Selective call receiver with database capability

• US 5,426,424 A
• Filed: 05/08/1992
• Issued: 06/20/1995
• Est. Priority Date: 05/08/1992
• Status: Expired due to Term

• Current Assignee: Motorola Mobility, Inc. (Lenovo Group Ltd.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Halley, Craig C., Vanden Heuvel, Dean P.
• Primary Examiner(s): Yusko, Donald J.
• Assistant Examiner(s): MERZ, EDWARD W
• Application Number:
  US07/880,614
• Time in Patent Office: 1,138 Days
• Field of Search: 340/825.44, 340/311.1, 379/57, 379/201, 379/211, 379/67, 379/88, 379/89, 364/401
• US Class Current: 340/7.52
• CPC Class Codes: G08B 5/227 with call or message storage means
• CPC Class Codes: H04W 88/023 with message or information receiving capability

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. An access manager (120) controls access to received selective call messages by grouping received messages by classification as determined at least in part by a portion of the received selective call message and the database configuration message (301, 302).

Claims

1. A selective call receiver for facilitating storage and presentation of at least one received selective call message, the selective call receiver comprising:

a microcontroller including a processor that executes a microcode program for controlling operation of the selective call receiver;

at least one memory coupled to the microcontroller for storing the at least one received selective call message;

a memory manager coupled to the microcontroller for controlling allocation and deallocation of at least one memory block in the at least one memory, each memory block corresponding to a memory storage area capable of storing at least a portion of the at least one received selective call message, the memory manager operating to maintain a dynamic list representing used and unused memory blocks, the dynamic list being initialized in response to receipt of a database configuration message and updated in response to subsequent received selective call messages; and

an access manager coupled to the microcontroller for controlling access to the at least one received selective call message stored in the at least one memory by grouping the at least one received selective call message in at least one classification as determined at least in part by a portion of the at least one received selective call message and the database configuration message.

2. The selective call receiver according to claim 1 wherein the memory manager comprises:

at least one root array register with contents comprising;

a message status indicator, a database identifier, and a control area register identifier.

3. The selective call receiver according to claim 1 wherein the memory manager comprises:

at least one control area register with contents comprising;

a type of the at least one memory block, a memory bank identifier indicating a memory bank location, an index to the dynamic list representing used and unused memory blocks, and a data identifier indicating a memory location for the data.

4. A selective call receiver, comprising:

a receiver for providing a received signal;

a demodulator for recovering the received signal and providing a received selective call message;

a decoder for correlating a recovered address contained within the received selective call message with a predetermined address recovered from a non-volatile memory associated with the selective call receiver, the predetermined address being the selective call receiver'"'"'s address;

a microcontroller coupled to the decoder, the microcontroller having a processor that executes a microcode program for controlling operation of the selective call receiver and facilitates presentation of the received selective call message;

at least one memory coupled to the microcontroller for storing the received selective call message;

a memory manager coupled to the microcontroller for controlling allocation and deallocation of at least one memory block in the at least one memory, each memory block corresponding to a memory storage area capable of storing at least a portion of the at least one received selective call message, the memory manager operating to maintain a dynamic list representing used and unused memory blocks, the dynamic list being initialized in response to receipt of a database configuration message and updated in response to subsequent received selective call messages; and

an access manager coupled to the microcontroller for controlling access to the at least one received selective call message stored in the at least one memory by grouping the at least one received selective call message in at least one classification as determined at least in part by a portion of the at least one received selective call message and the database configuration message.

5. The selective call receiver according to claim 4 wherein the memory manager comprises:

at least one root array register with contents comprising;

a message status indicator, a database identifier, and a control area register identifier.

6. The selective call receiver according to claim 4 wherein the memory manager comprises:

at least one control area register with contents comprising;

a type of the at least one memory block, a memory bank identifier indicating a memory bank location, an index to the dynamic list representing used and unused memory blocks, and a data identifier indicating a memory location for the data.

7. In a selective call receiver, a method for facilitating storage and presentation of at least one received selective call message comprising the steps of:

(a) executing a microcode program in a microcontroller having a processor, the microcontroller being coupled to at least one memory for storing the at least one received selective call message, and the microcode program operating to control operation of the selective call receiver;

(b) controlling allocation and deallocation of at least one memory block in the at least one memory with a memory manager coupled to the microcontroller, each memory block corresponding to a memory storage area capable of storing at least a portion of the at least one received selective call message, the memory manager operating to maintain a dynamic list representing used and unused memory blocks, the dynamic list being initialized in response to receipt of a database configuration message and updated in response to subsequent received selective call messages; and

(c) controlling access to the at least one received selective call message stored in the at least one memory with an access manager coupled to the microcontroller by grouping the at least one received selective call message in at least one classification as determined at least in part by a portion of the at least one received selective call message and the database configuration message.

8. The method according to claim 7 wherein step (b) comprises the step of:

at receiver initialization;

releasing all memory associated with the dynamic list resulting in all personal message and database control area indentifiers being set to unused, thereby freeing all available memory blocks for data storage.

9. The method according to claim 7 wherein step (b) comprises the step of:

creating a selective call database, comprising the steps of;

receiving the database configuration message comprising a database creation command and a database ID;

allocating a root array register in response to the database creation command, the root array register comprising entries denoting the database ID, a message type icon to display, and a control register ID;

allocating at least one control node in a control register in response to the database creation command, the at least one control node comprising entries denoting a memory block type, a memory bank ID, a free list index, and a message data ID;

updating a free list to reflect use of memory by the at least one control node; and

storing subsequently received database data update messages of a same database ID in memory blocks allocated in response to entries in the root array register.

10. The method according to claim 7 wherein step (b) comprises the step of:

deleting a selective call database, comprising the steps of;

receiving the database configuration message comprising a database delete command and a database ID;

deallocating at least one control node identified in a root array register in response to the database delete command, the at least one control node having a database ID corresponding to the database ID associated with the database delete command, leaving at least one unallocated control node in place of the at least one control node;

adjusting any remaining control nodes following the at least one unallocated control node to maintain a contiguous control node list in the control register;

updating a free list to reflect availability of memory previously reserved by the at least one control node;

clearing all contents of the root array register corresponding to the database ID associated with the database delete command.

11. The method according to claim 7 wherein step (b) comprises the step of:

updating a selective call database, comprising the steps of;

receiving a database data delivery selective call message comprising a database update message and a database ID;

inspecting a control register and at least one control node associated with the database ID to determine if a memory block is already allocated for the database update message;

allocating at least one control node in a control register if the memory block has not been allocated, the at least one control node comprising entries denoting a memory block type, a memory bank ID, a free list index, and a message data ID;

updating a free list to reflect use of the memory block by the at least one control node; and

storing at least a portion of the received database update message in the memory block allocated in response to entries in the at least one control node.