JPH02121571A - Remote controller - Google Patents

Abstract

PURPOSE:To improve the operability of a remote controller by preparing a liquid crystal display part on a surface where keys are arrayed and showing a part of a display screen of a TV receiver with a solid line, a dotted line, etc., or with the change of the luminance, the contrast, etc. CONSTITUTION:At a liquid crystal driving part, the data showing the position of the original point coordinates Q0(x, y) of A is read out of a memory 12 against the coordinate point P0(0, 0) of a display part B for the entire liquid crystal and then the position of A is moved based on the Q0. In this case, A has a constant size. Furthermore A can be easily magnified or reduced with addition of a key to a remote controller 3. When the controller 3 is set into a receiver 1, the signal of an NTSC system is outputted as the output of the receiver 1. In case the controller 3 is set into a receiver 2, the signal of an HDTV (high vision) system is down-converted into the NTSC system within the receiver 2. Then the screen of HDTV is partly projected on the CRT of the receiver 2. If B of the receiver 1 shows a full screen of the HDTV, A of the receiver 1 is coincident with A of the receiver 2.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a remote control device used for converting high-definition signals and the like.

Conventional technology Enlarging a part of the screen displayed on the display of a television receiver, or enlarging a so-called HDTV (high definition) screen
When converting to an SC system screen, the area to be enlarged or the area to be converted to the system is displayed on the larger screen as shown in FIG.

Problem to be Solved by the Invention However, if there is an HDTV display unit as shown in FIG.
When the display section 2 has only a size corresponding to area A, there is a problem in that it is not possible to tell which part of area A is in area B using only the display section 2.

Means to Solve the Problems In the present invention, a display section showing all areas is provided on the remote control section, and even if the display section only corresponds to the converted area,
It is configured so that you can see which part of the whole area that area is.

Function: With this configuration, the area can be displayed on the liquid crystal display on the remote control device, and the position of the area can be moved in response to key operations, thereby improving operability.

Embodiment An outline of the operation of the embodiment will be described with reference to FIG. In the figure, numeral 1 is a so-called HDTV receiver (display), and numeral 2 is an NTSC television receiver. Table 1 shows some of the standards for signals handled by receiver 1 and signals handled by receiver 2.

3 is a remote control device of the embodiment. Reference numeral 4 denotes the liquid crystal display section, and the overall aspect ratio is 9:16 according to the high-definition standard, which is the same as the aspect ratio of the display section B of the receiver 1.

Keys 5.6 and 7.8 move area A on the liquid crystal in the direction of the arrow in the figure, and the arrows on the keys and Qo move in the same direction. 9 is a light emitting diode, 10 is a key for turning on/off the power of the receivers 1 and 2, and 11 is a so-called 10 key.

If you press keys 5 to 8, the area will move on display B of receiver 1 in the same way as A moves on LCD 4, and the image of area will be displayed on receiver 2's display. be done. 21.31
is the power switch of receivers 1 and 2, 22.32 is the receiver 1
, 2 receives the infrared light emitted from 9. 23.33 is up/up of 1 and 2 receiving channels
This is a down control key.

Next, the operation of the remote control section will be described with reference to FIG.

In Fig. 2, 11 is a so-called key matrix, 12 is a memory for the address of the starting point (Qo) of the area, and 13 is a microgrocer, which controls the memory 12 and determines which key in the key matrix 11 is pressed. is determined, and the output corresponding to that key is transmitted to 14. However, when keys 6 to 8 are pressed, Q in the starting point address memory is pressed. By changing the value of Qo.

Output the value and send it to 14. Reference numeral 15 indicates a light emitting diode element in the light emitting diode, and reference numeral 9 may include a plurality of 16. A battery 16 not only lights up the diode 15 but also supplies power to drive the elements 12 to 15 and 17.

Reference numeral 17 denotes a liquid crystal driving section which also has the function of reading the contents of the memory 12 (the address of Qo), determining the position of Qo on the liquid crystal display section, and displaying the position. In the liquid crystal driving section, the coordinate origin P of the display section B of the entire liquid crystal. Data indicating where the origin coordinates Qo (x, y) of A are with respect to (0, 0) is read from the memory 12, and the position of A is moved according to Qo. The size of A is assumed to be constant. Of course, A can be easily enlarged or reduced by adding a key to the remote control device 3.

Next, the operation on the receiver side will be described. receiver 1 or 2
A down converter (which converts HDTV signals to NTSC signals) that includes memory for one to two frames is incorporated inside. When incorporated into the receiver 1, an NTSC signal is output as the output of the receiver 1. When installed in receiver 2, the HDTV system signal is down-converted to NTSC system in receiver 2, and receiver 2
Part of the HDTV screen is displayed on the CRT.

If B of receiver 1 is the full screen of HDTV, then receiver 10
A matches A of receiver 2. 21.31 is the power switch, 22.32 is the remote control light receiving section, 23
．． 33 is an up/down switch circuit for channel switching. When you press keys 6-8 on the remote control transmitter, Qo (x.

y) address, X and y change. Receiver 1 in Figure 1
P of , Po of 4, Qo and 00 correspond.

The change value output from the remote control transmitter is detected by the light receiving section 32, decoded by the switch circuit 33, and x
, y are transmitted to the W/R control circuit 34. The circuit 34 can be easily constructed using a microcomputer. x,
According to the change in y, the star of the read address in the frame memory 36 is changed, and a signal corresponding to the change in Qo (Qo) is read out from the memory 35. Memory 36 is HD
It may be configured with two sides of the TV frame memory, and reading and writing may be done separately, or it may be read, modified, and written to make up one frame, or it may be made up of one field. . In any case, when writing, use the HDTV
Write all the signals of the method.

HDTV system (7) Signal format idR, G, BTMOY, PB.

There is no problem with PR.

When reading, data is read in accordance with NTSC synchronization.

39 is a synchronization separation circuit for HDTV system, 4o is NTS
This is a synchronization generation circuit for the C method. 36 is an address generation unit in one direction (horizontal direction), 37 is an address generation unit in the y direction (vertical direction), and 38 is an input/output buffer, which includes a latch memory, a sampling circuit, an #A/D circuit if necessary, and a D/D circuit.
A. Contains a circuit.

34 to 4Q are general configuration examples of down converters.

38 NTSC video is displayed as A on the display section of the receiver 2. The deflection system of the CRT of the receiver 2 is a synchronization generation circuit 40.
synchronize to the output of

Table 1 shows some of the standards for the NTSC system and HDTV system. There are various methods for down-converting HDTV signals to NTSC signals, but they are not the subject of the present invention and will therefore be omitted.

Table 1 Effects of the Invention As described above, if the remote control device of the present invention is used, even if only a current television receiver is used, which part of the entire screen B of the HDTV system will be displayed as A on the screen. Conveniently, the current status is displayed on the LCD of the remote control transmitter. To reduce the power consumption of a remote control transmitter, just attach a switch, and when not in use, back up only the remote control with batteries and turn off the LCD display.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing a remote control device in one embodiment of the present invention, FIG. 2 is a block diagram of the remote control device in the same embodiment, and FIG. 3 is a part of a receiver used in the same embodiment. It is a block diagram. 1... High-definition display, 2...NTS
C Current television receiver, 3...Remote control device, 4.
...Liquid crystal display section. Name of agent: Patent attorney Shigetaka Awano and 1 other person 2nd
figure//

Claims (4)

[Claims] (1) A remote control device that controls the operation of a television receiver, which is equipped with a liquid crystal display on the surface where the keys are arranged, and a part of the display screen of the television receiver is marked with solid lines, dotted lines, etc. Alternatively, a remote control device characterized in that the display is indicated by a change in brightness or contrast. (2) The remote control device according to claim 1, wherein an area for converting into a signal format other than the video signal format displayed on the display section of the television receiver is displayed on the liquid crystal display section. (3) The remote control device according to claim 1 or 2, further comprising a liquid crystal display section having an aspect ratio corresponding to that of a television receiver. (4) The remote control device according to claim 1 or 2, wherein the liquid crystal display section is provided with a line, a dotted line, or a portion whose brightness or contrast changes to indicate the display section of the television receiver.