JPS6172383A - Frare display - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a fare display device for displaying fares for buses, taxis, and other vehicles.

[Prior art 1] Generally, for example, when bus fares are revised, various Iv;Ui+ are made several days before the scheduled revision date, but the fare display must not be changed while the current fare is in effect. Conventionally, the fare display was changed after the last bus service was completed on the day before the scheduled revision date and the buses returned to their respective offices.

[Problems to be solved by the invention] However, with this type of conventional system, work personnel must be assigned to each business office after the final lotus operation (usually at night), which requires HME maintenance. is in trouble,
In addition, there were other problems such as the work itself being too burdensome.

It is an object of the present invention to solve the problems of the conventional devices described above and to provide a fare display device that can automatically change the iIF fare display when the scheduled fare revision date and time has arrived.

[Means for Solving the Problems] In order to achieve the above object, the present invention includes a first memory that stores current fare data, a second memory that stores revised fare data, and the back side of both memories. means for reading and displaying fare data from a designated memory; means for setting a scheduled date and time of fare revision; timekeeping means; and said successive display means when a time value measured by said timekeeping means matches a set value by said setting means. and means for switching the memory to be read from the first memory to the second memory.

[Function] By employing the above means, the present invention automatically switches the displayed fare data from the previous fare data to the revised fare data when the scheduled fare revision date and time arrives.

[Example] Embodiments of the invention shown in the drawings will be described below.

The figure shows an embodiment of the present invention, in which 1 is a ROM that stores current fare data, 2 is a ROM that stores revised fare data, and 3 is a ROM that can be programmed with a gain of .DELTA. A data select circuit 4 reads out the fare data from ROM 1 or 2, and 4 updates the fare data read by the data select circuit 3 through a switch operation (not shown) or a display update recorded on a route guidance tape. 7 is a display control circuit that sequentially updates the fare for each bus stop and displays it on the display 6, and 7 indicates the scheduled date and time of fare revision, corresponding to one year, month, day, hour, and minute, respectively. A setting device 8, 8, . A time counter that is backed up and correctly sets the year, month, day, hour, and minute by the correction switch 12 and measures time based on the oscillation frequency of the oscillator 13; 7
By comparing the set value of both jI'? This is a coincidence detection circuit consisting of an EX-OR circuit that generates a coincidence signal that inverts the flip-flop 15 when all of Also, when the switch 17 is turned on, ROM2 is specified to the data select circuit 3,
Furthermore, when it is inverted by a match signal from the negative number output circuit 14, the designation of the ROM is switched.

In the above fare display device, when first testing the fare data in ROM 2 to confirm it, turn on the switch 17 and input the display update signal 5 to the display control circuit 4, and then the revised fare data will be displayed. It can be displayed on the device 6 for confirmation. When the confirmation is completed, the switch 16 is turned on to return the designation for the data select circuit 3 to the ROM 1, set the scheduled fare revision date and time in the setter 7, and set the time counter 10 correctly. The above work can be easily done many days before the scheduled fare revision date and during normal working hours.

If you complete the preparations in this way, the current fare data in ROM1 will be displayed until the scheduled fare revision date and time.
Also, when the scheduled fare revision date and time is reached, the ROM1 is automatically switched to the ROM2, and from then on, the revised fare data will be displayed.

[Effects of the Invention] Since the present invention is depicted as described above, when the scheduled fare revision date and time is reached, the displayed fare data can be automatically switched from the previous fare data to the revised fare data, In addition, the t% preparation work for this purpose can be easily carried out several days before the scheduled fare revision date, but during normal working hours, and therefore, compared to the conventional method, it is easier to secure (4) and the work itself is reduced. It has 11 excellent effects such as:

[Brief explanation of the drawing]

The figure is a block diagram showing one embodiment of the present invention.

Claims (1)

[Claims] 1. A first memory that stores current fare data, a second memory that stores revised fare data, means for reading and displaying fare data from a designated memory among the two memories, and a scheduled date and time of fare revision. a timer; and a means for switching the memory read by the reading display means from the first memory to the second memory when the time value measured by the timer coincides with the set value by the setting means. A fare display device characterized by: