Abstract: Described herein are techniques for adding adaptive annotations to an electronic content item. For example, a user may insert an annotation by hand drawing the annotation over the content of the content item, in white space around the content, or within an annotation window. The user may also anchor, associate, or link annotations to particular portion of the content item, such that when the content is displayed or rendered on a display of an electronic device, the annotation appears in-line with the content and adjacent to the associated portion.

Abstract: Virtual bookmarks can be set in digital content to enable a user to quickly locate a portion of interest. A user can provide an input to enter into an overview mode wherein multiple pages of content are displayed concurrently. The user can navigate through the pages, and when a bookmarked page is caused to no longer appear on the display an overlay element such as a thumbnail of the page can be positioned near the edge of the display, representing the current relative location of the page in the overview. A user can select one of the displayed pages to view, or can select the bookmark overlay element to return to the current page. A user can perform an action to cause the bookmarked page to be updated, or can perform various actions to cause multiple bookmarks to be created with respect to the content.

Abstract: Some implementations include identifying conflicts between multiple layers of supplementary content associated with a digital work (e.g., an electronic book). For individual conflicts between layers of supplementary content at one or more locations within the digital work, conflicts between layers may be resolved in favor of a higher priority layer. Upon resolution of the conflict, information associated with the higher priority layer for supplementing content at a particular location in the digital work may be determined. A visual identifier of the higher priority layer may be displayed along with content associated with the digital work at the particular location.

Abstract: Virtual bookmarks can be set in digital content to enable a user to quickly locate a portion of interest. A user can provide an input to enter into an overview mode wherein multiple pages of content are displayed concurrently. The user can navigate through the pages, and when a bookmarked page is caused to no longer appear on the display an overlay element such as a thumbnail of the page can be positioned near the edge of the display, representing the current relative location of the page in the overview. A user can select one of the displayed pages to view, or can select the bookmark overlay element to return to the current page. A user can perform an action to cause the bookmarked page to be updated, or can perform various actions to cause multiple bookmarks to be created with respect to the content.

Abstract: Virtual bookmarks can be set in digital content to enable a user to quickly locate a portion of interest. A user can provide an input to enter into an overview mode wherein multiple pages of content are displayed concurrently. The user can navigate through the pages, and when a bookmarked page is caused to no longer appear on the display an overlay element such as a thumbnail of the page can be positioned near the edge of the display, representing the current relative location of the page in the overview. A user can select one of the displayed pages to view, or can select the bookmark overlay element to return to the current page. A user can perform an action to cause the bookmarked page to be updated, or can perform various actions to cause multiple bookmarks to be created with respect to the content.

Abstract: A device is configured to display electronic sheet music. The device may display electronic sheet music that can be magnified and displayed in sequence by reflowing electronic musical symbols between pages. In addition, the device may adaptively determine a layout based on user preferences, such as a desired magnification, an orientation of a device or the like, and may display a current location in the electronic sheet music based on user input, a remote trigger, a desired playback speed or by monitoring an audio input from a microphone and determining a current location in the electronic sheet music. For example, the device may detect a series of pitches and display the electronic sheet music based on a most recent pitch in the series of pitches.

Abstract: Described herein are techniques for adding adaptive annotations to an electronic content item. For example, a user may insert an annotation by hand drawing the annotation over the content of the content item, in white space around the content, or within an annotation window. The user may also anchor, associate, or link annotations to particular portion of the content item, such that when the content is displayed or rendered on a display of an electronic device, the annotation appears in-line with the content and adjacent to the associated portion.

Abstract: Heat removal is accomplished by utilizing a first metal conductive pad to conduct the heat from an electrical component. The first pad is juxtaposed and thereby thermally coupled by convection to one or more ground pads having plated through holes to a ground plane and heat sink.

Abstract: A two-stage, interstage transformer-coupled amplifier is provided with a degeneration resistor coupled between the collector of the first stage transistor and the power supply to limit the power dissipated in the first stage transistor. The first and second stages are coupled to ground through capacitor/inductor circuits to eliminate signal noise in the supply voltage. The output is filtered to remove harmonics and provide output impedance matching.

Abstract: Hybrid RF amplifiers of improved performance are obtained by arranging film resistors, metallization and other components on a circuit board so that symmetrical parts of the electrical circuit are arranged in a mirror symmetrical fashion about a line extending along the circuit board and by aligning symmetrical resistors either parallel or orthogonal to this line and by utilizing common ground metal regions to terminate resistors that are aligned and orthogonal to the mirror line and spaced apart but joined to a common ground at a single location.

Abstract: Electrically insulating but thermally conductive "heat shunt" components are attached to PC boards along with regular electronic components to improve heat dissipation. The heat shunts are typically a small bar of thermally conductive ceramic with spaced-apart metal mounting pads on the ends for soldering to the PC board. Their shape is similar to standard electronic components for placement by automatic machinery and they extend, for example, from a transistor collector contact pad on the PC board to an adjacent ground lead having holes plated through to the metal back plane of the PC board in contact with the heat sink.