Method and device for controlling the selection of media files for playback

Abstract

In a method for controlling the selection of media files for playback, graphical objects are displayed, and each media file is assigned to one graphical object in each case. In addition, first probabilities, by which the media files are selected for playback, are indicated in the method via a feature of the graphical objects. An operating action by a user, by which the feature of at least one graphical object is modified, is detected. Moreover, second probabilities are assigned to the graphical objects as a function of the modification of the feature of the at least one graphical object. The media files are selected for replay as a function of the second probabilities. In addition, a device is arranged for controlling the selection of media files for replay purposes.

Claims

1. A method for controlling selection of media files for playback comprising: displaying graphical objects, a single media file being assigned to each of the graphical objects; indicating first probabilities by a feature of the graphical objects; detecting an operating action of a user, by which the feature of at least one graphical object is modified; assigning second probabilities to the graphical objects as a function of the modification of the feature of the at least one graphical object; wherein the feature of the at least one graphical object correlates linearly with the second probabilities; and selecting the media files for playback as a function of the second probabilities during a shuffle functionality; wherein the first and second probabilities are the probabilities that the media files assigned to the graphical objects are played during a shuffle functionality.

2. The method according to claim 1, wherein the feature of the graphical objects is the same for all graphical objects prior to the operating action, so that each media file is selected for playback based on the same first probability, the feature of the at least one graphical object is modified by the operating action, and following the operating action, the media file to which the one graphical object is assigned has a higher/lower second probability as a function of the operating action, whereas other media files have a correspondingly lower/greater second probability.

3. The method according to claim 1, wherein the feature includes a size of the graphical objects, and the first probability of the media file assigned to the at least one graphical object is increased or decreased by enlarging or reducing the at least one graphical object.

4. The method according to claim 1, wherein the operating action includes a gesture of the user on a display area having a touch-sensitive surface.

5. The method according to claim 4, wherein the at least one graphical object is selected while other graphical objects are not selected, and the touch-sensitive surface is touched in at least two points, and the selected graphical object is enlarged or reduced in that a distance between the two points is enlarged or reduced.

6. The method according to claim 5, wherein the selected at least one graphical object has a boundary, and the at least two points lie within the boundary of the selected at least one graphical object.

7. The method according to claim 5, wherein a size of the non-selected graphical objects are reduced or enlarged in accordance with the enlargement or reduction of a size of the selected at least one graphical object.

8. The method according to claim 1, wherein the media files and the first and/or second probabilities are displayed in a list, and the media file having a greatest first and/or second probability is displayed in first place on the list.

9. The method according to claim 1, wherein the media files include music titles, and the graphical objects includes representations of album covers of the music titles.

10. A device for controlling selection of media files for playback, comprising: a display device adapted to display graphical objects, a single media file being assignable to each of the graphical objects; a control unit coupled to the display device and adapted to actuate the display device such that first probabilities are displayable by a feature of the graphical objects; a detection device adapted to detect an operating action of a user, the feature of at least one graphical object being modifiable by the operating action; a computing unit integrated into the control unit and adapted to assign second probabilities to the media files as a function of the modification of the feature of the at least one graphical object, the media files being selectable with the aid of the control unit as a function of the second probabilities; wherein the feature of the at least one graphical object correlates linearly with the second probabilities; and a playback device adapted to play back selected media files of one of the first or second probabilities during a shuffle functionality; wherein the first and second probabilities are the probabilities that the media files assigned to the graphical objects are played during a shuffle functionality.

11. The device according to claim 10, wherein the detection device includes a touch-sensitive area on a display surface of the display device.

12. The device according to claim 10, wherein the device includes a media system adapted to store the media files.

13. The device according to claim 10, wherein the device is arranged in an interior space of a vehicle.

14. A vehicle, comprising the device as recited in claim 10.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 shows a device according to an example embodiment of the present invention.

(2) FIGS. 2a to 2c show displays which are generated by a method according to an example embodiment of the present invention.

(3) FIG. 3 shows an example of a correlation between the size of a graphical object and the probability.

(4) FIG. 4 shows a table with exemplary first probabilities prior to the operating action and second probabilities following the operating action.

(5) FIG. 5 shows a display on the display area, which is generated by a method according to an example embodiment of the present invention.

(6) FIG. 6 shows an example of the positioning of the device according to an example embodiment of the present invention inside a vehicle.

DETAILED DESCRIPTION

(7) A device 1 according to an example embodiment of the present invention will be discussed with reference to FIG. 1.

(8) Device 1 includes a display device 2. The display area of display device 2 includes a touch-sensitive surface and is used as detection device 3. In the following text, the touch-sensitive surface as detection device 3 is indicated by reference numeral 3.

(9) Multiple graphical objects 7 are able to be displayed on the display area of display device 2. Graphical objects 7 are generated on the display area as a function of the media files stored in a media system 14.

(10) Graphical objects 7 have a feature S, which is modifiable via operating actions of a user on touch-sensitive surface 3 of display device 2. Feature S of graphical objects 7 is their size, in particular. As an alternative, feature S of graphical objects 7 may also be their color. Feature S in particular correlates with a second probability P2 of the media files that the user can adjust on touch-sensitive surface 3 via an operating action.

(11) Device 1 furthermore includes a control unit 4. Control unit 4 is coupled with display device 2 and is able to control it. A computing unit 5 is integrated into control unit 4. Using feature S of graphical objects 7, that is to say, their size, control unit 5 is able to ascertain first probabilities P1 prior to the operating action, and second probabilities P2, by which the media files assigned to graphical objects 7 are selected for playback, even during or following the operating action.

(12) In this particular example, the media files are music titles. Graphical objects 7, for example, are album covers representing the music titles. For instance, all media files or a sub-set are/is displayed on the display area by assigned graphical objects 7.

(13) In addition, device 1 includes a playback device 6, which in this particular example is arranged as a music playback device equipped with loudspeakers 6.1 and 6.2. Using playback device 6, a media file then is selected for playback based on first P1 or second probabilities P2 ascertained by computing unit 5, and finally played back.

(14) Display device 2 provided with touch-sensitive surface 3, control unit 4, computing unit 5 and playback device 6 with loudspeakers 6.1 and 6.2 may be components of a smartphone or a tablet computer, in particular.

(15) A first exemplary embodiment of the method will be explained with reference to FIGS. 2a through 2c, 3 and 4.

(16) As the starting situation, graphical objects 7.1 through 7.16 are displayed on the display area. The user activates a functionality by which the media files are played back at random, i.e., a so-called shuffle functionality. A first probability P1, based on which the media files assigned to graphical objects 7.1 through 7.16 are selected for playback, is assigned to the media files at the outset. All first probabilities P1 are the same at the start of the method. This is indicated to the user in that all graphical objects 7.1 through 7.16 have the same size S. In the case of sixteen media files, each media file is assigned a first probability P1 of 6.25%.

(17) In this particular example, the user wishes to assign a second probability P2 to the media files. The procedure is explained for graphical object 7.15 by way of example. It is the user's intention, for instance, to assign a higher second probability P2 to the media file allocated to graphical object 7.15. To do so, the user touches graphical object 7.15 at two points 10.1 and 10.2 from a certain distance A. Point 10.1 is touched by his right index finger 9.1, and point 10.2 by his right thumb 9.2. The user then enlarges distance A by spreading his thumb 9.2 and his index finger 9.1 apart. This operating action is detected by the touch-sensitive surface, i.e., detection device 3, for instance. It transmits a signal to computing unit 5, in which first probabilities P1 that have been assigned to the media files via size S of graphical objects 7.1 through 7.16 are stored. Computing unit 5 continually ascertains a second probability P2 in the process.

(18) FIG. 3 shows the relationship between size S of graphical objects 7.1 through 7.16 and second probability P2 by way of example for graphical object 7.15. The relationship may be a linear correlation, probability P2 being plotted on the x-axis and size S of graphical object 7.15 being plotted on the y-axis. Side length b of graphical object 7.15 is used for measuring size S of graphical object 7.15. The larger b is, the greater second probability P2 assigned to graphical object 7.15 will be.

(19) Size S of graphical object 7.15 at the end of the operating action defines second probability P2 that is ultimately assigned to the media file allocated to graphical object 7.15. The gesture by which graphical object 7.15 is enlarged is also referred to as “pinch-in” gesture. It is also used in zooming operations, in particular, and therefore especially intuitive.

(20) If the user wishes to reduce first probability P1, he will reduce distance A between the two contact points 10.1 and 10.2 by moving his index finger 9.1 and thumb 9.2 toward each other. This gesture is also known as a “pinch-out” gesture and is as intuitive as the “pinch-in” gesture.

(21) In this particular example, the user assigns a second probability P2 to each media file using a “pinch-in” or a “pinch-out” gesture. The end result is shown in FIG. 2c. Using the operating action described in the preceding text, a second probability P2 has been assigned to each graphical object 7.1 through 7.16. Second probabilities P2 are illustrated in FIG. 4 by way of example. This makes it clear that the media file assigned to graphical object 7.15 now has the highest second probability P2 of being selected and played back from among the set of media files. Second probabilities P2 are stored in computing unit 5 and used as first probabilities P1 in a new start-up of device 1.

(22) As an alternative, a control element by which the user is able to reset all probabilities P2 to the same value again is shown on the display area.

(23) A second exemplary embodiment of the method is explained with reference to FIG. 5.

(24) The media files are music albums, i.e., no longer individual music titles, and the shuffle functionality then randomly selects an album from which all music titles are then played back in sequence. As an alternative, however, the individual music titles within the albums can be assigned second probabilities P2. A new album then will be selected randomly again only when all music titles from the selected music album have been played back. If the user wants to prevent the playback of a music title of an album, then the user assigns the second probability of zero to the graphical object allocated to the music title. In this case the corresponding graphical object may be displayed in dimmed form.

(25) In the starting situation of the second exemplary embodiment, only fifteen graphical objects 11.1 through 11.15 are displayed on the display area. Graphical objects 11.1 through 11.15 have the same size. Given fifteen media files in a media system 14, probability P1 of being selected and played back is approximately 6.66% for each media file. At the start of the method, graphical objects 11.1 through 11.15 have same size S. This indicates to the user that all media files have the same first probability P1 of being selected and played back. In addition, the names of all performers of the music albums are displayed in a list 12 that is shown next to graphical objects 11.1 through 11.15, as well as the numerical values of first probabilities P1 that a music album will be selected next. At the start of the method, the numerical value of 6.66% will therefore be displayed in column 12.2 of list 12 for each performer.

(26) The user now wishes to increase first probability P1 of only one media file, e.g., the music album that is assigned to graphical object 11.1. To do so, the user touches graphical object 11.1 and thereby selects it. Then, the “pinch-in” gesture is executed in a random area of touch-sensitive surface 3. This may be advantageous if the method is carried out in a vehicle 8, especially when driving on uneven roads, where the user has a hard time keeping his hand in one place.

(27) Simultaneously with the enlargement of graphical object 11.1, the numerical value of the probability changes in column 12.2 of list 12. This gives the user not only a visual impression of the probability change, but also provides a probability change expressed numerically. At the same time, the numerical values of all other media files are adapted as well because if first probability P1 of a media file is increased, first probabilities P1 of all other media files decrease to the same degree, as well.

(28) That is to say, if first probability P1 of the media file assigned to graphical object 11.1 is increased from 6.66% to 9.98%, first probabilities P1 of the other media files are automatically reduced from 6.66% to second probability P2 of 6.43%. In order to ensure that all graphical objects 11.1 through 11.15 can still be accommodated on the display area despite the enlargement of graphical object 11.1, graphical objects 11.14 and 11.15 situated in the bottom row may be shifted to the right in the display area, yet the sizes of graphical objects 11.1 through 11.12, 11.14 and 11.15 remain unchanged in all other respects. The display in the display area following the operating action is shown in FIG. 5.

(29) As an alternative, it is also possible to reduce the sizes of graphical objects 11.1 through 11.12, 11.14 and 11.15 to the same extent.

(30) The first and the second exemplary embodiment of the method are combinable as desired. For example, the gesture may be performed in any region of the display area in the first exemplary embodiment as well, or on graphical object 11.1 in the second exemplary embodiment.

(31) FIG. 6 shows a vehicle 8 including a device 1 as explained in FIG. 1. Display device 2 having the touch-sensitive surface as detection device 3 is disposed in center console 13 of vehicle 8. Media system 14 may either be installed in vehicle 8 itself or be connected from the outside via an interface. For example, a media system 14 may be an MP-3 player, a smartphone or a tablet computer. Playback device 6 could either be part of vehicle 8 or also connected externally or linked with vehicle 8. If the playback device is connected externally or linked with vehicle 8, then it could likewise be an MP3 player, a smartphone or a tablet computer. Nevertheless, it is still possible in particular to use loudspeakers 6.1 and 6.2 of vehicle 8 for the playback operation.

LIST OF REFERENCE CHARACTERS

(32) 1 device 2 display device 3 detection device; touch-sensitive surface 4 control unit 5 computing unit 6 playback device 6.1, 6.2 loudspeaker 7 graphical objects 7.1-7.16 graphical objects 8 vehicle 9 hand 9.1 thumb 9.2 index finger 10.1, 10.2 contact points 11.1-11.15 graphical objects 12 list 12.1, 12.2 columns of the list 13 center console 14 media system A space between the contact points b side length of the graphical objects P1 first probability P2 second probability S feature of the graphical objects, size of the graphical objects