JPH07193561A - System and device for synchronously processing format - Google Patents

Abstract

PURPOSE:To provide a format synchronous processing system/device by which a synchronization processing by a general-purpose format can speedily be conducted to serial data of a high speed rate, which are made various formats. CONSTITUTION:The format synchronous processing device is provided with a shift register part 10 which parallel-converts inputted serial data which are made into the formats, in an eight bit unit to made them parallel data, a data memory part 30 for temporarily storing word data, a write control part 20 conducting control for making parallel data into words and for storing them in the data memory part 30 as word data and computer part (central arithmetic processing part) 40 detecting the format corresponding to the classification o serial data by checking the contents of word data and outputting word data by a prescribed format by conducting the synchronization processing based on the detected result.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a format synchronization process and apparatus for synchronizing serial data (time series data) of various formats such as earth observation data sent mainly from earth observation satellites.

[0002]

2. Description of the Related Art Conventionally, when configuring a format synchronization processing device for synchronizing serial data of various formats, dedicated hardware (computer) capable of detecting only serial data of a specific format is used as a processing target. Then, the number of hardware corresponding to the type of serial data is prepared.

In such a format synchronization processing device, when low-speed data of about several tens [kbit / s] is usually processed, serial data is converted into a general-purpose format by devising a program in each hardware. It can be synchronized.

[0004]

In the case of the above format synchronization processing device, hardware must be prepared for each type of serial data to be processed.
There is a problem that the configuration of the entire device becomes too large and the cost tends to be high.

Further, in the conventional format synchronization processing device, serial data can be synchronized in a general-purpose format when low-speed data is to be processed, but when high-speed data is to be processed, synchronization processing is performed in a general-purpose format. There is a problem that can not be done.

The present invention has been made to solve such a problem, and its technical problem is to speed up the synchronization processing by a general-purpose format even for variously formatted high-speed serial data. An object of the present invention is to provide a format synchronization processing method and apparatus that can be performed.

[0007]

According to the present invention, parallel data obtained by parallel-converting variously-formatted input serial data in predetermined bit units is converted into words to form word data, By temporarily storing the word data and then checking the contents of the word data, a format synchronization processing method for detecting the format corresponding to the type of the serial data can be obtained.

Further, according to the present invention, a shift register unit for parallel-converting serially input variously-formatted serial data in predetermined bit units into parallel data, and a data memory for temporarily storing word data. Section, write control section for controlling parallel data into words and storing it as word data in the data memory section, and corresponding to the type of serial data by checking the content of the word data stored in the data memory section It is possible to obtain a format synchronization processing device including a central processing unit which detects the format to be output and outputs the word data in a predetermined format based on the detection result.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following is a detailed description of the format synchronization processing system and apparatus of the present invention with reference to the drawings. First, the outline of the format synchronization processing method will be briefly described.

In this format synchronization processing method, parallel data obtained by parallel-converting input variously-formatted serial data in units of predetermined bits (8 bits or 16 bits) is converted into words and formed into word data. Then, after temporarily storing this word data, the content of the word data is checked to detect the format corresponding to the type of serial data.

FIG. 1 is a block diagram showing the basic construction of a format synchronization processing device which adopts this synchronization processing method. This format synchronization processing device includes a shift register unit 10 for converting input variously-formatted serial data into parallel data by parallel conversion in 8-bit units, a data memory unit 30 for temporarily storing word data, The write control unit 20 that controls the parallel data to be wordized and stored in the data memory unit 30 as word data, and the format corresponding to the type of serial data is detected by checking the content of the word data. A computer unit (central processing unit) 40 that outputs word data in a predetermined format based on the detection result.

In this format synchronization processing apparatus, when serial data of various formats is first input from the input terminal 1 to the shift register 10, the shift register 10 performs parallel conversion in units of 8 bits and outputs parallel data. This parallel data is stored in the word memory format in the data memory unit 30 through the write control unit 20 every time one bit of serial data is newly input to the shift register 10 from the input terminal 1. As a result, some different word data are formed and stored in the data memory unit 30. The computer unit 40 checks the contents of each word data by a predetermined program, and detects the format corresponding to the type of serial data regarding the word data. Further, the computer section 40 outputs word data in a predetermined format from the output terminal 2 by performing a synchronization process based on the detection result of this format.

FIG. 2 shows a data storage format in the data memory unit 30 provided in the format synchronization processing apparatus. Here, a state is shown in which the first to third word data WD are formed on the data memory unit 30 for the input serial data SD identified by 16 to 1 with respect to the transition of the time t. For example, the third word data is formed by 10 to 3 of the input serial data SD, and the second word data is 9 of the input serial data SD.
.About.2, and the first word data is formed of 8 to 1 of the input serial data SD.

In the format synchronization processing apparatus having such a configuration, the bit shift operation processing, which is indispensable for the information processing by the computer of the conventional apparatus, is performed in each of the preceding stages, so the bit shift operation processing in the computer 40 is deleted. can do. Therefore, this format synchronization processing device can perform synchronization processing using a general-purpose format at a high speed, targeting high speed data.

Although FIG. 1 and FIG. 2 have described the case where word data is handled by 8 bits, the word data here can be handled by 16 bits or other bits, so the present invention is limited to this example. Not done.

[0016]

As described above, according to the format synchronization processing method of the present invention, variously formatted serial data are treated as worded word data of predetermined bits, and the contents of each word data are checked. Since the format corresponding to the type of serial data is detected, it is possible to quickly perform the synchronization process with the general-purpose format even on variously formatted high-speed serial data. Further, in the device adopting this synchronous processing method, it is not necessary to provide a computer unit corresponding to the type of serial data, and the bit shift operation process is performed before the computer unit, and this processing by the computer unit which is conventionally required is performed. As a result, the device can be configured simply and inexpensively, and it is possible to effectively process serial data having a high rate of about 2 to 3 times the information processing capability of the computer unit alone. become. Therefore, for example, if the earth observation data sent from the earth observation satellite is handled by this format synchronization processing device, even if the observation data has a complicated and high-speed rate, which has various formats depending on the satellite, a general-purpose predetermined It will be possible to extract in the format of.

[Brief description of drawings]

FIG. 1 is a block diagram showing a basic configuration of a format synchronization processing device according to an embodiment of the present invention.

FIG. 2 shows a data storage format in a data memory unit provided in the format synchronization processing device shown in FIG.

[Explanation of symbols]

 10 shift register unit 20 write control unit 30 data memory unit 40 computer unit (central processing unit)

Claims (2)

[Claims] 1. The parallel data obtained by parallel-converting variously-formatted serial data input in a predetermined bit unit is converted into word data to form word data, and the word data is temporarily stored and then the word is stored. A format synchronization processing method characterized in that a format corresponding to the type of the serial data is detected by checking the content of the data. 2. A shift register section for parallel-converting variously-formatted input serial data into parallel data in predetermined bit units, a data memory section for temporarily storing word data, and the parallel data. It corresponds to the type of the serial data by checking the contents of the word data stored in the data memory unit and the write control unit that controls to store the data as word data in the data memory unit. A central processing unit that detects a format and outputs the word data in a predetermined format based on the detection result.