JPS63298736A - Reservation timer device for recording and reproducing equipment - Google Patents

Abstract

PURPOSE:To prevent the mistake of reservation recording even without providing a circuit for a reserve switch or a mode designation inhibition by adopting a constitution so that a warning is issued at a prescribed time before the start time of recording reservation. CONSTITUTION:An information signal 2min before a recording start time and a recording end time set to a channel program circuit 1c (a signal subtracting 2min) is set to a minus 2min setting circuit 1g composed of a RAM. The set content of the circuit 1g and the present time from a clock circuit 1a are compared by a digital comparator 1f and the coincidence is detected. The digital comparator 1f detects the coincidence of both and outputs a coincidence detection signal, then the warning is issued from a warning generation instruction circuit 17. Thus, the notice of approaching the record start time is urged to the user without providing a reserve switch or mode designation inhibition circuit to prevent the failure of the reservation recording.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a reservation timer device for recording and reproducing equipment, and particularly for recording media such as magnetic recording and reproducing equipment (VTR) and audio tape decks. The present invention relates to a reservation timer device for reservation recording used in recording and reproducing equipment that records and reproduces video signals and/or audio signals.

[Prior Art] FIG. 2 is a block diagram showing an example of a reservation timer device employed in a conventional VTR. In the figure, a clock circuit (or calendar circuit) 1a measures the current time, and its output is given to one input terminal of a digital comparator 1b.

The channel program circuit 1C stores the recording start time, recording end time, recording reception channel, etc. for reserved recording, and its output is sent to the digital comparator 1.
It is applied to the other input terminal of b.

Note that the settings of the storage contents of the channel program circuit 1C are performed by the user operating the setting key 1d. The output of the digital comparator 1b is given to a memory circuit 1e that stores the reserved recording mode. This memory circuit 1e is constituted by, for example, a flip 70 tube.

The output of the memory circuit 1e is applied to a first input terminal of a three-way AND gate 4. Between the second input terminal of this AND gate 4 and the power supply, and between the third input terminal and the power supply,
A cassette switch 2 and a reserve switch 3 are respectively inserted. The cassette switch 2 is used to detect whether or not a cassette tape is installed, and is normally open (open).
(off), and is closed (on) when a cassette tape is loaded. Further, the reserve switch 3 is a switch that is turned on by the user when performing reserved recording. A
The output of the ND gate 4 is sent to the channel receiving circuit 5. Signal recording circuit6. It is applied to a video signal output circuit 7 and a mixing circuit 8. The channel receiving circuit 5 is for receiving the broadcast signal of the selected channel, and its output is given to the rotating magnetic head 9 via the signal recording circuit 6. The analog switch 10 switches the signal path in the recording mode and the playback mode, and switches the output of the channel reception circuit 5 to be given to the video signal output circuit 7 in the record mode and the output of the signal playback circuit 11 in the playback mode. It will be done. The output of the video signal output circuit 7 is applied to one input terminal of the mixing circuit 8. The output of the character generation circuit 12 is applied to the other input terminal of the mixing circuit 8. This character generation circuit 1
2 is for converting the settings of the channel program circuit 1C into character display information, and includes a character generator, etc. The m gold circuit 8 converts the video signal from the video signal output circuit 7 and the characters from the character generation circuit 12. Mix with display signal. The output of the mixing circuit 8 is applied to a display device such as a color television receiver. The output of the AND gate 4 is further applied to a sequence circuit 14 via an OR gate 13. Further, a mode designation signal from a mode designation circuit 16 is applied to the sequence circuit 14 via an OR gate 13. This mode designation signal is V
This is a signal for specifying the operation mode of the TR. The sequence circuit 14 responds to the outputs from the AND gate 4 and the mode specifying circuit 16 to control the operation of the rotating magnetic head 9 and its drive mechanism (not shown) and the signal reproducing circuit 1.
The signal reproducing operation in step 1 is controlled by III. Furthermore, a mode designation prohibition circuit 15 is connected to the mode designation circuit 16 . This mode designation prohibition circuit 15 receives an on/off signal from the reserve switch 3 and
When the switch is closed, switching of the mode designation of the mode designation circuit 16 is prohibited.

Next, the operation of the conventional example shown in FIG. 2 will be explained.

Current time measured by clock circuit 1a and setting key 1d
The outputs of the channel program circuit 1C set by the above are constantly compared by the digital comparator 1b. That is, the internal RAM of the channel program circuit 1C
For example, information as shown in FIG. 3 is set therein, and this information is output to the digital comparator 1b and the character generation circuit 12. Note that the channel program circuit 10 stores the information in the frame in FIG. 3 in the form of a code, and the characters outside the frame are written for convenience of explanation to represent the meaning of the setting information. and these characters are not set. When the digital comparator 1b detects coincidence between the recording start time from the channel program circuit 1C and the current time from the clock circuit 1a, the coincidence detection output from the digital comparator 1h is sent to the memory circuit 18, and the coincidence detection output from the digital comparator 1h is sent to the memory circuit 18.
For example, the state becomes H'''. Then, when the recording end time and the current time match, the digital comparator 1
The state of the memory circuit 1e is inverted by the output of
Become II. Now, when a cassette for recording is inserted and the cassette switch 2 is turned on, and the user also turns on the reserve switch 3 for reserved recording, the "H" period of the above-mentioned memory circuit 1e (recording start time One output of the AND gate 4 becomes H'' during the period from 1 to 2) to the recording end time. The "H11 output" of the AND gate 4 causes the channel receiving circuit 5, signal recording circuit 6, video signal output circuit 7, mixing circuit 8 and sequence circuit fa14 to operate.

That is, a broadcast signal of a predetermined channel is received by the channel receiving circuit 5 and amplified and detected. The output signal of the channel receiving circuit 5 is applied to a video signal output circuit 7 via an analog switch 10, and is converted into a video signal that can be displayed on a CRT.

The output of the video signal output circuit 7 is given to a mixing circuit 8, and a display device such as a color television receiver! (not shown). On the other hand, the output of the channel receiving circuit 5 is given to the signal recording circuit 6 and subjected to FM modulation. The output of the signal recording circuit 6 is given to a rotary magnetic head 9 and recorded on a magnetic tape.

At this time, the sequence circuit 14 is operating, and the operation of the rotary magnetic head 9 and its associated drive mechanism is controlled.

By the way, when the reserve switch 3 is turned on for reservation recording, the mode designation prohibition circuit 15 operates and prohibits any mode designation in the mode designation circuit 16.

That is, when the reserve switch 3 is turned on, all operations such as normal playback, fast forwarding, rewinding, and recording are prohibited, and priority is given to reserved recording.

On the other hand, when the reserve switch 3 is turned off, the mode designation prohibition circuit 15 is disabled, and the mode designation circuit 16 allows the mode to be freely designated manually. For example, when a reproduction shade is specified, the signal reproduction circuit 11 is operated by the sequence circuit 14,
The signals on the magnetic tape reproduced by the rotating magnetic head 9 are demodulated and applied to the video signal output circuit 7 via the analog switch 10. The output of the video signal output circuit 7 is applied to a color television receiver as a reproduced video signal via a mixing circuit.

[Thinning to be Solved by the Invention] Since the conventional VTR reservation timer device is configured as described above, when the reserve switch 3 for reservation recording is turned on, the reservation recording operation is given priority and the reservation timer device is configured as described above. The drawback was that all operations were prohibited. For example, if you set a scheduled recording in the morning for that day's time between 8:00 pm and 8:30 pm and turn on the reserve switch 3, the VTR will no longer be able to play, fast forward, or rewind from that point on. There were problems such as storage.

This invention was made to solve the above-mentioned problems, and even if a reservation record is set, normal operation can be performed until the set time is reached, and even if the reservation record start time approaches. It is an object of the present invention to provide a reservation timer device for a recording/reproducing device that can reliably notify a user of the following information.

[Means for Solving the Problems] A reservation timer device for a recording/reproducing device according to the present invention includes a first storage means for storing at least a recording start time and a recording end time for reservation recording, and a current time. a timer means for measuring time; a first comparison means for comparing a recording start time and a recording end time stored in the first storage means with a current time measured by the timer means and detecting a match; When the first comparison means detects a match between the current time and the recording start time, the recording operation of the recording/reproducing device is started, and when the first comparison means detects a match between the current time and the recording end time, recording is performed. scheduled recording 1i11tJO means for terminating the recording operation of the playback device; detection means for detecting that the current time has reached a predetermined time before the recording start time; and a warning generating means for generating a warning with a birch when the birch is recognized.

[Operation] In this invention, when the current time reaches a predetermined time before the recording start time for reservation recording, the detection means detects this, and the warning generation means generates a warning, so that the current time does not differ from the conventional one. Without providing a reserve switch or a mode designation prohibition circuit, the user is alerted to the fact that the recording start time is approaching, thereby preventing reservation recording failures.

[Example] FIG. 1 is a block diagram showing one embodiment of the present invention.

In the figure, this embodiment is similar to the conventional example shown in FIG. 2 except for the following points, and corresponding parts are given the same numbers and their explanations will be omitted.

The first feature of this embodiment is that the reserve switch 3. shown in FIG. AND gate 4 and mode specification prohibition circuit 15
This means that the . Along with this deletion, another circuit is added in this embodiment. That is, digital comparator 1'.

A -2 minute setting circuit 1g and a warning generation instruction circuit 17 are newly added. Furthermore, the character generating circuit 12' is also slightly modified from the character generating circuit 12 shown in FIG. , -2 minute setting circuit 1g is a circuit that stores a time two minutes before each recording start time set in channel program circuit 1C. The digital comparator 1r is a circuit that compares the current time from the clock circuit 1a with the stored contents of the 12-minute interval determining circuit 1g and detects a match. The warning generation instruction circuit 17 is a circuit that instructs generation of a warning in response to the coincidence detection output from the comparator 1f. The character generation circuit 12' generates character information for displaying a list of the setting contents of the channel program circuit 1C, and also generates characters warning 2 minutes before the recording start time (for example, "2 minutes before recording. Insert the cassette tape. It is a circuit that generates information.

Next, on &! The operation of the embodiment will be explained. Similar to the conventional example shown in FIG. 2, when information is set and stored in the channel program circuit 1C by the setting key 11, the information signal (2 minutes before the recording start time &E recording end time set in the channel program circuit 1C) The signal obtained by subtracting 2 minutes) is set in the 12-minute setting time V81g configured from the RAM. The setting contents of the -2 minute setting circuit 1g and the current time from the clock circuit 1a are compared by the digital comparator 1r, and a match is detected. Digital comparator 1f
detects a match between the two and outputs a match detection signal,
The warning generation instruction circuit 17 (for example, composed of a monomulti circuit of approximately 2 minutes) is activated.

In response, a warning generation instruction is output from the warning generation instruction circuit 17, and the character generation circuit 12' operates. Like the character generating circuit 12 shown in FIG. Please insert the cassette tape”
) This kind of character generation circuit 12 also has the function of generating
' can generally be easily constructed using a simple microcomputer and character generator. Character generation circuit 12'
The output is mixed with a video signal in a mixing circuit 8 and displayed on a color television receiver. by this,
The user can reliably know that the start time of reservation recording is approaching. Therefore, even if a playback operation is being performed before the start of reserved recording, the operation can be interrupted to prepare for the reserved recording operation, and the conventional reserve switch 3 can be interrupted.
Even if the AND gate 4, mode designation prohibition circuit 15, etc. are not provided, reservation recording errors will not occur.

After 2 minutes have passed, similarly to the conventional example shown in FIG. 2, the digital comparator 1b memory circuit 1e controls the channel receiving circuit 5. Signal recording circuit6. The video signal output circuits 7 and 11 combined circuit 81, the rotating magnetic head 9, and the sequence circuit 14 operate to start recording operation, and the video signal received by the channel receiving circuit 5 is transferred to the inserted cassette tape by the signal recording circuit 6. FM! ! II and recorded.

On the other hand, in the reproduction mode, the operation is exactly the same as the conventional example shown in FIG.

In the above embodiment, the contents of the channel programs sequentially set by operating the setting keys 1d are stored in the RAM of the channel program circuit 1C, and the contents can be easily transferred to which mode (recording) by the character generating circuit 12'. Time, when playing, when stopping, when fast forwarding, when rewinding, etc.
), and can be displayed on a color television receiver as shown in FIG.

In the above embodiment, the reservation timer device used in a VTR has been described, but it can be widely used in other video equipment and audio equipment.

Further, in the above embodiment, the character generation circuit 12' driven by the warning generation instruction circuit 17 was taken as an example, but this may also be an audio warning. In this case, a warning sound may be simply generated, or a synthesized voice that reads out the cautionary statement may be generated. Furthermore, if the character generator circuit 12' displays Japanese characters as shown in FIG. 3, the scale of the character generator will increase and the cost will increase. It may also be displayed as follows.

Furthermore, when making a recording reservation, generally the most important thing is the reservation start time, but in the above embodiment, it is very easy to generate a warning display even before the reservation end time. - [Effects of the Invention] As described above, according to the present invention, a warning is generated a predetermined time before the start time of a recording reservation, so there is no need for a conventional reserve switch or a circuit for prohibiting mode specification. Mistakes in reservation records can be prevented without providing a system. Therefore, the user does not need to operate the reserve switch, which simplifies the operation for recording reservations, and reduces costs by eliminating the reserve switch. Furthermore, all recording and playback operations are no longer prohibited in the reserved recording setting mode as in the past, and the recording/reproducing device can be operated with full functionality before scheduled recording. Therefore, the recording/reproducing device can be used effectively.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention. FIG. 2 is a block diagram showing an example of a reservation timer device employed in a conventional VTR. FIG. 3 is a diagram showing the settings for reserved recording set in the channel program circuit 1C of FIG. 1 or 2. In FIG. In the figure, 1a is a clock circuit, 1b and 1r are digital comparators, 1C is a channel program circuit, 1d is a setting key, 1e is a memory circuit, 1g is a 12-minute setting circuit, 5 is a channel receiving circuit, and 6 is a signal recording circuit. , 7 is a video signal output circuit, 8 is a mixing circuit, 9 is a rotating magnetic head, 11 is a signal reproduction circuit, 12' is a character generation circuit,
14 is a sequence circuit, 16 is a mode designation circuit, and 17 is a warning generation instruction circuit.

Claims (4)

[Claims] (1) A reservation timer device for scheduled recording used in a recording/playback device that records and plays back video signals and/or audio signals on a recording medium, which includes a recording start time and recording end time for scheduled recording. a first storage means for storing at least a time; a timer means for measuring the current time; and a first storage means for storing at least a current time; the recording start time and the recording end time stored in the first storage means and the current time measured by the timer means; a first comparing means for comparing the current time and the recording start time to detect a match; when the comparing means detects a match between the current time and the recording start time, the recording operation of the recording/reproducing device is started; Scheduled recording control means for terminating the recording operation of the recording/reproducing device when a coincidence between the time and the recording end time is detected; and a detecting means for detecting that the current time has reached a predetermined time before the recording start time. , and a warning generating means for generating a warning in a manner that can be recognized by humans in response to the detection output of the detecting means. (2) The detection means compares the current time with a second storage means that stores a time a predetermined time before the recording start time, and detects a match. 2. A reservation timer device for a recording/reproducing device according to claim 1, further comprising a second comparison means for comparing the data. (3) A reservation timer device for a recording/reproducing device according to claim 1 or 2, wherein the warning generating means includes means for generating a video warning. (4) A reservation timer device for a recording/reproducing device according to claim 1 or 2, wherein the warning generation means includes means for generating an audio warning.