JP2002125185A - Recording condition setting device and video recording device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To set a parameter value for efficiently using a recording medium. SOLUTION: On a recording condition setting screen of a portable terminal, an item "recording maximum time" indicating a recordable time by a video digital recorder, an item "recording time" indicating a recording time of a program to be recorded, Item "video resource" representing the resource of the video to be recorded, item "screen size" representing the size of the screen of the video to be recorded, item "frames / sec" representing the number of frames per second during recording, and The item "image quality" representing the image quality of the current image is displayed. The user
When a recording time is input, an optimum parameter value corresponding to the input recording time is calculated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a recording condition setting device and a video recording device, and more particularly to a recording condition setting device for setting a recording condition when digitally recording a video and a video recording device for digitally recording a video.

[0002]

2. Description of the Related Art In recent years, with the advance of digital technology, it has become possible to digitally record a video and easily utilize the digital video. However, the recording time is limited due to the limitation of the capacity of the storage medium.

Therefore, the recording reservation apparatus disclosed in Japanese Patent Laid-Open No. 11-232726 checks the remaining storage capacity of a storage medium, assigns priorities to programs to be stored, and records the programs in descending order of priority. Are doing.

[0004]

However, even if recording is performed in the triple speed mode using the conventional recording reservation device, the storage capacity is limited. For this reason, there is a problem that a program having a low priority is not recorded after all.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and an object of the present invention is to provide a recording condition setting device for setting parameter values for efficiently using a recording medium.

Another object of the present invention is to provide a video recording apparatus which performs recording based on parameter values related to optimum recording conditions.

[0007]

According to one aspect of the present invention, there is provided a recording condition setting apparatus, comprising: a parameter setting unit for setting a plurality of parameter values related to a recording condition when recording an image; Connected, can read and write multiple parameter values,
Parameter recording means for recording on a removable recording medium.

[0008] A plurality of parameter values related to recording conditions are recorded together on a recording medium such as a memory card.
Therefore, by performing recording using this recording medium, recording can be performed under optimal conditions.

Preferably, the recording condition setting device is further connected to a recording time setting means for setting a video recording time, a recording time setting means and a parameter setting means, and a recording time and a recordable capacity of a recording medium. And a first parameter updating unit for updating a plurality of parameter values based on the first and second parameter values.

A plurality of parameter values are updated so that the program of the recording time set by the recording time setting means falls within the recordable capacity of the recording medium. Therefore, by performing recording using this recording medium, recording can be performed under optimal conditions.

More preferably, the recording condition setting device comprises:
Further, it is connected to the recording time setting means and the parameter setting means, detects a change in any one of the plurality of parameter values, and updates other parameter values based on the recording time and the recordable capacity of the recording medium. And a second parameter updating means for performing the operation.

[0012] More preferably, the recording condition setting device comprises:
Further, a third parameter for updating a plurality of parameter values based on the type of the video resource is connected to the video resource setting means for setting the type of the video resource, and the video resource setting means and the parameter setting means. Updating means.

According to the video resource, a plurality of optimum parameter values corresponding to the video resource are selected. Therefore, by performing recording using this recording medium, recording can be performed under optimal conditions.

[0014] A video recording apparatus according to another aspect of the present invention comprises:
A recording condition reading means for reading a plurality of parameter values related to a recording condition when recording a video, which is recorded on a recording medium, and is connected to the recording condition reading means, and a program is read based on the plurality of parameter values. Video recording means for recording on a recording medium.

[0015] Preferably, the recording medium is a recording medium in which a plurality of parameter values are written by the above-described recording condition setting device.

In the above-described recording condition setting device, recording is performed using a recording medium on which a plurality of parameter values relating to recording conditions are recorded, so that recording can be performed under optimum conditions.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A video recording system according to an embodiment of the present invention is a portable terminal represented by a PDA (Personal Digital Assistants) for storing video recording conditions in a memory card, an electronic organizer, an electronic dictionary, and the like. And a video digital recorder for recording a program video based on the recording conditions recorded on the memory card.

Referring to FIG. 1, the portable terminal has a CPU (Central) having a clock function for controlling each part of the portable terminal.
Processing Unit 1 and various data and TV (televisio)
n) A display device 2 for displaying a program, and a display driver LSI (Large) connected to the display device 2 and controlling the display device 2
Scale Integration) 3 and a ROM (Read Only Memory) storing a program for controlling the operation and operation of the portable terminal.
mory) 4 and a data readable / writable RAM having a work area and a stack necessary for reproducing a TV program.
(Random Access Memory) 5, a keyboard 6 used by a user for inputting data and the like, a card controller / slot 7 in which a readable and writable memory card 8 can be mounted, and which controls reading and writing of the memory card 8. , CPU
1, including a bus for interconnecting the display driver LSI 3, ROM 4, RAM 5, keyboard 6, and card controller / slot 7.

FIG. 2 is an external view of a video digital recorder. On the front of the digital video recorder, video recording conditions (screen size, number of frames per second, image quality, etc.)
A display unit 9 for displaying a message, and a memory card 8 (FIG. 1).
Card slot 10 in which the camera can be inserted and an LED (Light Emitting Diode) 1 for displaying the state of the digital video recorder
1 is provided. The LED 11 is turned on when the digital video recorder is powered on, and blinks during video recording.

Referring to FIG. 3, the digital video recorder comprises:
An antenna 12 for receiving a TV signal; a TV tuner 13 connected to the antenna 12 for separating the TV signal into an analog video signal and an analog audio signal; and a TV tuner 1
3 and an A / D (Analogto) for converting an analog video signal output from the TV tuner 13 into a digital signal.
Digital) converter 14, an A / D converter 15 connected to the TV tuner 13, and converting an analog audio signal output from the TV tuner 13 into a digital signal,
The digital video signal and the digital audio signal are connected to the converters 14 and 15 and are converted to MPEG (Moving Picture Exposure).
(Digital Signal Processor) 16 that performs real-time compression using a compression method such as an erts group 4) and a display unit 9
A display LSI 23 connected to the display unit 9 and controlling the display unit 9;
A ROM (not shown) that is connected to the card slot 10, the LED 11, the DSP 16, and the display LSI 23, controls each section of the video digital recorder, stores an operation program, and a work memory (not shown) required for operation.
(Hereinafter, referred to as “microcomputer”) 18.

A method of setting recording conditions in a digital video recorder using a portable terminal will be described. The user operates the keyboard 6 (FIG. 1) of the portable terminal,
A recording condition setting screen as shown in FIG. 4 is displayed on the display device 2.

On the recording condition setting screen, an item “maximum recording time” indicating the time that can be recorded by the digital video recorder,
An item "recording time" indicating the recording time of the program to be recorded;
Item "video resource" indicating the resource of the video to be recorded
Item “screen size” representing the size of the screen of the video to be recorded, item “frames / second” representing the number of frames per second at the time of recording, and item “image quality” representing the image quality of the video at the time of recording. And are displayed.

The value of each item can be input by operating the keyboard 6 by the user. The item "video resource" takes a value from 0 to 4, and if the video resource is 0, it is unspecified, if it is 1, animation, if it is 2, news if it is 3, sports if it is 4, and drama if it is 4. Indicates something.

The item "screen size" indicates that the recording screen is 1 for a large screen and 2 for a small screen.
Here, a large screen is defined as 320 × 240 dots, and a small screen is defined as 160 × 120 dots.

A value from 1 to 10 can be set in the item "number of frames / second". The item “image quality” can be set to 1 and 2, where 1 represents the fine mode and 2 represents the normal mode. In the fine mode, recording is performed with twice the data amount of the normal mode.

When the "ENTER" key on the keyboard 6 is depressed when the recording conditions have been set, the set conditions are written to the memory card 8. "ESC" on keyboard 6
By pressing the key, it is possible to return from the recording condition setting mode to another mode.

Recording conditions are written in the memory card 8 in a format as shown in FIG. "REC TIME = 1 +
“30” indicates that the recording time is 1 hour 30 minutes, and “S
SIZE = 1 ”means that the screen size is a large screen.
“FRAME = 5” indicates that the number of frames per second is 5, and “QUALITY = 1” indicates that the image quality is in the fine mode.

The value of the item “video resource” in FIG.
When any of the values 1 to 4 is set, the values of the item “screen size”, the item “frames / second”, and the item “image quality” are initialized as shown in FIG. For example, when animation is selected as a video resource, the screen size is set to a large screen, the number of frames per second is set to 5, and the image quality is set to the normal mode.

In the case of an animation program, the number of frames per second is small, and the program can be viewed in normal image quality. Further, in the case of a news program, since audio is mainly used, the number of frames per second may be small on a small screen. In the case of a sports program or a drama program, the best values are obtained for the screen size, the number of frames per second, and the image quality. However, in the case of a drama, the number of frames per second is slightly smaller than in the case of a sports program.

Here, when the recording time is the longest, that is, the screen size is a small screen, and the number of frames / second is 1 frame / second.
Seconds, when the image quality is in the normal mode, the image is MPEG4
15 kbps image compression transfer rate when compressed with
(Kilo bits per second). When the image quality is set to the fine mode, the transfer rate is doubled to 30 kbps. If the number of frames / second increases, the number is multiplied. When the screen size becomes large, the transfer rate is quadrupled. In this way, the compression transfer rate of the image is calculated. It is also assumed that the compression transfer rate of audio is 8 kbps. For example, if the image compression transfer rate is 15k
In the case of bps, the recording / playback data per second is 23
It becomes k bits. When the capacity of the memory card 8 is 64M (mega) bytes, about 380 minutes (= 6 hours 20 minutes)
Recording becomes possible.

When the image size is a large screen, the number of frames per second is 5 frames, and the image quality is the fine mode, the image compression transfer rate is 15 kbps × 4 × 5 × 2 = 60.
0 kbps. The audio transfer rate is 8 kbps
Is calculated, and the time that can be recorded on the 64-Mbyte memory card 8 is calculated to be about 14 minutes.

When the user inputs the value of the item "recording time", the values of the item "screen size", the item "number of frames / second", and the item "image quality" are recalculated. The three items have a priority, and the priority is determined in the order of the item “screen size”, the item “frames / second”, and the item “image quality”. That is, at the time of recalculation, an attempt is made to increase the screen size as much as possible, then to increase the number of frames per second as much as possible, and finally to set the image quality to the fine mode as much as possible.

For example, as shown in FIG. 4, the item "screen size", the item "frames / second", and the item "image quality" are determined. When the recordable time is calculated, it can be recorded in the free space of the memory card. If can be confirmed, CPU1
The value of the item “frames / second” is increased to a recordable value. Here, the item “screen size” and the item “image quality”
Is unchanged because it is already the best.

When the possible recording time is calculated in the state shown in FIG. 4, when it is confirmed that recording is not possible in the free space of the memory card 8, the CPU 1 first changes the image quality from the fine mode to the normal mode, and Is recalculated.
As a result of the recalculation, if recording on the memory card 8 is possible, the recalculation processing is interrupted. As a result of the recalculation, when it is confirmed that the recording cannot be performed in the free space of the memory card 8, the value of the item “number of frames / second” is sequentially reduced, and the recordable time is recalculated.

As a result of the recalculation, if it is found that recording is possible on the memory card 8, the recalculation processing is interrupted. Memory card 8 even if the value of item “Frames / sec” is reduced to 1
If recording is not possible, the screen size is changed to a small screen, and the recordable time is recalculated. As a result of the recalculation, if it is found that recording is possible on the memory card 8, the recalculation processing is interrupted. If still recording is not possible on the memory card 8, a message that "memory is insufficient and recording cannot be performed" is displayed on the display device 2 to indicate that recording is not possible.

When the recalculation process is interrupted and a recordable condition value is found, the values of the items "screen size", "frames / sec" and "image quality" shown in FIG. 4 are updated. Is done. Here, when the "ENTER" key is pressed, the set condition value is written in the memory card 8, and the setting is completed.

When the memory card 8 on which the recording conditions are set is inserted into the digital video recorder, the digital video recorder detects this and reads out the recording conditions stored in the memory card 8 and displays it on the display unit 9. I do. If the recording condition has not been written to the memory card 8, a message that "the recording condition has not been written to this memory card" is displayed on the display unit 9.

When the video digital recorder starts recording,
The microcomputer 18 records the image together with the sound on the memory card 8 while compressing the image with the DSP 16 according to the recording condition while blinking the LED 11.

When the recording is completed, the microcomputer 18
D11 is turned on, and a message "recording end" is displayed on the display unit 9. At the same time, the recording conditions in the memory card are written back to the initial values. That is, screen size =
Large, number of frames / second = 5, image quality = fine mode. When recording is started again in this state, recording is performed with the condition value returned to the initial value.

If the memory card runs out of free space during the recording, the microcomputer 18 suspends the recording, turns on the LED 11, and displays the message "During recording,
Message is displayed, and the process ends. Then, the recording conditions in the memory card 8 are written back to the initial values.

As described above, according to the present embodiment, it is possible to automatically set the optimal recording conditions according to the video resources. Therefore, the capacity of the memory card can be used most efficiently.

Even if the image to be stored is changed, the re-calculation is immediately performed and the recording conditions are reset so that the limited storage medium capacity can be used most effectively. Can be.

The embodiments disclosed this time are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

[0044]

According to the present invention, recording can be performed under optimum conditions.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a hardware configuration of a portable terminal.

FIG. 2 is an external view of a video digital recording device.

FIG. 3 is a block diagram showing a hardware configuration of the digital video recorder.

FIG. 4 is a diagram showing an example of a recording condition setting screen.

FIG. 5 is a diagram showing an example of recording conditions written in a memory card.

FIG. 6 is a diagram illustrating correspondence between video resources and various recording conditions.

[Explanation of symbols]

1 CPU, 2 display device, 3 display driver LS
I, 4 ROM, 5 RAM, 6 keyboard, 7 card controller / slot, 8 memory card, 9
Display, 10 card slot, 11 LED, 12
Antenna, 13 tuner, 14, 15 A / D converter,
16 DSP, 17 RAM, 18 microcomputer, 23
Display LSI.

Claims (6)

[Claims] 1. A parameter setting means for setting a plurality of parameter values related to recording conditions when recording a video, and connected to the parameter setting means for reading and writing the plurality of parameter values. Recording condition setting device, comprising: a parameter recording unit for recording on a removable recording medium, which is capable of recording. 2. A recording time setting means for setting a video recording time, the recording time setting means being connected to the recording time setting means and the parameter setting means, based on the recording time and a recordable capacity of the recording medium. 2. The recording condition setting device according to claim 1, further comprising: first parameter updating means for updating the plurality of parameter values. 3. The recording time setting unit and the parameter setting unit are connected to detect a change in any one of the plurality of parameter values, and record the recording time and the recordable capacity of the recording medium. 3. The recording condition setting apparatus according to claim 2, further comprising a second parameter updating unit for updating other parameter values based on the second parameter. 4. A video resource setting unit for setting a type of a video resource, the video resource setting unit being connected to the video resource setting unit and the parameter setting unit, wherein the plurality of parameter values are set based on the type of the video resource. The recording condition setting device according to claim 2, further comprising: third parameter updating means for updating the recording condition. 5. A recording condition reading means for reading a plurality of parameter values related to a recording condition when recording an image recorded on a recording medium, and said plurality of parameter values being connected to said recording condition reading means. Video recording means for recording a program on the recording medium based on the value. 6. The video recording apparatus according to claim 5, wherein the recording medium is a recording medium in which the plurality of parameter values are written by the recording condition setting apparatus according to claim 1. .