HU196859B - Mobil microprocessor-controlled output device of information - Google Patents

Abstract

In the arrangement according to the invention, the microcomputer (!) Is connected via a bus bus (Bl 1) and via a control bus (Bl 2) to a gated bus drive (8) which has a stored lower address input (33) stored at the top (41) of the line drive (4). address output (34) is connected to the column drive (6) via the demultiplexer (7). The output (42) of the row drive (4) and the drive output (62) of the column drive (6) are connected to the row input (51) and column input (52) of the matrix (5) of the two-state elements (preferably light sources). -1-

Description

BACKGROUND OF THE INVENTION The present invention relates to a network comprising a matrix of dual-state elements operated by a microprocessor system, preferably a light information device (LED) constructed with LEDs, which due to its structure is small, portable. Until the advent of modern electronic circuits (microprocessor, memory, etc.), the term "newsprint" was understood to mean only large, robust, high-component and power-consuming equipment.

These highly sophisticated components as well as small biphasic elements, preferably light emitting diodes (LEDs) have already been made possible by compact, mobile and economical information systems, preferably e.g. production of light newspapers.

In the early 1980s, these tools were also introduced in developed industrial countries, significantly expanding the range of advertising and information tools. The known luminaries (known in English as SCROLLING or Moving, known as TEXT DISPLAY) generally have two types of circuitry, respectively. use one of them (eg Byte Magazine April 1984, page 32):

- serial information export with shifter registers - parallel information export with multiplex control.

Another example is disclosed in U.S. Patent No. 4,216,471. U.S. Pat. No. 4,124,197, which describes a circuit kill using parallel I / O Ports for multiplexing the desired text (numerically selectable). (Note that the solution in this patent only allows for static (stationary) text rendering.) A common feature of the above circuitry solutions is that the I / O (input-output) port outputs the location of the information (preferably one column) and content. Therefore, the I / O Port and other components used must have the same (or greater) speed as the microprocessor.

A further disadvantage of serial production is the very high demand for parts and the consequent high consumption, cost and failure.

The present invention uses storage, gateway bus drives instead of I / O Port for ease of use.

Together, these actuator software (preferably stored in machine code) allow the network of two-state elements, preferably LEDs, to exhibit dynamic behavior by cyclically generating (text) information written in a higher level programming language (preferably BÁSIC).

SUMMARY OF THE INVENTION The object is solved by a mobile microprocessor-controlled light information device containing two-state elements, which comprises a microcomputer (preferably ΖΧ-81) and in which a line drive output is input to a line input for a matrix input of a two-state element (preferably LEDs). the column4emultiplexer is connected, and the microcomputer is connected to the gateway bus driver (preferably 8212 or 74373, etc.) stored on the address and control buses. The upper byte output of the address bus is connected via the storage gateway bus to the input of the duplex element matrix column control demultiplexer, and the lower byte output of the address bus is connected to the line drive input of the dual state matrix.

Figure 1 is a flowchart of a higher level (preferably BASIC) program for entering (preferably text) information and operating a matrix (preferably display) control software (preferably stored in machine code form).

Figure 2 is a flowchart of a machine code control program that operates a matrix of dual-state elements (preferably LED dtsplay).

Figure 3 is a block diagram of a light information device consisting of two-state elements (preferably a light source matrix).

Finally, Figures 4a-4c show a list of possible and functional software assemblers when using a Z80 based (preferably ZX 81) microprocessor controller.

The arrangement of the invention and its operation will be explained with reference to Figure 3 below. The address bus output 11 of the microcomputer 1 is connected via the address bus B11 to the address bus input 31 of the storage gateway bus driver 3, while the control bus output 12 of the microcomputer 1 is connected via the control bus B12 to the control bus input 32 of the storage gateway bus driver. The stored lower address byte 33 of the storage gateway bus driver is via the line control bus B33 to the input 41 of the queue drive 4, and the stored upper address byte 34 of the storage gated bus drive is via the B34 column selection bus with demultiplexer input 7. The output 42 of the row drive 4 is connected to the serial input 51 of the matrix of the dual state elements 5, the demultiplexed output 72 of the demultiplexer 7 to the control input 61 of the pillar driver 6 and the output 62 of the oscillator 6 to the column input 52 of the matrix.

The operation of the arrangement according to the invention is shown in Figures 1, 2 and 3 and in Figures 4a-4c. FIGS. The microcomputer 1, which is a custom-built PC (preferably ZX 81 for the prototype made), is dynamically connected to the rest of the layout by the operating software 2 as follows: According to the block diagram of FIG. activating the required character set and then inserting the output (text) information required for operation from a specific location in the memory, starting the operating software 2 stored in the machine code and listed in FIGS. towards a matrix of binary elements.

Operation is understood in accordance with Figure 2 and the Appendix, and Figure 3 illustrates the processing of signals as follows:

The microcomputer 1 processes the (text) information unit retrieved from the memory location designated by the operating software 2 as follows: From an internal register (which identifies the location of the information to be exported), the microcomputer 1 is the upper byte of the virtual byte address; forms the lower byte of the virtual two-byte address from the (text) element of the higher level program language (text) information defined by the above-mentioned internal register. The microcomputer then performs a read operation from the virtual two-byte address. The control bus input 32 of the storage gateway bus driver 3 is preferably configured such that the storage gateway bus driver 3 is not selected during the read operation, such as 1 microcomputer if tne-21 at the virtual two-byte address.

196,859 morris performs a normal read cycle if it has no memory or 1/0 port embedded in memory at this address, it performs an empty 5 read cycle. The essence of the operation is to store data in the battery of the microprocessor of the microcomputer 1 which does not cause further malfunction. The microcomputer then performs a write operation to the above virtual two-byte address, whereby the following occurs:

The microcomputer 1 may have no change in memory at this address (due to history), but the address bus output 11 of the microcomputer 1 and the virtual 2-byte address of the outgoing microcomputer will be combined with the control bus 12 control signals 12 so that The preferably configured enable circuitry of the 3 gateway gateway bus driver selects the 3 gateway gateway bus driver for the duration of the write enable signal, so that the virtual 2-byte address in the address bus output 11 of the microcomputer 1 via the stored in a bus driver. Simultaneously with storage, the stored virtual two-byte address is split into two at the stored lower address-bit output 33 and the stored upper-cimbyte output 34. The signals displayed at the stored upper address bit output 34 of the storage gateway bus driver via the column selection bus B34 to the column selection input 71 via the demultiplexer 7 through the demultiplexed output 72 indicate one of the respective control input terminals 62 of the column driver 6 enables one column of the matrix of the two-state elements 5 through one of the 52 inputs of the matrix of elements 30. At the same time, the stored (text) information byte at the output 33 of the storage gateway bus driver 3 is accessed via the line control bus B33 to the input 41 of the line drive 4, and the output signal 42 of the line drive you can modify accordingly the 8 elements of the column allowed by the column widget 52 of the matrix of the binary elements 5. The properly written operating software 2 and the suitably designed enable circuitry of the storage gateway bus driver 3 ensure that neither the memory nor the 1/0 port area is changed during the information animation. It is also provided (because of the microprocessor's usual timing parameters, the address bus has longer valid data than the data bus, and only the address bus is used to transmit data in the described arrangement), as well as the availability of slower (cheaper) circuits.

Due to the novelty of the arrangement used, but especially with the use of the storage gateway bus driver 3, the matrix elements of the dual-state elements 5 of the present invention may be either dual-state storage elements or transmitting optical elements. The arrangement can be advantageously used e.g. as a whiteboard or as an output peripheral that can be connected to either a personal computer or a microprocessor control unit without affecting a separate memory or I / O port area.

Claims (1)

A patent claim Mobile microprocessor-controlled output information device (preferably light information), comprising a microcomputer and having a binary output of a binary matrix, preferably a light source array, a binary input, a binary output, a binary input, the microcomputer (1) is connected to a storage gateway bus drive (3) through an address bus (B11) and a control bus (Β 12) having a stored lower address byte output (33) to a queue drive (4) input (41) and a stored upper byte output (34) by the demultiplexer (7) is connected to the column selector input (71).