JPS6211822B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention is capable of specifying programs, that is, channels, and turning them on/off in one cycle of a day, a week, or sometimes a month, such as program reservations for television receivers, recording reservations for tape recorders, video tape recorders, etc. Regarding reservation control devices such as television receivers that are configured to automatically perform mode specification control such as recording and playback according to the reservation time, it is possible to display executed programs without using extra memory. The purpose of this invention is to obtain an improved device. For example, if a television (abbreviated as TV) receiver that allows you to reserve viewing of a week's worth of programs is configured to display the contents of the reserved program on the TV screen, if the program is In order to display this, a memory is provided to store the execution of the program, and the read output is used to indicate that the program has been executed. However, rather than re-executing the program reservation contents that have been executed once, it is assumed that a program that has been executed once will not be executed again, and the program will be saved only when it is necessary to execute it again, and in other cases. It is more practical to use the contents of the executed program for displaying the executed program, and it becomes possible to use memory efficiently without substantially increasing the memory capacity. In view of the above-mentioned points, the present invention provides that when the reserved time coincides with the current time and the contents of the program are executed, for example, among the contents of the program memory, the memory corresponding to the time (4 words...1 word is By rewriting all of the segment data for display to zero (when configured with The present invention is characterized in that the time portion of the display is erased, thereby displaying the execution of the program. The details will be explained below with reference to FIG. 1, which shows a circuit diagram of a main part of a TV receiver in a one-week program reservation format. As shown in the dotted line frame in the drawing, the device of the present invention is roughly divided into a keyboard input device 10 for inputting reservation details, a memory selection input circuit 20 for selecting a program memory to be written and inputting information, and
A program memory 30 in which the reservation contents are written counts down the substantially constant periodic output of the power supply frequency, and counts down from 1 to 4 for each piece of information corresponding to the current time (day of the week, hour, minute, etc.).
A time counting memory circuit 40 that stores data in units of words (1 to 4 half-bytes, however, if one byte is 8 bits, the same applies hereinafter), a memory reading circuit 50 that reads out the contents of a designated program memory, and a memory reading circuit 50 that reads out the contents of a designated program memory, a comparison circuit 60 that compares the contents of the time counting memory circuit 40 and determines whether a certain condition (described later) applies or not; a display circuit 70 that displays on the TV screen whether or not the reservation contents and program contents are being executed; The above comparator output causes the time corresponding part of the executed program memory to be stored (F, F, F,
F) an execution memory write circuit 80 for writing 16 pieces of information. In addition, 90 is a TV receiver, 100
indicates the PLL channel selection device. The keyboard input device 10 is used to control the TV receiver's control mode, on-off, selection channel (and in the case of a video tape recorder, recording and playback).
Mode selection buttons such as sequential type (method in which information from Sunday to Saturday is shifted depending on the number of times the button is pressed) or random access type (method in which information from Sunday to Saturday and information from 0 to 9 are shifted) for writing day of the week and time. It is equipped with keys corresponding to numbers, buttons that allow memory input data to be set arbitrarily, and an encoding circuit (converting from decimal to binary to a 4-bit encoded signal). The memory selection circuit 20 selects a program memory into which the output of the keyboard input device 10 is to be input, and selects a predetermined program by using the output of a read memory (or counter) 51 that stores a program memory to be written or read. A selector memory 21 for selecting the address of the memory and a corresponding data selector 22 for selecting the information word to be written.
consists of designated program memory (e.g.
4-bit RAM) as shown in Table 1.

[Table] As mentioned above, the program memory 30 can be a 4-bit RAM, and its capacity can be selected depending on the desired number of reserved contents. In the embodiment, an example is shown in which reservations are made for each day of the week in program memories 1 to 7. Next, the time counting memory circuit 40 will be explained. This circuit includes a time count circuit 4 that calculates the current time by counting down the frequency of an AC power source 41 or the down frequency of a clock pulse oscillator 42.
3 and the output, that is, a day of the week memory 44 and a time memory 4 that independently store the current day of the week and time, respectively.
5, the day of the week is one word, and the time is the upper (0) 10, (1) 10, (2) 10, and lower (0 to 9) in hourly units.
10, Top (0-5) in minutes 10, Bottom (0-9)
Memorize 10 in a total of 4 words. The memory reading circuit 52 reads the contents of one of the program memories, and reads and stores the contents of the memory corresponding to each unit (day of the week, start time, end time, channel number, etc.) as shown in Table 1. It is equipped with a group, its input/output buffer circuit, etc. This memory reading circuit 52 can write to the program memory using either a random writing method or a priority writing method (a method in which programs are always rewritten according to the order of execution and rearranged in priority order). )], the contents of the program memory indicated by the read memory are sequentially cyclically (in the case of the former method) the contents of the program memory with priority 1 (in the case of the latter method). Read and reserve day of the week information to the day of the week comparison circuit 6
1, reserved time information is supplied to the time comparison circuit 62, and the channel number to be selected is supplied to the channel number memory 63 word by word in parallel. The day of the week comparison circuit 61, the time comparison circuit 62, the channel number memory 63, and the determination circuit 64 constitute the comparison circuit 60. First, the day of the week comparison circuit 61 compares the output of the day of the week memory 44 with the memory reading circuit. 52, and if it is confirmed that they match, the next time comparison circuit 62 compares the contents of the reserved day data applied via the time memory 45 and the memory readout circuit 52. Detecting a match between each bit in each word, T: current time and T _S : start time T _E : end time of the contents of the program memory are compared, respectively.

According to the judgment conditions in [Table], when the ON condition is entered, the address of the channel number memory 63 is selected and the programmable counter (not shown) forming the PLL circuit in the channel selection device 100 is activated by the latch output. By controlling the TV receiver 90, the user inputs a desired reserved channel to select the channel and turns on the TV receiver 90. At the same time, the output of the judgment circuit 64 controls the memory writing circuit 80 and inputs the output of the reading memory 52 which specifies the program memory immediately after the execution, and stores the start time and/or end time to be written. Selector memory 2 for selecting addresses
1, addresses 102-105 selected by
The output (F, F, F, F) 16 of the memory write circuit 80 is sequentially written into 10 and/or 106 to 109 and 10. When entering the ON condition, the output of the read memory is fixed. In case of off condition, TV receiver 90
is turned off, and at the same time the contents of the read memory 51 are increased by +1.
Then proceed to the next step. On the other hand, a display circuit 70 that displays input from a keyboard device or reservation contents on a TV screen displays display data in a specified program memory stored in a display memory 71 corresponding to the output of the memory read circuit 52. and the output as
input to a decoder 72 that should be able to convert it into a 7-segment display on the TV screen,

[Table] A decoder that converts into the following relationship, and of the 7-segment characters to be displayed as shown in Figure 2, the parts corresponding to a, g, and d are each 2H in the column direction (however, H is the width of 1 horizontal scanning line). , the whole is 14H, b, c, e in the row direction,
A row counter 73 and a column counter 74 and the outputs of both counters are used as gate control signals, and the output of the decoder 72 is used as an input signal. It is composed of a gate circuit 75, which superimposes reservation contents and the like on the video signal as a 7-segment display signal synchronized with TV scanning, and displays it on the TV screen. Needless to say, the display position can be arbitrarily set by setting the starting end of each counter in the row and column. If configured as described above, the memory readout circuit 5
The contents of the 4 addresses of the reservation start time and/or reservation end time data read through 0 are (F,
F, F, F) 16, the contents of the program memory are assumed to have been executed and are stored in the read memory 51.
By incrementing 1 by 1 and checking the next program memory, a dedicated memory for storing program execution status becomes unnecessary. Also, as shown in Table 3 above, the memory reading circuit 52
Since we have adopted a method of converting the output of Since the number is displayed as it is and the start time and/or end time items disappear, effects such as no special display means can be obtained. In addition, if it is desired to repeat the contents of the program memory 30 after execution the next week or every day, the keyboard input device is provided with a key to that effect, and the determination circuit determines the input based on the input. may be provided, and the output from the determination circuit 64 to the memory write circuit 80 may be turned off (disabled).

[Brief explanation of the drawing]

Figure 1 is a circuit diagram of the main part of the present invention, Figure 2 is a TV
5 is a drawing showing an aspect of segment display on a screen. 30 ...program memory, 50 ...memory reading circuit, 40 ...ticking count memory circuit, 60 ...comparison circuit, 80 ...memory writing circuit, 70 ...display circuit.

Claims (1)

[Claims] 1 (a) A time counter that counts constant output and outputs the current time in display units such as day of the week, hour, minute, etc., and a time memory that stores each display unit as one word. Time counting memory circuit. (b) A keyboard input device that can input the control mode and time of a controlled device such as a television receiver; (c) A plurality of program memory circuits that can store at least reserved times and instruction information for each operation mode; ) A memory reading circuit that reads out the contents of a designated program memory according to the output of the designated reading memory from which one of the circuits described in (c) is to be read or written; (e) according to the output of the reading memory; A memory selection circuit that writes the data output of the device described in (b) above into the selected program memory in the scheduled address order; A comparison circuit that includes a judgment circuit that compares the contents of the corresponding reserved memory and determines the suitability of both conditions; (g) A comparison circuit that converts the output of the circuit described in (d) above into segment display data; (h) A circuit for displaying the contents of the program described in (h) in segments; Executed memory writing configured to write data that is to be decoded into the segment display data in (g) above and to make the display output of the time display segment all zero (no display) only in the time or end time memory section. A reservation control device for a television receiver, etc., comprising a circuit.