MXPA94006609A - Method and apparatus for prioritizing deletion of messages received based on the source and on the mens - Google Patents

Abstract

The present invention relates to a method, in a radio receiver to receive messages from a plurality of sources, to prioritize the erasure of received messages, the method comprises the steps of: naming each of the plurality of fixed sources and not fixed, and put flags in at least the last message received from fixed sources as fixed messages, where fixed messages are deleted only after deleting saved messages that have no flag as fixed messages, where each of at least the last automatically received message is flagged without user input, in response to receipt of each of at least the last received message

Description

"METHOD AND APPARATUS FOR PRIORITIZING THE DELETION OF MESSAGES RECEIVED BASED ON THE SOURCE AND IN THE ORDER OF THE MESSAGE" ASSIGNEE: MOTOROLA, INC., SOCIEDAD DE NACIONALIDAD NORTEA MERICANA, WITH ADDRESS AT: 1303 EAST ALGONQUIN ROAD, SCHAUMBURG, ILLINOIS 60196, E. U. A.

INVENTORS: NICHOLA B. HOSACK, CITIZEN OF THE UNITED STATES OF AMERICA, WITH ADDRESS AT: 10331 N, 48th COURT, CORAL SPRINGS, FtORIDA 33076, E. U. A.

GREGORY L. CANNON, CITIZEN OF THE UNITED STATES OF AMERICA, WITH ADDRESS AT: 944 BROOKDALE DRIVE, BOYNTON BEACH, FLORIDA 33435, E. U. A.

EDWARD H. ROBINSON, CITIZEN OF THE UNITED STATES OF AMERICA, WITH ADDRESS AT: 1525-P SPRING HARBOR DRIVE, DELRAY BEACH, FLORIDA 33445, E. U. A.

RI.CHARD A. HILL, CITIZEN OF THE UNITED STATES OF AMERICA, WITH ADDRESS AT: 3510 EMERALD POIN TE DR. APT. 104A, HOLLYWOOD, FLORIDA 33021, E. U. A.

NANCY E. MONDROSCH, CITIZEN OF THE UNITED STATES OF AMERICA, WITH ADDRESS AT: 944 BROOKDALE DRIVE, BOYNTON BEACH, FLORIDA 33435, E. U. A.

WILLIAM J. MACKO, CITIZEN OF THE UNITED STATES OF AMERICA, WITH ADDRESS AT: 936 WHIPPOORWILL TRAIL, WEST PALM BEACH, FLORIDA 33411, E. U. A.

SUMMARY The radio receiver (110) for receiving messages from a number of sources comprises a message database (252 for storing messages and sources from which the messages are controlled) and a processing unit (220) for determining if each of the sources is fixed or not fixed, the processing unit (220) indicates below, with a flag, the messages received last from the fixed sources to indicate that the messages received last are messages Fixed that only non-fixed messages that are not signaled as fixed messages should be erased only after deletion.

FIELD OF THE INVENTION This invention relates in general to radio devices for receiving and storing messages, and in particular, to methods for prioritizing the suppression of received messages.

BACKGROUND OF THE INVENTION Selective-call receivers, such as the beloved radiol-1 receivers, generally receive a radio-frequency signal that is decoded to retrieve an address and a message included in it. Generally, when the received address corresponds to the address of the stored receiver, the received message is stored in the memory of the selective call receiver. Additionally, after receiving and storing a message, the selective call receiver provides a sensitive alert, such as an audible tone, to announce the user the reception of the message. From there, in more, either automatically or in response to commands initiated by the user, the message is retrieved from memory and presented to the user. The presentation of the message 'may be, for example, a visual presentation in a viewer or may be an audible presentation by means of the transducer.

As subsequent messages are received, each one is processed in the manner described above. As a result, situations may arise in which the memory of the selective call receiver is filled, for example, that there is no available memory space. In this case, some conventional selective call receivers need to erase old messages to free space from memory to store new received messages. This method of deletion, however, can easily result in the deletion of a message before it has been read, or the deletion of a message that is of importance to the user.

Therefore, what is needed is a method and an apparatus to prioritize the erasure of stored messages.

SUMMARY OF THE INVENTION A radio receiver receives messages from a number of sources. A method in the radio receiver to prioritize the order of erasure for received messages, comprises the steps to designate each of the different sources as fixed sources or non-fixed sources, and to have a flag signal for at least the received messages in last place from fixed sources, where fixed messages are deleted only after the erasure of stored messages that were not signaled as fixed messages.

A radio receiver for receiving messages from a number of sources comprising a message database for storing messages and the sources from which the messages originate, and a processing unit for determining whether each source has a fixed state or do not. The processing unit then displays a flag for every last message received from the fixed sources to indicate that the messages received last are fixed messages that are to be deleted only after the deletion of the non-fixed messages, which are not signaled as fixed messages.

BRIEF DESCRIPTION OF THE DIAGRAMS Fig. 1 is an illustration of a radio call system according to the preferred composition of the present invention.

Fig. 2 is an electrical block diagram of a radio receiver included in the radio call system of Fig. 1 according to the preferred composition of the present invention.

Figs. 3 and 4 are flow diagrams illustrating the message receiving operation of a central processing unit included in the radio receiver of Fig. 2 according to the preferred composition of the present invention.

Fig. 5 is a table showing examples of messages that could be stored in the radio receiver according to the preferred composition of the present invention.

Fig. 6 is a table showing the order of deletion of the messages of Fig. 5 according to the preferred composition of the present invention.

Fig. 7 is a flowchart illustrating the programming of the source states of the sources from which the messages are received in the radio receiver of Fig. 2 according to the preferred composition of the present invention.

Fig. 8 is an illustration of a source status screen shown by the radio receiver of Fig. 2 according to the preferred composition of the present invention.

Fig.9 is a flow chart illustrating the operation of the central processing unit when displaying the messages in the viewer according to the alternative composition of the present invention.

Fig. 10 is a table showing the order of the message display for the example messages of Fig. 5 according to the alternative composition of the present invention.

Fig. 10 is a table showing the order of message display for the example messages of Fig. 5 according to the alternative composition of the present invention.

DESCRIPTION OF THE PREFERRED COMPOSITION » Fig. 1 is an illustration of the radio call system 100 for radio frequency (RF) communications. The radio call system 100 preferably comprises a radio call terminal 105 for encoding information using a signal register with the POCSAG register (Code Standardization Advisory Group of the Post Office) or the registration of the GSC (Goíay Sequential Code). The encoded information is then modulated and transmitted by an antenna 108 as an RF signal, which is received by radio call receivers 110 included in the radio call system 100.

The information can enter the radio call system 100 from a variety of sources, for example, from a conventional telephone 115 connected to the radio call terminal 105 by means of a telephone system, such as for example the Public Switched Telephone Network (PSTN). 120 Additionally, the radio call terminal 105 may receive information from other sources, such as the information service provider 125 that provides current information, stock, etc., in the form of a database, or a personal computer 130 connected to the PSTN. 120 by means of a modem 135. A data entry device 140 directly connected to the radio call terminal 105 can be used to provide radio call information to the radio call terminal 105 or modify the operational information stored by the radio call terminal 105. The operational information can be, for example, a list of the subscribers to the radio call system 100 or the account status of each subscriber.

An electrical block diagram of a radio receiver 110 included in the radio call system 100 is illustrated in FIG. 2. The radio call receiver 110 preferably comprises an antenna 205 for receiving an RF signal transmitted by the radio call terminal 105 and for provide the signal to the receiver 210 that demodulates the signal to generate the data there. A decoder 215 connected to the receiver 210 decodes the RF signal to recover the radio call information, which typically is formed by a message and address associated with the radio receiver 110. The central processing unit (CPU) 220 connected to the decoder 215 processes then the information to control the operation of the radio receiver 100.

The radio receiver 110 further comprises a timer circuitry for generating time values used by the CPU 220 during the operation of the radio receiver 110. The timer circuitry may include, for example, a crystal (not shown) for generate timing signals and an oscillator (not shown) to generate the time values. Then an alert 230 is connected to the CPU 220, such as a transducer or a vibrating motor to generate a sensitive alert that announces the reception of the message. The controls 235 connected to the CPU 220 and accessible from the outside of the radio receiver 110 repeat the user inputs to the CPU 220, in response thereto, the CPU 220 can transmit received messages to a viewer 240 to present it to the user.

In accordance with the present invention, a message separator 245 is connected to the CPU 220 to temporarily store a received message or address and the time associated with receiving the message. Preferably, the time is determined by the time values provided by the circuitry 225 in the manner well known in the medium. A memory, such as read-only memory (ROM) 250 or a programmable code card is used to store the addresses in which the radio receiver 110 can receive messages and to store sources associated with each of the addresses. Sources can be, for example, personal sources, business sources, or information. The messages of each of these types of sources are transmitted by the radio call terminal 105 (Fig. 1) to the radio receiver 110 with different addresses, so that the CPU 220 can determine the source of the message by decoding the address associated with the message and referring to the ROM 250. Alternatively, each message could have source information appended within the RF signal to send the message source to the CPU 220, or messages could be received from different sources at different predetermined frequencies or during different time slots during the transmission of the RF signal.

There is a message database 252 included later in the radio receiver 110. wherein the information stored in the message separator is moved when the space within the message database 252 is sufficient. As shown, the message database 252 preferably stores each message, the message source , which is preferably determined by references with the R'OM 250, and the time of reception of the message. In addition, the message database 252 stores an indication (an "r" is shown for read messages and a "u" for unread messages) indicating whether the message has been read by the user or not, and a flag (shown as an "a" that indicates if the message is "fixed", this will be explained later.

Preferably, the state database 255 is connected to the CPU 220 to store a list of each of the sources from which the radio receiver 110 can receive messages and a status of each of the sources as "fixed" or "it does not fix". According to the preferred composition of the present invention, a non-fixed state of a font indicates that the message should be stored, displayed in the viewer, and erased in the conventional manner. The fixed state of a source, however, can affect not only the order of deletion of the message, but also its display in the viewer. More - specifically, the CPU 220 designates the last received message in each fixed source as a fixed message for that source. In situations where the storage space within the message database 252 is insufficient to store an incoming message from the message separator 245, the fixed messages from * some fixed source will not be deleted until after the deletion of messages not fixed messages stored by the radio receiver 110. In addition, fixed messages that have not been read by the user will preferably not be deleted until after the erasure of the fixed messages read.

The CPU 220, the message separator 245, the message database 252, the state database 255, and the ROM 250 can be implemented using a microcoer 270, such as the MC68HC05 microcoer manufactured by Motorola, Inc. of Schaumburg , Illinois. Alternatively, the aforementioned elements can be implemented using a wired segment logic capable of performing equivalent operations. Additionally, the message separator 245, the message database 252, and the state database 255 can be implemented using a single memory device, such as random access memory (RAM).

Figs. 3 and 4 are flow charts illustrating the message reception operation of the CPU 220 according to the preferred composition of the present invention. With reference to Fig. 3, when in step 305, the CPU 220 receives an address and a message decoded by the decoder 215, the address in the step 310 is compared with the list of addresses stored in the RAM 250 to determine whether the address is one of which the radio receiver 110 is authorized to receive messages. When the received address is equivalent to the stored address, the CPU 220 receives in step 315, a time value indicating the time of reception of the message from the timer circuitry 225 (Fig. 2). The time, message, and address are stored in step 320 in the message separator 245.

Then, in step 325, the CPU determines, in the well-known way in the medium, whether the unused space in the message database 252 is sufficient to store the message information that now resides in the message separator 245. When the unused space is insufficient, the CPU 220 preferably proceeds, in step 330, to determine whether any read, non-fixed message is stored in the message database 252. When this happens, the non-fixed, oldest message that was read in step 335 is deleted from the message database 252; subsequently, the CPU 220 controls again, in step 325, the amount of memory available in the message database 252. when the message database 252 is full and there is no unread and unfixed message stored, the CPU 220 determines, in step 340, if any unread, non-fixed messages are stored in the message database 252. When this happens, the oldest, unread, and non-fixed message is deleted in step 345 When the message database 252 is full, and there is no stored non-fixed message, the CPU 220 determines in step 350 whether a read and fixed message is stored. If it determines that at least one read and fixed message is stored in the message database 252, the CPU 220 deletes in step 355, the oldest fixed read message. Finally, when the message database 252 is full, and it is determined in step 360 that only unread and fixed messages are stored in the message database 252, the CPU 220 preferably deletes the message in step 365. unread, fixed, oldest.

With reference to FIg. 4, when the CPU 220 determines that sufficient space exists within the message database 252, the incoming message, the reception time, and the associated source are stored within the message address in step 370 in the base of the message. message data 252. In accordance with the preferred composition of the present invention, the CPU 220 then determines, in step 375, whether the message source is fixed or not. When the message source is not fixed, the CPU 220 activates in step 380, the alert 230 (Fig. 2) to generate a sensitive alert announcing the reception of the message.

When the source of the message is a fixed source, the CPU 220 determines, in step 385, if some previous message was received from the same source, for example, if a fixed message for the same source was stored in the data base. message 252. When this happens, the "flag" or indication that the message was set is removed in step 390 of the fixed message previously received from the same source. When the flag has been removed from a previously received message from the same source, or when no message from the same source has been previously received, the current message from the source generates a flag in step 395. This flag indicates that the message in progress is fixed at that moment. Thereafter, the alert .230 is activated in step 380 to announce receipt of the message.

In this way, when the message database 252 has insufficient space to store an incoming message, messages in the message database 252 are deleted in an order determined first by the (fixed) status of the message sources. and then taking into account if the messages have been read by the user and lastly by the reception time. Therefore, a user of the radio receiver 110 can be assured that a fixed message, for example, the last message received from a designated source, will not be erased until all other types of messages have been necessarily deleted.

In the next Fig. 5 a table of example messages stored by the message database 252 is shown. In this example, the messages received by the radio receiver 110 are received from three sources: the personal service, the business service , and of stock. Regarding the reception time, it can be seen that, for the illustrative purpose only, the messages are sorted by the reception time, for example, the last message of the table was received first, and the first message of the table was the last received. The table further illustrates the status of each message (read "r", unread "u" and fixed or non-fixed ("a" for fixed). For this example, only the stock source is fixed and, accordingly , the last message received from the stock source is marked with an "a." In the actual implementation, it will be recognized "that a simple method to designate the status of the messages should allocate a first bit in each message memory space for the presentation state and assigning a second bit for the fixed state The first bit could, for example, be set to "one" to indicate that the message has been read and to "zero" to indicate that the message has not been read. Similarly, the second bit could normally be set to "zero" to indicate that a message is not fixed and "one" to indicate that it is fixed.

In the example message table of Fig. 5, the last received message ("Filters, INC Stock at 70") of the stock service is, according to the preferred composition of the present invention, advertised with a flag to indicate which is fixed. Therefore, this message, which is the only fixed message, will not be deleted from the message database 252 until all other messages have been deleted, which, if necessary, will be erased by the reception of time and the status of the message. presentation. This can be better understood if it refers to Fig. 6.

Fig. 6 is a table illustrating the order of erasing the messages of Fig. 5. As you can see, the non-fixed message that was read first would be, if necessary, first erased from the database 252. From then on, when all the non-fixed messages read have been deleted, the messages are not fixed, not readings would be deleted in an order determined by the reception time. Finally, the fixed messages read from the stock service would be deleted if necessary. Despite not being illustrated in this example, a fixed unread message from another fixed source would not be erased until the fixed messages read from the stock service were erased.

In this way, the user can prevent the deletion of messages received more recently from stationary sources. This is very convenient for situations in which the most recently received message is important to the user. This situation may arise, for example, when the last stock price or the news update are considered of greater importance than the prices of stock and current issues previously received. The use of non-fixed sources can also be useful for personal situations. For example, a child can tell his mother his last whereabouts. Previous stops, which no longer matter, could be erased before erasing the message indicating your last whereabouts.

The designation of fixed sources can be programmed, according to the needs of the user, by a service center where the radio receiver 110 is rented or purchased. Alternatively, the state of the sources could be programmable by the user through of the controls 235, as described in Fig. 7 and illustrated in Fig. 8.

Fig. 7 is a flow chart illustrating a way in which user controls could be manipulated by programming the state of the source. Fig. 8 is an illustration of a radio receiver 110 having controls 235 accessible to the user and a viewer 240 for displaying the information. The programming of the state of each source is initiated in step 405 (Fig. 7), when the user presses the control key 505 (Fig. 8) of the radio receiver 110. Pressing the key 505 sends a signal to the CPU 220 (Fig. 2), in response to this the CPU 220 provides in step 410, the display 240 with a source status screen, as shown in Fig. 8. The source status screen may, for example, Include a first line in which each receiver source is shown. After being displayed on the screen, most active sources are preferably highlighted by the cursor, such as underlined or boxed around the source, and the fixed state of the highlighted source is displayed on a second line of the viewer 240.

Thereafter, the user presses in step 415, the left and right direction arrows 510,151 (Fig. 8) to move the cursor to the left or right and thus highlight the desired source. In response to receiving signals from the left and right arrow keys 510 and 515, the CPU 220 provides, in step 420, (Fig. 7) a screen 240 with the fixed state of the source highlighted. After highlighting the desired source, the user can press in step 425, the downward direction key 520 (Fig. 8) to move the cursor to the second line of the display 240. The key 505 can then be pressed in step 430, to change the status of "fixed" or "non-fixed" and vice versa with each operation of the key 505. As the CPU 220 receives signals indicating each action of the key 505, it provides the choice of state in step 435 to the viewer 240 for presentation. When the desired fixed state for the source is shown on the screen in step 440, the user can press the up arrow key 525 to return to the first line of the viewer 240, then press the arrow keys to the left and right 510, 515 to move the cursor to the next desired source. The fixed state of the next highlighted source can be changed in a manner similar to that described above with reference to step 415 through step 435. To exit the status screen, the user can in step 445, press the 505 key when the cursor is located on the first line of the viewer 240. For those of ordinary skill, it is preferable that the aforementioned keystroke is only for illustrative purposes and that any combination of keys or any method of programming could be used instead.

The programming by the user of the fixed state of each source allows the user to vary at their convenience the sources that are fixed as the information provided by each source becomes more or less important. After selling a particular stock, for example, the last price for that stock may not be more important to the user, and it may not matter in which order the last price of the merchandise is deleted. In that case, the stock service source may be non-fixed for the user to ensure that the message database 252 has a lot of free space to store the messages recently received from "other fixed sources.

In another composition of the present invention, only fixed messages from a fixed source can be displayed in the viewer by the user. This is illustrated in the flow diagram of Fig. 9. When in step 600 of the CPU 220 it receives a "read" signal from the controls 235, which indicates that the user wants to read the stored messages, the CPU 220 recovers, in step 605, the last message received, the time of reception of the message, and the source associated with the message of the message database 252. This "read" signal may for example originate by pressing the control key 530 (FIG. 8). The recovered information is then presented in step 610 (Fig. 9) in the viewer 240 for presentation. When in step 615 subsequent "read" signals are received, the CPU 220 in step 62o, searches for the next message and determines in step 625, whether the next message comes from a fixed source. When the next message is not from a fixed source, the next message, the reception time and the address in step 630 is retrieved and presented in step 610 in viewer 240.

When the source of the next message is fixed, the CPU 220 determines in step 635, whether the message itself is fixed. When this occurs, the message, time and source are retrieved and displayed on the screen in steps 630 and 610. When the message is not fixed, the CPU 220 preferably goes to the next message in step 620 without presenting the message. non-fixed message from a fixed source. Therefore, the user does not confuse outdated information from fixed sources.

Taking into account the previous example, the user who expects a specific quote before selling is usually interested only in the last price and it would be neither useful nor interesting to present outdated quotations. The presentation in the viewfinder ends when the user chooses to exit the "read" mode operation in step 640, perhaps by pressing the control key 505 (Fig 8) during the presentation of the message.

The presentation of the messages can be better understood if it refers to Fig. 10 which is a table illustrating the order of the presentation of messages for the example messages of Fig. 5. As can be seen, it is presented to the messages preferably In order of reception, for example, the ones that were received first are shown first. However, since the stock service source is fixed, the last message from the stock service is the only message from the stock service that is displayed. Messages from other non-fixed sources are all presented in the viewer, as we have already seen.

Although, in the aforementioned composition, the fixed sources are described as if each had a single fixed message, for example, the last message received for each fixed source, it will be appreciated that a number of messages provided by each source could be established in a number greater than 1 (one) or may be reprogrammable. The radio receiver 110 could, for example, be pre-programmed in such a way that the user could manipulate the controls 235 (Fig. 2) to adjust not only the fixed state of each source, but the number of fixed messages from each source fixed too.

According to an alternative composition of the present invention, the order of deletion of the stored messages can be defined later by a "persistence" level of each source. Sources can be programmed to be of low persistence, for example, low priority, high persistence sources, for example, high priority sources. The level of persistence of each source, either low or high, could be programmed by the technical service or ', in a manner similar to that described above, by the user of the radio communication device. The order of deletion of messages according to the alternative composition of the present invention, is detailed below, locating the messages that are deleted first at the beginning of the list and the messages that are deleted last, at the end of the list: Low persistence messages, read, not fixed High persistence messages, read, not fixed Low persistence messages, unread, not fixed High persistence messages, unread, not fixed Low persistence messages, read, fixed High persistence messages , read, fixed Messages of low persistence, unread, fixed. High persistence, unread, fixed messages When the available space in the memory is low, the radio processing unit preferably first deletes the oldest message from each of the eight categories. In other words, the deletion order is further affected by the time of receipt of each message within the eight categories according to the alternative composition. According to this alternative composition of the present invention, the user can prioritize messages received according to the source. This can be very useful in situations where the messages received from some sources are more important than others. For example, when information services messages are less important than personal messages, the user can designate that the sources of information services are sources of low persistence and that personal sources are sources of high persistence. Therefore, in general, information service messages will be deleted before personal messages are deleted. When the source of information services is a fixed source, the information services message received last will be determined as fixed and deleted after the personal non-fixed messages.

In summary, the radio receiver described above receives messages from a number of sources, each of which can be fixed. When a source is fixed, the last message received from the fixed source shows a flag in memory and is located at the end of the list of deleted messages stored. Therefore, the user can conveniently program a desired source so that it becomes fixed, and then make sure that minor messages "will always be erased before the fixed messages of that source.

Moreover, in a composition of the radio receiver, while messages from non-fixed sources are conventionally processed and displayed in the viewer, only fixed messages from fixed sources can be displayed in the viewer. As a result, in the fixed sources, the user sees only the last received message, and the messages received from that source are not shown. This prevents the user from being confused, with the presentation of older information that has been replaced by other updated information.

Up to now, it will have been appreciated that a method and apparatus has been offered to better prioritize the order of erasure of received messages in a radio communication device.

Claims (10)

1. A radio receiver 110 for receiving messages from a number of sources; the radio receiver (110) comprises: a message database (252) for storing messages and sources from which the messages originate; a processing unit ('22) to determine whether each source has fixed or non-fixed status and to highlight with a flag the last message received from fixed sources to indicate that the messages ultimately received are fixed messages that must be deleted only after deleting non-fixed messages that are not highlighted as fixed messages.

2. The radio receiver (110) according to Claim 1, further formed by: A viewer (24) for displaying non-fixed messages received from non-fixed sources and for presenting fixed messages received from fixed sources.

3. The radio receiver (11) according to Claim 1 further comprises: a receiver (210) for receiving and demodulating a radio signal to generate data thereon; and a decoder (215) connected to a receiver (210) for decoding the data to retrieve the messages and addresses associated with the messages, where each different address is associated with one of the different sources.

4. The radio receiver (110) according to Claim 3, further comprising a memory (250) connected to the processing unit (220) for storing a list of the different sources and an address associated with one of the different sources; and a database (255) connected to a processing unit (22) for storing a number of sources and the state associated with each of the different sources, where the state is set as fixed or non-fixed.

5. The radio receiver (110) according to claim 4 further comprising controls (235) connected to the processing unit (220) to receive user inputs to program the status of each of the different sources in the base of status data (255).

6. A radio receiver (110) for receiving messages from a number of sources, the radio receiver (110) is formed by: a means designating in the first instance (255), to designate each of the different sources as fixed sources or not fixed; and a means signaling with a flag (220) connected with the means designating in the first instance (255) to signal at least the messages received last from the fixed sources as fixed messages, where the fixed messages are erased only afterwards that stored messages that are not marked as fixed messages are deleted.

7. The radio receiver (110) according to claim 6, further comprising: a memory (252) connected to the means designating in the first instance (255) and the means which signals with a flag (220) for storing messages

8. A radio receiver (110) according to Claim 6, further comprising: a programmer means (235) connected to the first designation means (255) for programming each of the different sources as fixed or non-fixed.

9. A radio receiver (110) according to Claim 6, further comprising: a programmer means (235) connected to the signaling means with a flag (220) for programming a number of messages for each 'fixed source which is indicator of a fixed number of messages from each fixed source.

10. A radio receiver (110) according to Claim 7, further comprising: a means designating in second instance (220) connected to the memory (252) to designate stored messages, including fixed messages, as read or unread, where the messages read have been presented to the user and those not read have not been presented to the user; and a priority means (220) connected to the memory (252) to prioritize the order of deletion of the stored messages depending on whether each message is fixed and whether each message is read or not read. In testimony of which I sign the present in this City of Mexico, Federal District, on the thirtieth day of the month of August of one thousand nine hundred and ninety four By MOTOROLA, INC.