DE2312739B2 - Electronic clock - Google Patents

Description

ÄSei ^ switch mr the ^ g

, ■ u St Accident at a suitable location on the watch case Invention relates to an electronic «J ^ ™ ^^

Clock with a digital display for displaying sew e ^ block diagram of an execution hours and minutes and electronic counters \\ f _ni t of _the invention, which is a 60-step counter

for counting the hours and minutes, as well as "5 ™ ⁿ f ^f ° ™ ^de '* ™ _INET over count at each eineinem date counter and a display switch to nai, uc _Impulss i _g nal is driven, the for selectively displaying the current date on the zelneη 1 ^^^^ Senefator 19 so produced who-display unit. 7 ™: _ß a pulse occurs every second. With the DT-OS 22 21 681 an electronic den, * ™haben ₂₀ ^J _{generated a} carry signal according to clock was proposed, the electronic counter for 3 <> ua ^ _{Tkuhe or} after every minute. A counting of hours, minutes, days, months and ^ f "^ go. Step counter 21 is shown by the years. The output signals of these electronic ^" ^ alen of the counter 20 are controlled and a niche counter is on display switches - ^ f '^ sknal given according to its counter reading indicating units which, depending on the actuation of the XKufr ^ jND elements 24a, 246, 24c ... and display switches, display seconds, hours 35 ah, cue uo ₂ 5 &, 25c ... ER to a decoder and minutes or by months and days ^ ZZ * _who the 'a driver circuit 18 is possible. This known electronic clock require ~ Lf ^ L, _Mness joiiai the decoder is driven to changed to display both the seconds, the hours from Ausganjsi ^ ai α ^ _jg ^ and minutes as well as the days and months of JE ^^ "^ SSdS display 13 to cause a considerable number of switching operations on the occasional date, as well as a wall ⁸ of switches and logic switching elements, ... ^ J ^ f ^ wdls 60 ^ ahlsteps, which can be switched to one of the desired displays as required Transfer sigja gM ^ew £ _{b will} be able to make his .. In the idle state the electrical ^^ ή ^^ ΆΖ ^^ ά ^ ά of his respective clock is preferably at all side. FS. ^ J ^ SlS ^ decoder 26 there there is no display in order to protect the power sources of the electric 45 »«. ^ SS? ^ '? «Sd ^ om output signal of the niche clock one actuates the individual e ^ _n ^ ^^ ^^ odmMgg ads associated display switch ^ \ ^ J ^ f ^e _m übertragssie. Numbers from ^being - · · ru ι i, er, ι f Qr-hritt 7 counters 23 are sent to a binary counter

as this is felt to be sufficient for the user of a conventional wristband to the entrance of a watch. 55 ben, ^z ^ ^sl f "fk% P ^'e ™ ° £ ^J E ^ ά bt e

In an electronic watch of the type mentioned, turns an U ^ - ⁰ ^^^^ ',, ³ Jj _& " ₃₁ ^g f' s7nd this problem is solved in that only the display inputs of this V ^^ Äffi, ³ J« ' n ^ mx unity for the minutes mix the outputs of the with a ^Α ^^ ^Β ^ ² ο ^ ₃ £? ₂ SnIn counter * for the minutes and those of the current date-% *; ££ »^ * ^

^ 7ern? Uin: i _e £ onic clock is only a ™

only display switch required, which with its output signals the

Press the minutes display which is continuously on 25 «, 2sft, 25c ..

****** J ^w ** ™ "~ O - E? T—

this simple switchover between the outputs

een the minute counter and the outputs of the data display with the help of the

15 for the

Minutes on the 60-step counter 21, the AND gates 24 a, 24 b, TAc ..., the OR gates 25 a, 2Sb, ISc ..., the decoder 22 and the driver circuit 18 made while the Hour display with hooves of the display unit 14 for the hours is made by the 12-step counter 23, which is controlled by the carry signals of the 60-step counter 21, and via the decoder 26 and the driver circuit 27.

If a date is to be displayed, the switch 32 for the date display is actuated so that the first inputs of the AND gates 24a, 24b, 24c ... are blocked due to the absence of an output signal from the inverter 32, which emit input signals for the minute display so that the minutes display is prevented. At the same time, the output signal of the switch 32 and the output signal of the 3! -Step counter 30 for the date display to open the AND gates 31a, 316, 31c and to activate the decoder 22 via the OR gates 25a, 25t, 25c .. . used. The output signal of the decoder 22 controls the driver circuit 13 in order to display the date on the display unit 15 for the minutes.

Although in the embodiment shown, the AND gates 24a, 24b, 24c ... and the OR gates 25a, 256, 25c. .. between the 60-step counter 21 for the minute display and the decoder

ίο 22 are switched, you can also switch between the 12-step counter 23 for the hour display and the decoder 26 are switched, in this case the date is displayed on the display unit 14 for the hours by actuating the switch 32 will. If the date is to be displayed, a with the OR elements 29 connected advance switch 34 pressed to the counter reading of the 31-step counter independently from the output signal of the binary counter 28 to

ao count.

1 sheet of drawings

Claims (1)

the electronic clock is very easy to train both in terms of mechanics Claim: SSr ^ SSdrt, however, that is still sufficient '! -Ken Aweigea of each day display, electronic watch with a digital display? "* 5 * ™ Τ", "j he _d minute as this ζ. B. also for the display of hours and minutes and electronic 5 aer. ^ö ™ " ^u ^ _{er day and date} display provided tronic counters for counting hours and« Jhdwn, mu ^^^ _{der FalJ} ^ Minutes as well as a date counter and ^me J? F ^ _dung is explained in more detail with the aid of a display switch for the optional display "" HaraesteUten exemplary embodiment. the date of the day on the display unit, which shows ^ - ^ in characterized in that only the anio in the euu ^ ^ Aozage, _{the invention display unit} (15) for the minutes between the ^ f " _1e toonic clock and outputs of the counter for the minutes (21) and maue ^ _{eie * block circuit of} one embodiment of the current date counter (30) switchable. * Ar invention. is. ^5Ρ τΪρΓ _β 1 isV schematically a new electronic ¹⁵ years you may have an 11 watch case on one