JP4432726B2 - Recording apparatus and recording method - Google Patents

Description

  The present invention relates to a recording apparatus or the like capable of recording video, and more particularly to a recording apparatus and a recording method for recording based on an input recording reservation.

2. Description of the Related Art Conventionally, there is a recording / reproducing apparatus that includes a recording medium such as a DVD (Digital Versatile Disk) or an HDD (Hard Disk Drive) and can record and reproduce video. This recording / playback apparatus can receive a television broadcast signal distributed from a broadcasting station, for example, and record content (video of a television program) included in the television broadcast signal on a DVD or HDD. Further, the recorded content can be reproduced and the video can be output to the display device.
Such a recording / reproducing apparatus can perform timer recording (reserved recording) for recording a program scheduled to be broadcast in addition to real-time recording for recording a program being broadcast. In the case of real-time recording, the start of recording is instructed at an arbitrary timing. In the case of timer recording, a recording start time, a recording end time, and a recording channel are input. According to the input contents, the recording / playback apparatus sets a tuner, waits for the recording start time, and starts recording. When the time comes, recording starts. For this reason, the recording / reproducing apparatus usually has a built-in timing circuit.

  In the case of such timer recording, it is preferable that the recording of the TV program starts at the exact time. Conventionally, in order to improve the accuracy of the clock function, a crystal oscillator has been used. However, even if a crystal oscillator is used, it will deviate from an accurate time as time passes, and for example, an error of about 10 seconds per month will occur.

Since it is complicated to frequently set the time of the recording / reproducing apparatus, recently, a just clock function has been developed. This just clock function detects a reference time (for example, 0:00 pm and 7:00 pm) from broadcast radio waves transmitted from a specific broadcast station (for example, NHK station), and sets a clock circuit based on the detected signal. A mechanism that automatically corrects.
In the recording / reproducing apparatus having the just clock function, the error is automatically corrected, so there is no need to perform time adjustment. Therefore, it is possible to accurately record the program reserved for the timer from the beginning.

Some recording / reproducing apparatuses include a thumbnail processing circuit (see, for example, Patent Document 1). This thumbnail processing circuit obtains image data such as the head portion of the content recorded on the HDD or the like and applies a reduction zoom process to generate thumbnail data. The generated thumbnail data is subjected to a compression process according to a JPEG (Joint Photographic Expert Group) method and stored in a temporary storage unit. As the image data to be subjected to thumbnail processing, in addition to the image at the beginning of the content, for example, image data for each scene where the screen changes, image data for each scene where the BGM changes, and the like can be cited.
By displaying the thumbnail image stored in the temporary storage unit of the image playback device on the display device, the contents can be easily confirmed, and the editing operation can be easily performed. Further, the edited video can be easily copied from, for example, an HDD to a DVD, and a series of storage operations from an old tape medium to the latest DVD digital media can be easily realized.

JP 2004-222268 A (pages 9 to 10, FIG. 8)

Here, in recent years, tuners that can watch satellite broadcasts have become widespread. For this reason, a recording / reproducing apparatus capable of designating a satellite broadcast channel as a recording channel for timer reservation has been developed.
This satellite broadcasting is a broadcasting system in which various programs can be viewed by radio waves sent from a geostationary satellite floating 36,000 kilometers above the equator. The basic mechanism is to send radio waves from a terrestrial broadcasting station using a large transmission facility, relay the radio waves on a geostationary satellite, and irradiate each household on the ground. As the geostationary satellite, there is a broadcasting satellite called BS and a communication satellite called CS.

Since such satellite broadcasting performs radio wave transmission via a geostationary satellite, a time delay occurs compared to terrestrial broadcasting (terrestrial broadcasting), which causes inconvenience. In other words, since the time adjustment is automatically performed by the just clock function described above, in the case of terrestrial broadcasting, recording starts at the start of the program reserved for recording, and the image data of the head part of the program is created as a thumbnail image. Is done. On the other hand, in the case of satellite broadcasting, the start of recording does not coincide with the start of the program even though it has a just clock function due to time delay of radio wave transmission. For this reason, even if the satellite broadcast is reserved and recorded, image data is not created as a thumbnail image at the beginning of the program.
In this way, when a terrestrial broadcast program is reserved for recording, a desired thumbnail image is not created in the case of satellite broadcasting, although a desired thumbnail image is created.

  The present invention has been made in order to solve the technical problems as described above, and an object of the present invention is to provide a recording apparatus and a recording method that can cope with reserved recording for a channel in which a time delay occurs. It is to provide.

For such a purpose, the recording apparatus to which the present invention is applied is based on the recording reservation information received by the receiving means, and the recording reservation information including matters relating to the recording time and matters relating to the recording channel. Are recorded by the recording means. Further, it is determined by the determining means whether or not the start of recording should be delayed from the items regarding the recording channel in the recording reservation information received by the receiving means. When it is determined by the determining means that the start of recording should be delayed, the start of recording by the recording means is delayed by the delay means for a predetermined time. The item relating to the recording time here refers to the recording start time and the recording end time, and the item relating to the recording channel refers to the recording channel. Further, the determination by the determining means as to whether or not the start of recording should be delayed is performed based on whether or not the recording channel is based on satellite broadcasting. More specifically, when the recording channel is based on satellite broadcasting Then, it is determined by the determining means that the start of recording should be delayed. In addition, the predetermined amount of time here means a predetermined amount based on a time delay due to radio wave transmission via a geostationary satellite.
The end of the recording for the recording reservation information for which the start of recording is delayed can be configured to be delayed by the delay means by the same time as a predetermined time.
It can also be configured such that the image data of the head portion of the content recorded by the recording means is subjected to thumbnail processing by the processing means.

  From another point of view, the recording apparatus to which the present invention is applied can make a recording reservation for satellite broadcasting, and the satellite broadcasting is recorded by the recording means based on the input recording reservation information, and the satellite broadcasting is recorded. Sometimes, the start and end of the recording by the recording means are delayed by the delay means by a predetermined time.

  Further, from another point of view of the present invention, the recording apparatus to which the present invention is applied receives the recording reservation information including the recording start time, the recording end time and the recording channel by the receiving means, and the recording received by the receiving means. The contents broadcast on the recording channel of the recording reservation information are recorded by the recording means from the time earlier than the recording start time of the reservation information to the time later than the recording end time of the recording reservation information. In addition, a reproduction start position corresponding to the recording start time and a reproduction end position corresponding to the recording end time in the image data recorded by the recording unit are acquired by the acquisition unit. Further, it is determined by the determining means whether or not the recording start time of the recording reservation information should be delayed from the recording channel of the recording reservation information received by the receiving means. Then, when the determination unit determines that the recording start time is to be delayed by the determination unit, the acquisition unit sets the playback start position to a position lowered by an amount corresponding to a predetermined time. Further, with respect to the recording reservation information for which it is determined that the recording start time should be delayed by the determination means, a position where the recording reservation information is lowered by an amount corresponding to a predetermined time is set as the reproduction end position.

  Further, when the present invention is viewed from another viewpoint, the recording method to which the present invention is applied accepts the recording reservation information including items relating to the recording time and items relating to the recording channel in the accepting step, and the recording accepted in the accepting step. Record in the recording step based on the reservation information. Further, it is determined in the determination step whether or not the start of recording should be delayed from the items regarding the recording channel in the recording reservation information received in the reception step. When it is determined by the determination step that the start of recording should be delayed, the start of recording by the recording step is delayed by a delay step by a predetermined time.

  Further, from another viewpoint, the recording method to which the present invention is applied receives the recording reservation information including the recording start time, the recording end time, and the recording channel in the receiving step. In addition, the content recorded on the recording channel of the recording reservation information is recorded in the recording step from the time earlier than the recording start time of the recording reservation information received in the receiving step to the time later than the recording end time of the recording reservation information. To do. In addition, a reproduction start position corresponding to the recording start time and a reproduction end position corresponding to the recording end time in the image data recorded in the recording step are acquired in the acquisition step. Further, it is determined in the determination step whether or not the recording start time of the recording reservation information should be delayed from the recording channel of the recording reservation information received in the reception step. In the acquisition step, when it is determined in the determination step that the recording start time should be delayed, a position that is lowered by an amount corresponding to a predetermined time is set as a reproduction start position.

  According to the present invention, it is possible to deal with a case where reserved recording is performed for a channel in which a time delay occurs.

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
FIG. 1 is a block diagram showing a configuration of a recording apparatus 10 according to the present embodiment.
As shown in FIG. 1, the recording apparatus 10 includes a remote control receiving unit 11 that receives an operation signal transmitted from a remote controller, and a tuner (reception unit) 12 that receives a television broadcast. In addition, the recording apparatus 10 includes a video signal generation unit 13 that generates a video signal for projecting a video, a video recording unit 14 that records a video, and an OSD processing unit 15 that performs an on-screen display (OSD) process. I have. In addition, the recording apparatus 10 includes a ROM (Read Only Memory) 16 for reading information once written, a temporary storage unit 17 for temporarily storing various information and data, and a control unit 18 for controlling these units. And.
That is, the recording apparatus 10 receives a television broadcast signal distributed from a broadcasting station by a tuner 12 via an antenna (not shown) connected to the apparatus 10, and content (video of a TV program) included in the television broadcast signal. Is recorded on the video recording unit 14. Further, the recording device 10 can reproduce the content recorded in the video recording unit 14 and display the video on the display device 19 connected to the present device 10.
The tuner 12 includes a satellite broadcast tuner 12a and a terrestrial broadcast tuner 12b.

The recording apparatus 10 receives an operation signal sent from a remote controller (not shown) operated by the user via the remote control receiver 11. When the remote control receiving unit 11 receives the operation signal, the recording device 10 performs various operations on the video recording unit 14 such as the selection of the television broadcast to be received, the content recording / playback, and the automatic content deletion prevention setting.
More specifically, a remote controller (not shown) includes various operation keys (not shown) for instructing these various operations. When the various operation keys are operated, an operation signal corresponding to the operation is transmitted as an infrared signal. When the remote control receiver 11 receives a signal from a remote controller (not shown), it outputs a signal corresponding to the operation of the remote controller (not shown) to the controller 18. Under the control of the control unit 18, the tuner 12 tunes the reception frequency to a frequency corresponding to the channel instructed to be selected by a remote controller (not shown), so that the TV broadcast signal of the channel instructed to select is not shown. Receive via antenna. The video signal generation unit 13 demodulates the television broadcast signal received by the satellite broadcast tuner 12a or the terrestrial broadcast tuner 12b of the tuner 12 and generates a video signal for displaying the video on the display device 19 connected to this apparatus. The video signal generated by the video signal generation unit 13 is output to the display device 19 via the OSD processing unit 15. Thereby, the content included in the television broadcast signal is displayed on the display device 19.
The control unit 18 is connected to the ROM 16 and the temporary storage unit 17, and exchanges data (information) as necessary.

  The video recording unit 14 records and records the content of the television program included in the television broadcast signal by recording the video signal generated by the video signal generation unit 13 under the control of the control unit 18. A video signal is read out. The video signal read from the video recording unit 14 is output to the display device 19 via the OSD processing unit 15. Thereby, the recorded content is reproduced and displayed on the display device 19. Also, the video recording unit 14 records the content name of the recorded content, the recording date and time, the number of times of reproduction, and the setting details of the automatic deletion prevention setting in association with each content as content management information under the control of the control unit 18. To do.

The OSD processing unit 15 superimposes various on-screen display signals on the video signal. As a result, a video on which images based on the on-screen display signal are superimposed is displayed on the display device 19. The ROM 16 stores an operation program for the control unit 18.
The control unit 18 controls the content recording operation to the video recording unit 14 in accordance with the recording operation received by the remote control receiving unit 11. In addition, when the content recording is started, the control unit 18 performs control to record the recording date and time in the video recording unit 14 in association with the content to be recorded, and manages the recording date and time of the content. Further, the control unit 18 controls the playback operation of the content from the video recording unit 14 in accordance with the playback operation received by the remote control receiving unit 11.

Next, the video recording unit 14 will be described with reference to FIG.
FIG. 2 is a block diagram showing the configuration of the video recording unit 14 of FIG.
As shown in FIG. 2, the video recording unit 14 includes an HDD 21 as a recording medium, a read / write head 22 that reads from and writes to the HDD 21, and a head group 23 including these heads 22. The video recording unit 14 also includes a preamplifier / amplifier 24, a head group selection circuit 25 that selects each read / write head 22 of the head group 23, a read channel 26, and a servo timing that generates a predetermined timing signal. And a signal generator 27. The video recording unit 14 includes a track following DAC (digital / analog conversion) 31 and a seek DAC 32. The track following DAC 31 and the seek DAC 32 have operational amplifiers 31a and 32a and capacitors 31b and 32b, respectively.
In addition, the video recording unit 14 includes an analog servo compensator 33 that performs servo compensation in order to facilitate mode switching, and a multiplexer 34 that switches between the track following DAC 31 or the seek DAC 32. The video recording unit 14 includes a transconductance amplifier 35 that supplies power to the voice coil motor 36 and a voice coil motor (VCM) 36.

  The video recording unit 14 can use a conventional hard disk drive, but its operation will be briefly described. The read / write head 22 is positioned by two independent operation modes, a seek mode and a track following mode. Then, one channel having the track following DAC 31 is applied to the track following mode, and the other channel having the seek DAC 32 is applied to the seek mode.

  Although the HDD 21 is used as the recording medium of the video recording unit 14, other recording media such as a DVD may be used. In this case, a DVD constructed by a well-known common technique can be used. Although the recording apparatus 10 has been described as an embodiment, the present invention can also be applied to a personal computer having a television recording function.

Next, the control unit 18 will be described with reference to FIG.
FIG. 3 is a block diagram illustrating a partial configuration of the control unit 18.
As shown in FIG. 3, the control unit 18 includes a reception unit 41, a recording control unit 42, a determination unit 43, and a time management unit 44. The accepting unit 41 accepts a signal corresponding to the operation signal received by the remote control receiving unit 11 (see FIG. 1). For example, the reception unit 41 receives a signal as recording reservation information including a recording start time, a recording end time, and a recording channel. Then, the recording control unit 42 receives the recording reservation information received by the receiving unit 41. The determination unit 43 determines whether the recording channel of the input recording reservation information is a satellite broadcast or a terrestrial broadcast. This determination can be made from data stored in advance in the temporary storage unit 17 (see FIG. 1). The determination unit 43 outputs the determination result to the recording control unit 42.

  The time management unit 44 has a timer function, and manages the recording start time and the recording end time of the recording reservation information by this timer function. Further, when the determination unit 43 determines that the recording channel of the recording reservation information is satellite broadcasting, the time management unit 44 sets the recording start time and the recording end time of the recording reservation information for a predetermined time. Delay.

Next, a processing procedure when a recording reservation is made will be described with reference to FIG.
FIG. 4 is a flowchart showing a processing procedure when a recording reservation is made.
As shown in FIG. 4, timer recording (reserved recording) is set in the recording apparatus 10 (see FIG. 1) (step 101). That is, the recording start time A, the recording end time B, and the recording channel C are input to the remote control. Note that the recording start time A includes the date on which recording starts. Further, the recording end time B can also include the date on which recording ends. Instead of the recording end time B, the recording time may be input to the remote control. When the recording time is input, the recording end time B can be obtained by a simple calculation.

These recording start time A, recording end time B, and recording channel C are input as recording reservation information from the remote control to the control unit 18 (see FIG. 1) through the remote control receiving unit 11 (see FIG. 1). In the control unit 18 (see FIG. 1), the recording reservation information is sent to the recording control unit 42 (see FIG. 3) via the receiving unit 41 (see FIG. 3).
For example, an input using a G code may be considered as the recording reservation information. The G code here refers to four elements (four elements of recording) that are originally required for scheduled recording, that is, the date, recording channel, recording start time, and program length, using a predetermined compression coding technique. It is replaced with an 8-digit number.

The recording control unit 42 (see FIG. 3) causes the determination unit 43 (see FIG. 3) to determine whether or not the recording channel C of the recording reservation information is a satellite broadcast (step 102). For this determination, the recording control unit 42 (see FIG. 3) stores the distinction between satellite broadcasting and terrestrial broadcasting as data in the temporary storage unit 17 (see FIG. 1) in advance. Can be determined based on
Here, this determination is made if the recording channel C is a satellite broadcast, the recording start time A and the recording end time B need to be delayed, while if the recording channel C is a terrestrial broadcast other than the satellite broadcast, the recording is started. This is because it is only necessary to start and end recording without delaying the start time A and the recording end time B. More specifically, since satellite broadcasting performs radio wave transmission via a geostationary satellite located approximately 36000 km above the ground, a time delay occurs compared to terrestrial broadcasting. Delay (correction) is required.

When the determination unit 43 (see FIG. 3) determines that the recording channel C is a satellite broadcast, a message to that effect is returned to the recording control unit 42 (see FIG. 3). Receiving it, the recording control unit 42 (see FIG. 3) instructs the time management unit 44 (see FIG. 3) to delay. That is, the time management unit 44 (see FIG. 3) delays the input recording start time A and recording end time B (step 103). Specifically, the delay time a is added to the recording start time A and the recording end time B. This is expressed as follows:
Recording start time A = Recording start time A + Delay time a
Recording end time B = Recording end time B + Delay time a
Thus, the same value of the delay time a is added to both the recording start time A and the recording end time B. For this reason, the recording time from the recording start time to the recording end time does not change.
The delay time a can be a value of 0.25 seconds. When a geostationary satellite used for satellite broadcasting is located at about 36000 km on the ground, the time for transmitting twice that distance is about 240 to 250 ms (milliseconds). In Japan, the same value can be adopted uniformly. This is because there is almost no difference in transmission time between the northernmost end and the southernmost end in Japan compared with the radio wave transmission distance of satellite broadcasting, and it is considered that there is no practical problem.
By adopting a uniform value in this way, it is not necessary to set the use area in the recording device 10 (see FIG. 1) in advance, and an increase in the burden on the user can be avoided. Moreover, the control becomes simple and the additional cost can be suppressed.

When the recording channel C is a terrestrial broadcast, or when the recording channel C is a satellite broadcast and the above-described delay processing is performed, the process proceeds to the next step. That is, it is determined by the time management unit 44 (see FIG. 3) whether or not the recording start time A has come (step 104). In other words, the recording apparatus 10 stands by until the recording start time A is reached.
Of course, when the recording channel C is satellite broadcasting, it is not the input recording start time but the recording start time to which the delay time a is added. The recording end time is also the recording end time to which the delay time a is added.
When the time management unit 44 (see FIG. 3) determines that the recording start time A has come, the recording control unit 42 instructs the video recording unit 14 (see FIG. 1) to start recording (step 105). . That is, in the video recording unit 14 (see FIG. 1), the program broadcast on the recording channel C is recorded on the HDD 21 (see FIG. 2).

After the recording is started, the time management unit 44 (see FIG. 3) determines whether or not the recording end time B is reached (step 106). When the time management unit 44 (see FIG. 3) determines that the recording end time B is reached, the recording control unit 42 instructs the video recording unit 14 (see FIG. 1) to end the recording (step 107).
Note that the recording start instruction and the recording end instruction by the recording control unit 42 may be performed a certain time, for example, 5 seconds before.

Next, a case where reserved recording is performed by the recording apparatus of the present embodiment will be described with reference to FIG.
FIG. 5 is a graph showing the relationship between the transmission timing, reception timing, and recording timing of satellite broadcasting, and the horizontal axis is the time axis. (A) in FIG. 5 shows the transmission timing from a satellite broadcast station, and (b) shows the reception timing of the satellite broadcast in a general home. Also, (c) and (d) show the recording timing when a satellite broadcast program received at a general home is recorded. (C) is a conventional case, and (d) is a case of the present embodiment.

As shown in FIGS. 5A and 5B, there is a predetermined delay time a difference between the transmission timing and the reception timing. In other words, the beginning and the end of the program a, the program b, and the program c are shifted by the same time. More specifically, the beginning of the program B is transmitted at time α, but is received at time β. Similarly, the end portion of the program B is transmitted at time γ, but is received at time δ. Putting these together,
Delay time a = time β−time α = time δ−time γ
become.
Note that the reason for the delay is due to radio wave transmission with a geostationary satellite, as already described.

In the conventional case, as shown in FIG. 5C, since the recording timing is the same as the transmission timing (see FIG. 5A), the start and end of the program are shifted by the delay time a. End up. That is, recording starts at time α and recording ends at time γ. As a result, the end of the program A that is not the target of recording is recorded, while the end of the program B that is the target of recording is not recorded.
Therefore, in the case of the present embodiment, as shown in FIG. 5D, the recording timing is set to the reception timing by setting the recording start to time β and the recording end to time δ in consideration of the delay time a. (See (b) of FIG. 5). That is, recording starts at the beginning of the program b, and recording ends at the end of the program b. Therefore, recording can be performed as desired by the user.

  The case of satellite broadcasting has been described above. However, in the case of terrestrial broadcasting, there is no delay time a, and there is no need to consider the influence of delay. For this reason, the discriminating unit 43 (see FIG. 3) of the control unit 18 (see FIG. 1) discriminates satellite broadcasting or terrestrial broadcasting, so that the user can record without being aware of terrestrial broadcasting and satellite broadcasting. Make a reservation.

Next, another embodiment will be described with reference to FIG. 6, FIG. 7, and FIG.
FIG. 6 is a flowchart showing a processing procedure associated with the start of scheduled recording, FIG. 7 is a flowchart showing a processing procedure associated with the end of scheduled recording, and FIG. 8 is performed according to the processing procedures shown in FIGS. It is a graph explaining the case where reservation recording is carried out. (A) in FIG. 8 shows the transmission timing from the satellite broadcast station, and (b) shows the reception timing of the satellite broadcast in a general home. (C) shows the recording timing when a satellite broadcast program received at a general home is recorded.

  Here, the processing procedure shown in FIGS. 6 and 7 starts recording before the recording start time A and ends recording after the recording end time B, as shown in FIG. Then, the playback start point and playback end point in the recorded video are calculated and stored. Thus, when the recorded video is played back, the playback starts from the playback start point, and the playback ends at the playback end point.

First, a processing procedure associated with the start of reserved recording will be described.
As shown in FIG. 6, timer recording (reserved recording) is set in the recording apparatus 10 (see FIG. 1) (step 201). That is, the recording start time A, the recording end time B, and the recording channel C are input as recording reservation information. Since step 201 is the same as step 101 in FIG. 4 described above, details are omitted.
Thereafter, it is determined by the time management unit 44 (see FIG. 3) whether or not a predetermined time before the recording start time A has come (step 202). The predetermined time can be set to 5 seconds, for example. That is, recording of the broadcast program of the recording channel C is started from 5 seconds before the recording start time A (step 203).

And it is discriminate | determined by the discrimination | determination part 43 (refer FIG. 3) whether the recording channel C is a satellite broadcast (step 204). When the determination unit 43 (see FIG. 3) determines that the recording channel C is a satellite broadcast, a message to that effect is returned to the recording control unit 42 (see FIG. 3). Receiving it, the recording control unit 42 (see FIG. 3) performs an operation of adding the delay time a to the recording start time A (step 205). When the determination unit 43 (see FIG. 3) determines that the recording channel C is not a satellite broadcast but a terrestrial broadcast, a message to that effect is returned to the recording control unit 42 (see FIG. 3). In this case, the recording control unit 42 (see FIG. 3) proceeds to the next step without calculating the recording start time A.
After the recording channel C is determined to be terrestrial broadcast, or after the recording channel C is determined to be satellite broadcast and the delay processing described above is performed, a playback start point is calculated (step 206), and the calculated playback start point is calculated. Is stored (step 207). That is, the recording control unit 42 (see FIG. 3) calculates a playback start point corresponding to the recording start time A in the recorded video (image data) and stores it in the temporary storage unit 17 (see FIG. 1). Let

The processing procedure associated with the start of reserved recording is performed as described above. Then, the processing procedure associated with the end of the reserved recording is performed as described below.
As shown in FIG. 7, it is judged by the time management unit 44 (see FIG. 3) whether or not a time after a predetermined time has elapsed from the recording end time B (step 251). This predetermined time can be set to 5 seconds, for example. That is, the recording of the broadcast program on the recording channel C ends 5 seconds after the recording start time B (step 252).
Thereafter, whether or not the recording channel C is a satellite broadcast is determined by the determination unit 43 (see FIG. 3) (step 253). When it is determined that the recording channel C is a satellite broadcast, the recording control unit 42 (see FIG. 3) performs an operation of adding the delay time a to the recording end time B (step 254).
After the recording channel C is determined to be terrestrial broadcast, or after the recording channel C is determined to be satellite broadcast and the delay processing described above is performed, a playback end point is calculated (step 255), and the calculated playback end point is calculated. Is stored (step 256). That is, the recording control unit 42 (see FIG. 3) calculates a playback end point corresponding to the recording end time B in the recorded video (image data) and stores it in the temporary storage unit 17 (see FIG. 1). Let

Here, instead of determining whether or not the recording channel C is a satellite broadcast in the processing procedure accompanying the end of the reserved recording shown in FIG. 7, in the processing procedure accompanying the start of the reserved recording shown in FIG. It is also conceivable that whether or not it is broadcast is stored in the temporary storage unit 17 (see FIG. 1) and is read and determined.
Further, the operation of adding the delay time a to the recording end time B when it is determined that the recording channel C is a satellite broadcast is performed according to the processing procedure associated with the start of the reserved recording, and the operation result is stored in the temporary storage unit 17 (FIG. 1), and when the recording is finished, it may be read out immediately to calculate the playback end point.

  Although two embodiments have been described above, the present invention is not limited to these. That is, the embodiment described above discriminates between satellite broadcasting and terrestrial broadcasting, and considers delay time in satellite broadcasting, but may be configured to discriminate between digital broadcasting and analog broadcasting. Conceivable. In that case, in digital broadcasting, data is compressed and transmitted from the broadcasting station, and on the receiving side, it is returned to the original and displayed on the television, resulting in a delay time. On the other hand, such delay time does not occur in analog broadcasting. As described above, the embodiment described above is effective when there is a case where a delay occurs and a case where a delay does not occur. In other words, when the delay occurs, the recording is delayed, while when the delay does not occur, the recording is controlled so as not to delay. When delaying, a uniform delay time is used to simplify the control.

It is a block diagram which shows the structure of the video recording apparatus which concerns on this Embodiment. It is a block diagram which shows the structure of a video recording part. It is a block diagram which shows the structure of a part of control part. It is a flowchart which shows the process sequence when recording reservation is made. It is a graph which shows each relationship of the transmission timing of a satellite broadcast, a reception timing, and a video recording timing, and a horizontal axis is time. It is a flowchart which shows the process sequence accompanying the start of reservation video recording. It is a flowchart which shows the process sequence accompanying the completion | finish of reserved recording. It is a graph explaining the case where a reservation video recording is carried out by the processing procedure shown in FIG. 6 and FIG. 7, and a horizontal axis is time.

Explanation of symbols

DESCRIPTION OF SYMBOLS 14 ... Video recording part, 18 ... Control part, 41 ... Reception part, 42 ... Recording control part, 43 ... Discrimination part, 44 ... Time management part

Claims (4)

Receiving means for receiving recording reservation information including a recording start time, a recording end time and a recording channel ;
Recording means for recording based on the recording reservation information received by the receiving means;
Processing means for performing thumbnail processing on the image data of the head portion of the content recorded by the recording means;
Discriminating means for discriminating whether or not the recording channel in the recording reservation information received by the receiving means is by satellite broadcasting ;
When the recording unit determines that the recording channel is based on satellite broadcasting , the start and end of recording by the recording unit is determined based on a time delay due to radio wave transmission via a stationary satellite. A recording device including delay means for delaying by a minute. Receiving means for receiving recording reservation information including a recording start time, a recording end time and a recording channel;
Content broadcast on the recording channel of the recording reservation information from a time earlier than the recording start time of the recording reservation information received by the receiving means to a time later than the recording end time of the recording reservation information. Recording means for recording,
Obtaining means for obtaining a reproduction start position corresponding to the recording start time and a reproduction end position corresponding to the recording end time in the image data recorded by the recording means;
Processing means for performing thumbnail processing on the image data at the reproduction start position acquired by the acquisition means;
Discriminating means for discriminating whether or not the recording channel of the recording reservation information received by the receiving means is by satellite broadcasting ,
The acquisition unit, the when the recording channel is judged to be due to satellite by determining means, by an amount corresponding to the predetermined time based on the time delay due to radio wave transmission via the geostationary satellite postponement And a playback end position as the playback start position and the playback end position . A reception step for receiving recording reservation information including a recording start time, a recording end time, and a recording channel ;
A recording step of recording based on the recording reservation information received by the receiving step;
A processing step of performing thumbnail processing on the image data of the head portion of the content recorded by the recording step;
A determining step of determining whether or not the recording channel in the recording reservation information received in the receiving step is by satellite broadcasting ;
When it is determined by the determination step that the recording channel is a satellite broadcast , the start and end of the recording by the recording step are determined based on a time delay due to radio wave transmission via a stationary satellite. A recording method including a delay step for delaying by a minute. A reception step for receiving recording reservation information including a recording start time, a recording end time, and a recording channel;
Contents broadcast on the recording channel of the recording reservation information from a time earlier than the recording start time of the recording reservation information received in the receiving step to a time later than the recording end time of the recording reservation information A recording step for recording
An acquisition step of acquiring a reproduction start position corresponding to the recording start time and a reproduction end position corresponding to the recording end time in the image data recorded by the recording step;
A processing step of performing thumbnail processing on the image data at the reproduction start position acquired by the acquisition step;
A determination step of determining whether or not the recording channel of the recording reservation information received in the reception step is by satellite broadcasting ,
The obtaining step, the when the recording channel is judged to be due to satellite by determining step, by an amount corresponding to the predetermined time based on the time delay due to radio wave transmission via the geostationary satellite postponement A recording method, wherein the playback position is set as the playback start position and the playback end position .

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