JP2000036806A - Information data extract system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To store information data without reserving/releasing area in a memory and to store the information data, even if a reception speed of a multi-frame signal is fast. SOLUTION: A received data storage control section 1 stores received data included in a multi-frame signal to a storage memory 3 every time it receives the data, compares information data consisting of the received data received this time with the information data received precedingly and aborts the information data received this time, by overwriting information data which is to be received next on the information data received this time, when they are identical. A received data read analysis section 2 confirms the sequence of the information data that are stored in the storage memory 3 and received precedingly and writes a head storage address of the information data received precedingly to the storage memory 3 to an analysis end management table 4, when the sequence is normal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information data extracting method, and more particularly to an information data extracting method for receiving a multi-frame signal and extracting information data from the multi-frame signal.

[0002]

2. Description of the Related Art Conventionally, this type of information data extraction method has
A multi-frame signal is used to store normal and valid information data among information data including information to be transmitted included in the multi-frame signal in a memory called a transaction memory.

In the conventional information data extraction system, a certain area in the transaction memory is reserved for storing received information data, and this information data is stored in the reserved area. Then, the normality of the information is verified by a cyclic redundancy code (CRC) or the like. If the information data is abnormal data, the area in the transaction memory where the data is stored is released and the information data is discarded. When the information data is normal data, the information data received this time is compared with the previously stored normal valid information data to confirm whether the data is valid data,
If they match, the information data received this time is regarded as invalid data, and the area in the transaction memory where the data is stored is released to discard the information data. If they do not match, the information data received this time is regarded as valid data, the order of the information data is checked, and the information data is stored in the transaction memory as it is. The receiving and storing process described above from receiving the information data to storing it as normal and valid information data in the transaction memory as it is is performed until the next information data is received from the multiframe signal after receiving the multiframe signal. The receiving and storing process for the received information data is sequentially performed.

[0004]

In the conventional information data extraction method described above, in order to store received information data, a certain area in the transaction memory is secured, and this information data is stored in the secured area. When the information data is abnormal data, the area in the transaction memory where the data is stored is released and the information data is discarded. When the information data is invalid data, the information data is discarded. Since the area in the transaction memory where data is stored is released, it is necessary to secure or release a certain area in the transaction memory in order to store normal and valid information data. There was a problem that it took time to secure and release. In addition, the receiving and storing process from receiving the information data to storing it as normal and valid information data in the transaction memory as it is must be performed between receiving the multiframe signal and extracting the next information data from this signal. Therefore, when the speed of the received multi-frame signal is high, there is a problem that the receiving and storing process cannot be performed in time.

[0005] An object of the present invention is to eliminate such a conventional drawback, and it is not necessary to secure or release an area in a memory for storing normal and valid information data. It is an object of the present invention to provide an information data extraction method that can store normal and valid information data even when a signal speed is high.

[0006]

According to a first information data extracting method of the present invention, a multi-frame signal composed of a plurality of frames each having a predetermined number of time slots is received, and information is extracted from the multi-frame signal. In the information data extraction method for extracting data, data (received data) of a predetermined time slot among the time slots is received for a plurality of the predetermined multi-frame signals, and the received data is configured. The information data received this time among the information data is compared with the information data received last time, and when the information data received this time is the same as the information data received last time, the information data received this time is discarded. The order of the information data received last time is checked, and if the order is normal, Information data is set as the normally been received.

According to a second information data extracting method of the present invention, a multi-frame signal composed of a plurality of frames each having a predetermined number of time slots is received, and information data is extracted from the multi-frame signal. In the information data extraction method, data (received data) of a predetermined time slot among the time slots
A storage memory for storing the received data included in the multi-frame signal, the information is stored in the storage memory each time the received data is received, and the information data is configured by the received data for a plurality of predetermined multi-frame signals. Storing received data for comparing the information data received this time with the information data received last time and discarding the information data received this time when the information data received this time is the same as the information data received last time The control unit, confirms the order of the previously received information data stored in the storage memory, and when the order is normal, the storage address of the head of the previously received information data to the storage memory, Received data to be written to the analysis completion management table that collects the storage start addresses of normal information data among the received information data A reading analysis unit, and a read analysis result management unit that outputs a signal indicating that new normal information data has been successfully received when the head address of the information data is written in the analysis completion management table. And is provided.

Further, a third information data extracting method according to the present invention receives a multi-frame signal composed of a plurality of frames each having a predetermined number of time slots, and extracts information data from the multi-frame signal. In the information data extraction method, a storage memory for storing data (reception data) of a predetermined time slot among the time slots, and an address of the storage memory for storing the reception data in the storage memory are managed and stored. A third memory, a second memory for managing and storing a head address when the information data being received is stored in the storage memory, and a second memory for storing the information data received last time. A first memory for managing and storing a head address of information data; Each time the received data included is received for the information data and received, the received data is stored in the address of the storage memory stored in the third memory in order from the address of the storage memory stored in the second memory. Then, the third memory is incremented, and the information data received this time and the information data received last time among the information data constituted by the reception data for the plurality of predetermined multi-frame signals are compared. When the comparison result indicates that they are not the same, the content of the second memory is set in the first memory, the content of the third memory is set in the second memory, and the information data received this time is A receiving data storage controller for discarding the information data, and confirming the order of the previously received information data stored in the storage memory, and confirming that the order is correct. At the time of reading the received data, the storage address of the head of the information data received last time in the storage memory is written to the analysis completion management table in which the storage head addresses of the normal information data among the received information data are collected. An analysis unit, when the storage address at the head of the information data is written in the analysis completion management table, a read analysis result management unit that outputs a signal indicating that new normal information data has been successfully received; It is provided with.

According to a fourth information data extraction method of the present invention, a multi-frame signal composed of a plurality of frames each having a predetermined number of time slots is received, and information data is extracted from the multi-frame signal. In the information data extraction method, data (received data) of a predetermined time slot among the time slots
, A third memory for managing and storing an address of the storage memory when the received data is stored in the storage memory, and a head for storing the information data being received in the storage memory. A second memory for managing and storing an address; and a first memory for managing and storing a head address of the information data in the storage memory in which the information data received last time is stored. Each time the received data included is received for the information data and received, the received data is stored in the address of the storage memory stored in the third memory in order from the address of the storage memory stored in the second memory. Then, the third memory is incremented, and the information constituted by the reception data of a plurality of the predetermined multi-frame signals is incremented. The information data received this time among the data is compared with the information data received last time, and when the comparison result indicates that they are not the same, the contents of the second memory are set in the first memory, A received data storage control unit that sets the contents of the memory of No. 3 in the second memory and discards the information data received this time;
Managing and storing an address of the storage memory when reading the reception data stored in the storage memory;
A fourth memory having the same content as the content of the memory in advance, and comparing the content of the first memory with the content of the fourth memory, and when the comparison result is not the same, It is determined that the information data has been newly received, and the previously received information data stored in the address of the storage memory stored in the first memory is stored in the first memory for each of the reception data constituting the information data. The content of the fourth memory is read from the address of the storage memory stored in the fourth memory sequentially from the address of the storage memory stored in the fourth memory while incrementing the content, and the order of the read information data is confirmed. When the order is normal, the first address of the information data in the storage memory in which the information data is stored is set to A received data reading / analyzing unit that writes a storage start address of normal information data into an analysis completion management table, and a new normal when the storage address of the information data is written into the analysis completion management table. A read analysis result management unit that outputs a signal indicating that the information data has been successfully received.

[0010]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of an information data extraction system according to the present invention.

The present embodiment shown in FIG. 1 receives a multi-frame signal composed of a plurality of frames each having a predetermined number of time slots and extracts information data 9 from the multi-frame signal. In the method, a storage memory 3 for storing data (reception data) of a predetermined time slot among the time slots, and a storage memory 3 for storing reception data included in the multi-frame signal each time the reception data is received. The information data 9 received this time and the information data 9 received last time among the information data 9 constituted by the reception data for a plurality of multi-frame signals are compared, and the information data 9 received this time and the information data 9 received last time are compared. Received data storage control unit 1 for discarding the information data 9 received this time at the same time
And the previously received information data 9 stored in the storage memory 3
When the order is normal, the storage address of the head of the previously received information data 9 in the storage memory 3 is changed to the storage head of the normal information data 9 among the received information data 9. The received data reading / analyzing unit 2 which writes the addresses in the analysis completion management table 4 and the normal information data 9 can be newly received when the head storage address of the information data 9 is written in the analysis completion management table 4. And a reading analysis result management unit that outputs a signal indicating the fact.

The information data 9 is destroyed by overwriting the information data 9 to be received next time with the information data 9 to be destroyed.

The received data storage controller 1 manages and stores the address of the storage memory 3 when storing the received data in the storage memory 3 (storage management memory 7).
And a second memory 6 for managing and storing a head address when the information data 9 being received is stored in the storage memory 3 (a head address management memory 6 for information data being received) and the information data 9 received last time. First memory 5 for managing and storing the head address of information data 9 in storage memory 3
(Previous reception information data head address management memory 5), and receives the reception data included in the multi-frame signal for the information data, and stores the address of the storage memory 3 stored in the second memory 6 every time the reception data is received. The third memory 7 is sequentially stored at the address of the storage memory 3 stored in the third memory 7 and the third memory 7 is incremented. The received information data 9 and the previously received information data 9 are compared, and when the comparison result indicates that they are not the same, the contents of the second memory 6 are set to the first memory 5 and the contents of the third memory 7 are set. Is set in the second memory 6, and the information data 9 received this time is discarded.

The received data reading / analyzing section 2 manages and stores the address of the storage memory 3 when reading out the received data stored in the storage memory 3 and stores the same contents as the contents of the first memory 5 in advance. And the contents of the first memory 5 and the contents of the fourth memory 8 are compared, and when the result of the comparison is not the same, new information data 9 is stored. The previously received information data 9 stored at the address of the storage memory 3 stored in the first memory 5 upon determining that the
The contents of the fourth memory 8 are read out in increments from the address of the storage memory 3 stored in the fourth memory 8 in order from the address of the storage memory 3 stored in the first memory 5 for each received data constituting The order (from the sequence number) of the read information data 9 is confirmed, and when the order is normal, the head address of the information data 9 in the storage memory 3 in which the information data 9 is stored is determined by the received information data 9 Are stored in the analysis completion management table 4 which collects the storage start addresses of the normal information data 9 among them.

The order of the information data 9 is confirmed by a sequence number indicating the order of the information data 9 included in the information data 9.

Next, the operation of the information data extraction method according to the present embodiment will be described in detail with reference to FIGS. 2, 3 and 4.

FIG. 2 is a diagram showing an example of the state of storage in the storage memory. For example, the address “1000H (1000 hex) of the storage memory 3 stored in the first memory 5 is shown.
Address) of the storage memory 3 stored in the second memory 6 at the address “1000H + the size of the information data 9”, the previously received information data 9 is stored, and the information data 9 being received this time is being stored. This indicates that the information data 9 has been stored halfway from the address of the storage memory 3 stored in the second memory 6 to the address stored in the third memory 7.

FIG. 3 is a flowchart showing an example of the operation of the received data storage control unit.

FIG. 4 is a flowchart showing an example of the operation of the received data reading / analyzing unit.

FIG. 5 is a diagram showing an example of the relationship between the received data, the multi-frame and the information data. A multi-frame is composed of eight frames each having 32 time slots.
The data of S4 is set as a reception object, and is used as reception data.
It indicates that it is. The information data 9 is a sequence number (SN) indicating the order of the information data 9.
And a cyclic redundancy code (CRC) for checking the normality of the information data 9.

FIG. 6 is a diagram showing an example of the relationship between the state of storage in the storage memory and the analysis completion management table 4.

In FIG. 1, if the storage start address of the received data in storage memory 3 is, for example, 1000H (hexadecimal address 1000), each memory in received data storage control section 1 and received data reading / analyzing section 2 has Sets 1000H as an initial value. Each memory is
A first memory 5 (previous reception information data head address management memory 5, hereinafter referred to as a previous reception information data head address management memory 5), a second memory 6 (reception information data head address management memory 6, and thereafter) , Receiving information data head address management memory 6), third memory 7 (storage management memory 7, hereinafter referred to as storage management memory 7).
It is described. ) And a fourth memory 8 (read address management memory 8, hereinafter referred to as read address management memory 8).
It is described. ).

The received data storage control unit 1 determines the start of a multiframe from an incoming signal by, for example, MD (Modi).
A search is performed by detecting a violation (a place where the regularity of “0” and “1” is not maintained) of the feed dipulse code, and the received data in the TS4 for 10 multiframes is detected and information is detected. Data 9 is assumed. That is, the multi-frame is detected, the received data in the frame is received (S1), and this data is stored in the storage memory 3 stored in the receiving information data head address management memory 6.
Are sequentially stored in the addresses of the storage memory 3 stored in the storage management memory 7 starting from the first address, and the contents of the storage management memory 7 are incremented (for example, 1 Byte, which is the size of the received data, is added) (S2). When a predetermined number (here, 10) of received data (here, 80) of multi-frames, that is, information data 9 is received (S3), the normality of the bit string constituting the information data 9 is shown in FIG. Check using the indicated CRC bit (S
4) If the checked result does not indicate normal, a retransmission request is output (S5), and the contents of the receiving information data head address management memory 6 are stored in the storage management memory 7 in order to restore the contents of the storage management memory 7 to the original state. Is set (S6), and the process continues to step S1. When the result of the check in step S4 indicates normal, it is not checked whether or not there is information data 9 received last time (that is, at the time of the first reception).
Continue to step S8, the information data 9 received last time
If there is, it is checked whether the previously received information data 9 is the same as the currently received information data 9 (S7). When the result of the investigation indicates that they are the same, this information data 9 is determined to be retransmitted data, and the information data 9 to be received next time is overwritten so as to be discarded and discarded. The contents of the address management memory 6 are set in the storage management memory 7 (S6), and the process continues to step S1. If the result of the check in step S7 does not indicate that they are the same, the contents of the receiving information data head address management memory 6 are set in the previous reception information data head address management memory 5 (S8), and the contents of the storage management memory 7 are stored. It is set in the receiving information data head address management memory 6 (S9), and the process continues to step S1.

On the other hand, the received data reading / analyzing section 2 always detects the contents of the previous received information data start address management memory 5 and the contents of the read address management memory 8 in order to detect whether or not there is new information data 9 stored therein. A check is made to determine when the content does not match (S41). If the content does not match, the previously received information data 9 stored in the address of the storage memory 3 stored in the previous received information data head address management memory 5 is replaced with the information data 9 The contents of the read address management memory 8 are incremented from the address of the storage memory 3 stored in the read address management memory 8 in order from the address of the storage memory 3 stored in the previous received information data head address management memory 5 for each of the received data constituting (Received data size, for example, 1 By
te is added), and the order of the read information data 9 is changed as shown in FIG.
(S42), and if the order is not normal, the process proceeds to step S41. When the order confirmed in step S42 is normal, the head address of the information data 9 in the storage memory 3 in which the information data 9 is stored (that is, the content of the previous reception information data head address management memory 5) is
The storage start address of the normal information data 9 among the received information data 9 is written in the analysis completion management table 4 which is collected (S43), and the process continues to step S41. That is, as shown in FIG.
If normality cannot be confirmed in the area indicated by BH, the address indicating BBBBH is not stored in the analysis completion management table 4. By referring to the stored contents of the analysis completion management table 4, it is possible to eliminate the need to change the storage area of the storage memory 3. By referring to the contents stored in the analysis completion management table 4, the position of the normal information data 9 in the storage memory 3 can be known.

[0026]

As described above, according to the information data extraction method of the present invention, a multi-frame signal composed of a plurality of frames each having a predetermined number of time slots is received, and the multi-frame signal is received. In an information data extraction method for extracting information data, a storage memory for storing data (received data) of a predetermined time slot is provided, and the received data included in a multi-frame signal is received by a received data storage control unit every time the received data is received. The information stored in the storage memory indicated by the second memory is stored in order from the address, and the information data received this time and the information data received last time out of the information data composed of the reception data for a plurality of predetermined multi-frame signals are stored. When the information data is the same, the information data received this time is received next time The received information data is discarded by overwriting the information data received this time, and the received data reading / analyzing unit 2 checks the order of the previously received information data stored in the storage memory. Then, the storage address of the head of the previously received information data in the storage memory is written in the analysis completion management table which collects the storage head addresses of the normal information data among the received information data, and read by the analysis result management unit. ,
When the head storage address of the information data is written in the analysis completion management table, a signal indicating that new normal information data was successfully received is output. Each time data is received, information data is stored in order from the address in the storage memory indicated by the second memory, and when the information data received this time is the same as the information data received last time, the information data received this time is stored in the next time. The information data received this time is discarded by overwriting the information data received this time, so there is no need to secure or release an area in memory to store the information data, and to store the received data. Each time data is received by the control unit, it is stored separately in the storage memory for each information data, and stored by the received data reading and analyzing unit. When the last to confirm the order of the received information data normally stored in the memory, because writing the storage address to the beginning of the memory storing information data received this last on the analysis complete management table, i.e.,
Independently of the received data storage control unit that stores received data every time it is received, the received data reading and analyzing unit performs hierarchical processing so as to analyze information data. Can accumulate information data even if it is fast.

Further, the reading analysis result management unit provides
By managing the analysis completion management table that collects the storage start addresses of the normal information data among the received information data, the transfer between memories for data management is eliminated,
Since the processing time spent for transferring data between memories can be suppressed, it is possible to allow time for performing control processing such as data processing and data transfer procedure monitoring processing.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of an information data extraction method according to the present invention.

FIG. 2 is a diagram illustrating an example of a storage state in a storage memory.

FIG. 3 is a flowchart illustrating an example of an operation of a reception data storage control unit.

FIG. 4 is a flowchart illustrating an example of an operation of a reception data reading and analyzing unit.

FIG. 5 is a diagram illustrating an example of a relationship among received data, multiframes, and information data.

FIG. 6 is a diagram illustrating an example of a relationship between a storage state in a storage memory and an analysis completion management table.

[Explanation of symbols]

Reference Signs List 1 received data storage control unit 2 received data reading / analyzing unit 3 storage memory 4 analysis completion management table 5 first memory (previous reception information data head address management memory) 6 second memory (reception information data head address management memory) 7 third memory (storage management memory) 8 fourth memory (read address management memory) 9 information data

Claims (7)

[Claims] 1. An information data extraction method for receiving a multi-frame signal composed of a plurality of frames each having a predetermined number of time slots and extracting information data from the multi-frame signal, wherein: The data (reception data) of a predetermined time slot is received for a plurality of the predetermined multi-frame signals, and the information data received this time and the information data received last time out of the information data constituted by the received reception data are received. When the information data received this time is the same as the information data received last time, the information data received this time is discarded, the order of the information data received last time is confirmed, and the order of the information data received last time is confirmed. When the information is normal, the information data is normally received. Information data extraction method according to claim. 2. An information data extraction method for receiving a multi-frame signal composed of a plurality of frames each having a predetermined number of time slots and extracting information data from the multi-frame signal, wherein: A storage memory for storing data (reception data) of a predetermined time slot, and storing the reception data included in the multi-frame signal in the storage memory each time the reception data is received, for storing a plurality of predetermined multi-frame signals. Comparing the information data received this time and the information data received last time among the information data constituted by the received data of the above, and when the information data received this time is the same as the information data received last time, A reception data storage control unit for discarding the received information data, and the storage memo Check the order of the previously received information data stored in the memory, and when the order is normal, determine the storage address of the head of the previously received information data in the storage memory in the received information data. A reception data reading / analyzing unit which writes the storage start address of the normal information data into the analysis completion management table, and a new normal when the storage address at the head of the information data is written into the analysis completion management table. A read analysis result management unit that outputs a signal indicating that the information data has been successfully received. 3. An information data extraction method for receiving a multi-frame signal composed of a plurality of frames each having a predetermined number of time slots and extracting information data from the multi-frame signal, wherein: A storage memory for storing data of a predetermined time slot (reception data), a third memory for managing and storing an address of the storage memory when storing the reception data in the storage memory,
A second memory for managing and storing a head address when the information data being received is stored in the storage memory, and a head address of the information data of the storage memory in which the previously received information data is stored is managed. 1st to remember
And the reception data included in the multi-frame signal is received for the information data, and every time the reception data is received, the third memory is sequentially stored from the address of the storage memory stored in the second memory. The third memory is stored at the address of the storage memory stored in the memory of the third memory, and the third memory is incremented, and the information received this time out of the information data constituted by the reception data for the predetermined plurality of multi-frame signals is stored. Comparing the data with the information data received last time, and when the comparison result indicates that they are not the same, the content of the second memory is set in the first memory, and the content of the third memory is stored in the second memory. A reception data storage control unit configured to set the memory and discard the information data received this time; and The order of the information data is confirmed, and when this order is normal, the storage address of the head of the previously received information data in the storage memory is set to the storage head of the normal information data among the received information data. A reception data reading / analyzing unit for writing an address to the analysis completion management table, and when the storage address at the head of the information data is written to the analysis completion management table, new normal information data can be received. A reading analysis result management unit that outputs a signal indicating the following. 4. An information data extraction method for receiving a multi-frame signal composed of a plurality of frames each having a predetermined number of time slots and extracting information data from the multi-frame signal, wherein: A storage memory for storing data of a predetermined time slot (reception data), a third memory for managing and storing an address of the storage memory when storing the reception data in the storage memory,
A second memory for managing and storing a head address when the information data being received is stored in the storage memory, and a head address of the information data of the storage memory in which the previously received information data is stored is managed. 1st to remember
And the reception data included in the multi-frame signal is received for the information data, and every time the reception data is received, the third memory is sequentially stored from the address of the storage memory stored in the second memory. The third memory is stored at the address of the storage memory stored in the memory of the third memory, and the third memory is incremented, and the information received this time out of the information data constituted by the reception data for the predetermined plurality of multi-frame signals is stored. Comparing the data with the information data received last time, and when the comparison result indicates that they are not the same, the content of the second memory is set in the first memory, and the content of the third memory is stored in the second memory. A reception data storage control unit configured to set the information data in the memory and discarding the information data received this time; and the reception data stored in the storage memory. Manages and stores the address of the storage memory when reading
A fourth memory having the same content as the content of the memory in advance, and comparing the content of the first memory with the content of the fourth memory, and when the comparison result is not the same, It is determined that the information data has been newly received, and the previously received information data stored in the address of the storage memory stored in the first memory is stored in the first memory for each of the reception data constituting the information data. The content of the fourth memory is read from the address of the storage memory stored in the fourth memory sequentially from the address of the storage memory stored in the fourth memory while incrementing the content, and the order of the read information data is confirmed. When the order is normal, the first address of the information data in the storage memory in which the information data is stored is set to A reception data reading / analyzing unit which writes a storage start address of the normal information data into an analysis completion management table, and a normal operation when the storage address of the head of the information data is written into the analysis completion management table. A reading analysis result management unit for outputting a signal indicating that the information data has been successfully received; 5. The discarding of the information data is performed by overwriting the information data to be received next time with the information data to be discarded. 4. The information data extraction method according to 4. 6. The information data according to claim 1, wherein the order of the information data is confirmed by a sequence number indicating the order of the information data included in the information data. Information data extraction method. 7. The information data is discarded by overwriting the information data to be received next time with the information data to be discarded, and the order of the information data is checked by the information data. 5. The information data extraction method according to claim 1, wherein the information data is extracted by a sequence number indicating the order of the information data.