JPS5843009Y2 - Data Henkan Souchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a data conversion device that converts a plurality of input data into a video signal to be displayed on a display in a monitor television receiver.

Displaying multiple TV sets at predetermined positions on the display of a monitor television receiver is a useful technology that can be widely applied to, for example, educational equipment, many other equipment, and technical fields. It is.

FIG. 1 is a block diagram of an embodiment of the data conversion device of the present invention applied to educational equipment. Hereinafter, the content of the present invention will be explained with reference to the configuration shown in the first figure. I will explain about it.

In FIG. 1, A1. A2...A are each data generators, which are, for example, answering machines installed for each individual student, and in the illustrated example, each data generator (each answering machine) is a data generator. It is shown as having seven push buttons 1 to 7, each corresponding to a numerical value from 1 to 7 in decimal notation.

Each of the seven push buttons in each answer machine A1 to A is 1
Code converter B1~ that converts decimal numbers to binary coded decimal numbers
For example, when push button 1 on answer machine A1 is pressed, information indicating 1 in decimal is transmitted through the conductor connected to push button 1 on answer machine A1. The code converter B1 sends a 3-bit signal of 001 to the data signal selector C via three output lines.

Further, for example, when push button 4 on answer machine A3 is pressed, information indicating 4 in decimal is given to code converter B3 via a conductor connected to push button 4 on answer machine A3, and the code From converter B3, a 3-bit signal of 100 is sent to data signal selector C via three output conductors.

The code converters B1 to B described above may be constructed using a well-known diode matrix.

The data signal selector C selects each code converter B by a selection signal given from the data selection signal generator G.
A plurality of data signals given from 1 to Bo are converted into time-series data signals synchronized with a horizontal synchronizing signal according to a predetermined order, that is, arranged every horizontal scanning period, and further 1 The time series data signal is repeated for each vertical timing signal and converted into a cyclic time series data signal arranged on the time axis.

That is, the data signal selector C described above operates as a sampler that uses the selection signal provided from the data selection signal generator G as a sampling pulse and sends out a plurality of input data signals as time-division signals.

Note that TV is an input terminal for a horizontal synchronization signal, and TV is an input terminal for a vertical synchronization signal.

The data selection signal generator G described above uses the time position of the trailing edge of the vertical synchronization signal as a reference and the time position of the trailing edge of the horizontal synchronization signal that appears one after another at subsequent times for each one horizontal scanning period ( Since selection signals having a pulse width of 1H period (hereinafter referred to as 1H period) are generated one after another, the selection signals are sent from the data signal selector C to the electronic computer K and the memory device via the output conductor. The transmitted cyclic time series data signal is, for example, a data signal generated from the solver A1 after the first selection signal (the horizontal synchronization signal that first appears after the time position of the trailing edge of the vertical synchronization signal). The data signal sampled by the second selection signal (a selection signal having a pulse width of 1H period from the time position of the edge) and generated, for example, from the solver A2, is sampled by the second selection signal (the trailing edge of the vertical synchronization signal). A selection signal having a pulse width of 1H period is sampled from the time position of the trailing edge of the horizontal synchronization signal that appears second after the time position of The data signal selector C outputs a cyclic time-series data signal sampled by successive selection signals.

In Fig. 2, Fig. 2a to Fig. 2Cn are horizontal synchronization signals (Fig. 2a), vertical synchronization signals (Fig. 2S), selection signals (Fig. 2C1, C2, etc.). This is a waveform diagram showing the mutual time relationships such as those shown in FIG.

The above-mentioned cyclic time-series data signal sent from the data signal selector C to the storage device has, as described above, each constituent input data signal having a time width of 1H period. The individual input data signals in the above-mentioned cyclic time-series data signal are arranged in series on the time axis, but each input data signal is switched by the selection signal used to select it. Signal switch D that performs the operation
5, the signal switch D5 performs the switching operation.
A plurality of storage portions D1 to D in which each input data signal can be stored separately for each input data signal.
The horizontal synchronizing signal is written and stored in a predetermined storage part of the answerer A1 (for example, the data signal generated by the answerer A1 is written to the storage part D1, and the data signal generated by the answerer A2 is - data signal is stored in storage portion D2, etc.).

In this explanatory example, it is assumed that each individual category signal is a 3-bit signal, so each storage portion D1 to Do is composed of three storage elements d1 . d2. d
It is shown as consisting of 3.

As described above, the specific input signal that is sampled by each selection signal is written to a specific storage portion during the period of the horizontal synchronization signal included in the period of each selection signal. By doing so, the input cater signals of each field stored in the memory section of each field are all stored as being in a good signal state without any defects.

The input data signals of each field written individually in each of the storage parts D1 to Dn of the storage device are input in a predetermined order by a read signal having a predetermined repetition period generated by a read signal generator J. The signal is read out and sent to the video signal generator E.

As for the above-mentioned reading mode, for example, during a period excluding the horizontal synchronizing signal period in the 1H period, all the storage contents from the storage part D1 to the storage part Dn in the storage device are read out, and the contents on the screen are read out. All the input categories can be lined up horizontally, or, for example, during the 1H period excluding the horizontal synchronization signal period, the contents of half of the storage sections in the storage device can be read out and displayed in the upper part of the display. The first half of the input category is aligned horizontally in the lower part of the display, and the second half of the input category is aligned horizontally in the lower part of the display. It can be set arbitrarily by changing the signal form of the readout signal sent from the readout signal generator J depending on the arrangement and display mode of the display.

In the video signal generator E, the output signal of the memory device given from the memory device is converted into a video signal corresponding to, for example, a number to be displayed on the screen by a character generator, and a synthesized synchronization signal is added to it. It is additionally supplied to a monitor television receiver F to display the data arranged as required on its screen.

As is clear from the above explanation, in the data converter of the present invention, a plurality of input data signals are sampled using a selection signal synchronized with a vertical synchronization signal and a horizontal synchronization signal. Convert to time series data signal,
Furthermore, when writing each data signal of the cyclic time-series data signal to or reading from the storage device, the writing of the signal is performed during the horizontal synchronization signal period included in the selection signal period; Since signal reading is performed during one horizontal scanning period excluding the horizontal synchronizing signal period, there is no loss of signals written in the memory, and according to the device of the present invention, multiple Since the input data signals are converted into cyclic time-series data signals and written to and read from the storage part of the memory device, the number of transmission lines for signal transmission is extremely small, and multiple transmission lines can be easily connected. It is possible to convert the input data signal into a video signal and display it on the screen.

Therefore, a large number of TV sets can be monitored using one monitor television receiver.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an applied example of the data converter of the present invention, and FIGS. 2a-Cn are explanatory waveform diagrams. A1-A,... Data generator, B1-B2...
... Code converter, C ... Data signal selector, D ... Memory device, D1 to D, ...
Memory portion, d1 to d3... Memory element, E...
...Video signal generator, F...Monitor television receiver, G...Data selection signal generator,
J: Read signal generator, Tn: Horizontal synchronizing signal input terminal, TV: Vertical synchronizing signal input terminal.

Claims (1)

[Scope of utility model registration request] A plurality of input data signals are synchronized with a horizontal synchronization signal and converted into time-series data signals according to a predetermined order, and the time-series data signals are synchronized with a vertical synchronization signal and repeated over time. means for converting the data into a cyclic time series data signal arranged on an axis; and a storage section provided individually for each input data signal in the cyclic time series data signal. means for writing the person category signal into a memory during the horizontal synchronization signal period included in the period of the selected selection signal; means for reading out another input data signal in a predetermined order during the remaining period of the horizontal scanning period excluding the horizontal synchronizing signal period; and converting the signal read from the storage device into a required video signal; and means for adding a composite synchronization signal to the video signal.