DE102014205596A1 - Method for operating a household appliance and household appliance - Google Patents

Abstract

The invention relates to a method for operating a household appliance (1) which is provided with a number m of operating functions (BF1 to BF3), wherein a plurality of active processes of at least one operating function (BF1 to BF3) carried out in the past is evaluated to with which values of a parameter these processes have respectively taken place, and a priority list of the values of the parameter is created as a function of the value frequency and the most frequent value in the priority list on a display unit (3) of a control unit (4) of the domestic appliance (1) as a reference value ( 6a to 8a) is displayed for selection for a future performance of this operation function (BF1 to BF3). The invention also relates to a household appliance for carrying out such a method.

Description

The invention relates to a method for operating a household appliance, which has a plurality of operating functions.

Modern household appliances for the care of laundry items, such as a washing machine or a tumble dryer or a washer dryer, a household appliance for preparing food, such as an oven or hob or a microwave oven or a Dampfgargerät, or a household appliance for cleaning dishes or furnishings, such as For example, a dishwasher or a vacuum cleaner, or a household appliance for storing and preserving food, such as a refrigerator or a freezer or a combined refrigerated freezer, have a variety of operating functions. Although these devices are extensively equipped by such a variety of operating functions and can be used according to extent, yet it shows in practice that the user behavior in the context makes only limited use of the versatility of these operating options. Very often the user behavior is characterized by the fact that only a limited number of these operating functions are used and this significantly reduced number is therefore used very frequently and repeatedly on the other hand.

In addition, the user behavior also shows that in the case of such operating functions, when it is possible to set a plurality of parameter values of a parameter characterizing an operating function, the same value is usually used again and again.

It is an object of the present invention to provide a method for operating a household appliance and a household appliance, with which or in which a user-friendly and in this respect more user-friendly mode of operation is possible.

This object is achieved by a method and a household appliance according to the independent claims.

In a method according to the invention for operating a domestic appliance, this is provided with a number m of operating functions. An essential idea of the invention can be seen in the fact that a plurality of active feedthroughs and thus sequences of at least one operating function performed in the past is evaluated with which values of a parameter characterizing this operating function these multiple feedthroughs or sequences have taken place. A priority list of these values of the parameter is then created as a function of the value frequency and the most frequent value in the priority list is displayed on a display unit of a control unit of the domestic appliance as the reference value for selection for a future implementation of this operating function. Thus, at least one of these several operating functions is specifically considered and evaluated. This takes place in that preferably at least two processes or implementations of these one operating function are used in the past and evaluated with regard to this characterizing, at least one parameter. Thus, an evaluation is made as to which specific values of this parameter were set in these at least two processes of this one operating function in the past. This also makes it possible to conclude a future user scenario, and this can be displayed and offered to the user in advance or in advance for a future selection of the operating function. Thus, an intelligent method is made possible, which concludes from a past user scenario on a future user behavior and this possible future user behavior is already offered in advance to the user for his choice and displayed. This allows a more user-friendly and responsive display, which also contributes to a more user-friendly operation.

Preferably, the value is displayed on the display unit together with a symbol characterizing the operation function. Through this embodiment, the intuitive perceptibility is improved by a user, and the operating function is understandable by such a symbol display regardless of the language background of the user, so that even with users with different speech understanding at any time a traceability of the displayed information is possible.

Preferably, the value of the parameter is displayed superimposed with the symbol, so that the information density and the understanding of the information coupling are further improved here.

Preferably, only this reference value is displayed on a first menu level for selecting an operating function. In particular, the first menu level is thus displayed when the household appliance is switched on, and then the operating function with the reference value is shown thereon.

Preferably, one, in particular only one, subordinate in the priority list, in particular the second most frequent, value of the parameter is displayed in addition to the reference value as an alternative value to the selection, if the operating function has been selected for future implementation. Thus, a simultaneous display of two parameter values is only performed when the operating function has actually been selected by a user. As a result, an information overload is avoided on the first menu level and a very structured procedure with regard to a configuration of the parameters of the operating function is performed. The user is thus not burdened on the first information level with a multiple choice, but here has only to decide whether he wants to perform the operation function or not. If this decision has been made and he has selected the operating function, he then again has to make only one decision on the second menu level, namely with which parameter value he would like to perform the selected operating function. It is thus also a very user-friendly and easy-to-understand operation allows, which is very targeted and thus constructed very error-avoiding.

Preferably, the alternative value is displayed only in a second menu level appearing on the display unit after selecting the operating function, wherein preferably the alternative value can only be selected in the second menu level by an operating element displayed only in the second menu level. Here, too, the benefits already mentioned are emphasized in the foreground.

It can also be provided that a control element for starting the selected operating function is displayed on the second menu level. Such a configuration thus enables the complete scenario from the selection of an operating function to the starting of the operating function by means of only two menu levels. Such a menu tree is thus designed minimalist in terms of its menu depth and thus also reduces operator error.

In particular, thus, a menu depth on the display unit for displaying selectable operation functions until starting a selected operation function is limited to two menu levels.

It is preferably provided that the household appliance has a number of m operating functions and m operating functions are also displayed on this first menu level. This is advantageous in a household appliance, which is generally equipped in comparison to other household appliances with a very reduced number of operating functions. It may be provided in the context that the household appliance has a number m with ≤ 4, in particular 3. With such a household appliance, the clarity with regard to the various operating functions is already given for itself, and all these operating functions can then also be displayed on the first menu level simultaneously and next to one another, in particular characterized by symbols.

However, it can also be provided that the household appliance has a significantly higher number m of operating functions than basic or basic equipment. In order not to lose the overview for a user in terms of ease of use in such devices, it may be advantageous that a selection of operating functions to be displayed is also made here, this then also advantageously based on a frequency of use of the operating functions determined from the past he follows.

Thus, it can preferably be provided that a respective frequency of the operating functions selected in the past for active execution is evaluated and a priority list of the operating functions is determined as a function of this execution frequency, and only one on a display unit of a control unit for controlling the domestic appliance for a future selection of an operating function reduced number n <m of operating functions is displayed, wherein the number n are the most frequent in the priority list operating functions, in particular starting with the most commonly used operating function. Thus, a very advantageous embodiment is achieved to the effect that even with very extensive operating functions fundamentally equipped household appliances clarity can be improved for a user and him in terms of past in the past user behavior a representation is displayed and quasi-forward with a high Probable future user behavior is already offered and presented for selection. It is therefore essential that a user can see the operating functions most frequently used by him in the past on a display unit, a reduced number being displayed in relation to the maximum possible number of operating functions that can be performed by the household appliance , Such a configuration avoids information overload for the user. On the other hand, this also ensures that the user is shown the operating functions which he has traditionally used most frequently and thus the probability that he will in turn, in a future selection scenario of an operating function for actively performing this operating function, in turn selects and uses one of these most common operating functions. This also allows a user-friendly mode of operation, because a user first does not have to look very far in a large number of operational functions for the one that he would like to perform and which he also usually uses very often, but it is almost equal to the choice presented as a proposal.

Preferably, it is possible for the user to change this display individually, independently of the automatically determined display of the n operating functions, by not wanting one or more of these operating functions as prioritized priority functions in the display and thus deleting them in the topmost menu level for display. It may then also display one or more other operational functions listed in the priority list for number n + 1 in the context.

In addition, in each of the menu levels, in particular in each of the preferably only two menu levels, there is also the possibility for a user to display all the possible operating functions offered by the household appliance, so that he can also very quickly and easily make another selection an operating function can meet. This also achieves a minimized menu depth and a minimized operating distance for this user-specific setting.

Preferably, the most frequently displayed operating functions displayed on the display unit are each indicated by an icon characterizing the respective operating function. As a result, the easily comprehensible and extensive compact information presentation for a user is possible. Through symbols it is very intuitive for the user to determine and understand which operating function is meant. Since symbols can also be made relatively small, the representation on the display unit can be very compact and the display unit can also be provided with reduced dimensions. There is thus no superfluous large gestaltendes display required. In addition, the display of symbols is also comprehensible across languages and thus can be understood immediately by people of different language nationality.

Preferably, when evaluating the execution frequency of the operating functions, a parameter of these operating functions taken into account for the frequency of execution is also evaluated with respect to which value of this parameter these operating functions actively performed in the past were respectively performed. As a result, additional information is obtained, which can then optionally be displayed to the user. Just when, therefore, operating functions can also be varied by the parameters describing them in the respective values and can then be adapted for carrying out the operating function, an additional simplification and user-friendliness can also be achieved in the context, because at least by evaluating the frequency of use of the values a parameter of an operating function, the operating depth for a user can also be reduced from the selection to the actual starting of an operating function.

In particular, it is provided that when evaluating the execution frequency of the operating function, only a single parameter of these operating functions taken into account for the frequency of execution is evaluated with which value of this parameter those operating functions actively carried out in the past and selected for the determination of the frequency of use are carried out. It is thus based on an extremely minimalistic principle in this embodiment, so that then for the future operation of the household appliance by the user this can be as simple as possible and already prepared for the user needs and prepared, this being based on past use frequencies. This embodiment thus creates an intelligent household appliance which, by evaluating actively performed operating functions, concludes the possible future mode of operation and presents this to the user in a proactive manner for his selection.

In an advantageous embodiment, it is provided that the parameter of the considered operating functions, which is evaluated in terms of value with regard to its frequency of use set in the past, can in particular be changed user-specifically. This means that if this parameter is of secondary importance to the user, it can also take into account and use another different parameter, which is also characteristic of and characterizes the operating functions, for determining the frequency of use.

Preferably, for at least one operating function, in particular for each operating function, the n operating functions are evaluated a number k of processes of the parameter value set in each case in the past, and depending on this, a most frequently set reference value of the parameter is determined.

It is preferably provided that at least two separate processes that have taken place in the past for each operating function are taken into account for the respective determination of the frequency of use.

It can be provided that for different operating functions a different or equal number of in each case carried out in the past several processes of the respective operating function for the evaluation of the frequency of use is taken into account. Accordingly, this is done with respect to the evaluation of the frequency of use of the values of a parameter that characterizes an operating function.

Preferably, it is provided that when such an evaluation of values of a parameter in the case in which at least two different values occur equally frequently, the value which is greater in terms of value than reference value is determined. However, it may also be that the value is determined as the reference value, which is then the value-wise smaller value at this same frequency. However, it can also be provided that, in addition to or instead of this, it is then taken into account which of these equally frequent values was set in the last active execution of the considered operating function, and this is then determined and displayed as a reference value.

Preferably, the, in particular the only one, reference value is displayed on the display unit in addition to the associated operating function. In particular, this reference value is here displayed, for example, in addition to a symbol characterizing the operating function or a symbol characterizing the operating function, superimposed or superimposed. This is locally very compact and locally presented a multiple information presentation for an operating function. On the display unit, this information presentation takes place via menu levels, this information indicating the number n of the most frequent operating functions and in particular additionally also a reference value of a parameter characterizing the operating functions being additionally displayed on this menu level as common information. The user thus immediately and immediately sees a compact information presentation with characteristic information about his user scenario carried out in the past when the household appliance is switched on. It is then displayed to him on this first menu levels a very reduced and for him representative and easily understandable presentation of his user behavior, which was determined from this determined from the past use frequency.

The display is preferably carried out in such a way that the most frequent operating functions that the user has actively performed in the past are displayed on a first menu level on the display unit, in particular simultaneously and next to one another. As a result, already on a first menu level, without extensive and sometimes difficult to understand changing menu levels by the user, the entire information of his past user behavior set out. This allows him to quickly and easily recognize which different operating functions and, if applicable, with which parameter values he has used these operating functions in the past. Such a configuration also minimizes the menu depth for operating a user and thus for the entire selection scenario from the beginning of a selection of a future desired operating function to the start of the operating function.

Preferably, for performing one of the n operation functions, the displayed operation function is selected by a user and after the detected selection, a second menu level is displayed on the display unit, in which only the selected operation function is displayed with respect to the operation functions and a control for starting the selected operation function is displayed. This embodiment is particularly advantageous because it minimizes the overall operating scenario for a user. The user no longer has to go through many menu levels extensively until he receives his settings for the desired operating function and can start it.

Preferably, at least one, in particular only one, alternative value of the parameter relative to the reference value of the parameter is displayed on this second menu level in addition to the reference value of the parameter. This also automatically provides the user with the possibility in a very simple and clear manner that he can also carry out the selected operating function with a parameter value other than the reference value. By only a single additional alternative value is displayed and thus preferably only a maximum of two values of this characterizing parameter of the operating function are displayed on this second menu level, is still fully simplified and clear presentation for a user given without losing the overview of the choices would and an information overload would occur, which could then possibly lead to incorrect settings or an unwanted selection. Since user behavior has also shown that, although the operating functions are very often always the same ones that are used, there is one in the characterizing parameters If more frequent variation in parameter values occurs, this is a very advantageous embodiment of the invention.

It can be provided that this alternative value, which is then also displayed on the second menu level, is displayed smaller in size than the reference value. Even then, even with a menu level change from the first menu level to the second menu level, the information is still intuitively communicated that the larger displayed value of this parameter is the reference value.

It can also be provided that in the case in which, in addition to the reference value, an alternative value is displayed, a further operating element is automatically displayed with which a selection of one of the two values can be made. This also simplifies the user's operating scenario, as he does not have to think about how to select one of the two values. By a displayed in this regard control the choice is clearly specified.

However, it could also be provided that the displayed values can be touched by a user, in particular by a finger, and thus a corresponding desired selection is made.

Preferably, a menu depth on the display unit for displaying selectable operating functions until the start of a selected operating function is limited to two menu levels. This also contributes significantly to the user-friendly operability of the household appliance, since the user can not get lost in a jumble or jungle of many menu depths and thus does not lose the overview to which menu level he is and what he has already set or still has to adjust , By minimizing this to two menu levels, the minimalistic information representation already explained above on the most common operating functions and a parameter value characterizing the operating function can also be adapted thereto and a very intuitive presentation of information on the respective levels for understanding and comprehension.

The second menu level is displayed in particular only when an operating function has been selected in the first menu level.

The number n is preferably set to ≦ 4, in particular 3. Again, this is designed to meet the needs of a user's perception and perceptibility, as it is precisely this specific number that reflects user behavior in practice very well. Moreover, for a variety of different household appliances, it is precisely this specific number that is also representative in that it indicates in this connection a number which in fact represents very different operating functions. This applies both to home appliances for the care of laundry, as well as for the preparation of food, as well as for cleaning dishes, as well as for storing and preserving food.

It is particularly advantageous that the display unit has a touch-sensitive control panel, on which the n operating functions can be displayed and selected by touching. As a result, a display and simultaneous selection option is also in turn created very compact, so that here again can be typed by touching with a finger directly to the desired operating function, so that even here with a simultaneous display of n operating functions on the display unit no unwanted misadjustment can be done.

The same is then also provided for the selection of the parameter value for the then selected operating function, so that this parameter value selection can also take place here via touch-sensitive operation. This can be done by direct local contact of the displayed number or the value or by, as already explained above, in an advantageous embodiment, an immediately adjacent displayed on the touch-sensitive control panel control.

It can be provided that the display unit is integrated in the household appliance or the control unit is made portable. In a stationary and thus permanently installed display unit and control unit, the display unit can then be arranged on a control panel of the household appliance and, for example, be accessible from the front.

In one embodiment, in which the control unit is at least removable from the household appliance nondestructive and thus reversibly repeatable removable and re-attachable, thus an operation can also be done external to the device. In such an embodiment can also be provided that the control unit is designed to be completely portable.

It can also be provided that the control unit is a separate device to the household appliance, and is designed multifunctional. The control unit may be formed in the context in addition to the control of the household appliance also for controlling another device or for communication. It may, for example, be a communication terminal, such as a mobile phone or a tablet computer.

Preferably, a household appliance for the care of laundry and / or a household appliance for preparing food and / or a household appliance for storing and preserving food and / or a household appliance for cleaning dishes or furnishings operated. A household appliance is thus a device which is designed for household management with regard to the said functional embodiments. A home appliance is not a conventional conventional computer for doing office work or the like in the context and is not any other apparatus such as a smoke alarm system, etc.

Furthermore, the invention also relates to a household appliance with an operating and display device, which is designed to carry out a method according to the invention or an advantageous embodiment thereof.

The invention thus also includes a system which forms the household appliance with a portable control unit.

Further features of the invention will become apparent from the claims, the figures and the description of the figures. The features and feature combinations mentioned above in the description, as well as the features and combinations of features mentioned below in the description of the figures and / or shown alone in the figures, can be used not only in the respectively specified combination but also in other combinations or in isolation, without the frame to leave the invention. Thus, embodiments of the invention are to be regarded as encompassed and disclosed, which are not explicitly shown and explained in the figures, however, emerge and can be produced by separated combinations of features from the embodiments explained.

Embodiments of the invention are explained in more detail below with reference to schematic drawings. Show it:

1 a perspective view of an embodiment of a household appliance according to the invention;

2 an exemplary table of operations of operating functions in the past, which are used as a determination for a frequency of use;

3a an exemplary display of a first menu level on the household appliance according to 1 ;

3b an exemplary display of a second menu level, according to the first menu level 3a following selection of an operating function following a display unit of the household appliance according to 1 is shown;

4a a representation of another exemplary first menu level of another embodiment of the household appliance according to 1 ; and

4b an exemplary second menu level, after selecting an operating function on the first menu level according to 4a is displayed on the display unit.

In the figures, identical or functionally identical elements are provided with the same reference numerals.

It is a household appliance for the care of laundry items or a household appliance for cleaning dishes or furnishings or a household appliance for preparing food or a household appliance for storing and preserving food slipped.

Exemplary is in 1 a household appliance 1 for the care of laundry items, such as a washing machine, shown. This household appliance 1 includes a control and display device 2 , which is to be understood by way of example only in terms of her position. A display unit 3 this device 2 also includes a touch-sensitive control panel.

The operating and display device 2 is functional and component specific to a control unit 4 for controlling the household appliance 1 assigned.

The household appliance 1 In the exemplary embodiment, by way of example, a number m of different operating functions is included, wherein this number m is the same, for example 3 can be. Especially if the household appliance 1 is turned on by a user is on the display unit 3 , in particular in a touch-sensitive control panel 5 , a first menu level 9 as they are in 3a shown is displayed. These are on this display unit 3 in particular in a row or in a column next to each other, the three different possible operating functions displayed, in each case associated symbols 6 . 7 and 8th are shown. In the context symbolizes the symbol 6 an exemplary operating function "bright coloreds," the symbol 7 an operating function "dark coloreds" and the symbol 8th the operating function "cooking laundry".

In addition, it is provided that in each of these operating functions, which could also be provided only for only one or two of the maximum three operating functions, a value of a parameter characterizing operating functions is displayed, in particular the symbols 6 to 8th each individually superimposed or displayed superimposed. In the context, the symbol becomes 6 a reference value 6a of the "Temperature" parameter superimposed, the value being 30 ° C. Likewise, a reference value 7a the symbol 7 superimposed, which also affects the temperature with the value 30 ° C. In addition, a reference value 8a the symbol 8th superimposed, which also represents a value of the parameter "temperature" and in the illustrated embodiment is 60 ° C.

This information representation for a user at the first menu level 9 it follows that this exemplary home appliance 1 has only three operating functions. The respective displayed reference value 6a to 8a results from a determination of the frequency from the respective historically executed processes of the individual operating functions BF1, BF2 and BF3, as shown in the table in FIG 2 is shown by way of example. This means that from a number of respective sequences or implementations of the individual operating functions BF1 to BF3 that are in the past, the values of the temperature used in each case are taken into account and in this context the respective frequency of use is evaluated. In the context is an exemplary table in 2 are shown, which are to be understood neither in terms of the used for the frequency determination number of operations performed in the past or implementations of the respective operating functions BF1 to BF3 as well as in terms of the respective explicit values of the parameter of the temperature.

It can be recognized in the context that for the operating function BF1, the symbol 6 is shown, in the past three processes have taken place or for the frequency of use of the parameter temperature with its values these three processes are taken into account. It can be seen that in two of these processes, the temperature value of 40 ° C was set and in one of these three processes, the temperature value 30 ° C was set. Thus, it can be stated that in the number of operations of the operating function BF1 actively performed in the past, the most frequent value of the temperature parameter was 40 ° C., which thus represents the reference value, as it then appears in 3a at the first menu level 9 was displayed. Accordingly, it can be seen that for the operating function BF2 five active processes carried out in the past are taken into account and it is recognized that in four of these processes carried out in the past the temperature value 30 ° C was set and once the temperature value 40 ° C was set. It is thus as shown in FIG 3a as a reference value 7a the temperature value 30 ° C is displayed. Correspondingly, for the third operating function BF3, consideration has also been given to five operations performed in the past and it can be seen that the temperature value 90 ° C. is the most frequently used here.

The user is thus on the first menu levels 9 enables a selection scenario, which represents his past user behavior and gives him the possibility that his future user behavior with a high probability in terms of selection of a future desired operating function BF1 to BF3 are provided to a certain extent preset and selected can.

Is this done and at the first menu level 9 the representation according to 3a displayed, the user can then select one of the three possible operating functions for his future desired washing process. In the exemplary embodiment, it is provided that the user wants to wash dark coloreds and thus selects the operating function BF2 by clicking on the symbol 7 type or touch this. If this has happened, then the display unit 3 the first menu level 9 hidden and instead the second menu level 10 as they are in 3b is displayed. However, it can also be provided that in addition to the first menu level 9 then underneath or next to it the second menu level 10 is shown.

When viewing the second menu level 10 then becomes the symbol 7 represented and in addition to the reference value 7a an alternative value 7b especially the symbol 7 faded out. This alternative value 7b is then preferably the second most frequent value of the parameter BF2 characterizing the operating parameter, namely in the embodiment of the temperature. To clarify that in the established priority list of the different parameter values set in the past, the alternative value has occurred less frequently, it is displayed smaller than the reference value 7a ,

The user can then also by displaying the second menu level 10 displayed control 11 make a selection between the two values, with which temperature value he then wants to perform his selected operating function BF2. For example, such a selection can be made to the effect that after pressing the operating element 11 the selected value flashes and / or lights up in a different color, etc. If the selection of the desired temperature with which the operating function BF2 is to be carried out is then carried out, then this can also be done on the second menu level 10 displayed control 12 this operating function BF2 be started. So there are only two menu levels 9 and 10 from the basic display and selection of the operating functions to the start of the selected operating function. As a result, a very flat menu structure or a very flat menu tree is designed.

The household appliance 1 is equipped with a number m of operating functions. Based on a past user behavior, a priority list of the actively performed and thus actually used operating functions is created, and then there is only a reduced number n ≤ m of operating functions commonly used on the display unit in the past 3 , especially at a first menu level 9 , displayed.

For example, indicates the household appliance 1 At least four different operating functions, so a frequency of use of these four operating functions is determined in the past. For this purpose, it can be provided that a corresponding priority list with respect to the frequency of use of the individual operating functions is created from a total number of processes of all operating functions performed in the past. However, it can also be provided that such a priority list is created in such a way that at least two processes which have been carried out in the past with a respective operating function are taken into account and evaluated.

In the exemplary embodiment, it is provided that the number n is the same 3 is and thus the three most frequently used operating functions of the four possible operating functions on the first menu level 9 are displayed. In addition, it is then provided that to each of these operating functions, which then at the first menu level 9 are displayed, a parameter characterizing the respective operating function, in the exemplary embodiment the temperature, with a turn from the reference value set in the past is displayed. In particular, the reference value is that value which represents the most frequent value of this parameter among the values considered for the determination of the frequency of use, or which otherwise results in the "most frequent" value.

In 4a is another embodiment of a representation of information on the first menu level 9 shown. This again corresponds to the representation in FIG 3a Then, in this embodiment, the user then the operating function BF1 by tapping or touching the symbol 6 selects. As then in the presentation in 4b which is the second menu level 10 characterized, can be seen, then then here again only the symbol 6 and thus no longer additionally the symbols 7 and 8th displayed, and in addition to those in the first menu level 9 only reference value displayed 6a additionally the alternative value 6b displayed for selection. Again, then in turn the control 11 and the control 12 displayed.

LIST OF REFERENCE NUMBERS

1

 household appliance

2

 Operating and display device

3

 display unit

4

 control unit

5

 Control panel

6

 symbol

6a

 reference value

7

 symbol

7a

 reference value

8th

 symbol

8a

 reference value

9

 menu level

10

 second menu level

11

 operating element

12

 operating element

BF1, BF2, BF3

 operating functions

Claims (15)

Method for operating a household appliance ( 1 ), which is provided with a number m of operating functions (BF1 to BF3), characterized in that a plurality of active processes of at least one performed in the past operating function (BF1 to BF3) is evaluated as to which values of a parameter these processes each and a priority list of the values of the parameter is created as a function of the value frequency and the most frequent value in the priority list on a display unit ( 3 ) a control unit ( 4 ) for controlling the household appliance ( 1 ) as a reference value ( 6a to 8a ) is displayed for selection for future performance of this operation function (BF1 to BF3). Method according to Claim 1, characterized in that the value together with a symbol characterizing the operating function (BF1 to BF3) ( 6 to 8th ) on the display unit ( 3 ) is shown. Method according to claim 2, characterized in that the value corresponds to the symbol ( 6 to 8th ) is displayed overlaid. Method according to one of the preceding claims, characterized in that only this reference value ( 6a to 8a ) at a first menu level ( 9 ) is displayed to select an operation function (BF1 to BF3). Method according to one of the preceding claims, characterized in that one, in particular only one, in the priority list subordinate, in particular the second most frequent, value of the parameter in addition to the reference value ( 6a to 8a ) as an alternative value ( 6b to 8b ) is displayed for selection when the operation function (BF1 to BF3) is selected for future operation. Method according to claim 5, characterized in that the alternative value ( 6b to 8b ) only in one after selecting the operating function (BF1 to BF3) on the display unit ( 3 ) second menu level ( 10 ) is shown. Method according to claim 6, characterized in that the alternative value ( 6b to 8b ) only in the second menu level ( 10 ) by only in the second menu level ( 10 ) displayed control element ( 11 ) can be selected. Method according to claim 5 or 6, characterized in that on the second menu level ( 10 ) an operating element ( 12 ) is displayed to start the selected operation function (BF1 to BF3). Method according to one of the preceding claims, characterized in that a menu depth on the display unit ( 3 ) for displaying selectable operating functions (BF1 to BF3) until a selected operating function (BF1 to BF3) is started on two menu levels ( 9 . 10 ) is limited. Method according to one of the preceding claims, characterized in that a respective frequency of the operating functions selected in the past for active execution (BF1 to BF3) is evaluated and a priority list of the operating functions (BF1 to BF3) is determined as a function of this implementation frequency and on a display unit ( 3 ) a control unit ( 4 ) for controlling the household appliance ( 1 ) is displayed for a future selection of an operating function (BF1 to BF3) only a number n <m of operating functions (BF1 to BF3), wherein the number n are the most common in the priority list operating functions (BF1 to BF3). A method according to claim 10, characterized in that the most common operating functions (BF1 to BF3) at a first menu level ( 9 ) on the display unit ( 3 ), in particular simultaneously and next to each other. A method according to claim 11, characterized in that for performing one of the n operating functions (BF1 to BF3) the displayed operating function (BF1 to BF3) is selected by a user and after the detected selection a second menu level ( 10 ) on the display unit ( 3 ) is displayed in which with respect to the operating functions (BF1 to BF3) only the selected operating function (BF1 to BF3) is displayed and a control element ( 12 ) is displayed to start the selected operation function (BF1 to BF3). Method according to one of the preceding claims, characterized in that the display unit ( 3 ) has a touch-sensitive control panel on which the operating functions (BF1 to BF3) can be displayed and selected by touching. Method according to one of the preceding claims, characterized in that a domestic appliance ( 1 ) for the care of laundry items and / or a household appliance ( 1 ) for preparing food and / or a household appliance ( 1 ) for storing and preserving food and / or a household appliance ( 1 ) is operated for cleaning dishes or furnishings. Domestic appliance ( 1 ) with an operating and display device, which is designed for carrying out a method according to one of the preceding claims.

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