Abstract: A multi-view display device, including a controller that is operable to receive from a positioning device, position information representing positions of a left eye and a right eye of a viewer relative to the multi-view display. The viewer is able to activate a channel selection mode in which the multiview display simultaneously projects different stereoscopic channels on the side of his last position before starting the new mode, so he can see other channels by changing his head position. The viewer selects then a desired channel by which it ends the channel selection mode and switches the display to a mode where only one channel is stereoscopically displayed at a time.

Abstract: A device (100) for handheld operation, such as a mobile phone, a mobile terminal, a smartphone, a User Equipment (UE), a tablet, a phablet, a media player, a remote control, or a gaming console, is provided. The device is operative to detect an imminent or prevailing indication of an unstable operation of the device when being held by a hand (110) of a user of the device, and, in response thereto, to increase a grip between an outer surface (101, 103) of the device and one or more fingers (111-114) of the hand. The grip may, e.g., be increased by generating an adhesive force, or by increasing a friction, between the outer surface and the one or more fingers. Thereby, the risk for the user dropping the device is reduced, and a more convenient operation of the device is achieved, in particularly if operated single-handedly.

Abstract: A pre-processing of a pixel in a picture comprises determining, based on a minimum color component value for the pixel, whether a default processing chain is used to derive a luma component value, a first subsampled chroma component value and a second subsampled chroma component value or whether an auxiliary processing chain is used to derive at least one of the luma component value, the first subsampled chroma component value and the second subsampled chroma component value. The pre-processing improves the visual quality of pictures but at a low cost with regard to extra processing time.

Abstract: The present invention relates to a method and a network device for setting up a voice call. The invention further relates to computer programs and computer program products comprising computer readable medium having the computer programs stored thereon. In a first aspect of the invention a method of setting up a voice call between a first party and a second party is provided. The method comprises acquiring information pertaining to at least one detected state of at least one of the first and the second party, determining whether the acquired information pertaining to the at least one detected state of the at least one of the first and the second party satisfies at least one criterion of a scheduling policy for setting up the voice call; and if so causing the voice call to be set up between the first party and the second party.

Abstract: A communications device for generating a key for use as a shared secret in communications with another communications device is provided. Each of the communications devices comprises a sensor array for measuring a spatially-varying magnetic field originating from a first spatially-varying density of metallic particles comprised in a first battery, when subjected to an excitation magnetic field, and processing means operative to acquire a set of values from the sensor array, which set of values represents the spatially-varying magnetic field, and to derive the key from the set of values. The excitation magnetic field is generated by a magnetic-field generator comprised in one of the communications devices. Thereby, the two communications devices may, when in proximity, generate identical keys by probing the spatially-varying density of metallic particles comprised in the first battery.

Abstract: Chunks (12, 14) of encoded video data of a streamed video bitstream (1) are stored and encoded video data is decoded to form decoded video data to be output for display. A selected portion (12) of the stored chunks (12, 14) or selected sub-chunks (25, 27) of the stored chunks (20, 22) for a previous, already played out part (3) of the streamed video bitstream (1) is or are discarded while keeping selected stored chunks (14) or selected sub-chunks (21, 23) stored as navigation tune-in points. The usage of selected stored chunks (14) or sub-chunks (21, 23) that are not discarded from the already played out part (3) of the streamed video bitstream (1) enables a low delay solution during video navigation when a user wants to jump to a previously played out position (5) within the streamed video bitstream (1).

Abstract: There are provided mechanisms for encoding a picture of a video sequence in a video bitstream. The picture comprises a first block of samples, wherein each sample in the first block of samples has sample values associated with at least a luma color component and a chroma color component. Each color component is assigned a first quantization parameter. The method comprises calculating a quantization parameter change for at least one color component in the first block of samples, with respect to the first quantization parameter, based on statistics calculated from the sample values from at least one color component in a second block of samples. The second block of samples is one of: source samples of the first block of samples and source samples larger than the first block of samples including the first block of samples.

Abstract: The embodiments of the present invention relate to a method and an encoder for encoding a bitstream representing a sequence of pictures of a video stream. The pictures are divided into units which are further divided into blocks of a first size, wherein the blocks can be divided further into four quarter blocks of a second size. The encoder comprises a processor (810) and a memory (820), said memory (820) containing instructions executable by said processor (810) whereby said encoder is operative to: calculate a result of at least one comparison involving a scaled version of a first error measure associated with one of the quarter blocks, a scaled version of a second error measure associated with at least the remaining quarter blocks; and a threshold C. When at least one of said comparisons gives a Boolean result of a first kind, the encoder is operative to determine that the unit could be divided into quarter blocks of the second size to be used for encoding the picture.

Abstract: There are provided mechanisms for encoding a picture of a video sequence in a video bitstream. The picture comprises pixels wherein each pixel has a color value comprising at least one color component value. The method comprises determining a frequency distribution of the color component values of the at least one color component. The method comprises determining at least one quantization parameter for coding of transform coefficients for the at least one color component based on the determined frequency distribution of the color component values. The method comprises encoding the determined at least one quantization parameter.

Abstract: A QP offset value is calculated for a chroma component of a pixel in a picture of a video sequence based on a reference QP value and a factor that depends on a difference between a capture color space for the pixel and an encoded color space for the pixel. A QP value is then calculated for the chroma component based on the reference QP value reduced by the QP off-set value. The calculation of QP values for chroma components based on the factor that depends on the difference between capture and encoded color spaces improves the chroma quality in an efficient way in particular for HDR and WCG video.

Abstract: Chunks (12, 14) of encoded video data of a streamed video bitstream (1) are stored and encoded video data is decoded to form decoded video data to be output for display. A selected portion (12) of the stored chunks (12, 14) or selected sub-chunks (25, 27) of the stored chunks (20, 22) for a previous, already played out part (3) of the streamed video bitstream (1) is or are discarded while keeping selected stored chunks (14) or selected sub-chunks (21, 23) stored as navigation tune-in points. The usage of selected stored chunks (14) or sub-chunks (21, 23) that are not discarded from the already played out part (3) of the streamed video bitstream (1) enables a low delay solution during video navigation when a user wants to jump to a previously played out position (5) within the streamed video bitstream (1).

Abstract: A pixel pre-processing comprises subsampling a linear color in a first color space to obtain a subsampled linear color in the first color space. A first transfer function is applied to the subsampled linear color in the first color space to obtain a subsampled non-linear color in the first color space. A first color transform is applied to the subsampled non-linear color in the first color space to obtain a subsampled first non-linear chroma component value and/or a subsampled second non-linear chroma component value in a second color space. A non-linear luma component value in the second color space is derived for the pixel, which together with the subsampled non-linear chroma component values represent a color the pixel. The pre-processing reduces chroma artifacts that may otherwise occur when chroma subsampling is performed following application of the first transfer function and the first color transform.

Abstract: A communications device (110) for generating a key for use as a shared secret in communications with another communications device (120) is provided. Each of the communications devices (110, 120) comprises a sensor array (111, 121) for measuring a spatially-varying magnetic field (320) originating from a first spatially-varying density of metallic particles comprised in a first battery (113), when subjected to an excitation magnetic field, and processing means operative to acquire a set of values from the sensor array (111, 121), which set of values represents the spatially-varying magnetic field (320), and to derive the key from the set of values. The excitation magnetic field (310) is generated by a magnetic-field generator (114) comprised in one of the communications devices (110, 120). Thereby, the two communications devices (110, 120) may, when in proximity, generate identical keys by probing the spatially-varying density of metallic particles comprised in the first battery (113).

Abstract: A method of encoding a pixel comprises encoding second and third color component values of the pixel in a first color space. A first color component value in a second color space is obtained for the pixel. A first color component value in the first color space is determined based on minimizing an error computed based on a difference between the first color component value in the second color space and a test color component value in the second color space derived based on the encoded second and third color component values. The first color component value in the first color space is then encoded. The target value for coding of the first color component is thereby adapted given encoding of the second and third color components. As a result the visual quality of the pixel is improved.

Abstract: A wirelessly chargeable device, such as a smartphone, and a wireless-charging device are provided. The wirelessly chargeable device and the wireless-charging device comprise holding means for generating an attractive force between the wirelessly chargeable device and a charging surface of the wireless-charging device, so as to prevent displacement of the wirelessly chargeable device when placed on the charging surface, and processing means operative to release the wirelessly chargeable device from the charging surface in response to determining that a user intends to remove the wirelessly chargeable device from the charging surface. Advantageously, the wirelessly chargeable device may to be placed on a charging surface which is substantially vertical when in operation, effectively eliminating the need for manually securing the wirelessly chargeable device in order to prevent the wirelessly chargeable device from falling.

Abstract: It is presented a method for applying a filter on at least one colour component of an input signal used for video processing. The method is performed in a filter device and comprises the steps of: converting the input signal, by applying a first conversion process, to a modified signal, wherein both the input signal and the modified signal are in a spatial domain; filtering the modified signal with a filter, yielding a filtered signal; and converting the filtered signal, by applying a second conversion process, to an output signal, wherein the output signal is in a spatial domain.

Abstract: A method of processing pixels in a picture of a video sequence comprising multiple pictures comprises identifying a pixel to be processed in the picture for which a variation in a linear representation of a color of the pixel that is smaller than a first threshold value results in a variation in a non-linear representation of the color that is larger than a second threshold value. The variation in the linear representation of the color also results in a variation in a luminance and chrominance based representation of the color that is smaller than a third threshold value. The method also comprises processing the identified pixel by modifying a value of at least one color component of the pixel. The method achieves a selective denoising of particular color components in certain situations to reduce the encoding cost yet do not significantly affect the visual quality.

Abstract: A device (100) for handheld operation, such as a mobile phone, a mobile terminal, a smartphone, a User Equipment (UE), a tablet, a phablet, a media player, a remote control, or a gaming console, is provided. The device is operative to detect an imminent or prevailing indication of an unstable operation of the device when being held by a hand (110) of a user of the device, and, in response thereto, to increase a grip between an outer surface (101, 103) of the device and one or more fingers (111-114) of the hand. The grip may, e.g., be increased by generating an adhesive force, or by increasing a friction, between the outer surface and the one or more fingers. Thereby, the risk for the user dropping the device is reduced, and a more convenient operation of the device is achieved, in particularly if operated single-handedly.

Abstract: A multi-view display controller determines view angles for each view of a multi-view media content for each viewer watching a multi-view display. The view angles determined for a viewer collectively define a viewer cone that displays the views onto the viewer. Media data of the multi-view media content is output together with information of the determined view angles to the multi-view display in order to allow each viewer to have the same experience of displayed media content regardless of where the viewer is positioned relative to the multi-view display.

Abstract: The present embodiments introduce a new type of random access point in video bitstreams that can be used for random access operations but can be represented in encoded form at a lower bit cost as compared to IRAP pictures. The random access point is a dependent random access point (DRAP) picture that is encoded and decoded as a temporal predictive picture using an IRAP picture and/or a previous, according to a decoding order, DRAP picture as sole reference picture(s) for the DRAP picture. The DRAP picture constitutes a random access point in a video bitstream.