EP0410489A2
Expired / Lapsed
EP
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Multi-mode video signal playback and display device
Assignee: Hitachi Ltd
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Filing: 1990-07-27
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Granted: —
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Expires: 2010-07-27
Abstract
Abstract A multi-mode display device is made integral with a multi-mode video signal recording and play-back device to enable a control circuit (3) and a control signal to be made common to each other. With this arrangement the circuit size can be reduced and at the same time the circuit configuration can be simplified. In addition, the operation of a circuit not related with the play-back signal is controlled or stopped by using a common control circuit (3) and then the power consumption can be reduced.
Inventors
- 👤 Satoru Hitachi-Keimei-Ryo No. 249 Takashimizu
- 👤 Fumio Inoue
- 👤 Hiroyuki Torii
- 👤 Jun Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 00:16
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/79; H04N9/7921; H04N9/7925
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
197 words
A multi-mode video signal play-back and display device, characterized by a signal recording and playing-back means composed of a first and a second video signal circuit (10, 11, 12) for playing-back signals recorded on a recording medium (100) and selecting several types of television mode signals played-back from the recording medium (100); a signal playing-back means composed of a third and a fourth video signal circuit (50, 51, 52) for selecting several types of television mode signals supplied from said signal recording and playing-back means; and a displaying device (7) for displaying an output signal of said signal playing-back means, said multi-mode video signal playing-back and displaying device comprising a detection distinction means (2) for detecting a difference in frequencies of synchronous signals contained in the video signal, detecting the television signals having different field frequencies to each other and discriminating them, and a changing-over control circuit (3) for selecting the first and second video signal circuits (10, 11, 12) of said signal recording and playing-back means by the output signal (2a) of said sensing and distinction means (2) and for selecting the third and fourth video signal circuits (50, 51, 52) of said signal playing-back means.
Claim 2
Dependent Claim
197 words
A multi-mode video signal play-back and display device, characterized by a signal recording and playing-back means composed of a first and a second video signal circuit (10, 11, 12) for playing-back signals recorded on a recording medium (100) and selecting several types of television mode signals played-back from the recording medium (100); a signal playing-back means composed of a third and a fourth video signal circuit (50, 51, 52) for selecting several types of television mode signals supplied from said signal recording and playing-back means; and a displaying device (7) for displaying an output signal of said signal playing-back means, said multi-mode video signal playing-back and displaying device comprising a detection distinction means (2) for detecting a difference in frequencies of synchronous signals contained in the video signal, detecting the television signals having different field frequencies to each other and discriminating them, and a changing-over control circuit (3) for selecting the first and second video signal circuits (10, 11, 12) of said signal recording and playing-back means by the output signal (2a) of said sensing and distinction means (2) and for selecting the third and fourth video signal circuits (50, 51, 52) of said signal playing-back means.
Claim 3
Dependent Claim
160 words
A multi-mode display device integral with a video signal play-back device having a portion comprised of a video signal circuit (10, 11, 12) corresponding to several types of signal modes for playing-back a signal recorded in a recording medium (100) integral with a portion including a croma video signal circuit (50, 51, 52) corresponding to several types of signal modes and a display device (7) for displaying in common said several types of signals, characterized in that said multi-mode displaying device integral with a video signal playing-back device comprising a control circuit (3) having a function for discriminating a PAL mode video signal and a SECAM mode video signal in response to a difference of the standard of the color signal and performing a selection of several video signal outputs and several croma-video signals in common with said video signal circuit (10, 11, 12) and said croma-video signal circuit (50, 51, 52) in response to the result of said distinction.
Claim 4
Dependent Claim
160 words
A multi-mode display device integral with a video signal play-back device having a portion comprised of a video signal circuit (10, 11, 12) corresponding to several types of signal modes for playing-back a signal recorded in a recording medium (100) integral with a portion including a croma video signal circuit (50, 51, 52) corresponding to several types of signal modes and a display device (7) for displaying in common said several types of signals, characterized in that said multi-mode displaying device integral with a video signal playing-back device comprising a control circuit (3) having a function for discriminating a PAL mode video signal and a SECAM mode video signal in response to a difference of the standard of the color signal and performing a selection of several video signal outputs and several croma-video signals in common with said video signal circuit (10, 11, 12) and said croma-video signal circuit (50, 51, 52) in response to the result of said distinction.
Claim 5
Dependent Claim
152 words
A multi-mode display device integral with a video signal play-back device having a portion composed of a video signal circuit (10, 11, 12) corresponding to several types of signal modes for playing-back a signal recorded on a recording medium (100) integral with a portion composed of a croma-video signal circuit (50, 51, 52) corresponding to several types of signal modes and a displaying device (7) for commonly displaying signals of said several types of modes, characterized in that said multi-mode displaying device intergral with the video signal playing-back device comprising a control circuit (3) having a function for terminating an operation of a color signal processing part of said PAL mode or SECAM mode video signal circuit or said croma-video when the signal recorded in an LP mode of the PAL mode in the VHS standard or the SECAM mode, or shielding the output signal and displaying mono-color on the displaying device.
Claim 6
Dependent Claim
152 words
A multi-mode display device integral with a video signal play-back device having a portion composed of a video signal circuit (10, 11, 12) corresponding to several types of signal modes for playing-back a signal recorded on a recording medium (100) integral with a portion composed of a croma-video signal circuit (50, 51, 52) corresponding to several types of signal modes and a displaying device (7) for commonly displaying signals of said several types of modes, characterized in that said multi-mode displaying device intergral with the video signal playing-back device comprising a control circuit (3) having a function for terminating an operation of a color signal processing part of said PAL mode or SECAM mode video signal circuit or said croma-video when the signal recorded in an LP mode of the PAL mode in the VHS standard or the SECAM mode, or shielding the output signal and displaying mono-color on the displaying device.
Claim 7
Dependent Claim
64 words
A multi-mode display device integral with a video signal play-back device according to any one of claims 1 to 3, wherein said control circuit (3) has a function for operating only the circuit of a mode corresponding to the result of the distinction of said control circuit (3) of several video signal circuits (10, 11, 12) and/or several croma-video signal circuits (50, 51, 52).
Claim 8
Dependent Claim
46 words
A multi-mode display device intergral with a video signal play-back device according to any one of claims 1 to 4, wherein said control circuit (3) mechanically selects and specifies a distinction of several types of signal modes with a button switch (4, 6) of the like.
Claim 9
Dependent Claim
110 words
A multi-mode display device integral with a video signal play-back device having a portion composed of a video signal circuit (10, 11, 12) corresponding to several types of signal modes for playing-back a signal recorded on a recording medium (100) integral with a portion composed of a croma-video signal circuit (50, 51, 52) corresponding to several types of signal modes and a displaying device (7) for displaying commonly said several types of signal modes characterized in that a signal output synchronously separated and detected or synchronously formed is commonly connected with said video signal circuit (10, 11, 12), said croma-video signal circuit (50, 51, 52) and said displaying device (7).
Claim 10
Dependent Claim
110 words
A multi-mode display device integral with a video signal play-back device having a portion composed of a video signal circuit (10, 11, 12) corresponding to several types of signal modes for playing-back a signal recorded on a recording medium (100) integral with a portion composed of a croma-video signal circuit (50, 51, 52) corresponding to several types of signal modes and a displaying device (7) for displaying commonly said several types of signal modes characterized in that a signal output synchronously separated and detected or synchronously formed is commonly connected with said video signal circuit (10, 11, 12), said croma-video signal circuit (50, 51, 52) and said displaying device (7).
Claim 11
Dependent Claim
118 words
A multi-mode display device intergral with a video signal play-back device having a portion composed of a video signal circuit (10, 11, 12) corresponding to several types of signal modes for playing-back a signal recorded on a recording medium (100) integral with a portion composed of croma-video signal circuits (50, 51, 52) corresponding to several types of signal modes and a displaying device (7) for commonly displaying said several types of modes of signals characterized in that each of the outputs corresponding to each of the signal modes of said several types of video signal circuits (10, 11, 12) is directly connected to several types of croma-video signal circuits (50, 51, 52) having the same signal modes, respectively.
Claim 12
Dependent Claim
118 words
A multi-mode display device intergral with a video signal play-back device having a portion composed of a video signal circuit (10, 11, 12) corresponding to several types of signal modes for playing-back a signal recorded on a recording medium (100) integral with a portion composed of croma-video signal circuits (50, 51, 52) corresponding to several types of signal modes and a displaying device (7) for commonly displaying said several types of modes of signals characterized in that each of the outputs corresponding to each of the signal modes of said several types of video signal circuits (10, 11, 12) is directly connected to several types of croma-video signal circuits (50, 51, 52) having the same signal modes, respectively.
Claim 13
Dependent Claim
100 words
A multi-mode displaying device integral with a video signal play-back device according to claim 1 using a matrix mode displaying device (7) as a displaying device characterized in that said control circuit (3) has a function to control a scanning state of said matrix mode displaying device (7) in response to a result of a distinction of the NTSC mode, PAL mode or SECAM mode, subtracting a video information for every predetermined scanning line and displaying it when a PAL mode or a SECAM mode signal having more scanning lines than that of the NTSC mode is to be displayed.
Claim 14
Dependent Claim
129 words
A multi-mode display device integral with a video signal play-back device having a portion composed of a video signal circuit (10, 11, 12) corresponding to several signal modes for playing-back a signal recorded on a recording medium (100) integral with a portion composed of an on-screen displaying circuit (500, 33) including a character and a figure information generating circuit (33) and a displaying circuit, a croma-video signal circuit (50, 51, 52) corresponding to several types of signal modes and a displaying device (7) for commonly displaying said several types of signals, said multi-mode displaying device integral with a video signal playing-back device comprising a control circuit (3) for commonly controlling the character and figure information generating circuit (33) constituting said on-screen displaying circuit (500, 33) and the displaying circuit.
Claim 15
Dependent Claim
129 words
A multi-mode display device integral with a video signal play-back device having a portion composed of a video signal circuit (10, 11, 12) corresponding to several signal modes for playing-back a signal recorded on a recording medium (100) integral with a portion composed of an on-screen displaying circuit (500, 33) including a character and a figure information generating circuit (33) and a displaying circuit, a croma-video signal circuit (50, 51, 52) corresponding to several types of signal modes and a displaying device (7) for commonly displaying said several types of signals, said multi-mode displaying device integral with a video signal playing-back device comprising a control circuit (3) for commonly controlling the character and figure information generating circuit (33) constituting said on-screen displaying circuit (500, 33) and the displaying circuit.
Claim 16
Dependent Claim
184 words
A multi-mode display device integral with a video signal play-back device having a portion composed of a video signal circuit (10, 11, 12) corresponding to several types of signal modes for playing-back a signal recorded on a recording medium (100) integral with a portion composed of an on-screen displaying circuit (500, 33) including a character and figure information generating circuit (33) and a displaying circuit, croma-video signal circuits (50, 51, 52) corresponding to several types of signal modes and a matrix mode displaying device (7) for displaying commonly said several types of mode signals, characterized in that said multi-mode displaying device integral with a video signal playing-back device comprising a scanning control circuit (3, 71) having a function for forming a scanning timing signal (71a, 71b) of said matrix mode displaying device (7) in response to horizontal and vertical synchronous signals (3d, 3CH) and a function for forming a displaying timing signal (71c) of said on-screen displaying circuit (500, 33), wherein said scanning control circuit (3, 71) being commonly connected to said matrix mode displaying device (7) and said on-screen displaying circuit (500, 33).
Claim 17
Dependent Claim
184 words
A multi-mode display device integral with a video signal play-back device having a portion composed of a video signal circuit (10, 11, 12) corresponding to several types of signal modes for playing-back a signal recorded on a recording medium (100) integral with a portion composed of an on-screen displaying circuit (500, 33) including a character and figure information generating circuit (33) and a displaying circuit, croma-video signal circuits (50, 51, 52) corresponding to several types of signal modes and a matrix mode displaying device (7) for displaying commonly said several types of mode signals, characterized in that said multi-mode displaying device integral with a video signal playing-back device comprising a scanning control circuit (3, 71) having a function for forming a scanning timing signal (71a, 71b) of said matrix mode displaying device (7) in response to horizontal and vertical synchronous signals (3d, 3CH) and a function for forming a displaying timing signal (71c) of said on-screen displaying circuit (500, 33), wherein said scanning control circuit (3, 71) being commonly connected to said matrix mode displaying device (7) and said on-screen displaying circuit (500, 33).
Claim 18
Dependent Claim
65 words
A multi-mode display device integral with a video signal play-back device according to claim 10, characterized in that said croma-video signal circuit (50, 51, 52) has a clamp cir cuit or a burst gate circuit, an output (3d) of said scanning control circuit (3, 71) is connected to said on-screen displaying circuit (500) and also connected to said clamp circuit or the burst gate circuit.
Claim 19
Dependent Claim
191 words
A multi-mode display device integral with a video signal play-back device having a portion composed of a tuner circuit and a video signal circuit (10, 11, 12) corresponding to several types of signal modes for playing-back a signal of said tuner circuit or a signal recorded on a recording medium (100) integral with a portion composed of a croma-video signal circuit (50, 51, 52) corresponding to several types of signal modes and a matrix mode displaying device (7) for commonly displaying said several types of modes of signals, characterized in that an on-screen displaying circuit (33, 500) composed of a character and figure information generating circuit (33) and a displaying circuit, and a control circuit (3) having a function for distinguishing an output state of a weak electric field state of said tuner circuit or non-signal state and a function for stopping operations of said video signal circuit (10, 11, 12) and said croma-video signal circuit (50, 51 ,52) are provided, and wherein said matrix displaying device (7) has a scanning timing signal output and said scanning timing signal (71a to 71c) output is connected to said on-screen displaying circuit (500).
Claim 20
Dependent Claim
191 words
A multi-mode display device integral with a video signal play-back device having a portion composed of a tuner circuit and a video signal circuit (10, 11, 12) corresponding to several types of signal modes for playing-back a signal of said tuner circuit or a signal recorded on a recording medium (100) integral with a portion composed of a croma-video signal circuit (50, 51, 52) corresponding to several types of signal modes and a matrix mode displaying device (7) for commonly displaying said several types of modes of signals, characterized in that an on-screen displaying circuit (33, 500) composed of a character and figure information generating circuit (33) and a displaying circuit, and a control circuit (3) having a function for distinguishing an output state of a weak electric field state of said tuner circuit or non-signal state and a function for stopping operations of said video signal circuit (10, 11, 12) and said croma-video signal circuit (50, 51 ,52) are provided, and wherein said matrix displaying device (7) has a scanning timing signal output and said scanning timing signal (71a to 71c) output is connected to said on-screen displaying circuit (500).
References Cited (Backward Citations)
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