Abstract: A transmitter adds packet transmission order information to transmitted packets using a forward error device (416) and a masking device (420). The masking device (420) receives ordering masks (610) from a mask store (424). The ordering masks (610) are maintained in a known order, and the ordering masks (610) and the known order are known to both the transmitter and the receiver. The receiver includes an unmasking device (504) that applies ordering masks to unmask the packets, and then an error detection device checks for errors. The ordering masks (610) are applied in the known order until errors are below an acceptable limit. When errors are below an acceptable limit, the relative packet order is determined from the known order of the ordering masks.

Abstract: Multiple format secure voice apparatus for communication handsets includes a core unit with a speaker, a microphone, a keypad, and a display. The core unit also includes an audio circuit coupled to the speaker and the microphone, an encryption/decryption element coupled to the audio circuit, a coder/decoder element coupled to the audio circuit and the encryption/decryption element, and a control element coupled to the keypad, the display, the audio circuit, the encryption/decryption element, and the coder/decoder element. A standard interface coupling is connected to an audio I/O terminal, a data I/O terminal of the coder/decoder element, and a control I/O terminal of the control element. A mating standard interface coupling mates with the standard interface coupling of the core unit and is coupled to the mating standard interface coupling.

Abstract: Multiple format secure voice apparatus for communication handsets includes a core unit with a speaker, a microphone, a keypad, and a display. The core unit also includes an audio circuit coupled to the speaker and the microphone, an encryption/decryption element coupled to the audio circuit, a coder/decoder element coupled to the audio circuit and the encryption/decryption element, and a control element coupled to the keypad, the display, the audio circuit, the encryption/decryption element, and the coder/decoder element. A standard interface coupling is connected to an audio I/O terminal, a data I/O terminal of the coder/decoder element, and a control I/O terminal of the control element. A mating standard interface coupling mates with the standard interface coupling of the core unit and is coupled to the mating standard interface coupling.

Abstract: A selective call receiver (30) receives personal messages and information services provided database messages. A memory (44) stores the personal messages in a first portion (46) and the database messages as a plurality of screens in a second portion (48). A display (42) displays the plurality of screens for the user's perusal. To display a screen, the user can navigate through the plurality of screens manually through activation of user input controls (40) when operating in a database mode under the control of a controller (52). Alternatively, user selected screens can be directly accessed by placing operation of the receiver (30) under the control of a quick view controller (60) coupled to the database portion of memory (48) and the display (42). The quick view controller (60) allows manual selection of user selected screens or, in an automatic mode, sequentially displays the user selected screens.

Abstract: A selective call receiver (30) receives personal messages and information services provided database messages. A memory (44) stores the personal messages in a first portion (46) and the database messages as a plurality of screens in a second portion (48). A display (42) displays the plurality of screens for the user's perusal. The user can display the screens manually through activation of user input controls (40) when operating in a database mode under the control of a controller (52). Alternatively, the user can display selected screens in a quick access or quick view mode by placing operation of the receiver (30) under the control of a quick view controller (60) coupled to the database portion of memory (48) and the display (42). The user can selectively flag a screen (FIG. 9) or trigger a numeric field of a screen (FIG. 16) via activation of user input controls (40) when operating in a database mode under the control of a controller (52).

Abstract: A selective call receiver (100) for facilitating storage and presentation of a received selective call message. A microcontroller (105) executes a microcode program that controls operation of the selective call receiver (100). Received messages are stored by a memory manager (119) in a memory (115) coupled to the microcontroller (105). The memory manager (115) allocates and deallocates memory blocks, each block corresponding to a memory storage area (504) capable of storing at least a portion of the received message. The memory manager (119) also maintains a dynamic list (505) representing used and unused memory slots, the list being initialized in response to receipt of a database configuration message (301, 302) and updated in response to subsequent received selective call messages.

Abstract: In a selective call receiver for presenting a plurality of messages to a user, a method comprises the steps of receiving (205) a message, storing (208) the received message in a memory, and determining (210) whether the received message is substantially equivalent to previously stored messages. A further step includes displaying (225) a duplicate message icon if the received message is a duplicate message that is substantially equivalent to one of the previously stored messages.

Abstract: In a selective call receiver (110) for receiving selective call messages, a method for generation and notification of tag information comprises the steps of receiving (310) a selective call message and generating (345, 355) tag information in response to receiving the message. A further step includes providing (350) the tag information to an interface (250) for coupling to an exterior electronic device (410).