Abstract: Methods and apparatus are provided for secure communication techniques in a communication system. The system can include a first device which communicates with a second device over a channel. A security association can be established during a first session between the devices via an asymmetric key exchange. The security association comprises a Traffic Encryption Key (TEK) and a first state vector. The TEK comprises a shared, secret symmetric key. The security association is stored in each of the devices for use during a second session between the devices to expedite security association establishment during call set-up of the second session. The security association can be associated with the second device in the first device, and with the first device in the second device. An updated state vector can be generated at the first device. A second session can be established between the first device and the second device by using the TEKs from the first session and the updated state vector.

Abstract: Techniques are provided for secure group communications in a wireless dispatch system which includes a group of devices. The group of devices can include a first secure device which communicates with a plurality of second secure devices over a channel.

Abstract: An encryption capable communication device (10) can include a transceiver (38 and 44) and a processor (12) coupled to the transceiver. The processor can be programmed to receive notification of a secure call alert indicative of a desire for secure communications between an alerting device and the encryption capable communication device serving as a recipient device and further cause the recipient device to switch (64) to a secure mode in response to receipt of the notification. The processor can be further programmed to initiate a key exchange (67) between the alerting device and the recipient device if needed and automatically respond (70) to the secure call alert by the recipient device in the secure mode when a user of the recipient device selectively responds to the secure call alert. The processor can also establish a symmetric traffic key during the key exchange using Automatic Public Key exchange techniques.

Abstract: A method (400, 500) of advertising. The method can include communicating to a client (106) a hyperlink corresponding to a virtual world (300) and associating with the hyperlink an identifier corresponding to an advertisement (302) to be presented to a user (108) in the virtual world during a user session. The method also can include identifying an identifier (114) corresponding to an advertisement to be displayed in a virtual world during a user session in response to receiving a request (116) from a client identifying a uniform resource identifier corresponding to the virtual world, and presenting the advertisement within the virtual world during the user session. A method (600) of providing financial incentives for advertising can include receiving an advertising activity indicator (120, 122) and processing the advertising activity indicator to determine financial incentives to be provided to an entity associated with the website.

Abstract: An electronic device (160) and method (400) is provided for podcast searching and selecting. The electronic device can provide a display (210) for visualizing podcast attributes and presenting one or more visual icons (350) in a three-dimensional grid (320), wherein a visual icon identifies one or more attributes of a podcast. The electronic device can include a podcast browser (220) for searching and selecting one or more visual icons presented in the display, where the podcast browser provides multi-level viewing for the one or more visual icons.

Abstract: A system (160) and method (400) is provided for podcast quoting. The method can include quoting (410) a segment from a media source to produce a quoted segment (399), creating (420) a specification (500) for the quoted segment, and inserting (430) the quoted segment into a podcast (306) in accordance with the specification. A source (302) of the quoted segment, a start time (311), an end time (322), and an insertion point (333) can be included in the specification.

Abstract: A system (20) of targeted broadcasting in a cellular communication system during an event can include at least one mobile unit (25) having stored therein scheduling information relating to an event, a designated location for the event, and a designated group channel for monitoring such event. The mobile unit can further be programmed to monitor (67) for the event in a designated location and on a designated group channel during a predetermined time window and receive (71) a targeted message during the event on the designated group channel if a current location of the mobile unit matches the designated location stored. The mobile unit can be programmed to transmit at least one group call message response in response to receiving the group call message only when the mobile unit is in the designated location. The system can further include fixed network equipment (26) that transmits data related to the event.

Abstract: A method (50) for creating a hotlist (28) and portable communication device (10) having a hotlist feature comprises a display (30) for displaying the hotlist and a processor (12) coupled to the display. The processor can be programmed to track calls (52) made from the portable communication device and maintaining a recent call list (14) and reorder (66) the recent call list using entries stored in association with other programs (56, 58, 60, or 62) within the portable communication device. The processor can be further programmed to track frequent calls and promote the frequent calls in the hotlist based on at least one among a frequency of the frequent calls, a timeframe of the frequent calls, a freshness of the frequent calls, an entry of the frequent call in a calendar program, and an entry of the frequent call in a ToDo list.

Abstract: A selective call device (100) has a plurality of first alerts and a second alert and includes a decoder/controller (106) generating a plurality of icons associated with the plurality of first alerts and the second alert (116) and a switch for selecting an alert. The decoder/controller (106), in response to the switch (118), positions a second alert icon adjacent to a selected icon when the selected icon is not the second alert icon. A display (108) displays the second alert icon adjacent to the selected icon and the decoder/controller (106) regenerates the plurality of icons wherein the second alert icon is repositioned adjacent to a reselected alert icon.

Abstract: In a communication system that transmits diversity messages (an original message followed by one or more copies thereof), a selective call receiver (10) which receives an original message and one or more copies will display only one of the received messages and discard the others without displaying them. This is accomplished by storing in a memory (30) the identification tag of the message that was displayed and deleted. The identical identification tags carried by later copies of the same message are compared to the stored identification tag. If a match is found, this indicates that an earlier version of the received message has already been displayed and deleted, whereupon the received copy is discarded.

Abstract: A T1 based digital transmission system includes audio subchannel embedded signalling, instead of "robbed bit" signalling, to transmit signalling information along with voice communications. Signalling bits are produced in a sub-audio range and combined with voice information signals in the audio range. The resultant signal is transmitted over a T1 link to a receiver which recovers the signalling bits and voice information signals. The technique can be applied using adaptive pulse code modulation to increase the number of channels. A digital signal processor can implement channel functions.

Abstract: In a data processing system, including a memory subsystem and a CPU subsystem coupled to the memory subsystem for processing program instructions stored in the latter, the present disclosure describes an arrangement for improving the handling of type 1 dyadic instructions in the CPU subsystem. Type 1 dyadic instructions generally involve the logical processing of two operands in the CPU, and the writing of an associated result function to a designated location in memory at which one of the two operands originated. In accordance with the present invention, the result is compared with the origin operand at an appropriate instant in the instruction execution sequence and the writing operation is conditioned on this comparison. If the compared values are different the writing operation is allowed to continue, but if the compared values are equal the writing operation is skipped; thereby eliminating CPU and memory operating cycles otherwise required for completing the writing action.