodiment according to the invention, an easily comprehensible display of information can be achieved.

The amount of data is intended to enlarge a symbol of a selected cooking zone and thereby highlight. This allows a high level of user comfort and a very simple operation can be achieved. In particular, the icon will be flashing, further highlighting the icon.

Furthermore, it is proposed that the amount of data is intended to represent at least one part of a graphic displayed by the display unit in an operating mode in a distorted manner. By making a part of a graphic "distorted", it should be understood, in particular, that in a comparison to another representation of the part, at least one proportion of the part is shown changed. A "proportion of the part" is in particular a ratio of two representation sizes of the part. As a result, a particularly high flexibility in the representation of the graph can be achieved.

Advantageously, the amount of data is provided to represent at least one of the display unit in an operating mode displayed position of two symbols changed relative to each other. In particular, a position of two symbols relative to one another is changed by changing a distance of the two displayed symbols or by changing a direction of a connecting line of the two center points of the symbols. By a "distance" of a first and a second symbol, in particular, the shortest link of a point of the first symbol with a Point of the second symbol to be understood. Hereby a compact display of the symbols can be achieved.

The data collection has at least the amount of data which in particular represents at least a quantity of image data, which in particular is a graphic. By "representing" an image data set as part of a graphic, it should be understood, in particular, that there is a device which can display the graphic by means of the image data set. Preferably, the amount of data includes image data. In this case, for example, image data for at least one graphic, which differ with respect to at least one representation variable of a part of the graphic, can be stored in the memory unit. This can be easily displayed a graph with a changed display size, with a computational effort can be avoided.

Alternatively or additionally, the data collection may have at least one amount of data corresponding to at least one software. By "software" is meant in particular at least one program. In particular, a program is a collection of instructions which are intended to be executed by at least one processor or a computing unit, and which in particular are combined into one unit and are intended to perform at least one task. The task may be control of the display unit. In a preferred embodiment of the invention, at least a portion of the data set is a presentation size changing program. A "display size change program" is to be understood in particular as meaning a program which is intended to enable a display of a displayed graphic with at least one changed display size. This allows a flexible variability of presentation sizes can be achieved and it can be saved storage capacity. For example, it is proposed that at least part of the data set is a distortion program. A "distortion program" is to be understood in particular as meaning a program which is intended to enable a display of a displayed graphic, which may be represented by an image data set, with at least one changed quotient of two presentation variables. In particular, at a transition from a representation of a graph in an output by the display unit for a comparison in a modified representation in a final size by the display unit, a representation of the graph in sizes that are between the starting and the final size possible. This allows the operator to perceive the resizing of the graphic.

Advantageously, the graphic has at least one cooking zone symbol. This can be an easy understandability of a display can be achieved. Preferably, at least one symbol is integrated in the cooking zone symbol, whereby displayed information can be assigned to a user in a particularly intuitive way.

The fact that the graphic represents at least one hob, a high clarity is achieved.

According to the invention, the amount of data is intended to be enlarged by at least two symbols displayed by the display unit in an operating mode, and at least one to be reduced in size. Thus, despite a constant display area with a high clarity, a symbol can be displayed very easily detected.

Furthermore, a display method is proposed in which at least two graphics displayed by a display unit in an operating mode are enlarged at least one and at least one other is reduced in size. According to the invention, an easily comprehensible information representation can be achieved.

Further advantages emerge from the following description of the drawing. In the drawings, embodiments of the invention are shown. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.

Fig. 1

eine Draufsicht auf ein Kochfeld,

Fig. 2

eine Draufsicht auf eine Anzeigeeinheit und eine Bedieneinheit,

Fig. 3

eine Draufsicht auf die Bedieneinheit und die Anzeigeeinheit mit einer vergrößerten Kochzonen-Grafik,

Fig. 4

die vergrößerte Kochzonen-Grafik nach der Auswahl einer Leistungsstufe,

Fig. 5

die Kochzonen-Grafik nach der Auswahl einer Leistungsstufe in einer Standardgröße,

Fig. 6

eine optionale Darstellung der Kochzonen-Grafik nach der Auswahl einer Leistungsstufe,

Fig. 7

die Kochzonen-Grafik bei einer Einstellung einer Kochzeit,

Fig. 8

die Kochzonen-Grafik nach einer Einstellung einer Kochzeit,

Fig. 9

eine Draufsicht auf die Bedieneinheit und die Anzeigeeinheit mit einer vergrößerten mittleren Kochzonen-Grafik, welche eine mittlere Kochzone symbolisiert,

Fig. 10

die vergrößerte mittlere Kochzonen-Grafik nach der Auswahl einer Leistungsstufe,

Fig. 11

die vergrößerte mittlere Kochzonen-Grafik nach der Auswahl einer Leistungsstufe bei einer aktiven Kochzonenerweiterung,

Fig. 12

die mittlere Kochzonen-Grafik nach der Auswahl einer Leistungsstufe in einer Standardgröße,

Fig. 13

eine optionale Darstellung der mittleren Kochzonen-Grafik nach der Auswahl einer Leistungsstufe,

Fig. 14

die mittlere Kochzonen-Grafik bei einer Einstellung einer Kochzeit,

Fig. 15

die mittlere Kochzonen-Grafik nach der Einstellung der Kochzeit,

Fig. 16

eine optionale Darstellung der mittleren Kochzonen-Grafik nach der Einstellung der Kochzeit,

Fig. 17

eine Draufsicht auf die Bedieneinheit und die Anzeigeeinheit mit einer Anzeige einer zu einer Kochzone gehörenden Restwärme,

Fig. 18

eine optionalen Anzeige einer zu der Kochzone gehörenden Restwärme,

Fig. 19

eine Draufsicht auf die Bedieneinheit und die Anzeigeeinheit mit einer vergrößerten, unteren Kochzonen-Grafik nach einer Aktivierung einer Booster-Funktion,

Fig. 20

die vergrößerte, untere Kochzonen-Grafik nach einer Auswahl einer Leistungsstufe,

Fig. 21

die untere Kochzonen-Grafik nach der Auswahl einer Leistungsstufe in einer Standardgröße,

Fig. 22

eine Draufsicht auf die Bedieneinheit und die Anzeigeeinheit mit der unteren Kochzonen-Grafik, welche einen Bratsensor-Betriebsmodus symbolisiert,

Fig. 23

die untere Kochzonen-Grafik nach einer Auswahl der zweiten Leistungsstufe in einer Standardgröße,

Fig. 24

eine Draufsicht auf die Bedieneinheit und die Anzeigeeinheit mit einer Darstellung eines Bedienmenüs und mit der unteren Kochzonen-Grafik, welche eine Programmierung symbolisiert,

Fig. 25

eine Draufsicht auf ein alternatives Ausführungsbeispiel eines Kochfelds,

Fig. 26

eine Draufsicht auf eine Anzeigeeinheit und einer Bedieneinheit des alternativen Ausführungsbeispiels und

Fig. 27

eine vergrößerte Kochzonen-Grafik des alternativen Ausführungsbeispiels.

Show it:

Fig. 1

a top view of a hob,

Fig. 2

a top view of a display unit and a control unit,

Fig. 3

a top view of the control unit and the display unit with an enlarged cooking zone graphics,

Fig. 4

the enlarged cooking zone graphic after selecting a power level,

Fig. 5

the cooking zone graph after selecting a power level in a standard size,

Fig. 6

an optional display of the cooking zone graphic after selecting a power level,

Fig. 7

the cooking zone graphics when setting a cooking time,

Fig. 8

the cooking zone graphic after setting a cooking time,

Fig. 9

a top view of the control unit and the display unit with an enlarged central cooking zone graphic, which symbolizes a central cooking zone,

Fig. 10

the enlarged central cooking zone graph after selecting a power level,

Fig. 11

the enlarged central cooking zone graph after selecting a power level for an active cooking zone extension,

Fig. 12

the average cooking zone graph after selecting a power level in a standard size,

Fig. 13

an optional representation of the average cooking zone graphic after selecting a power level,

Fig. 14

the middle cooking zone graph when setting a cooking time,

Fig. 15

the average cooking zone graph after setting the cooking time,

Fig. 16

an optional representation of the average cooking zone graphic after the cooking time has been set,

Fig. 17

a plan view of the operating unit and the display unit with an indication of belonging to a cooking zone residual heat,

Fig. 18

an optional indication of residual heat associated with the cooking zone,

Fig. 19

a top view of the control unit and the display unit with an enlarged, lower cooking zone graphics after activation of a booster function,

Fig. 20

the enlarged, lower cooking zone graph after selecting a power level,

Fig. 21

the lower cooking zone graph after selecting a power level in a standard size,

Fig. 22

a top view of the control unit and the display unit with the lower cooking zone graphic, which symbolizes a Bratsensor operating mode,

Fig. 23

the lower cooking zone graph after selecting the second power level in a standard size,

Fig. 24

a top view of the control unit and the display unit with a representation of a control menu and with the lower cooking zone graphic, which symbolizes a programming,

Fig. 25

a top view of an alternative embodiment of a hob,

Fig. 26

a plan view of a display unit and a control unit of the alternative embodiment and

Fig. 27

an enlarged cooking zone diagram of the alternative embodiment.

FIG. 1 shows a plan view of a cooking appliance 38 designed as a household appliance. The hob 38 has cooking zones 28 to 36 and a home appliance display device 40 with a display unit 10, an operating unit 42 and a control unit 12. The control unit 12 has a data collection 14 with a data set 16 which is provided to display at least one circular graphic 18 displayed by the display unit 10 in an operating mode with regard to at least one display variable 20 (FIG. FIG. 2 ).

The display unit 10 has a rectangular shape and is constituted by two hundred pixels in its longitudinal direction by one hundred and twenty-eight pixels in its width direction, dispense with the representation of the individual pixels. The display unit 10 is intended to reproduce representations of the cooktop 38, with the cooking zones 28-36 generally being represented by the graphic 18 and circular graphics 22, 24, 26, 27. In FIG. 2 Graphics 18, 22, 24, 26, 27 are consistent with illustrations 19, 21, 146, 148, 150 showing cooking zones 28 through 36 in an inactive state. Representations of the graphics 18, 22, 24, 26, 27, such. The illustrations 19, 21, 146, 148, 150 are included in the data set 16 in the form of image data. The corresponding to a representation of the graphic 18 Figure 19 is a symbol with a diameter 56 which corresponds to the representation size 20. If an operator selects the cooking zone 28 by means of a touch element 54 (FIG. FIG. 2 ) of the control unit 42, the graph 18 is shown changed by the fact that the cooking zone 28 symbolizes by a circular image 58 with a larger diameter compared to the diameter 56 becomes ( FIG. 3 ), whereby the symbol of the cooking zone 28 is highlighted. Since the display unit 10 has a display surface that is invariable in size, the remaining cooking zones 30 to 36 are now compared to the images 21, 146, 148, 150 (FIG. FIG. 2 ) are represented by circular illustrations 62 to 68 of reduced diameter. For this purpose, the representation of the hob 38 with the images 58 and 62 to 68 in the form of image data is stored in the data set 16 of the display unit 10 in Figure 3.

In FIG. 2 a graph 70 is shown which is formed by the graphics 18, 22, 24, 26, 27, and the hob 38 represents. Analog form in FIG. 3 FIGS. 58, 62, 64, 66, 68 together form a representation of the graphic 70, which likewise symbolizes the hob 38. Due to the operator selecting the cooking zone 28, a representation of the graphic 70 changes from that shown in FIG FIG. 2 can be seen, to the in FIG. 3 illustrated representation, which is given by a symbol 72 and a distortion of the representation of the graphic 70 in FIG FIG. 2 is. For example, the ratio of a length 74 to a width 76 of the graphic 70 differs from FIG FIG. 2 from a ratio of a length 78 to a width 80 of the graphic 70 in FIG FIG. 3 , This distortion creates space on the display surface of the display unit 10, which is used to display a thermometer symbol 84. The thermometer icon 84 symbolizes that the home appliance display 40 is in a temperature selection mode.

In FIG. 2 are a symbol 120 of the cooking zone 30 through the Figure 21 and a symbol 122 of the cooking zone 34 represented by the illustration 148. Both symbols 120, 122 have a circle as an outline. The symbols 120, 122 are spaced from each other by a distance 124. Following selection by the operator of the cooking zone 28, the symbols 120, 122 are represented by the illustrations 62 and 66 (FIGS. FIG. 3 ), which are reductions of Figures 21 and 148, and as well as these are stored as image data in the data set 16. Since the distance 126 of the images 62, 66 is greater than the distance 124, the display unit 10 after the selection of the cooking zone 28, the position of the symbols 120, 122 is changed relative to each other.

Further, the operator is prompted by the display of a touch element icon 86, which is integrated into the image 58, which has a cooking zone symbol, to set a power level for the cooking zone 28 by means of a symbolized touch element 82 of the control unit 42. If the operator follows this request, then a figure indicating the selected power level is integrated into the map 58, and in addition, a color of a circular area 59 of the image 58 symbolizing the cooking zone 28 is changed, resulting in a map 88 (FIG. FIG. 4 ). If no further adjustment is made, then the figure 88 automatically after an adjustable period of time, which is for example five seconds, to the extent of Figure 19 ( FIG. 2 ), which is shown in Figure 92 ( FIG. 5 ) results. Optionally, in an active state of the cooking zone 28 this also by a compared to the Figure 19 enlarged figure 94 symbolizes ( FIG. 6 ). In both variants, the touch element icon 86 is replaced by a bar icon 87, indicating that a selection of a power level has been made.

Furthermore, by a time-selection touch element 96 of the operating unit 42, a time-delay mode for the last activated cooking zone 28 can be selected. When an operator actuates the time-selection touch element 96, a map 98 representing the cooking zone 28 is compared to FIG Figure 19 ( FIG. 2 ) shown enlarged. By means of the touch element 82, the operator can set a cooking time 100, which is displayed integrated into the cooking zone symbol shown in FIG. 98 (FIG. FIG. 7 ). Optionally, then the cooking zones 28 to 36 again in a in FIG. 2 symbolized output quantity ( FIG. 8 ).

In an analogous way, a power level and a cooking time can be selected for the cooking zone 36 ( FIGS. 9 to 16 ). After a selection ( FIG. 9 ) of a power level of the cooking zone 36, this is indicated by a comparison with FIG. 150 (FIG. FIG. 2 ) enlarged, colored, and selected power level map 102 (FIG. FIG. 10 ) symbolizes. Here, the cooking zone 28 by a compared to the Figure 19 ( FIG. 2 ) shown in Figure 110, in which the selected power level of the cooking zone 28 and the cooking time set for the cooking stage is displayed. If, due to the size of a cookware placed on the cooking zone 36, a cooking zone extension 104 (of the hob 38) is automatically FIG. 1 ), this is indicated by a complete coloring of a picture 106 symbolizing the cooking zone 36 ( FIG. 11 ). If the cooking zone extension 104 is inactive, an outer area 108 of the image 102 symbolizing the cooking zone 36 remains un-colored both in a selected and in an unselected state of the cooking zone 36 (FIG. Figures 12 and 13 ). FIG. 14 Figure 27 shows a selection of a cooking time. The FIG. 15 is a representation of the hob 38, wherein the cooking zone 36 after selecting the cooking time is in an unselected state. FIG. 16 is an alternative representation of the hob 38 in this state.

If one of the cooking zones 28 to 36, such. B. the cooking zone 30, and turned off again after a certain period of operation, so that this cooking zone 30 has a residual heat, the residual heat is represented by a coloring of this cooking zone 30 symbolizing figure 112 ( FIG. 17 ). Optionally, the residual heat can additionally be illustrated by a letter integrated into a cooking zone symbolizing symbol 114 (FIG. FIG. 18 ).

The cooking zone 34 ( FIG. 1 ) has a booster function, which can be activated by means of a touch element 116 of the operating unit 42. If an operator initiates activation, the cooking zone 34 will be replaced by one in comparison to Figure 148 (FIG. FIG. 2 ) enlarged Figure 118 ( FIG. 19 ) and a representation of the hob 38 by the display unit 10 is distorted, leaving room for a boost symbol 119 on the display surface. After the cooking zone 34 has reached its maximum temperature, as described for the cooking zone 28, a power level can also be set for the cooking zone 34 ( Figures 20 and 21 ), which is analogous to that by the FIGS. 4 and 5 process described proceeds.

Further, the cooking zone 34 may be used in a fryer sensor mode of operation wherein a pyrometer 39 is extended from the hob 38 (see FIG FIG. 1 ). If the frying sensor operating mode is selected by means of a touch element 128, this is represented by a pan symbol 130 which is integrated into a picture 132 symbolizing the cooking zone 34 (FIG. FIG. 22 ). Further, the operator is prompted by three different bar symbols 134 integrated into the image 132 to select one of three possible power levels. A selection of the first power level by means of the touch element 82 is indicated by a coloring of the first bar symbol 134. Accordingly, a selection of the second and third power levels is displayed. After selecting a power level, cooking zone 34 is again displayed in its output, with the selected power level represented by bar symbols 134 ( FIG. 23 ).

The cooking zone 34 is also programmable. If such a programming is carried out by means of the operating unit 42, this is indicated by a symbol 136, which in an image 138 symbolizing the cooking zone 34 is shown ( FIG. 24 ). At the same time, the display unit 10 forms an operating menu 140, from which different, time-dependent performance characteristics are selectable, which are particularly suitable for certain dishes. Due to the illustrated operating menu 140, the graphic 70 (see FIG. 2 ), which symbolizes the hob 38, is distorted and reduced in a figure 142 by the display unit 10 ( FIG. 24 ).

In the FIGS. 25 to 27 an alternative embodiment of a domestic appliance display device is shown. Substantially identical components, features and functions are basically numbered by the same reference numerals. To distinguish the embodiments, however, the reference numerals of the embodiment in the FIGS. 25 to 27 the letters "a" added. The following description is essentially limited to the differences from the embodiment in the FIGS. 1 to 24 , wherein with respect to the same components, features and functions on the description of the embodiment in the FIGS. 1 to 24 can be referenced.

In FIG. 25 For example, a hob 38a is shown with a home appliance display 40a having a controller 12a with a data set 16a. A part of the data set 16a is a display size changing program including a distortion program. In addition, the control unit 12a comprises a processor unit 152.

In FIG. 26 A display unit 10a forms a representation of the hob 38a. A cooking zone 28a is represented by a representation of a graphic 18a shown in FIG. 19a with a representation size 20a which corresponds to a diameter 56a. When an operator selects the cooking zone 28a, the display size changing program causes enlargement of the display of the graphic 18a in FIG FIG. 26 in that the processor unit 152 uses data representing the image 19a to calculate an enlargement of the image 19a which is displayed by the display unit 10a in a map 58a ( FIG. 27 ).

In the FIG. 26 the hob 38a is symbolized by a representation of a graphic 70a. Upon selection of the cooking zone 28a by the operator, the processor unit 152 calculates, based on the representation of the graph 70a, by means of the distortion program a distortion of this representation, which in FIG. 27 is represented by a symbol 72a of the display unit 10a. reference numeral 10 display unit 62 Illustration 12 control unit 64 Illustration 14 data collection 66 Illustration 16 amount of data 68 Illustration 18 graphic 70 graphic 19 Illustration 72 symbol 20 display size 74 length 21 Illustration 76 width 22 graphic 78 length 24 graphic 80 width 26 graphic 82 Touch element 27 graphic 84 thermometer symbol 28 cooking zone 86 symbol 30 cooking zone 87 symbol 32 cooking zone 88 Illustration 34 cooking zone 92 Illustration 36 cooking zone 94 Illustration 38 hob 96 Timing-touch element 39 pyrometer 98 Illustration 40 Domestic appliance display device 100 cooking time 42 operating unit 102 Illustration 54 Touch element 104 Cooking zone expansion 56 diameter 106 Illustration 58 Illustration 108 outdoors 59 circular area 110 Illustration 60 diameter 112 Illustration 114 Illustration 116 Touch element 118 Illustration 119 Boost Icon 120 symbol 122 symbol 124 distance 126 distance 128 Touch element 130 pan icon 132 Illustration 134 bar symbol 136 symbol 138 Illustration 140 operating menu 142 Illustration 146 Illustration 148 Illustration 150 Illustration 152 processor unit

Claims (8)

1. Cooking hob with a household appliance display device (40; 40a), which has at least one display unit (10; 10a), which has an invariable display surface in relation to its size and is provided for reproducing displays of the cooking hob, wherein cooking zones (28-36) are represented by graphics (18, 22, 24, 26, 27, 70; 18a, 26a, 27a, 70a), and also has at least one control unit (12; 12a) which has at least one collection of data (14; 14a),
   characterised in that
   the collection of data (14; 14a) has at least one quantity of data (16; 16a) which is provided to display at least one of at least two graphics (18, 24; 18a, 24a) displayed by the display unit (10; 10a) in an operating mode enlarged and to display at least one other reduced, wherein, in the event of an operator selecting one of the cooking zones (28-36) by means of a touch element (54) of an operating unit (42), the associated graphic (18) is shown modified by this action, in that the cooking zone(28) is symbolised by an enlarged display (58) compared to a display (19) which shows the cooking zone (28) in an inactive state, through which one symbol of the cooking zone (28) is highlighted and the remaining cooking zones (30 to 36) by comparison with displays (21, 146, 148, 150), which show the cooking zones (30 to 36) in an inactive state, are represented by reduced-size displays (62 to 68).
2. Cooking hob according to claim 1,
   characterised in that
   the quantity of data (16; 16a) is provided to present at least one part of a graphic (70; 70a) displayed by the display unit (10; 10a) in an operating mode in a distorted manner.
3. Cooking hob according to claim 2,
   characterised in that
   the quantity of data (16; 16a) is provided to present at least one position of two symbols (120, 122; 120a, 122a) displayed by the display unit (10) in an operating mode changed relative to one another.
4. Cooking hob according to one of the preceding claims,
   characterised in that
   the quantity of data (16; 16a) comprises picture data.
5. Cooking hob according to one of the preceding claims,
   characterised in that
   the control unit (12; 12a) includes a display size modification program for presenting a displayed graphic with at least one modified display size.
6. Cooking hob according to one of the preceding claims,
   characterised in that
   the graphic (18, 26, 27, 70; 18a, 26a, 27a, 70a) has at least one cooking zone symbol.
7. Cooking hob according to claim 6,
   characterised in that
   at least one symbol (86; 86a) is integrated into the cooking zone symbol.
8. Display method with a cooking hob according to claim 1, wherein, of at least two graphics (18, 24; 18a, 24a) displayed by a display unit (10; 10a) in an operating mode, at least one is shown enlarged by comparison with an inactive state and at least one other is shown reduced by comparison with an inactive state, wherein, in the event of an operator selecting one of the cooking zones (28-36) by means of a touch element (54) of an operating unit (42), the associated graphic (18) is shown modified by this action, in that the cooking zone (28) is symbolised by an enlarged display (58) compared to a display (19) which shows the cooking zone (28) in an inactive state, through which one symbol of the cooking zone (28) is highlighted and the remaining cooking zones (30 to 36), by comparison with displays (21, 146, 148, 150) which show the cooking zones (30 to 36) in an inactive state, are represented by reduced-size displays (62 to 68).

Images