JPH0710419Y2 - Data processing device - Google Patents

Description

TECHNICAL FIELD The present invention relates to an apparatus for processing a digital data signal, and more particularly, to a data processing apparatus that can be suitably implemented when processing a digitized acoustic signal, for example. Regarding

BACKGROUND ART In order to eliminate signal deterioration when transmitting an acoustic signal,
A method of converting an acoustic signal into a digital signal and transferring the data as digital data has been implemented. In such a system, the acoustic signal is converted into fixed point type data by an analog / digital converter. This fixed point type data is converted into floating point type data by the data processing device, and this floating point type data is transferred to another data processing device. In the data processing device on the side of receiving the floating point type data, the floating point type data is converted into fixed point type data and converted into an analog signal by the digital / analog converter.

The data processing device used for such data transfer is
An exponent part register and a mantissa part register for respectively storing an exponent part and a mantissa part of floating-point data are provided.

Problems to be Solved by the Invention In the above conventional technology, for example, in a data processing device that inputs fixed-point data, converts the data to floating-point data, and outputs the data, the fixed-point data is stored in the mantissa register of the floating-point data. Stored. Therefore, the exponent register and the input terminal of the exponent of floating-point type data were not used and were wasted.

An object of the present invention is to provide a data processing device which solves the above-mentioned problems, reduces the cost of the configuration, realizes the cost reduction and the more advanced data processing.

Means for Solving the Problems The present invention provides an exponent part register for storing exponent part of floating-point data or separate data, and fixed-point data or the floating-point type data having the same format as the fixed-point data. A data processing device comprising a mantissa register for storing a mantissa part of data, wherein the contents of the exponent register and the contents of the mantissa register are individually input from an external device. The fixed-point type data is stored in the mantissa register, and the exponent register can be input with the separate data for storage.

The data processing device according to the present invention is provided with the mantissa register for storing the mantissa part of the floating point type data and the exponent part register for storing the exponent part, respectively. can do. Therefore, for example, when inputting fixed-point type data having the same format as the mantissa part of floating-point type data, the input fixed-point type data is stored in the mantissa part register and stored in the exponent part register. You can enter and store separate data.

Embodiment 1 FIG. 1 is a block diagram showing the configuration near a data processing device DSP4 according to an embodiment of the present invention. The data processing device DSP4 is
Data including a mantissa part reception register A10 and a mantissa part transmission register A11 that are mantissa registers, an exponent part reception register B10 and an exponent part transmission register B11 that are exponent parts registers, and data having the same configuration. Processor DS
Transfers data to and from P5.

An analog signal such as an acoustic signal is input to the analog / digital converter AD2 from the line 11 and converted into a digital signal. This digital signal is usually fixed-point type data, and has a data length of 16 bits, for example.
This fixed point type data is the analog / digital converter AD
It is output from the transmission register A9 of 2 to the mantissa reception register A10 of the data processing device DSP4.

The exponent receiving register B10 of the data processing device DSP4 has a potentiometer 1 for detecting, for example, fluctuations in external voltage.
The signal from is converted into a low-bit digital signal of, for example, 3 bits by the analog / digital converter AD1 and input. The data of the mantissa part reception register A10 and the exponent part reception register B10 are transferred to the internal bus D1 via the mantissa part register C1a and the exponent part register C1b of the internal register C1.
Given to.

In the data processing device DSP4, the data from the mantissa register C1a is subjected to arithmetic processing in accordance with the data from the exponent part register C1b to obtain floating-point type data as the arithmetic result. The mantissa part and exponent part of the floating point data are output to the mantissa part transmission register A11 and the exponent part transmission register B11 via the mantissa part register C1a and the exponent part register C1b of the internal register C1.

The data in the mantissa transmission register A11 and the exponent transmission register B11 of the data processing device DSP4 are line 15 and line 1.
Mantissa reception register A12 of the data processor DSP5 via 6
And the exponent part reception register B12, respectively, and the floating point type data is thus transferred between the data processing devices DSP4 and DSP5.

In the data processing device DSP5, the floating-point type data of the mantissa part reception register A12 and the exponent part reception register B12 are given to the internal bus D2 via the mantissa part register C2a and the exponent part register C2b of the internal register C2 to be subjected to arithmetic processing. Is given. When the result of this operation is, for example, fixed-point type data, the fixed-point data from the internal bus D2 is given to the mantissa transmission register A13 via the mantissa register C2a of the internal register C2. The output from the mantissa transmission register A13 is given to the digital / analog converter or the like via the line 12.

At this time, when the calculation result obtained by performing another calculation from the floating point type data of the mantissa part reception register A12 and the exponent part reception register B12 is input to the exponent part transmission register B13, the exponent part transmission register B13 outputs the line 13 A signal may be output via the.

In this embodiment, the potentiometer 1 is used for analog /
Since the data processing device DSP4 is configured to perform arithmetic processing according to the data input to the exponent reception register B12 via the digital converter AD1, the configuration shown in FIG. It can be applied to such linear control and open loop adaptive control.

FIG. 2 is a diagram for explaining the operation when the electronic volume function is added to the data processing device DSP4. The fixed point type data representing the acoustic signal is derived from the analog / digital converter AD2 on the line 14, and the signal from the potentiometer 1 is derived on the line 10 after being converted to a digital signal by the analog / digital converter AD1. To be done.

In the data processing device DSP4, as shown in FIG. 2, the data from the line 14 is digitally amplified with an amplification factor according to the data from the line 10 and output.
In this way, the potentiometer 1 can control the acoustic signal to a desired volume.

FIG. 3 is a block diagram showing another embodiment of the present invention, in which parts corresponding to those of the above-mentioned embodiment are designated by the same reference numerals.

In this embodiment, the signal input to the exponent reception register B10 of the data processing device DSP4 is a control command of the data processing device DSP4. The signal representing the control command of the data processing device DSP4 is input to the flag generation circuit 2, and the flag representing the control command is input from the flag generation circuit 2 to the exponent part reception register B10 via the line 10.

The exponent part of the floating point type data is generally low bit, but has a sufficient data length as a flag of a command for controlling the data processing device DSP4 from the outside, and for example, the operation program of the data processing device DSP4 is forced. It can be used when switching.

In this way, when the data processing device DSP4 inputs fixed point type data such as an analog / digital converter, the input terminal of the exponent part of the floating point type data and the exponent part receiving register B10 are wasted. Instead, use it effectively to input fluctuations in external power supply and control commands. Therefore, the data processing device can perform more advanced data processing, and the application range of the data processing device is expanded.

In the present embodiment, as the input / output port of the data processing device DSP4, the data processing device usually has a mantissa part or fixed-point type data of floating-point type data and an exponent part of the floating-point type data. Available serial port and general-purpose parallel port can be used respectively.

Effects As described above, according to the present invention, when fixed point type data having the same format as the mantissa part of floating point type data is input to the data processing device, the fixed point type data is converted into the mantissa. Stored in the department register,
Separate data may be input and stored in the exponent register.

Therefore, waste of the configuration of the data processing device can be omitted, and more advanced data processing can be performed by making full use of the functions of the data processing device.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration around a data processing device DSP4 which is an embodiment of the present invention, and FIG. 2 is a data processing device DS.
FIG. 3 is a block diagram for explaining the operation when the electronic volume function is added to P4, and FIG. 3 is a block diagram showing another embodiment of the present invention. DSP4, DSP5 ... Data processing device, A10, A12 ... Mantissa part reception register, A11, A13 ... Mantissa part transmission register, B10, B12 ... Exponent part reception register, B11, B13 ... Exponent part transmission register, AD1, AD2
… Analog / digital converter, 1… Potentiometer,
2 ... Flag generation circuit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shoji Fujimoto 1-2-2 Gosho-dori, Hyogo-ku, Kobe, Hyogo Prefecture Fujitsu Ten Ltd. (72) Inventor Katsumaro Yasui 1-chome, Gosho-dori, Hyogo-ku, Hyogo Prefecture No. 2-28 in Fujitsu Ten Limited (56) Reference JP 59-180732 (JP, A) JP 63-282799 (JP, A)

Claims (1)

[Scope of utility model registration request] 1. An exponent part register for storing an exponent part of floating-point data or separate data, and fixed-point data or a mantissa part of the floating-point data having the same format as the fixed-point data. A data processing device comprising a mantissa register, wherein the contents of the exponent register and the contents of the mantissa register are individually input from an external device. A data processing device, wherein the data is stored in a partial register, and the exponent register can input and store the separate data.