JPH06252982A - Receiving data processor - Google Patents

Abstract

PURPOSE:To surely execute the expansion of a service without exerting influence on a system main body at all even if a service board is added afterwards by having independently a processing load of an expansion function by only an expanding part without exerging influence on the processing load of the system main body part. CONSTITUTION:In an expanding part (B), in order to execute various services, a serial signal from a data receiving part 1 is inputted to a serial/parallel converting part B7 through an expansion slot 6 which becomes a connecting part of a system main body part (A) and the expanding part (B). In the serial/ parallel converting part B7, a processing being equal to a serial/parallel converting part A2 of the system main body part (A). That is, even when a CPU A3 of the system main body part (A) executes only a processing of the main body part, and cannot afford to execute other processing at all, the serial signal of the data receiving part 1 is fetched directly to the expanding part (B) and it is possible to have independently a processing load of an expansion function by only the expanding part (B) without exerting influence on a processing load of the system main body part (A).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a received data processing device for data communication which provides satellite communication services.

[0002]

2. Description of the Related Art FIG. 3 is a diagram showing an example of a basic configuration for performing one service in a conventional received data processing device. A signal flow of data processing and distribution until data is transmitted to one service (output device) will be described with reference to FIG. First, input data from a satellite or the like is received by the data receiving unit 11 and converted into a 2M bit stream serial signal. The converted serial signal is transmitted to the serial / parallel conversion unit 12, and the serial / parallel conversion unit 12 performs data processing including various signal processing, and finally C
It can be changed to a data bus form so that it can be processed by the PU unit 13. The parallel data converted by the serial / parallel converter 12 is processed by the CPU 13.
In the CPU unit 13, the CPU 1 is provided so as to support the service A16 together with the memory unit 14 and the DMA unit 15.
3 and the capacity of the DMA unit 15 is used.

FIG. 4 is a diagram showing a configuration example when a plurality of services (3 services) are provided in a conventional received data processing device. 3 service examples (output device, FA
The signal flow of data processing and distribution until the data is transmitted to the X device and the 64 KBPS board will be described. First,
The data receiving unit 11 receives input data from a satellite or the like and converts it into a 2M bit stream serial signal. The converted serial signal is sent to the serial / parallel converter 12
The serial / parallel conversion unit 12 processes the data including various signal processing, and finally the CPU unit 13 processes the data so that the data bus can be used.
The parallel data converted by the serial / parallel converter 12 is processed by the CPU 13. CPU
The unit 13 uses the capability of the DMA unit 15 together with the CPU 13 so as to support the service A16, the service B17, and the service C18 together with the memory unit 14 and the DMA unit 15.

[0004]

However, in the above method, the CP which constitutes the system depends on whether the service is fixed as one service or supports a plurality of services.
There is a big difference in the capacity and memory capacity of U. Therefore, grasping the capability and configuration of the entire system and fine selection of CPUs are large loads at the time of design. Further, when designing one service fixed at the initial design and adding a service later, the CPU may not be able to support the capacity, and the CPU will be changed after all.

The present invention solves the above problem and does not affect the processing load of the system main unit, and has the processing load of the expanded function only by the expansion unit, and even if a service board is added later. It is an object of the present invention to provide a reception data processing device capable of expanding a service without affecting the processing load on the system itself.

[0006]

In order to solve the above-mentioned problems, a received data processing device of the present invention comprises a data receiving unit for receiving communication data, and a serial signal output from the data receiving unit into parallel data. A system main body section including a serial / parallel conversion section for converting and a CPU control section for processing the data converted by the serial / parallel conversion section, and a signal carrying a serial signal output from the data receiving section A second serial / parallel conversion unit for converting the data into parallel data after passing through an expansion slot for connecting to a line and an information service expansion board;
The expansion board includes a second CPU control section for performing data processing in the expansion board.

[0007]

According to the present invention, with the above configuration, the serial signal from the data receiving unit is directly taken into the expansion board and the processing load of the expansion function is uniquely provided only by the expansion unit without affecting the processing load of the system main unit. With this feature, even if a service board is added later, the system main body is not affected by the processing load and the service can be surely expanded.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.
Will be described with reference to. FIG. 1 is a diagram showing a main configuration of a received data processing apparatus according to an embodiment of the present invention. In FIG. 1, 1 is a data receiving unit for receiving communication data such as satellites, 2 is a serial / parallel converting unit A for converting serial stream data from the data receiving unit 1 into parallel data, and 3 is a serial / parallel converting unit. A CPU unit A for processing parallel data from A2, 4 is a control memory unit of the CPU unit A3, 5 is a DMA unit A used for various data transfer, and 6 is a serial signal from the data receiving unit 1 for each information. An expansion slot unit for connecting to the service expansion board, 7 is a serial / parallel conversion unit B for converting a serial signal from the data reception unit 1 into parallel data in the expansion board, and 8 is a serial / parallel conversion unit B7. CPU parts B, 9 and 10 for processing parallel data are CP
Memory part B for controlling U part B8 and DM for data transfer etc.
It is A section B. Further, (A) shows a system main body part, and (B) shows an expansion part.

The main operation of data reception in the reception data processing device thus configured will be described below. First, when the data receiving unit 1 of the system main unit (A) receives input data such as a satellite, the data receiving unit 1 generates a 2 MHz digital bit stream as a serial signal. The serial signal obtained as a result is input to the serial / parallel conversion unit A2. The serial / parallel conversion unit A2 performs various necessary data conversions (deinterleave, frame synchronization, bucket extraction, etc.) on the input serial data, and supports a data bus compatible with the data processing of the CPU unit A3. Convert to parallel data. Then, the obtained bus data is subjected to data processing (composite processing when the data is encrypted, etc.) by the CPU unit A3 and the memory unit A4 in the system main body (A), and then as necessary (memory). Operations such as data transfer are performed in the DMA unit A5 (between memories, between memory and I / 0).

Further, in the expansion section (B), in order to perform various services, the serial signal from the data receiving section 1 is passed through the expansion slot 6 which serves as a connection section between the system main body (A) and the expansion section (B), and the serial / parallel conversion section. Input to B7. The serial / parallel converter B7 performs the same processing as the serial / parallel converter A2 of the system main body.
That is, when a 2 MHz digital bit stream is input as a serial signal, the serial signal is input to the serial / parallel conversion unit B7. The serial / parallel converter 7 performs the same processing on the input serial data as various necessary data conversions (deinterleave, frame synchronization, bucket extraction, etc.) equivalent to those of the system main body, and the data of the CPU B8. Converts to parallel data that can be processed by a data bus. These processes are performed according to the service content. The data processed and sent to the CPU unit B8 of the expansion unit in the bus data format are then subjected to processing such as data transfer by the memory unit B9 and the DMA unit B10 according to the service content.

FIG. 2 shows the relationship between the system body and the service expansion board. (A) is a system main unit having a data receiving unit, (B) is a service board example A to C
(A; FAX board, B; RS232C board, C; 6
4KBPS board). Considering the above configuration example, since service A to service C have their own serial data processing capability on each service board, the service limitation does not depend on the number of service boards.
Each service can be increased to a level at which the serial data of the data receiving unit 1 of the system main unit (A) can be transferred.

That is, the CPU A3 of the system main body (A)
Even if only the data processing of the main unit is performed and there is no margin for other processing, the service board A independently operates FA of 9600 BPS regardless of the data bus of the system main unit.
X processing is performed, the service board B independently performs the RS232C serial communication service, and the service board C can also independently perform the communication of 64 KBPS as a high-speed service by the expansion board. Only one of these service boards can operate at the same time, two at a time, or three at a time.

[0013]

As described above, according to the present invention, the serial signal of the data receiving unit is directly taken into the expansion board and the processing load of the system main unit is not affected, and the processing load of the expanded function is provided only by the expansion unit. It has its own characteristics, and even if a service board is added later, it does not affect the processing load on the system itself at all, and the service can be surely expanded, which is effective in practice.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a main part of a reception data processing device according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating a three-service configuration in a received data processing device according to an embodiment of the present invention.

FIG. 3 is a block diagram of a conventional received data processing device for one service.

FIG. 4 is a block diagram of a received data processing device for three conventional services.

[Explanation of symbols]

 1 data receiving section 2 serial / parallel converting section A 3 CPU section A 4 memory section A 5 DMA section A 6 expansion slot section 7 serial / parallel converting section B 8 CPU section B 9 memory section B 10 DMA section B A system body section B extension

Claims (1)

[Claims] 1. A data receiving unit for receiving communication data,
A system main body section including a serial / parallel conversion section for converting a serial signal output from the data receiving section into parallel data, and a CPU control section for processing the data converted by the serial / parallel conversion section, A second serial / parallel conversion unit for converting a serial signal output from the data reception unit to parallel data after passing through an expansion slot unit for connecting to an information service expansion board, and data processing in the expansion board. Second C to do
It is composed of an expansion unit having a PU control unit, and directly loads the serial signal from the data receiving unit to the expansion board and does not affect the processing load of the system main unit, so that the processing load of the expanded function can be achieved only by the expansion unit. A reception data processing device that has been made possible.