Configurable serial memory interface
First Claim
1. A mobile communications device comprising:
- a removable memory device housed at least partially within a port in the mobile communications device having a primary processing device, wherein the removable memory device includes audio information stored in a memory resident in the removable memory device; and
a configurable serial interface in the mobile communications device, wherein the configurable serial interface is configured in a first mode to transfer the audio information from the removable memory device and output through a rendering device when the processing device is in an active power mode and the configurable serial interface is configured in a second mode to convert the audio information for output on the rendering device when the processing device is in a reduced power mode.
3 Assignments
0 Petitions
Accused Products
Abstract
A configurable serial interface for a mobile communications device is provided to access audio information (e.g., audio files) stored on a removable memory device. In normal operation, the mobile communications device accesses audio information stored on the removable memory source through a conventional serial interface located in the digital application processor and/or directly interfaced with the main processing device. The interface is configurable to change to a second interface (e.g., Serial Low-power Interconnect for Media or SLIMbus (SLIMbus)) after receiving a command to change the interface. The second interface generally utilizes significantly less power than the first interface because the main processing device is not utilized to convert the digital audio files stored on the removable memory device. Control of the first and/or second interface may be maintained by a control circuit used for controlling the main processing device.
-
Citations
21 Claims
-
1. A mobile communications device comprising:
-
a removable memory device housed at least partially within a port in the mobile communications device having a primary processing device, wherein the removable memory device includes audio information stored in a memory resident in the removable memory device; and a configurable serial interface in the mobile communications device, wherein the configurable serial interface is configured in a first mode to transfer the audio information from the removable memory device and output through a rendering device when the processing device is in an active power mode and the configurable serial interface is configured in a second mode to convert the audio information for output on the rendering device when the processing device is in a reduced power mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method for rendering audio information stored on a removable memory device housed in a mobile communications device, the method comprising:
-
receiving a request for audio information stored on a removable memory device; transferring the audio information to an audio rendering device through a configurable serial interface, wherein in a first mode the audio information is converted by a processing device operating above a predetermined rate; and
in a second mode the audio information is converted by a separate converter when the processing device is operating below a predetermined rate; andrendering the audio information received from the first mode and/or the second mode through the audio rendering device in a user sensible format. - View Dependent Claims (11, 12, 13, 14, 15, 16)
-
-
17. A mobile communications device comprising:
-
a removable memory device housed at least partially within a port in the mobile communications device having a primary processing device, wherein the removable memory device includes audio information stored in a memory resident in the removable memory device; a processing device for converting the audio information from a digital state to an analog state for rendering by an audio rendering device in a first mode; a converter for converting the audio information from the digital state to the analog state for rendering by the audio rendering device in a second mode; and a configurable serial interface selectively operable to route the audio information from the removable memory device in the first mode or second mode depending on the status of the processing device. - View Dependent Claims (18, 19, 20, 21)
-
Specification