JPS5915571B2 - Program reservation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for use in a broadcast receiving device such as a television receiver, in which a reservation (program) is made to select a predetermined channel at a predetermined time. - It is an object to provide a device that improves the operability of changing each mode of time adjustment and improves the accuracy of operation.

Recently, in television receivers, etc., the channel of the program to be viewed at a certain time every day or the same day of the week every week is written in advance and programmed in the storage device (memory), Nowadays, devices have been developed that read channel signals from memory and automatically switch channels.

Such a device is very convenient in that it prevents the user from missing programs that are regularly viewed and saves the trouble of switching channels each time. SUMMARY OF THE INVENTION An object of the present invention is to provide a device that can easily and accurately switch between the three basic operating modes of such a program reservation device.

EMBODIMENT OF THE INVENTION Hereinafter, the present invention will be described in detail with reference to the drawings showing one embodiment thereof.

FIG. 1 shows its overall configuration, where 1 is a television receiver (hereinafter simply referred to as television), and the remaining parts are a program reservation circuit.

The television 1 includes a tuner 2, a channel selection circuit 3 for controlling the reception channel, a channel switching switch group 4 for switching the reception channel, a channel display circuit 5, a VIF circuit 6, a detection circuit T) a video circuit 8, and a cathode ray tube 9. , a power supply circuit 10, and the like. The program reservation circuit portion includes a memory 11 having 12 types of addresses for storing 12 types of program reservation information.
, a write address switching circuit 12 that switches which of the 12 addresses A to L to write reservation information at the time of program setting, a switch 13 that sequentially changes the write address, and a switch 13 that changes the write address sequentially. An encoder 14 and a switch 15 for inputting channel information and reception stop information, and a writing day-of-week setting circuit 1 for inputting day-of-the-week information manually.
6 and a write time setting circuit 17 for inputting time information as a write means.

There is also a read switching circuit 18 that sequentially reads reservation information stored in each memory address while switching read memory addresses A-L from the memory 11 at high speed, and a switching pulse that generates a high-speed switching pulse for switching. A generation circuit 19, an information separation circuit 20 that separates and distributes read reservation information for each piece of information, an actual day of the week generation circuit 21 that generates a signal indicating the day of the week that is currently in progress, and a signal that indicates the time that is currently in progress. The real time generating circuit 22 that generates the real time information compares the day of the week information and time information of the reservation information read from the memory 11 with the actual day of the week signal and the real time signal, and when the two match, that is, the reserved designated time a comparison circuit 23 that outputs a match signal when the match signal arrives and is full; a latch circuit 24 that latches the reservation information of the memory address read from the memory 11 when the match signal is generated; and the latched reservation information. The reading means includes an identification circuit 25 that identifies the contents of the information and generates a channel switching signal and a power-off 3 signal. Furthermore, a channel switching circuit 26 for controlling the channel selection circuit 3 of the television 1 to switch the selected channel to a reserved channel according to the manual channel switching signal from the identification circuit 25; A power cutoff circuit 27 disconnects the power supply circuit 10 of the television 1 according to the signal to stop the image receiving operation, and a power supply circuit 10 of the television 1 even though the channel switching signal is identified and generated.
The control means includes an alarm generating circuit 28 which detects when the television 1 is in a non-operating state due to disconnection of the TV 1 and generates an alarm generating signal to generate an alarm sound. 29 is a day of the week display device, 30 is a time display device, 31 is a switch for setting the day of the week to be reserved or modifying the actual day of the week signal, and 32h and 32m are for setting the time to be reserved or modifying the actual time signal. This is an hourly and minute switch.

Further, 33 to 38 indicate the operation of each circuit in reservation setting mode a, reservation execution mode B. ．． and an interlocking switch for switching to time correction mode c; 39 is a mode switching circuit for switching these switches; 40 and 41 are a mode switching switch and a door switch for instructing the mode switching.

Although these switches 33 to 38 are shown by abbreviations in FIG. 1, they are actually constructed by a combination of AND gates and OR gates, etc., as shown in detail in FIG. 2. The mode changeover switch 40 is configured so that the above three modes can be freely changed over.
The door switch 41 has three contacts b and c, and the door switch 41 has a contact A that enables the mode switching switch 40, and a contact B that disables the mode switching switch 40 and forcibly switches to reservation execution mode b. are doing. As shown in FIG. 3, the mode changeover switch 40 and the door switch 41 are located inside a storage chamber 43 formed in a part of the front surface of the housing 42 of the television 1. A door 44 for opening and closing the front side of the switch is provided so that each switch 13, 15, 32h, 32m can be operated only when the door 44 is open.

The door switch 41 is provided so that its knob is pushed by the door paulownia and switched as the door opens and closes, and when the door 44 is open, the contact A side is on, and when the door 44 is closed, the contact is on the A side. Make sure that the contact is on the B side. next,
The operation in such a configuration will be explained.

First, if you want to set up and write a reservation program, please use door 4.
Open 4.

Then, the door switch 41 is switched to the contact A side and the mode changeover switch 40 becomes effective, so that it is changed to the reservation setting mode a. As a result, each of the switches 33 to 38 is switched to contact a via the mode switching circuit 39, and the operating state becomes the reservation setting mode. Therefore, first switch 3
3 switches to the contact a side, and a write control signal to the memory 11 can be applied.

Therefore, by operating the switch 13, the write address switching circuit 12
Switch the switch circuit and specify the address to be written. This write address switching circuit 12 includes a switch 13
It is preferable to use a device such as a ring counter which is switched each time the A to L output terminals are operated and sequentially generates a write control voltage at each output terminal of A to L. Which address is designated to be in the write state is indicated by the light emitting diodes 45A to 45L, etc., which are lit by the output of the control voltage. When a write address is designated in this manner, only the designated memory address among memory addresses AL in the memory 11 becomes writable. In the case of the figure, memory address B is in a writable state. Therefore, the user operates the switch 31 for setting the writing day of the week and sets the day of the week to be reserved in the writing day of the week setting circuit 16 via the switch 34.

This can be done by selecting and making a reservation for any one day of the week from Sunday to Saturday, or by making a reservation for all days of the week (that is, every day). Then, the write time setting switches 32h and 32m are operated to set the reserved time in the write time setting circuit 17 via the switch 35. The set reserved day of the week information and reserved time information are written to memory address B designated for writing. When writing at the same time, switch 3
Since contacts 6 and 37 are also switched to the a side, the set reserved day of the week and reserved time are displayed on the day of the week display device 29 and the time display device 30. Furthermore, the user operates the channel selection switch 4 for the channel selection circuit 3 of the television 1 to set the channel to be reserved, or operates the stop setting switch 15 to set that the image reception operation should be stopped.

The set reserved channel information or image reception stop information is converted into a predetermined signal by the encoder 14, and then written to memory address B, which is also designated for writing. At this time, in this device, the reserved channel is set using the channel changeover switch 4 for the channel selection circuit 3 of the television 1, so that the channel selection circuit 3 is also controlled at the same time as the reserved channel is set. The channel selection on TV 1 is switched to that channel all at once,
Which channel has been reserved is determined by the screen of the television 1 and the channel display circuit 5. Further, when the switch 15 for setting the stop of the image reception operation is operated, a blanking voltage is applied to the video circuit 8, the screen is erased, and it is displayed that the stop of the image reception has been reserved.

In this way, once the writing of the reservation information such as the day of the week information, time information, and channel stop information to one memory address B in the memory 11 is completed, the switch 13 is further operated to change the write designated address in the memory 11. At the same time, reservation information is written to each memory address using the same operating means.

In the illustrated embodiment, 12 addresses A to L are provided in memory month 1, so that up to 12 types of reservation information can be written in total. In addition, when setting this reservation, the switch 38 is also connected to contact a.
Since the identification circuit 25 does not generate an output because the switching is made to the side, no control operation is performed based on the readout information from the memory 11.

After writing the necessary amount of reservation information in this way, the mode changeover switch 40 is switched to the contact b side.

Then, the switches 33 to 3 are switched via the mode switching circuit 39.
8 is switched to contact b, and the operating state is switched to reservation execution mode b. At this time, first, the switch 33 is switched to contact b, thereby making writing to the memory 11 impossible, and the memory 11 enters a state in which it holds the reservation information. Further, the switches 36 and 37 are also switched to contact b, and the day of the week display device 29 and the time display device 30 display the actual day of the week and the actual time, respectively. In this reserved execution mode b,
The television 1 is controlled based on the reservation information written and stored in the memory 11.

At this time, first, the readout switching circuit 18, which is switched by a high-speed switching pulse from the switching pulse generation circuit 19, sequentially reads out the reservation information stored in each memory address AL of the memory 11. Such a read switching circuit 18
This includes a ring counter that sequentially generates outputs to 12 output terminals each time a switching pulse from the switching pulse generation circuit 19 is applied, and a readout signal from memory addresses A to L is sequentially taken out by the output of the ring counter. It may be configured by, for example, a gate. In addition, it is desirable that the reading cycle be as short as possible, at least to the extent that memory addresses A to L can be read once within several seconds, but
1 or the operating frequency limit of each circuit. The reservation information read out one after another from memory addresses A-L in this way is separated into day of the week information and time information and channel stop information by an information separation circuit 20, and the day of the week report and time information are sent to a comparison circuit 23. In addition, channel stop information is added to the latch circuit 24. On the other hand, the real time generating circuit 22 generates a real time signal indicating the currently progressing moment by moment by dividing the commercial power supply frequency or the reference oscillation frequency, and the real time generating circuit 21 generates a real time signal indicating the current advancing time. By counting the signals generated every 24 hours, an actual day-of-the-week signal indicating the day of the week currently in progress is generated. Then, the comparison circuit 23 compares the reserved day of the week information and reserved time information separated by the read information separation circuit 20 from each memory address A-L of the memo January 1 with the actual day of the week signal and the actual time signal, and the two match. In other words, when there is reservation information that specifies the current day of the week and time and the current day of the week and time has arrived, the comparator circuit 23 generates a matching output and channels the reservation information. The stop information is latched in the latch circuit 24. Of course, when the reserved day of the week report is for all days of the week (that is, every day), a matching output is generated and latched at the reserved time of all days of the week. Then, the reserved channel/stop information read from the memory 11 and latched in the latch circuit 24 is identified by the identification circuit 25, and if the reserved information specifies channel switching, the channel switching circuit 26 is activated. The channel selection circuit 3 of the television 1 is switched and controlled to receive the designated channel. However, if the power supply circuit 10 is disconnected at this designated time, the alarm generation circuit 28 detects this and generates an alarm sound for a predetermined period of time, for example, several seconds or minutes from the designated time.
Notify the viewer that the designated time has arrived. If the viewer is alerted by the alarm sound, or returns home after the specified time, the alarm is activated for a predetermined period of time from the specified time, for example 3.
If the power supply circuit 10 is turned on within 0 minutes or 1 hour, the reserved channel 3 is selected. On the other hand, if the reservation information identified by the identification circuit 25 specifies the stop of the image receiving operation, the power supply switching circuit 27 switches the power supply circuit 1
0 to control the television 1 to turn off.

These operations of reading the reservation information from the memory 11, comparing it with the actual day of the week and real time, latching the reservation information, identifying it, and switching channels or cutting off the power based on the identification output are repeated, and the memory 11 Automatic control is executed according to a reservation program written in advance.

Next, when executing the above reservation program,
For accurate execution, the actual day of the week signal and real time signal generated by the actual day of the week generation circuit 21 and the actual time generation circuit 22 must be correct.

Therefore, if it is incorrect, it is necessary to correct it. In that case, first switch the mode changeover switch 40 to the contact c side. Then, the switches 33 to 38 are switched to contact c via the mode switching circuit 39, and the operating state is switched to time correction mode c. At this time, the switches 34 and 35 are first switched to contact c, so that by operating the switch 31, the actual day of the week signal in the actual day of the week generation circuit 21 can be corrected via the switch 34, and the switches 32h and 32m are By operating the switch 35, the hour signal and minute signal of the real time signal in the real time generating circuit 22 can be corrected. At this time, the switches 36 and 37 are also switched to the contact c side, and the actual day of the week signal and actual time signal are displayed on the day of the week display device 29 and the time display device 30. All you have to do is adjust the day of the week and time. During this time adjustment, the actual day of the week signal and real time signal are changed one after another for correction regardless of the actual day of the week and time, so the signal in the process of changing may cause erroneous channel switching or power disconnection. There is a risk that control may be taken.

Therefore, in the operating state of the time correction mode c, the switch 38 is controlled so that the identification circuit 25 does not generate an output, thereby preventing execution of the reservation program. When the correction of the actual day of the week signal and the actual time signal is completed in this manner, by returning the mode changeover switch 40 to the contact b side, control according to the reservation pattern is executed as described above.

As described above, operations are performed in three modes: reservation setting mode a, reservation execution mode b, and time adjustment mode c.

However, in such a device, the mode changeover switch 40 and various input and setting switches 13, 15, 3
1, 32h, 32m, etc. are provided in the storage chamber 43 and are closed by the door 44, but as is clear from the above, the mode changeover switch 40 is set to the contact point b of the reservation execution mode b. If the mode remains switched to the reservation setting mode a or the time adjustment mode c without being returned, the reservation program will no longer be executed.

Therefore, in this device, such inconvenience can be avoided by switching the door switch 41.
This problem has been resolved by providing .

That is, as shown in FIG. 2, the contacts A and B of the door switch 41
Contact A on the side that is switched when the door is opened is connected to the mode changeover switch 40, and contact B on the side that is switched when the door is closed is connected to the output terminal for controlling reservation execution mode B without going through the mode changeover switch 40. are doing. In this way, when the door 44 is open, the mode changeover switch 40 can be activated to switch between the three operation modes as described above. On the other hand, when the door 44 is closed, the mode changeover switch 40 can be disabled, and the operation mode can be forcibly changed to reservation execution mode b, so that the reservation program can be executed regardless of the switching state. It is. Therefore, even if the viewer forgets to switch the mode changeover switch 40 after opening the door 44 and setting the reservation program or adjusting the time, the reservation program will be automatically executed as long as the door 44 is closed. This makes it a convenient device that eliminates the risk of missing out on a pressing reservation program. In the above description, the addresses at which the reservation information is written to and read from the memory 11 are switched using the switching circuits 12 and 18, respectively, but of course, the memory 11 may be switched by any other means. Needless to say, the reservation information may be stored in the computer, and furthermore, a microcomputer may be used to generate and store the reservation information and perform signal processing.

As detailed above, according to the present invention, in a device that is used in a broadcast receiving device such as a television and makes a reservation to select a predetermined channel at a predetermined time, the reservation setting mode a1 the reservation execution mode b and time adjustment mode c 3
A mode changeover switch for switching between two operation modes is provided in the storage chamber, and a door switch is provided that forcibly switches to the reservation execution mode when the door that opens and closes the storage room is closed, regardless of whether the mode changeover switch is switched. Even if the user forgets to switch the mode changeover switch to the reservation execution mode, the reservation program will always be executed as long as the storage room door is closed, and the reservation program will not fail to execute. What results is a convenient device that can operate with unparalleled accuracy.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a program reservation device according to an embodiment of the present invention, FIG. 2 is a circuit diagram of its main parts, and FIG. 3 is a perspective view of its main parts. 1...Television receiver (TV), 2...
...Tuner, 3...Tuning selection circuit, 4...
... Channel selection switch, 10 ... Power supply circuit, 11 ... Memory, 12 ... Write address switching circuit, 14 ... Encoder, 16.・
...Writing day of the week setting circuit, 17...Writing time setting circuit, 18...Reading address switching circuit, 20.
... Information separation circuit, 21 ... Real day of the week generation circuit, 22 ... Real time generation circuit, 23 ...
... Comparison circuit, 24 ... Latch circuit, 25 ...
...Identification circuit, 26...Channel switching circuit, 27...Power cutoff circuit, 28...
Alarm generation circuit, 29... Day of the week display device, 3
0...Time display device, 31, 32h, 32m・
...Switch, 33, 34, 35, 36, 37,
38... Linked switch, 39...
Mode switching circuit, 40...Mode switching switch, 41...Door switch, 42...Casing, 43...Storage room, 44... ··door.

Claims (1)

[Claims] 1 Equipped with a memory with multiple addresses, each address of this memory has a
Information specifying the channel to be selected by the broadcast receiving device and information specifying the time at which the channel should be selected are written and stored in advance, and reservation information is stored at the address at each time. Accordingly, in the program reservation device controlling the channel selection circuit of the broadcast receiving device to switch the selected channel, a reservation setting mode for writing reservation information of the channel and time in the memory;
A reservation execution mode in which reservation information is read from the memory and identified to control the broadcast receiving apparatus; and a correction mode in which the time of a real time generation circuit that generates a real time signal for use in the reservation execution mode is manually corrected. A mode switching circuit for controlling the mode switching circuit is provided, and a mode switching switch for controlling the mode switching circuit is provided in a storage chamber formed in the housing, and is switched by opening and closing a door that opens and closes this storage chamber. 2. A program reservation device characterized in that a door switch is provided for switching the mode switching circuit to the execution mode regardless of the switching state of the mode switching switch.