JPS60153674A - Portable television receiver with electronic camera - Google Patents

Abstract

PURPOSE:To perform reception of television broadcasting and photographing of still efficiently by providing a video display signal forming device, image pickup device picture recording/reproducing device, display switching device, etc., and displaying ans switching either television video display signal or picture reproducing signal selectively. CONSTITUTION:A video display signal forming device 20 receives broad-casing radio waves by an antenna 13, and a video display signal is formed by a video signal forming circuit 25 and a video signal processing circuit 30. An image pickup device 40 forms an image pickup signal of a still and the signal from the device 40 is stored and written in a magentic disk by a picture recorder 50. The stored contents of the disk are read out by a picture reproducing signal forming device 62, and a picture reproducing signal is formed. Moreover, a display drive 80 is driven so that a liquid crystal display device 1 will carry out displaying. Here, either television video display signal or picture reproducing signal is selectively supplied to the device 80 by a display switching device 75.

Description

[Detailed Description of the Invention] [Industrial Field of Application] In addition to the functions of receiving television broadcasting and displaying images, the present invention also has functions for capturing and recording still images as easy electronic photography. This article concerns a portable television with an electronic camera equipped with the following functions.

[Technical Background] ゛1 In recent years, the rapid development of electronic technology has promoted the miniaturization of electronic devices, and for example, portable size televisions have come to fruition. □ On the other hand, instead of cameras that use conventional film, CCD (Charge Coupled Dev)
(ice) or C-Moj type □ image 7'74-1, which is taken using a solid-state imaging device, and images are stored in sheet-type storage media such as air disks, optical disks, magneto-optical disks, and non-volatile □ semiconductor memory. A so-called □ electronic camera, which is configured to record on a solid-state storage medium such as a magnetic bubble memory, has also been proposed.

[Object of invention, target]

An object of the present invention is to organically combine the components of the above-mentioned electronic camera and portable television to realize a novel portable electronic device whose usability is dramatically increased.

[Embodiments of the invention]

Figures 1 to 3 show a portable television with an electronic camera according to one embodiment of the present invention, with Figure 1 being a perspective view showing its appearance, and Figure 2 showing its components. FIG.

The portable television of this embodiment has an x-;'y matrix type liquid crystal display device 1 that consumes little power as an electro-optical display device. In addition, for the imaging function of the electronic camera, it has an imaging optical system 2 consisting of a lens, etc., and a solid-state imaging device 3 consisting of a COD or C-MO3 type image sensor, and also records the captured images.・
For the reproduction function, a magnetic disk 4 as a storage medium,
It has a recording head 5, a reproducing head 6, and a motor block 7 for driving the magnetic disk 4, recording head 5, reproducing head 6, and the like. Further, 8 is a power switch, 9 is a display changeover switch, 10 is an image changeover switch, 11 is a shutter switch, 12 is a speaker for audio reproduction, and 13 is an antenna for receiving television broadcast waves.

It should be noted that regarding the aperture adjustment mechanism, finder mechanism, etc. for the functions of electronic cameras, there is no direct relation to the gist of this proposal, and for example, Japanese Patent Application Laid-Open Nos. 58-195369 and 58-215872, etc. The illustration is omitted in FIG. 2 because it is also disclosed in the same publication.

Next, FIG. 3 is a block diagram showing the entire system of the portable television with electronic camera of this example.

A video display signal forming block 2° for receiving TV broadcast radio waves and forming a TV video display signal is composed of an antenna 13, a tuner part 21, a video signal forming circuit 25, and a video signal processing circuit 3o. The tuner part 21 further includes a high frequency amplifier 22, a mixer 23, and a local oscillator 24, and the video signal forming circuit 25 includes an intermediate frequency amplifier 26, a video detector 27, and a video amplifier 28. Furthermore, since each of the above elements is well known,
Explanation regarding its operation etc. will be omitted.

The video signal processing circuit 30 also receives the video signal Va sent from the video signal forming circuit 25 and performs synchronization separation.
Outputs horizontal and vertical synchronization signals. Synchronous separation circuit 31
, a control signal generation circuit 32 for forming each timing control signal Vc for the display drive 4 based on the synchronization signal from the synchronization separation circuit 31; A/D converter 33 for converting into a video display signal Vd consisting of a digital signal
It is composed of

The video signal Va from the video signal forming circuit 25 and the synchronization signal from the synchronization separation circuit 31 of the video signal processing path 30 are used to generate a still image necessary for extracting and recording a desired scene from a television video as a still image. The still image signal forming block 35 is also configured to be input to a still image signal forming block 35 for forming and processing a signal for use.

The still image signal forming block 35 includes the video signal processing circuit 3
a control signal generation circuit 36 that forms a timing control signal necessary for extracting one unit of image signal from the video signal Va based on the synchronization signal from the synchronization separation circuit 31 of No. 0;
It is comprised of a frame extraction circuit 37 which extracts one frame (or one field) worth of signals from the video signal Va as a still-requisition signal Fv in accordance with the timing control signal from the control signal generation circuit 36. There is.

On the other hand, an imaging block 40 provided for taking so-called electrophotography is composed of the above-described imaging optical system 2, solid-state imaging device 3, and imaging signal forming circuit 41. The imaging signal forming circuit 41 includes a synchronizing signal generating circuit 42 that forms a timing control signal necessary for extracting and outputting one frame worth of imaging signal Fp based on the output from the solid-state imaging device 3. , the synchronization signal generation circuit 42
The solid-state imaging device 3 according to the timing control signal from
a driving circuit 3 for scanning and driving the solid-state imaging device 3; and an imaging signal processing circuit 4 for receiving the output from the solid-state imaging device 3 and outputting an imaging signal Fp consisting of signals for one frame.
It is composed of 4.

The recording signal switching circuit 45 is provided as a switching control means for supplying either the still image signal Fv or the imaging signal Fp to the image recording block 50 according to the state of the recording image switching switch 10. be.

The image recording block 50 described above has a low-pass filter (
It is composed of a recording signal processing circuit length 1 consisting of an LPF (hereinafter referred to as LPF) 52 and a frequency modulation circuit 53, an amplifier circuit 54, and a recording head 5, and the image pickup signal Fp or still image inputted via a recording signal switching circuit 45. signal Fv
After the LPF 52 passes components in a band of about 4 MHz or less, for example, the frequency modulation circuit 53 converts the components to 3.5 MHz at one peak level, for example. MIIz, and the other peak level is frequency modulated to take a frequency of about 5.5 MHz, and the frequency-modulated signal is further supplied to the recording head 5 via the amplifier circuit 54. The configuration is such that recording is performed on the magnetic disk 4.

The recording trigger manual switching circuit 46 switches between the still image signal forming block 35 and the imaging block 40 to which the image recording trigger signal from the shank switch 11 is supplied, according to the state of the recording image switching switch IO. This is provided as a control means.

On the other hand, an image reproduction signal forming block 60 that forms an image reproduction signal for reproducing the image recorded on the magnetic recorder 4 includes the reproduction head 6, the amplifier circuit 61, the image reproduction signal formation circuit 62, and the image reproduction signal forming block 60. It is separated from the signal processing circuit 67.

The image reproduction signal forming circuit 62 is composed of a bypass filter (hereinafter referred to as HPF) 63, an amplitude limiting circuit 64, a demodulation circuit 65, and an amplification circuit 66. The signal is
It is input to the HPF 63 via the amplifier circuit 61, and the HPF
63, the components in the band of about 1.5 MHz or more are passed through, and then input to the demodulation circuit 65 via the amplitude limiting circuit 64, and the signal demodulated by the circuit 65 is further demodulated. The signal is supplied as an image signal Pa to an image reproduction signal processing circuit 67 via a circuit 66.

An image signal and signal processing circuit 67 receives the image signal Pa, performs synchronous separation, and outputs the same signal.
8, an A/D conversion circuit 71' for converting the image signal Pa of the above □, which is an analog signal, into a digital signal ratio corresponding to the luminance level, and a digital signal □ from the A/D conversion circuit 71. A memory circuit 72 for storing the address, an address designation circuit 70 for designating the address of the memory circuit 72, and an assistance signal from the seventh stage separation circuit 68 when writing the digital signal to the memory circuit 72. Based on this, the control signal generation circuit 69 which forms the address sidewalk signal to be supplied to the address designation circuit 70 and the memory write control signal W to be supplied to the memory circuit 72, and the memory contents of the memory circuit 72 are read out. The address increment signal supplied to the address designation circuit 70, the readout control signal R1 supplied to the memory circuit 7-2, and each display drive signal Pd are outputted as an image reproduction signal Pd. It is composed of a control signal generation circuit 73 that forms timing No. 4M Pc, etc.
The display switching control circuit 75 includes a display switching switch 9
In state 'c7', either the i signal from the video capture circuit 30 or the (signal from the image reproduction signal processing circuit 67) is selectively applied to the display drive *'y' lock 80, which will be described later. The display switching control circuit 75 is provided as a switching control means for supplying the timing control signal Vc from the control signal generation circuit 32 and the timing control signal from the control signal generation circuit 73. A control signal switching circuit 76 for selectively outputting either one of 4'l"c and a video display signal Vd from the A/D switching circuit 33 and image reproduction from the memory circuit 72. The display signal switching circuit 77 selectively outputs either the □ signal PdO or the ξ deviation signal.
- The display drive block 80 is a direct drive block consisting of a shift register.
A parallel conversion circuit 81, a line memory 82 consisting of a sub-circuit for removing the crystal power from the serial/parallel conversion circuit 81, and a line memory 82 that is driven to the scanning side electrode and signal side electrode of the liquid crystal display device 1, respectively. It is comprised of a scanning side drive circuit 83 and a signal side drive circuit 84 for supplying signals.

The serial/parallel conversion circuit 81 receives a video display signal V that is serially supplied via the display signal switching circuit 77.
d or image reproduction signal Pd into a parallel signal. line memory 82
is configured to latch the contents of the serial/parallel conversion circuit 81 according to the timing control signal Vc or Pc sent via the control signal switching circuit 76, and more specifically, the line memory 82 Inside, a new video display signal V for one scanning lane is generated at each scanning shift timing of the scanning side electrode of the liquid crystal display device 1.
d or the image reproduction signal Pd are sequentially latched.

That is, the scanning side drive circuit 83 receives the number timing control signal Vc supplied via the control signal switching circuit 764'.
or Pc, the signal side drive circuit 84 is configured to sequentially supply scanning drive signals to each scanning side electrode of the liquid crystal display device 1.
According to the signal latched in the □LCD display device 1
It is configured to supply a display signal for display ll1fib to each signal side electrode. □ In Figure 3 above, power supply-related elements and power supply lines are not shown to simplify the drawing □
is omitted.

Each operation of the portable television with electronic camera of this example will be explained below.

First, when the display changeover switch 9 is in the TV mode selection state, the video display signal forming block 20
The timing control signal Vc from the video signal processing circuit 30 of
and the video display signal Vd are supplied to the display switching control circuit 7.
5 is being selectively output.

In this state, the display-motion block 80 receives the timing control signal VC supplied via the control signal switching circuit 76 and the display signal switching circuit 77, respectively.
Since the liquid crystal display device 1 is driven according to the video display signal Vd, the liquid crystal display device 1 displays the video based on the television broadcast received by the video display signal forming block 20. . .

Well, the above droplet display switching 1. When the switch 9 is in the TV mode selection state and the recording image switch 10 is in the TV, static, or normal image recording mode selection state, a desired scene is extracted from the TV image as a still image. It is possible to record the

In this state, the body recording trigger manual switching circuit 46 is in a state of supplying a recording trigger signal generated in response to the operation of the shutter switch 1- to the control signal generation circuit 36 of the still image signal forming block 35. Also, the recording signal switching circuit 45 converts the still image signal Fv from the still image signal forming block 35 into an image! It is in the state of being supplied to the recording block 50.

Therefore, the shutter switch 11 is operated. By receiving the recording trigger signal, the control signal generation circuit 36 outputs a timing control signal for frame extraction in accordance with the synchronization signal from the synchronization separation circuit 31 of the video signal processing circuit 30, and as a result, the frame extraction Circuit 37 extracts one frame (or one field) worth of signals from the video signal Va from the movie image signal forming circuit 25, and
It is output as a still image signal Fv corresponding to a unit still image.

Further, the still image signals F and v described above are input to the uniform recording processor 5o via the recording signal switching circuit 45, and as a result 1. After one extraction, the extracted still images are recorded.
10,000 magnetic days 8 and 4 will be recorded on day 5.

Next, an explanation will be given of the electrophotographic and true photographing operations when the recorded image changeover switch 1o is in the captured image recording mode selection state.

In this state, the recording trigger manual switching circuit, line 46,
The recording trigger signal formed in response to the operation of the shutter switch 11 is supplied to the imaging block 4o, and the recording signal switching circuit 45 is connected to the imaging block 40.
The image recording block 50 is now supplied with an image signal '1tFp from the image recording block 50.

Therefore, when the shutter switch 11 is operated, the synchronizing signal generating circuit 42 of the imaging signal forming circuit 41 receives the recording trigger signal and outputs each timing control signal for extracting frames from the output of the solid-state imaging device 3. As a result, the imaging signal forming circuit 41 outputs an imaging signal Fp corresponding to the image photographed by the imaging optical system 2 and the solid-state imaging device 3.

Further, the above image pickup signal Pp is transmitted to the recording signal switching circuit 45.
is input to the image recording block 50 via
The photographed image is recorded on the magnetic disk 4 by the recording head 5.

Next, the reproduction operation of the above-mentioned still images and photographed images recorded on the magnetic disk 4 will be explained.

When the display changeover switch 9 sets the playback mode selection state, the display changeover control circuit 75 is controlled to supply the image playback signal Pd and timing control signal Pc from the image playback signal formation block 60 to the display drive block 80. .

First, when the recorded content of the magnetic disk 4 is read by the reproducing head 6, the output signal of the reproducing head 6 is transmitted to the amplifier circuit 6.
The image signal Pa that is input to the image reproduction signal forming circuit 62 via the image reproduction signal forming circuit 62 through the image reproduction signal forming circuit 62 is inputted to the image reproduction signal processing circuit 67.

As a result, the synchronization separation circuit 6 of the image reproduction signal processing circuit 67
8 first separates and outputs a start reference signal indicating the beginning of the image signal Pa consisting of a signal of one frame, and thereafter separates and outputs a horizontal synchronizing signal until the image signal Pa of one frame ends to generate a control signal. Supplied to circuit 69. The control signal generation circuit 69 first outputs a reset node signal for resetting the address designation circuit 70 in response to the start reference signal, and thereafter outputs a horizontal synchronization signal until one frame of image signal Pa is completed. The memory write control signal W and address increment signal continue to be output at predetermined timings based on . Note that the memory write control signal W and the address signal have the same period and are out of phase with each other.

As a result, every time the digital signal indicating the brightness level outputted from the A/D conversion circuit 71 (i.e., the memory write control signal W is supplied), the addressing circuit 7.0 of the memory circuit 72 Specified address (hereinafter,
It will be stored and written in the specified address), but
Since the contents of the addressing circuit 70 are also incremented sequentially in accordance with the address signal from the control signal generation circuit 69, the address designation signal from the addressing circuit 70 and the memory write control signal from the control signal generation/writing 69 end up In response to W, brightness level data based on the image signal Pa of the (2) frame is sequentially stored and written into each address of the memory circuit 72.

Here, the contents of the address designating circuit 70 reach the value indicating the final address, and when the writing of the brightness level data based on the image signal Pa of the frame to the memory circuit 72 is completed, the contents of the address designation circuit 70 are reset to the initial state again. At the same time, the control signal generating circuit 73 starts outputting the memory read control signal R and the address signal, and reading out the stored contents from the memory circuit 72 starts. Note that the above-mentioned memory read control signal R and address signal have the same period and are signals that are out of phase with each other, but both of them are similar to the display drive signal output from the control signal generation circuit 73. Necessary synchronization is achieved with each timing control signal Pc.

As a result, the internal memory within the designated address of the memory circuit 72 is read out every time the memory read control signal R from the control signal generation circuit 73 is supplied. Since the content is also incremented sequentially according to the address increment signal from the control signal generation circuit 73, the brightness level data corresponding to one frame of reproduced image stored in the memory circuit 72 is eventually stored in the memory circuit. 72 addresses are sequentially read out as image reproduction signals Pd, resulting in (1), , and so on. .

In addition, in the case of this reading, the addressing circuit 70
When the contents of the address designation circuit 70 reach the value indicating the final address, the contents of the address designation circuit 70 return to the initial value again in response to the next address increment signal from the control signal generation circuit 73, and the contents of the address designation circuit 70 return to the initial value again. Since the image reproduction signal Pd is configured to be repeatedly read from the memory circuit 72, the image reproduction signal Pd continues to be repeatedly and cyclically outputted from the memory circuit 72 while the reproduction mode selection state is maintained.

Therefore, in this state, the display drive program 80 receives the timing control signal P supplied via the control signal switching circuit 76 and the display signal switching circuit 77, respectively.
Since the liquid crystal display device 1 is driven according to the image reproduction signal Pd and the image reproduction signal Pd, the liquid crystal display device 1 reproduces and displays the above-mentioned photographed image or still image recorded on the magnetic disk 4. Become.

〔Effect of the invention〕

As mentioned above, according to He, by organically combining the components of an electronic camera and a mobile TV, the original electronic photo shooting function and TV broadcast reception and video display function can be realized separately. In addition to this, by using some of the components of the video display function, such as the display device and display drive means of the television, it is possible to display images taken as electrophotographs and recorded on a specified storage medium. A new portable electronic device that can immediately reproduce and display on the display unit is realized.

Note: In the above-mentioned embodiment, the liquid crystal display device 1 is configured as a so-called black display device to simplify the explanation, but the present invention uses display means for color display. It is clear that this can also be applied to any case.

In addition, the system may be configured such that at least some of the components of the electronic camera can be attached to and removed from the TV main body, or they may be provided separately from the beginning, and the two may be electrically connected using a predetermined connector wire when playing back and displaying recorded images. It is also possible to configure the system as follows.

[Brief explanation of drawings]

Figures 1 to 3 show a portable television with an electronic camera according to an embodiment of the present invention, with Figure 1 being a perspective view showing its appearance, and Figure 2 schematically showing some of its components. FIG. FIG. 3 is a block diagram showing the entire system. 1---Liquid crystal display device, 2--11 imaging optical system, 3--1--solid-state imaging device, 4--
-----1 magnetic disk, 5...-recording head, 6-
-----------Playback head, ? -----------Motor block, 9---------1 display changeover switch, 1
0...-Recorded image changeover switch, 1t--Shutter switch, 20-----1 video display signal formation block, 21--2 part of tuji, 25-----
-1 video signal formation circuit, 30--1 video signal processing circuit, 35--Still image signal formation block, 4
0-----1 imaging block, 10--1 imaging signal forming circuit, 45-----1 recording signal switching circuit,
46---Recording trigger manual switching circuit, 50-
...-Image recording block, 51--Recording signal processing circuit, 60--Image reproduction signal formation block, 62--Image reproduction signal formation circuit, 6- ---
--- Image reproduction signal processing circuit, 75 --- Display switching control circuit, 80 --- Display drive block,

Claims (2)

[Claims] (1) a video display signal forming means for receiving television broadcast radio waves and forming a signal for displaying a television image; and a freezing means for capturing a still image and forming an image signal;
an image recording means for predetermining and memorizing and writing a destroyed imaging bond from the imaging means into a storage medium; and image reproduction for forming a signal for reproduction by extracting the stored contents of the storage medium. a signal forming means, a display driving means for driving a display device, and a signal of either one of the TV video front thread fi number and the image reproduction signal being supplied to the display driving means; □ A portable television with an electronic camera, characterized in that it is equipped with □ display switching means for displaying video data. (2) A portable television with an electronic camera according to claim 1, wherein the storage medium is a one-shot disk.