KR20010023702A - Insert/delete modification of information service message - Google Patents

Abstract

An optional calling device for receiving a signal having an address part and a message part including a message part includes a receiver, a message memory for storing a submessage, whether the signal is directed to the selective calling device, and the signal And a decoder for determining whether to include a delete command having a parameter identifying a part of the message or an insert command having an additional part and a parameter identifying a specific position of the submessage. In response to the delete command, deleting the identification portion of the submessage 802 reduces the size of the submessage 801 stored in the message memory. In response to the insert command, the selective calling apparatus increases the size of the submessage 801 stored in the message memory by adding an additional portion to the submessage 802 at the identification position.

Description

Insertion / deletion variant of information service messages {INSERT / DELETE MODIFICATION OF INFORMATION SERVICE MESSAGE}

Conventional selective calling devices, such as selective call receivers or transmitters and selective call receivers may receive messages from one or more sources. The sources can usually be distinguished from each other by the address associated with each message. When the address correlates with or matches a predetermined address in the selective calling device, the selective calling device receives the message from a particular source, such as an information service provider, and stores it.

The selective calling service system may periodically send a plurality of types of messages to subscribed selective calling devices including information service messages such as news, stock market data, weather forecasts, sports scores, and flight information. Selective calling systems are known that wirelessly transmit information service messages, such as submessages or topics, embedded within conventional transport protocols. However, it is usually necessary to modify the information service message previously transmitted. In general, only a portion of the already transmitted information service message stored in the optional calling device needs to be updated as a result of the modification. For example, the information service may be flight information listing current arrivals and departures at a particular airport. If a flight's arrival time is modified, only the arrival time for that plane needs to be updated. It is known to change the information service message by sending only a portion of the changed information service message, such as the new arrival time of the plane within the embedded protocol update command. It is also known that in response to such an update command, the selective calling device replaces a portion of an existing information service message with a new one substantially on a one-to-one basis.

The information service message may include several lines of display information. In some cases, a portion of an information service message needs to be radically modified, such as by reducing the number of lines containing the message. For example, if a user of a selective calling device subscribes to a list of current arrivals and departures at a particular aerodrome, each line shown on the display of this device is for one plane. Each line may include airline name, aircraft number, gate number, departure or arrival time, and other information. However, when an entire line, i.e. all data relating to a particular flight, needs to be removed, a known update command may be used to convey a carriage return, a space character, or an entire line in order to maintain the format or template of an information service message. It needs to be replaced with other characters such as non-displayable characters. However, the memory of the selective calling device is wasted and airtime is wasted because conventionally it is necessary to send useless characters to maintain the template.

The present invention relates generally to wireless communication systems, and more particularly to a method of modifying an information service message previously received by a selective calling device.

1 is an electrical block diagram of a selective calling system for providing information service messages in accordance with a preferred embodiment of the present invention.

2 to 5 are timing diagrams illustrating a transmission format of a signaling protocol used by the selective calling system of FIG. 1 according to a preferred embodiment of the present invention, and FIGS. 2 to 4 are shown in one diagram in terms of configuration. 2 corresponds to the upper part of the drawing, FIG. 3 corresponds to the middle part of the drawing, and FIG. 4 corresponds to the lower part of the drawing.

6 is an electrical block diagram of a selective calling apparatus according to a preferred embodiment of the present invention.

7 is a flow diagram illustrating steps executed by an optional calling apparatus associated with a delete command and an insert command in accordance with a preferred embodiment of the present invention.

Fig. 8 is an illustration of an information service message shown on the display of the selective calling apparatus after sending the original message command, after sending the delete command and after sending the insert command.

9 is a flow diagram illustrating generation of a delete command used to modify the information service message shown in FIG.

10 is a flow diagram illustrating generation of an insert command used to transform the information service message shown in FIG.

Fig. 11 is an illustration of another information service message shown on the display of the selective calling apparatus after sending the original message command, after sending the delete command and after sending the insert command.

12 is a flow diagram illustrating generation of a delete command used to modify the information service message shown in FIG.

FIG. 13 is a flow diagram illustrating generation of an insert command used to transform the information service message shown in FIG.

Fig. 14 is an exemplary diagram of a graphical information service message shown on the display of an optional calling device after sending an original message command, after sending a delete command and after sending an insert command.

FIG. 15 is a flow diagram illustrating generation of a delete command used to modify the graphical information service message shown in FIG.

FIG. 16 is a flow diagram illustrating generation of an insert command used to transform the graphical information service message shown in FIG.

FIG. 17 is a view for explaining association between a delete command of FIG. 15 and an insert command of FIG. 16;

Thus, there is a need for a method of removing a portion of an information service message without replacing it with updated data.

Many information service messages are displayed on several lines of the display of the optional calling device so that each line is presorted into a meaningful sequence according to one of the words or numbers for each line. For example, if the user of the selective calling device subscribes to a list of current arrivals and departures at a particular aerodrome, each line of the information service message will typically display the arrival or departure time in chronological order. Thus, when the flight arrival time changes, only the arrival time change appears in the list, so it is no longer listed in chronological order. To maintain the desired chronological order, new data of the entire line with the airline name, aircraft number, gate number, new arrival time, and all other relevant information must be inserted into the message at the appropriate location. You must insert a whole new line into a position in the message where a line did not already exist. However, the known update command of the embedded protocol does not replace the existing data with update data of comparable size, but has the ability to insert update data into the message.

Therefore, there is a need for a method of inserting update data into the location of an information service message while retaining all parts of an existing message.

1 is an electrical block diagram of a paging system or selective calling system 100 for generating and transmitting (or propagating) a signal, preferably an optional calling signal, comprising a plurality of information services in accordance with a preferred embodiment of the present invention. Indicates. The functionality of this selective calling system 100 is preferably implemented in software in, for example, a CNET ^™ selective calling terminal manufactured by Motorola, Shrimberg, Illinois. Typically, a subscriber can send a message using telephone 102 to initiate the transmission of an optional paging message. Telephone 102 is connected to selective calling system 100 via telephone network 104, the operation of which is well known to those skilled in the art. Similarly, computer / modem 106 is also coupled to telephone network 104 to input information, for example alphanumeric or numeric messages. The telephone network 104 is typically coupled to a message receiver 108 that receives a message sent from at least one of the plurality of selective calling devices from a public switched telephone network.

According to a preferred embodiment, the plurality of information services 140-146 are coupled to the telephone network 104 coupled to the processor 109 via the message receiver 108. Alternatively, the plurality of information services 140-146 may be received via a radio frequency signal. The provider of the information service sends a variation of the previously sent information service message to the selective calling system 100 at frequent intervals when there is a need to update the information contained in the previously sent information service message.

When the processor 109 receives the variant, it encodes the variant as a message in the form of an optional call signal. In particular, the processor 109 coupled to the message receiver 108 encodes the information service by determining the appropriate protocol, preferably the FLEX ^™ protocol and address. When the processor 109 determines that the message is sent via a different signal format, it is sent to one of the other protocol generators 116. When the processor determines that an information service message is sent on the FLEX protocol, the message is encoded and stored in frame queue buffer 110 having a queue (frame 0-N queue) for the corresponding frame of the signal. Preferably, the number N of frames is 128. The predetermined frame identification D of the selective calling device 130 corresponding to the message is input and the message is stored in the corresponding frame queue. The capacity analyzer and frame ID / cycle generator 112 analyzes the capacity of each frame to determine the sequence of frame IDs to be transmitted and to determine the cycle value used. The capacity analyzer and frame ID / cycle generator 112 also respond to other protocols being transmitted. For example, if the occurrence of a predicted frame is to be replaced by transmission of one of the other protocols (thus reducing the capacity of the frame), the capacity analyzer and frame ID / cycle generator 112 may account for this with the determined cycle value. Can be. The bit and frame sync generator 118 synchronously generates the bit and frame synchronization signals. The message formatter 114 determines the frame in which the message is included in response to the address and frame queue of the selective calling device 130. The message is then formatted for transmission. Transmitter 120 receives signals from message formatter 114, other protocol generators 116, and bit and frame sink generators 118, and transmits radio frequency selective call signals in a manner well known to those skilled in the art. Send to the selective calling device via.

2 shows a standard protocol format, ie, the FLEX protocol, encoded in 128 message packets or frames 200. Each frame 200 preferably has a duration of 1.875 seconds and has a base data rate of 6400 bits per second.

Referring to Fig. 3, each frame is a frame having a bit sync 302 signal, preferably 32 bits with alternating 1 and 0 patterns, followed by 32 predetermined bit words and an inverse of the 32 bits. It consists of one 32-bit word with 21 variable information bits including information such as a sink # 1 304 signal and a Frame Info 306 signal, preferably a cycle number and a frame number. The bit sink 302 signal provides bit synchronization to the selective calling device 130 while the frame sink # 1 304 signal provides frame synchronization and includes a signal representing the data rate of the message information. The frame info 306 signal is followed by the frame sync # 2 308 signal. The word following the frame sync # 2 308 signal is a block info 310 signal that first contains information such as the number of addresses, the end of the block information field and the vector start field. The words in each frame 200 are preferably encoded as 31, 21 Bose-Chaudhuri-Hocquenghem (BCH) code words with 21 information bits and 10 parity bits generated according to known BCH algorithms. Additional even parity bits extend this word as 32, 21 code words. The address is located in field 312, the vector pointing to the message is located in field 314, and the message is located in the remaining fields, such as field 316. In general, all address signals within a frame are located in the first portion or address portion of the frame, such as in field 312, and all message signals are located in the subsequent portion or message portion of the frame, such as field 316. Those skilled in the art will appreciate how to place an address in the first portion of one of the frames 200 and a message in the second portion. Fields 310, 312, 314 and 316 are shown in the vertical direction to indicate that these words are interleaved so that there is no burst error in transmission. All binary and selected alphanumeric outbound messages in the one-way selective calling system, and all binary and selected alphanumeric transport channel messages in the two-way selective calling system, include a data field, followed by a protocol definition header or a Status Information Field. . The FLEX protocol is described in more detail in US Pat. No. 5,555,183 entitled "Methods and Devices for Synchronizing to Synchronous Selective Call Signals," effective September 10, 1996 to Willard et al., Which is assigned to the assignor of the present invention. It is referred to here.

As is known, the optional calling device is preprogrammed with one or more transport level communication protocol addresses to receive the message. For example, the selective calling device 130 may advance in advance to a plurality of additional unique FLEX addresses to receive one FLEX address and each of the plurality of information services 140-146 to which the selective calling device subscribes to receive a private message. It is programmed. It is also known that each information service message received by the FLEX address corresponding to the aerodrome information 140 of any one information service, for example a plurality of information services 140-146, is similarly formatted. After receiving the original message, the subscriber to one of the information services 140-146 receives the update message of the original message. Typically, since only a relatively small portion of the information in each original message is time varying, only a relatively small portion needs to be modified. For example, a person who subscribes to the aerodrome information 140 typically pre-specifies the aerodrome to which the airline wants to receive flight information, or otherwise automatically receives information about a major aerodrome within the service area to which the user travels. Each aerodrome associated with the aerodrome information 140 is pre-assigned a sub-address or topic number for the arrival flight information and several other topic numbers for the arrival flight information. The subaddress or topic number is separate from the FLEX address. Typically, the subaddress associated with each aerodrome appears on several lines of the display, each line containing several types of information in separate fields, such as airline name, aircraft number, gate number, arrival and / or departure time, and other information. It is included. By replacing the old arrival time with the new arrival time using one of the conventional update commands, such as the Sequential Topic Range Update Command or the Itemized Topic List Update Command. A part of the flight information submessage, such as the arrival time, can be updated. These update orders have been assigned to the assignee of the present invention and are incorporated herein by U.S. Application No. 08 / entitled "Execute Update of Multiple Information Service Topics Using a Single Order", filed June 5, 1997 by Nelm et al. 870,048 is described in more detail. While modification of an existing submessage using a conventional command is valid in some cases, modification of an existing submessage using a delete command according to the present invention can be shortened by removing or deleting a portion of the existing submessage. When it is even more valid. Moreover, modification of existing submessages by use of the insert command according to the present invention is more effective than conventional commands when existing service messages are expanded by adding new parts. Other information service messages such as sports scores and weather with multiple FLEX addresses are modified in a similar manner. In general, there is a single FLEX address for each group of topic numbers that share a similarly formatted submessage.

Referring to Figure 4, one of the messages, message 316, is described in more detail in accordance with a preferred embodiment of the present invention. Information content from information services 140-146 is encoded in one of the messages, such as message 316, for transmission to selective calling device 130. There are several communication methods and communication levels delivered from the selective calling system 100 to the selective calling device 130, and protocols embedded in any application layer for encoding the information content included in such delivery are provided by the information service 140-. 146) a process for identifying whether it is used by The status information field 402 indicates that an embedded protocol message 401, preferably a FLEXsuite embedded protocol message, is being sent, as opposed to a regular optional paging message. The term "embedded protocol" means an application layer communication protocol carried by a transport layer communication protocol. FLEXsuite includes several embedded protocols that are used by an optional calling system 100 that uses the FLEX protocol to convey applications, computer programs, and data used in such applications. When the transport channel limits capacity, it is desirable to use a radio frequency embedding protocol, such as one of the FLEXsuite protocols, rather than one of the conventional wireless protocols. The status information field 402 defines which of the several possible ways of conveying information from the selective calling system 100 to the selective calling device. The status information field is defined in the FLEXsuite embedded protocol message 401 as the first 8 bits of application layer information. Message 316 includes one or more FLEXsuite embedded protocol messages 401 or submessages, in which case each of the one or more embedded protocol messages has a separate status information field 402. Message 316 may also include one or more FLEXsuite embedded protocol messages 401 and one or more regular optional paging messages. The purpose of the status information field 402 is to provide the controller 210 with the information needed by the software of the optional calling device 130 in order to correctly process the information content of the associated message field immediately following the status information field.

The status information field 402 includes an application layer protocol identifier, preferably indicated by two hexadecimal digits. Preferably, the application layer protocol is FLEXinfo ^™ and the application layer protocol identifier for FLEXinfo is preferably hexadecimal “80”. The absence of an application identifier indicates that the message is a regular selective paging message. Alternatively, several application identifiers indicate that the message is a canonical selective invocation message. As can be appreciated from FIG. 4, the status information field is the first portion of message 316.

Alternatively, a Global Status Information Field (not shown, but very similar to the Status Information field 402) may be in front of the Status Information field 402. The global state information field includes a byte indicating the size of a global payload and a byte forming a global identifier. Examples of global state information fields include compression and scrambling, or encryption. The global identifier is preferably two hexadecimal digits. The global identifier for encryption is preferably "F0". Encryption in FLEXsuite has been assigned to the assignee of the present invention, using the technique disclosed in US Pat. No. 5,283,832, entitled "Paging Message Encryption," entered into February 1, 1994 to Lockhart Junior et al., Which is hereby incorporated by reference. It is preferable to carry out. Multiple global protocols may be involved in signal transmission by sending consecutive global status information fields. The global status information field contains an indicator of the size or length of the FLEXsuite message in the FLEXsuite payload (in bytes). An indicator of the message size causes multiple FLEXsuite messages to be sent within a single FLEX message, such as message 316. In the example shown in FIG. 4, the FLEXsuite message size includes only one FLEXsuite message, in this example, a byte in fields 403-409 representing the FLEXinfo command.

The selective calling device 130 preferably receives the original information service message in a conventional manner, using a FLEXinfo original message command (not shown). The information service provider computer 101, located at each provider of information services 140-146, is programmed to compose the original message using original message instructions and modified messages, such as insert and delete instructions. Although FIG. 1 shows a single information service provider computer 101 for seven information services 140-146, there is a separate information service computer for each information service. All original message commands are sent in a single major version number. The information service provider computer 101 sets the value of the major version number. The actual value of the major version number is arbitrary, but for easier understanding, it is assumed that the first original message number has a major version number zero. For subsequent several original message commands addressed to a particular selective calling device 130, the information service provider computer 101 increments the major version number by one. The original message command preferably does not include a minor version number; The absence of a minor version number is to be interpreted by the information service provider computer 101 and optional calling device 130 as each topic contained in the original message instruction has an associated minor version number 0. The use of major and minor version numbers has been assigned to the assignee of the present invention, US Patent Application No. 08, entitled "Update of Information Services Message," filed June 30, 1997 by Kemp, et al. It is described in more detail in / 886,102.

Formatting of information service messages is further detailed in US Patent Application No. 08 / 807,933, entitled "Selective Call Message Formatting," filed February 28, 1997, by Nelm et al., Assigned to the assignee of the present invention and referenced herein. Is explained. Battery savings by the optional calling device 130 subscribing to the information service and a description of the related FLEXinfo command, filed February 26, 1997, by Nelm et al., Assigned to the assignee of the present invention and referenced herein, US Patent Application No. 08 / 806,972, entitled "Selective Calling Device and Method for Battery Saving in Information Services".

4, following the FLEXsuite status information field 402, each FLEXinfo command, such as the delete command 400, is a unique command identifier, preferably command number 403. The command number 403 is preferably an unsigned integer that can be expanded. The instruction content length 404 specifies the size of the delete instruction, i.e., the number of bytes from the fields 405 through 409. The next field of the delete command 400 is the data conversion identifier 405. The data conversion identifier is preferably 4 bits long. The data conversion identifier 405 identifies which of several data conversion algorithms, such as ASCII or Numeric, is used to encode the relevant data erased by the delete command 400. The next field is the major version number 406 having the size or length of one nibble. The method according to the present invention uses the major version number of the delete command 400 in the same way that the major version number is used for a conventional update command. The controller 210 of the selective calling device 130 obtains the submessage address from the topic number 407. For example, if the topic number is 98, the hexadecimal value "62" will appear in the field for topic number 407. Each topic has a unique integer associated with it. When the optional calling device 130 does not include the topic subaddress of the subscribed information service topic subaddress, the selective calling device can skip to the next command (if any other command) or immediately shut down, i.e. save battery. Can be a condition. A single FLEX address is generally preselected for each group of topic numbers (subaddresses) sharing similarly formatted submessages. The delete command 400 is part of the embedded protocol or application layer protocol transmitted by the optional calling system 100 in the message portion, such as field 316 of FIG. 3 of the standard transport layer communication protocol format. The next field in the delete command 400 is data offset 408. The data offset field contains the same number of bytes from the beginning of the submessage to the beginning of the deleted part. The next field in the delete command is the delete length 409. The deletion length 409 includes the same number as the number of bytes in the portion to be deleted. Together, data offset 408 and delete length 409 form a parameter that describes part of the information service message.

Hereinafter, another FLEXinfo command following the FLEXsuite status information field 502 will be described with reference to FIG. 5. According to the invention, the insert command 500 (fields 503-510) is a unique command identifier, preferably command number 503. The command number 503 is preferably an unsigned integer that can be expanded. The command content length 504 specifies the size of the insert command. The value of the instruction content length is the number of bytes in the fields 505-510. The next field in the insert command 500 is the data conversion identifier 505. The data conversion identifier is preferably 4 bits long. The data conversion identifier 505 identifies which of several data conversion algorithms, such as ASCII or pneumatics, is used to encode the relevant data added to the pre-existing submessage by the delete command 500. ASCII is used unless the data is all numeric-in this case standard or economic figures-or data is not graphic-in this case a graphics algorithm is used-when sending an insert command 500 to the optional calling device 130. Is a preferred data conversion algorithm. The insert instruction 500 uses any of the popular 4-bit numbers, 7- and 8-bit alphanumeric and 8-bit hexadecimal formats that produce the tightest packed data. By using the data conversion identifier 505, the selective calling device 130 may convert the message into a format in which the message is stored in a memory element, such as the message memory 226. The next field is a major version number 506 with the size or length of one nibble. The method according to the invention uses the major version number of the insert command 500 in the same way that the major version number is used for a conventional update command. Topic number 507 is a field containing the topic number for the submessage into which additional data is to be inserted. The data offset 508 field contains the same number as the number of characters from the number portion of the submessage to the position in the submessage into which the data is inserted. The data length 509 field includes the same number as the number of characters in the inserted portion. The Data To Insert (510) field contains data that is inserted into the submessage by the insert command 500 after being packed according to the data conversion identifier 505.

6 shows an electrical block diagram of a selective calling apparatus 130 according to a preferred embodiment of the present invention. Selective calling device 130 is powered by battery 234 and operates to receive and transmit radio frequency signals via antenna 202. Receiver 204 is coupled to antenna 202 to receive a radio frequency signal. Demodulator 206 is coupled to receiver 204 to retrieve the information signal present in the radio frequency signal using conventional techniques. The information signal recovered from the demodulator 206 is coupled to a controller 210 which decodes the recovered information in a manner well known to those skilled in the art. In a preferred embodiment, the controller 210 includes a microcomputer, such as a model MC68HC11PH8 microprocessor manufactured by Motorola, and includes a signal processor that executes the functionality of a decoder typically executed in hardware or software. The signal processor includes an address correlator 214 and a decoder 212 using methods and techniques known to those skilled in the art. The address correlator 214 checks this recovered information signal from the output of the demodulator 206 for address information and correlates the retrieved address with one of a plurality of predetermined addresses stored in the nonvolatile memory 220. After the address correlator 214 determines that the received signal is directed to the selective calling device 130, for example, by correlating the address of the received signal to one of the addresses previously assigned to the nonvolatile memory 220. Decoder 212 decodes the signal against the application layer protocol identifier to determine if the message contains a submessage. The absence of the application layer protocol identifier in the status information fields 402 and 502 (FIGS. 4 and 5) indicates that the message being decoded is a regular optional paging message. Conversely, if an application layer protocol identifier (such as FLEXsuite) is present and correlated with an information service application (FLEXinfo), then the message being decoded is an information service message. The transport level communication protocol for the information service is stored in the nonvolatile memory 220, while the application layer protocol identification, i.e., the command number 403 and topic number (or subaddress), is stored in the memory 222. desirable.

When the user of the optional calling device 130 subscribes to at least one information service, the memory 222 is programmed with the address and associated topic number (or subaddress) of each information service. Each information service has a unique address and a plurality of unique topic numbers, which allows the selective calling device 130 to determine when the subscribed information services 140-146 are present at a particular transmission. The topic number may be a short form of information service address, but it is preferred that it is entirely different from the information address while being able to identify the presence of an information service topic within a particular transmission.

The status information is stored in the memory 222 and identifies the information service that the selective calling device 130 is programmed to receive. Decoder 212, following decoding of the presence of the application layer protocol identifier in status information field 402, for example, decodes command number 403 indicating that insert command 500 has been received.

After receiving, decoding and storing the selected information service in the message memory 226, the selective calling device 130 typically presents at least some of the messages stored to the user by the display 228, for example a liquid crystal display. Additionally, a warning is issued to the user via output indicator 232 along with the reception, decoding and storage of the information. The support circuit 224 preferably includes conventional signal multiplexing integrated circuits, voltage regulators and control mechanisms, current regulators and control mechanisms, audio power amplifier circuits, control interface circuits, and display lighting circuits. These elements are configured to provide support to the functionality of the optional calling device 130 as requested by the user.

Additionally, the controller 210 determines whether to save power when detecting an address from the state information enabled or disabled in the memory 222. That is, when the received and retrieved address is correlated with a predetermined address in the nonvolatile memory 220, the controller 210 checks state information corresponding to the correlated predetermined address information to determine whether the address is enabled. Decide If the controller 210 determines that the correlated predetermined address is not enabled, the decoder 212 is not executed. Input controller 230 is coupled to memory 222 and user interface 216 to receive user input, including but not limited to programming, data manipulation, and command transmission to selective calling device 130. The optional calling device includes a transmitter 208 to respond to the information service submessage.

In addition to battery savings when the transport layer communication protocol address of the information service does not match the address of the selective calling device 130, the selective calling device 130 may have the information service message subscribed to it by the selective calling device 130. You can save battery when you decide not to include a specific topic. In this way, the information service can be identified by the topic number (sub-address) and information service address sent in the information service message to determine when the selective calling device 130 includes the topic (sub-message) to which the transmission is subscribed. To be. Because there are a large number of information service topics available, battery life is depleted when an optional calling device is needed to retrieve all transmissions for the subscribed information service 140-146. Thus, by checking the information service address and topic number, the selective calling device can initiate battery saving.

7 shows the steps executed by the selective calling apparatus associated with the delete command 400 and the insert command 500 according to a preferred embodiment of the present invention. In step 701, the selective calling device 130 receives a modify command, such as a delete command 400 or an insert command 500. The selective calling apparatus then decodes the topic numbers 407 and 507. When the topic calling address is not included between any topic subaddresses of the information service to which the selective calling device 130 is subscribed, the selective calling device skips to the next command, step 706. The selective calling apparatus then decodes the major version numbers 406 and 506. In step 703, the controller compares the major version number with the current major version number stored in the message memory 226. If the major version number 406, 506 is equal to the current major version number, the selective calling apparatus decodes the remainder of the modify instruction in step 704; Otherwise, the selective calling apparatus rejects the update data at step 706. In step 704, data is deleted from or inserted into the information service message, depending on whether the command is received as well. If the deletion is from some point other than at the end of the message, the software stored in non-volatile memory 220 causes the controller 210 to modify the message in message memory 226 so that the message can appear on display 228. Will move the rest. In step 705, the major version numbers 406 and 506 of the submessage are changed, preferably incremented, more preferably incremented by one. Further, in step 705, the minor version number of the submessage is changed, preferably reset to zero.

8 shows that a sub-message appears on the display of the selective calling device 130 after transmission of the original message command, after transmission of the delete command 400, and after transmission of the insert command 500. Indications 801, 802, and 803 are chronological indications on the display of the same selective calling device 130 indicating the current arrival at a particular airport, similar to what is normally displayed on a cathode ray tube monitor at an airport. Indication 801 is the first or oldest display, typically generated by the original message command sent as a sub-message embedded in a conventional message, otherwise the indication 801 is by one of the conventional update commands or by an insert command. It is from an information service message that has been updated more than once by the 500 or the delete command 400. Alternatively, the information service message shown in the indication 801 is sent to the selective calling device 130 as a conventional message, rather than as a buried submessage. Indications 801, 802, and 803 represent 11 lines, each line representing 25 alphanumeric characters. It should be noted that the information service provider computer 101 has the earliest arrival time at the top so as to pre-sort the information shown in the display 801 according to the time. It is arbitrary that the information service message shown in the indication 801 includes eleven lines. It can be appreciated that the information service message shown in the indication 801 and other information service messages shown here may include a reasonable number of lines compatible with the available message memory 226 of the optional calling device 130. For simplicity of explanation, assume that display 228 of selective calling device 130 may represent eleven lines. The display of the optional calling device can show all lines of the information service message without scrolling only if the display is large enough; Otherwise, fewer lines will appear at any time. However, the size of the display 228 is not critical to the present invention. Of primary importance in understanding the present invention is the submessage stored in the message memory 226. The delete command 400 and the insert command 500 modify the submessage stored in the message memory, including the size of the submessage. Modifications to the submessages stored in the message memory 226 are made possible so that the size of the display 228 is large enough to represent the entire information service message originally sent and is visible through the display 228 after deletion and insertion. The advantage can be obtained.

Following the information service message that generated the indication 801 received by the optional calling device, the information service provider computer 101 has three upper heads belonging to the aircraft "ABC 131", "NOP 79", and "ABC 253". A delete command 904 (FIG. 9) is deleted that deletes the line from an existing information service message (indication 801) because these aircraft landed long ago and information about these aircraft is invalid. With reference to FIG. 9, the steps following the step in which the information service provider computer 101 constructs or generates the delete instruction 904 are described in a flowchart 900. In step 901, the topic number "77" of a particular submessage is set. This topic number value is arbitrary and distinguishes the current aircraft arrivals on a particular aerodrome from the current arrivals on the same aircraft and departures from other aircraft. Also sufficient parameters are set to identify the portion of the message that is deleted in step 901. In this example, the deleted part is "ABC 131 G1 11:45 AM Landed NOP79 A5 11:51 AM Landed ABC 253 G3 11:59 AM Landed". The deleted part has 75 characters. In this example, the first character of the portion to be deleted is 25 characters from the beginning of the existing message. In step 902, the value hexadecimal "28" is used as the instruction number 403; This is an arbitrary value used to distinguish the delete command from other embedded protocol commands. The hexadecimal value "19" is used for data offset 408. The hexadecimal value "4B" is used for the erase length 409. In step 902, data conversion identifier 405 is set to " 2 ", indicating that the portion to be deleted is alphanumeric. The current major version number 406 is set to " 1 " which matches the major version number of the stored message, from which part of the data is deleted. After the selective calling device 130 receives and decodes the delete command 400, the software stored in the nonvolatile memory 220 of the selective calling device causes the controller 210 to make a major stored in the memory 222 of the selective calling device. Care must be taken to increment the value of version number 406. Preferably, major version number 406 is incremented to the value "2". After the values of all of the commands in the other fields have been determined at step 902, the command content length 404 is determined at step 903. In this example, the instruction is 4 bytes after the instruction content length field; Thus, the value of the command content length 404 is "04" and the complete delete command 904 is "28042177194B". Adding the FLEXsuite status information field 402 of hexadecimal "80" to the beginning of the delete command 904 causes the message "8028042177194B" to be recognized as a FLEXinfo message as opposed to the conventional message. The method according to the invention allows this single delete command 904 to be communicated to the selective calling system 100 for wireless transmission to the selective calling device 130 as a submessage embedded in a FLEXsuite message. Indication 802 represents an information service message after acted upon by delete command 904.

Hereinafter, with reference to FIG. 10, the steps after the configuration or generation step of the insertion command by the information service provider computer 101 will be described in the flowchart 1000. Following the transmission of the original information service message, the information service provider computer 101 receives data from one of the information supply units 103 for the aircrafts "XYZ 941", "XYZ 875" and "NOP 83", As a result, the information service provider computer 101 has entered the following alphanumeric data into a specific location of the current information service message (indication 802): "XYZ 941 D1 12:49 PM OnTime XYZ 875 D4 12:53 PM OnTime NOP 83 A2 12 Generate insertion command 1005 to cause " 57PM OnTime " to be inserted. In step 1001 three fields are defined. Insert command 1005 has hexadecimal “77” as topic number 507. Data offset 508 has a value of 200 because the first character of the portion to be inserted is two hundred characters from the beginning of the message. In this example, the data length is 75 because there are 75 characters in the part to be inserted. In step 1002, an instruction is constructed by the information service provider computer 101. The instruction number 503 is arbitrary, but preferably hexadecimal "29" for all insertion instructions. The command content length 504 can be determined only after the data to be inserted is packed at step 1003. The data conversion identifier 505 is "2" indicating that the part to be inserted is alphanumeric. The major version number 506 is "2", which indicates that the information service message was previously modified by another command, such as the delete command 400 or one of the conventional commands. Topic number 507 is hexadecyl "77", which corresponds to arrival at a particular aerodrome. The 200-byte data offset 508 is converted to hexadecimal "C8", which in turn is converted to the extensible integer "8148". The data length 509 of 75 characters is converted to hexadecimal "4B". The data to insert 510 is set to "XYZ 941 D1 12:49 AM OnTime XYZ 875 D4 112: 53PM OnTime NOP 83 A2 12:57 PM OnTime". In step 1003, the inserted data is packed and the data content length is determined to be 71 characters. In step 1004, the instruction content length is set to a hexadecimal " 47 " value such that the insert instruction 1005 is completely generated.

Delete command 904 and insert command 1005 may be sent in separate messages, but delete command 904 and insert command 1005 may be sent together as two sub-messages embedded in one FLEXsuite message . In step 1006, two commands are to be associated. The delete command 904 in front of the FLEXsuite status information field 402 is located at the beginning of the insert command 1005 to generate an associated message 1007. Referring again to FIG. 8, an indication 803 shows an information service message after being acted upon by an insert command 1005.

11 is an example of an information service message listing arrivals at the aerodrome, further describing the use of the delete command 400 and the insert command 500. Indication 1101 is shown as displayed on display 228 of optional calling device 130. Note that the messages are presorted according to their departure time. Subsequent to the configuration of the message that generated the display 1101, the information service provider computer 101 receives information from one of the information supply units 103 that the aircraft "XYZ 13" has been delayed to arrive at 12:31 PM. As a result, the software in the information service provider computer 101 configures the delete instruction 1204 (FIG. 12) to delete the entire line "XYZ 13 D4 12:05 PM OnTime" from the intermediate position in the message. The configuration of the delete instruction 1204 will be described with reference to FIG. 12. At step 1201, topic number 407 is defined as hexadecimal " 78 ". Data offset 408 is defined as 125 because the first character of the deleted portion is 125 characters from the beginning of the message. The data length is defined as 25 because the deleted part is 25 characters. In step 1202, the command is constructed. The instruction number 403 is hexadecimal "28". The data conversion identifier 405 is "2". The major version number 406 is "1". The data offset k is hexadecimal "7D". The erase length 409 is hexadecimal "19". In step 1203, the command content length 404 is "04", which means that there is 4 bytes in a portion of the command following the command content length field. The completed delete command 1024, 6 bytes in length, is "280421787D19". The information service provider computer 101 forwards the delete instruction 1204 to the selective calling system 100. The selective calling system 100 wirelessly transmits the delete command 1204 to the selective calling device 130 as a buried sub-message with an insert command and other sub-messages within a conventional message of a standard transport layer communication protocol format. . After receiving and decoding the delete command 1024, the optional calling device 130 deletes the line “XYZ 13 D4 12” 05PM OnTime ”and moves the subsequent lines from their previous memory location to the new location so that the deleted line is deleted. Allows the occupied memory location to be occupied by one of the lines of subsequent messages, thereby causing the indication 1102 (FIG. 11) In addition, the selective calling device 103 may have a major stored in memory 222 Change the value of the version number (preferably increments by one) Thus, in this example, the major version number value is changed from "1" to "2" as a result of the delete command 1204. Optional call The software in device 130 may not allow the selective calling device to respond to subsequent change commands, such as insert commands, unless the subsequent change commands have a major version number of the same value as the value stored in memory 222. The.

Hereinafter, referring to FIG. 13, following the configuration of the message that generated the indication 1101, an insertion instruction (eg, the information service provider computer 101 is inserted such that the line "XYZ 13 D4 12:31 PM Delayed" is inserted at an appropriate position in the message) 1305). In step 1301, a field is defined. Topic number 507 is hexadecyl "78". Data offset 508 is 150 because the first character of the portion to be inserted is 150 characters from the beginning of the message. The data length is 25 because there are 25 characters in the inserted part. In step 1302, the command is constructed. The instruction number 503 is hexadecimal "29" for all insert instructions. The data conversion identifier 505 is "2". The major version number is "2". The selective calling device 130 accepts this command because the current value of the major version number is expected to be "2". The 150 byte data offset 508 is converted to hexadecimal " 96 " and then to a decoupable integer " 8116 ". The data length 509 of 25 bytes is converted to hexadecimal "19". The data to insert 510 is "XYZ 13 D4 12:31 PM Delayed". In step 1303, the data to insert 510 is

"B166D2040C59A088D103164E99B1A135044CBB30F9C8"

And the instruction content length 504 is determined to be 27 bytes. In step 1304, the instruction content length 504 is set to the hexadecimal value " 1B ", and the insert instruction 1305, 29 bytes, is to be generated completely. At step 1306, the delete command 1204 and the insert command 1305 are associated. The delete command 1204 located before the FLEXsuite status information field 402 is positioned at the beginning of the insert command 1305 to generate an associated submessage 1307. Referring again to FIG. 11, an indication 1103 represents an information service message after acted upon by an insert command 1305. Generating the display 1103 by deforming the display 1101 using the delete and insert instructions uses fewer bytes compared to performing the same modification using conventional instructions. The conventional sequential topic range update command has a disadvantage of requiring one command having a size of 51 bytes. The use of the associated delete command 1204 and the insert command 1035 according to the present invention uses only 36 bytes. Preferably, after receiving a communication from one of the information supply units 103 in need of modification, the information service provider computer 101 uses software instructions to make each possible method of applying the desired modification from a list of stored FLEXinfo instructions. Configure all commands executed by. Next, the information service provider computer 101 compares the total number of bytes used in each method, and selects the method of the least byte.

The method according to the invention is also applicable to graphic messages. Hereinafter, with reference to FIG. 14, examples of graphic information service messages displayed on the display 228 of the selective calling device 130 are shown with the charts shown in the displays 1401, 1411, and 1421. Zigzag lines 1402, 1412, and 1422 in the chart may represent, for example, a change in stock values over a period of time, where the vertical axis represents time, the number represents time, for example "11" is 11: 00AM. The distance between each hash mark on the horizontal axis represents a five minute period. The vertical axis represents the stock value, where the number represents a value such as dollar, that is, "75" represents $ 75.00. In order to easily understand the present invention, it is assumed that the image area of the chart is vertically 48 pixels horizontally 140 pixels. Thus, the chart can appear on size 48x140 pixels. The chart appears on a display with the majority of pixels, in which case the chart maintains a size of 48x140 pixels and cannot fill this display. Alternatively, an arbitrary sized display 228 with any number of pixels is used to select a chart of convenient size.

Each dotted box shown in the chart is the size of 15 pixels vertically 8 pixels horizontally, except that the six dashed boxes on the left side of the chart are 8 pixels vertically and 20 pixels horizontally. Has The dashed box indicates a predetermined chart portion that can be deleted or inserted respectively by the delete command 400 and the insert command 500 according to the present invention. It should be understood that the dashed box does not appear on the display 228 of the optional calling device 130 when the chart is displayed. The dashed box is shown in the drawings only to aid in understanding the invention. The six dashed boxes on the leftmost side of the chart contain the vertical and vertical axis numbers, which are generally indicated by the marks 1401, 1411, and zigzag lines 1402, 1411, and 1421 because they are always on the right side of the larger dashed box. 1421 is not changed even if it changes. The size and number of dashed boxes are selected for convenience; The method according to the invention is also applicable to dotted boxes of different sizes and numbers.

Preferably, the Motorola Paging Graphics Format is used, and the data needed to determine the size of the chart and other data is in a graphic header having a size of 6 bytes. Preferably, the method according to the invention can be used when each pixel consists of more than one bit, but each pixel is one bit. The first visible pixel in the graphical information service message, such as the charts of indications 1401, 1411, and 1421, is carried in the seventh byte of the message data of the information service submessage. Thus, the insertion or deletion of the first visible pixel of the graphical information service message has data offsets 408 and 508 of the value "6". Indeed, since the pixel is inserted or deleted into bytes of eight vertical pixels, the first eight pixels have a data offset value of "6". It is desirable that a byte of eight vertical pixels with data offsets 408 and 508 of the value "6" is located in the upper left corner of the display 228.

It is assumed that the shapes of the zigzag lines 1402, 1412, 1422 are updated every 5 minutes. Normally, a chart (not shown) is generated by a conventional original message command and then deformed at a 5-minute interval by a conventional refresh command to obtain the chart indicated by the display 1401. Zigzag line 1402 reflects fluctuations in stock values from 10:15 AM to 12:15 PM. Only message area, such as message memory 226, is allocated to store only one information service message, such as the graphical information service shown in indications 1401, 1411, 1421. The chart shown in indication 1401 indicates the complete space allocation in message memory 226 for this topic number 407, 507. Thus, the old part of the chart shown in indication 1401 must be deleted before the most recent part can be stored. The delete command 400 according to the present invention is used to delete the left portion 1403 of the chart, including the leftmost segment of the zigzag line 1402, representing the oldest 15 minute stock value.

FIG. 15 is a flow chart 1500 illustrating the generation of delete instructions 1504-1509 used to modify the information service message shown in indication 1401 of FIG. 14. In step 1501, the topic number 407 for the information service message in FIG. 14 may be referred to as hexadecimal " 99. " Steps 1501-1503 are substantially similar to steps 901-903 of the flowchart 900 of FIG. 9 and steps 1201-1203 of the flowchart 1200 of FIG. Six deletion commands are used to delete the left portion 1403. Each of the six delete instructions corresponds to one of six dashed boxes in the left portion 1403. For reasons that do not need to be fully explained to understand the invention, the bottom dotted box is first deleted; Thus, the delete command 1504 is generated first. Secondly, the dashed box on the bottom dashed box is deleted with a delete command 1505 or the like. Finally, the upper dotted line box is deleted with the delete command 1509. After receiving and decoding the delete instructions 1504-1509, the selective calling apparatus deletes data corresponding to the left portion 1403 of the chart from the message memory 226. The display 141 indicates the graphic information service message of the display 1401 (reflecting the content of the message memory 226) after the action by the delete commands 1504-1509.

The insert command 500 according to the present invention is used to add the right portion 1413 of the chart, including the right segment 1423 of the zigzag line 1422 representing the stock value of the latest five minutes. FIG. 16 is a flow chart 1600 illustrating the generation of an insert instruction 1605-1610 used to transform the information service message shown in indication 1411 of FIG. 14. Steps 1601-1604 are substantially similar to steps 1001-1004 in the flowchart 1000 of FIG. 10 and steps 1301-1304 of FIG. It is to be understood that the six insert instructions are used to add the right portion 1413. Each of the six insert instructions corresponds to one of six bottom line boxes in the right portion 1423. The upper dashed box is added first; Thus, insert instruction 1605 is generated first. Secondly, an insert command 1606 is generated, a dashed box below the upper dashed box is added, and so on. Finally, the bottom dashed box is added to the insert command 1610. After receiving and decoding the insert instruction 1605-1610, the selective calling apparatus 130 adds data corresponding to the right portion 130 of the chart to the message memory 226. Indication 1421 represents a graphical information service message of indication 1411 after being acted upon by insert instructions 1605-1610. According to the present invention, one delete command and one insert command are used to remove and add portions of the charts in each dotted box, respectively.

FIG. 17 illustrates a step 1701 of associating a delete command 1504-1509 of FIG. 15 with an insert command 1605-1610 of FIG. 16 to form an association command 1702. Step 1701 is substantially similar to step 1006 of FIG. 10 and step 1306 of FIG. 13.

The method according to the invention does not require any change to an existing selective calling system or an existing transport level paging protocol.

While a preferred embodiment of the present invention has been described in detail, it will be understood that many variations thereof are possible without departing from the scope of the invention as set forth in the appended claims. For example, since a single FLEX address is preselected for each group of topic numbers (subaddresses) that share a similarly formatted submessage, the delete command 400 (and similarly the insert command 500) It is amended that only one delete command is required to modify multiple fields of multiple submessages, ie multiple fields of multiple information service topics. In addition, although the Motorola paging graphic format is used in this example, the delete command 400 and the insert command 500 may use the Windows bitmap format (.BMP), graphic interchange format (.GIF), and tag image file format (.TIF). Or other uncompressed graphics formats, such as .TIFF) and X PixMap format (.XPM). Moreover, the present invention is not limited to that used for the FLEX transmission wireless paging protocol but may be used for other paging protocols. In addition, the present invention is not limited to that used for the radio selective calling protocol but may be used for other radio protocols. In addition, the present invention is not limited to that used in the wireless protocol, but may be used in the wired protocol.

Claims (10)

Optional calling device comprising a processor coupled to a memory element, the selective calling device receiving a signal transmitted in a standard transport layer communication protocol format, each signal comprising an address portion and a message portion, wherein the message portion is at least one information In a method comprising: modifying an information service message stored in the memory device; (a) receiving a signal comprising an information service message and storing the information service message in the memory device; (b) subsequent to step (a), receiving an insertion command as a submessage in the message portion of the standard transport layer communication protocol format, the insertion command including an additional signal to the information service message and further including the information. Contains a parameter specifying a location in a service message; (c) determining whether the selective calling apparatus is allowed to receive the additional signal; And (d) in response to said determining step, modifying said memory element in a manner in accordance with said addition and insertion instructions such that the size of said information service message is increased by a size substantially equal to that of said additional signal; Modification method of an information service message comprising a. 2. The modification of an information service message according to claim 1, wherein said modifying step includes inserting said additional signal into a location of said information service message specified by said parameter and storing said additional signal in said memory element. Way. An optional calling device comprising a processor coupled to a memory element, the selective calling device configured to receive a signal transmitted in a standard transport layer communication protocol format, each signal including an address portion and a message portion, the message portion being at least one A method of modifying an information service message stored in the memory device, comprising: (a) receiving a signal including an information service message and storing the information service message in the memory device; (b) subsequent to step (a), receiving a delete command in the message portion of the standard transport layer communication protocol format, the delete command comprising a parameter describing a portion of the information service message, Some have size-; (c) determining whether the selective calling device is authorized to receive the delete command; And, (d) modifying the memory element in a manner according to the parameter and the delete command in response to the determining step such that the size of the information service message is reduced by a size substantially equal to the size of the portion; And transforming the information service message stored in the memory device. 4. A method according to claim 3, wherein the modifying step includes deleting from the memory element a portion of the information service message described by the parameter. In an optional calling device comprising a processor coupled to a memory element, the selective calling device configured to receive a signal transmitted in a standard transport layer wireless selective calling communication protocol format, the signal including an address portion and a message portion; A method of modifying a message stored in said memory device: (a) receiving a signal including a message and a major version number and storing the message and the major version number in the memory device; (b) following step (a), receiving a delete command in the message portion of the standard transport layer radio selective paging communication protocol format, the delete command including a parameter for deleting a portion of the message; (c) comparing the major version number received in step (a) with the major version number received in step (b) to determine whether the selective calling device is authorized to receive the delete command. Determining from said major version number of; And, (d) deleting a part of the memory element in a manner according to the parameter, the memory only when the major version number received in step (a) matches the major version number received in step (b) Part of Device Deleted- How to modify the message stored in the memory device comprising a. In an optional calling device comprising a processor coupled to a memory element, the selective calling device configured to receive a signal transmitted in a standard transport layer wireless selective calling communication protocol format, the signal including an address portion and a message portion; A method of modifying a message stored in said memory device: (a) receiving a signal including a message and a major version number and storing the message and the major version number in the memory device; (b) following step (a), receiving an insert command in the message portion of the standard transport layer radio selective paging communication protocol format, the insert command comprising an additional signal to the message; (c) comparing the major version number received in step (a) with the major version number received in step (b), wherein the signal indicates whether the selective calling device is authorized to receive the insert command. Determining from said major version number of; And, (d) adding said additional signal to said memory element in a manner according to said insertion command, when said major version number received in step (a) matches said major version number received in step (b) Only added to the memory element − How to modify the message stored in the memory device comprising a. An optional calling device comprising a processor coupled to a memory element, the selective calling device configured to receive a signal transmitted in a standard transport layer wireless selective calling communication protocol format, the signal comprising an address portion and a message portion, the message A portion includes at least one submessage and at least one associated subaddress, the method comprising: modifying a submessage stored in the memory element: (a) receiving a signal comprising a submessage and a related subaddress and storing the submessage and a related message in the memory device; (b) subsequent to step (a), receiving an insertion command in the message portion of the standard transport layer radio selective calling communication protocol format, wherein the insertion command is a major version number, a subaddress and an additional signal to the submessage. Wherein the sub-address corresponds to a corresponding sub-message; (c) determining from the major version number of the insert command whether the selective calling apparatus is authorized to receive the additional signal; And (d) in response to the determining step, modifying the value of the major version number and modifying the memory element in a manner according to the subaddress of the associated submessage and the insertion command. How to modify the sub-message stored in the memory device comprising a. An optional calling device comprising a processor coupled to a memory element, the selective calling device configured to receive a signal transmitted in a standard transport layer wireless selective calling communication protocol format, the signal including an address portion and a message portion, the message A portion includes at least one submessage and at least one associated submessage, the method comprising: modifying a submessage stored in the memory element: (a) receiving a signal including a subaddress associated with a submessage and storing the submessage and the associated subaddress in the memory device; (b) following step (a), receiving a delete command in the message portion of the standard transport layer radio selective paging communication protocol format, wherein the delete command includes a major version number, a subaddress, and a portion of the submessage. A descriptive parameter, wherein the subaddress corresponds to a corresponding submessage; (c) determining from the major version number of the delete command whether the selective calling device is authorized to receive the delete command; And (d) in response to said determining step, changing a value of said major number and modifying said memory element in a manner in accordance with an associated subaddress of said submessage and said erase command; Method of modifying a sub message stored in a memory device comprising a. In an information service provider computer that sends a message to an optional calling system that delivers the message as a submessage to a selective calling device, a series of modified messages from the information service provider computer, each modified message being a memory of the selective calling device. A method of transmitting to a selective calling system a submessage stored in a device, wherein the submessage has a version number and each variant message has a version number. (a) presetting a current value of the version number; (b) sending a modification message containing the current value of the version number to the selective calling system; (c) changing the current value of the version number; And (d) repeating steps (a) and (b) until each variant message in the series of variant messages has been sent; A method of transmitting to a selective calling system of a series of variant messages comprising a. 10. The method of claim 9, wherein the modification message is at least one of the delete command and the insert command.