JPH0734037B2 - Timer device in magnetic recording / reproducing apparatus - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a magnetic recording / reproducing apparatus such as a VTR having a timer reservation function, and more specifically, various functions of the magnetic recording / reproducing apparatus can be controlled by a timer. The present invention relates to a simple timer device.

[Prior Art] Although the recent popularization of VTRs is remarkable, there is an increasing demand for recording reservation setting, that is, the operability of the timer unit, as if it is proportional to the increase in the popularization rate.
Therefore, it is no exaggeration to say that the improvement of the operability of the timer part plays a part in the spread.

By the way, in a conventional VTR, as shown in FIG. 4, a current time, a recording start time, a recording time, a channel storage unit, a display unit, an input unit, a comparison circuit for the current time and the recording start time, and the comparison circuit are used. The control circuit for controlling the recording circuit based on the comparison result of 1. was all provided in the VTR.

In FIG. 4, a is a display unit, b is a channel storage unit, c is a recording time storage unit, d is a recording start time storage unit, and e is a current time counting unit. Can be set to. Further, the contents of these storage sections are compared with the current time by the comparison circuit g, and the drive of the recording circuit i is controlled via the control circuit h according to the comparison result.

[Problems to be Solved by the Invention] However, according to the above-described conventional method, a fluorescent display tube is turned on as a display and a recording circuit is controlled, so that current consumption is increased and a long timer backup is performed. Is impossible.

Further, when trying to set the timer at hand, there is a problem in that the conventional timer device cannot properly construct the system in both the wire remote controller and the wireless remote controller.

[Means for Solving the Problem] The present invention provides at least a current time display unit, a current time clock unit, a display unit for displaying recording reservation contents, a storage unit for storing the recording reservation contents, and a recording unit. A main body side timer device having a control means for controlling the operation of the circuit, at least a current time display part, a current time clock part, and a display means for displaying the recording reservation content, which are separated from the main body side timer device. A storage means for storing the recording reservation contents, a data input means for arbitrarily setting the current time data and data indicating the recording reservation contents, and detection of coincidence between the current time and the recording start time and recording end time. And a remote controller side timer device having at least the present time, a recording reservation content, a recording start time match, and a recording end time match of the remote controller side timer device. Data is transmitted to the main body side timer device, the remote control side timer device can display and store the current time and recording reservation content from the remote control side timer device on the main body side timer device, and the recording circuit. And a data transmission section capable of controlling the above operation.

EXAMPLES Examples of the present invention will be described below with reference to the drawings.

Example 1 A first example according to the present invention is shown in FIG.

In FIG. 1, three parameters of the current time, the recording start time, and the recording time are displayed on the display unit 13 provided in the main body timer device 12, and these three parameters are respectively the current time clock unit 14 and the recording start. It is based on the data stored in the time storage unit 15 and the recording time storage unit 16. The main body side timer device 12 is provided with a control circuit 17, and the drive of the recording circuit 18 is controlled via the control circuit 17.

On the other hand, the remote control timer device 19 is provided with a display section 20 for displaying the same parameters as those of the main body side timer apparatus 12, and further, a current time clock section 21 storing data of those parameters, a recording start time. A storage unit 22 and a recording time storage unit 23 are provided. And these storage units 21
By operating the input unit 24, the user can freely rewrite any of the data items 23 to 23.

Further, the data stored in each of the storage units 21 to 23,
The comparison circuit 25 compares whether or not a predetermined parameter value has been reached, and based on the comparison result, sends a serial data signal to the data transmission unit 27 of the main body side timer device 12 via the data transmission unit 26. .

Example 2 A second example according to the present invention is shown in FIG.

In FIG. 2, the display unit 29 provided in the main body side timer device 28 is provided with a display unit capable of displaying channels on the display unit 13 in the first embodiment, and correspondingly, the channel storage unit 30 is provided. It is newly added. Further, the remote controller side timer device 31 is also provided with a display portion for displaying a channel on the display unit 32, similarly to the main body side timer device 28, and is further provided with a channel storage unit 33. The other structure is the same as that of the first embodiment described above.

Then, the main body side timer devices 12, 28 store and display the data transmitted from the remote controller side timer devices 19, 31. Regarding the display of the current time, the current time measuring unit 14 in the main body timer device 12, 28 keeps time until the time is updated by the data from the remote control timer device 19, 31.

Further, the main body side timer devices 12 and 28 are provided in the magnetic recording / reproducing device, and the remote control timers 19 and 31 are provided in the remote control transmitter for remotely controlling the magnetic recording / reproducing device.

Hereinafter, an example of the data format of the serial signal will be described with reference to FIGS. 3 (A) and 3 (B). Here, FIG. 3 (A) shows the structure of the data packet, and FIG. 3 (B) shows the data modulation method.

1. [Modulation method] (1) For data modulation, 4 bits x 2 data are combined into 8 bits, and the pulse position is such that theoretical "0" and logical "1" correspond to pulse periods of 1 ms and 2 ms, respectively. Use modulation method.

2. [Start pulse] (1) A pulse train terminated by the "L" level of 10 ms after 16 consecutive logic "0" s are output, once when the first packet to the third packet are transferred. To be done.

3. [Control Data] (1) This is 4-bit × 4 data that specifies whether or not timer recording is being executed and whether or not there is a reservation.

On-data (timer recording execution start)… 1111 (0FH) On-data (timer recording execution)… 1110 (0EH) Off-data (timer recording execution end / reserved)… 0011 (3) Off-data (timer recording standby ・Reserved)… 0010 (2) Off data (timer recording execution end / no reservation)… 0001 (1) Off data (timer recording standby / no reservation)… 0000 (0) NO OPERATION… 4 to 0DH (2) ( When three or more bit patterns of item 1) are received, the data is validated. When there are two or less identical patterns, it is set to NO OPERATION.

(3) As for the data other than the control data, as will be described later, the data coincides between the packets, but the control data is judged within one packet. Therefore, even if the control data is NO OPERATION in the first packet, correct data can be received in the second and third packets.

4. [Current time data] (1) Day of the week… 0-6: (Sun, Mon, Tue, Wednesday, Thursday, Friday) 0 1 2 3 4 5 6 (2) 10 o'clock digit… 0-2 (3) hour digit… 0 9 (4) 10 minute digit ... 0-5 (5) minute digit ... 0-9 (6) 10 second digit ... 0-5 (7) second digit ... 0-9 6. [Recording time data] (1) Hour digit… 0-9 (2) 10 minute digit… 0-5 (3) Minute digit… 0-9 7. [Reserved channel data] (1) Tenth digit… 0 -9 (2) 1st digit ... 0-9 8. [Error detection of data] (1) Current time data, recording start time data, recording time data, and channel data are twice in 3 packets. If the same data exists, that data is valid.

(2) For control data, error detection is performed in the packet as described above.

(3) If the data matches in the first two packets,
The third packet may be ignored.

(4) When different data is received at all three times, set to NO OPERATION except control data.

As described above, according to the present invention, since the remote control timer device is separated from the main body timer device, it is not necessary to drive the control circuit, for example, and the remote control timer device is not required. Since a low power type display element such as a liquid crystal can be used for display, the power consumption of the remote control timer device can be suppressed. Therefore, it becomes possible to back up the battery for a long time.

Furthermore, since the data transmission unit transmits the current time data and the recording reservation data arbitrarily set by the remote control timer device to the separated main body timer device, the current time and the recording reservation content can be arbitrarily established. The operability at the time of setting can be improved, and the system can be easily assembled for both the wire remote controller and the wireless remote controller when the timer is set by the remote controller remote from the magnetic recording / reproducing apparatus main body. .

Also, even if the power supply to the main body timer device is temporarily stopped due to a power outage or an unexpected accident, the current time of the main body timer device can be corrected by the remote control timer device, and recording at the desired time can be performed. The start and end operations can be performed, and reliable timer reserved recording is always possible.

[Brief description of drawings]

1 and 2 show an embodiment of a timer device in a magnetic recording / reproducing apparatus according to the present invention, FIG. 1 is a block diagram showing the first embodiment, and FIG. 2 is a second embodiment. It is a block diagram shown. 3A and 3B are views for explaining the data format of the serial signal, and FIG. 4 is a block diagram showing a conventional timer device. 12,28 …… Main unit side timer device 19,31 …… Remote control side timer device

Claims (2)

[Claims] 1. A current time display unit, a current time clock unit, a display unit for displaying the recording reservation contents, a storage unit for storing the recording reservation contents, and a control unit for controlling the operation of the recording circuit. A main body side timer device, and a main body side timer device, which is separated from the main body side timer device, at least a current time display unit, a current time clock unit, a display unit for displaying the recording reservation content, and the recording reservation content Remote control side having storage means for performing the above, data input means capable of arbitrarily setting current time data and data indicating recording reservation contents, and comparing means for detecting a match between the current time and the recording start time and recording end time Data indicating at least the current time, the recording reservation content, the recording start time match, and the recording end time match between the timer device and the remote control timer device are stored in the main body timer device Data that enables the remote control timer device to display and store the current time and recording reservation content from the remote control timer device on the main body timer device, and to enable operation control of the recording circuit. A timer device in a magnetic recording / reproducing apparatus, comprising a transmission unit. 2. A timer device in a magnetic recording / reproducing apparatus according to claim 1, wherein the recording reservation content includes a recording start time, a recording time, and a channel to be recorded.